| Message ID | ZYAimyPYhxVA9wKg@li-008a6a4c-3549-11b2-a85c-c5cc2836eea2.ibm.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | selftests/livepatch fails on s390 | expand |
On 12/18/23 05:44, Alexander Gordeev wrote: > Hi all, > > The livepatch selftest somehow fails in -next on s390 due to what > appears to me as 'comm' usage issue. E.g the removal of timestamp- > less line "with link type OSD_10GIG." in the below output forces > 'comm' to produce the correct result in check_result() function of > tools/testing/selftests/livepatch/functions.sh script: > > [ 11.229256] qeth 0.0.bd02: qdio: OSA on SC 2624 using AI:1 QEBSM:0 PRI:1 TDD:1 SIGA: W > [ 11.250189] systemd-journald[943]: Successfully sent stream file descriptor to service manager. > [ 11.258763] qeth 0.0.bd00: Device is a OSD Express card (level: 0165) > with link type OSD_10GIG. > [ 11.259261] qeth 0.0.bd00: The device represents a Bridge Capable Port > [ 11.262376] qeth 0.0.bd00: MAC address b2:96:9c:49:aa:e9 successfully registered > [ 11.269654] qeth 0.0.bd00: MAC address 06:c6:b5:7d:ee:63 successfully registered > > By contrast, using the 'diff' instead works as a charm. But it was > removed with commit 2f3f651f3756 ("selftests/livepatch: Use "comm" > instead of "diff" for dmesg"). > > I am attaching the contents of "$expect" and "$result" script > variables and the output of 'dmesg' before and after test run > dmesg-saved.txt and dmesg.txt. > > Another 'dmesg' output dmesg-saved1.txt and dmesg1.txt also > shows the same problem, which seems like something to do with > sorting. > > The minimal reproducer attached is dmesg-saved1-rep.txt and > dmesg1-rep.txt, that could be described as: > > --- dmesg-saved1-rep.txt 2023-12-17 21:08:14.171014218 +0100 > +++ dmesg1-rep.txt 2023-12-17 21:06:52.221014218 +0100 > @@ -1,3 +1,3 @@ > -[ 98.820331] livepatch: 'test_klp_state2': starting patching transition > [ 100.031067] livepatch: 'test_klp_state2': completing patching transition > [ 284.224335] livepatch: kernel.ftrace_enabled = 1 > +[ 284.232921] ===== TEST: basic shadow variable API ===== > > The culprit is the extra space in [ 98.820331] timestamp, that from > the script point of view produces the output with two extra lines: > > [ 100.031067] livepatch: 'test_klp_state2': completing patching transition > [ 284.224335] livepatch: kernel.ftrace_enabled = 1 > [ 284.232921] ===== TEST: basic shadow variable API ===== > > If the line with [ 98.820331] timestamp removed or changed to e.g > [ 100.031066] (aka 1 us less), then the result output is as expected: > > [ 284.232921] ===== TEST: basic shadow variable API ===== > > Thanks! Hi Alexander, You're right about the timestamp formatting. I can repro with a a slight variant on your example: Assume a pre-test dmesg log has three msgs (including one with timestamp of fewer digits): $ head /tmp/{A,B} ==> /tmp/A <== [ 1] message one [10] message two [11] message three during the rest, the first message rolls off the buffer post-test and a new fourth message is added: ==> /tmp/B <== [10] message two [11] message three [12] message four The test's comm invocation should be only printing "lines unique to FILE2", ie, the latest fourth message, but... $ comm --nocheck-order -13 /tmp/A /tmp/B [10] message two [11] message three [12] message four If we pre-trim the timestamps, the output is what we expect: $ comm --nocheck-order -13 \ <(sed 's/^\[[ 0-9.]*\] //' /tmp/A) \ <(sed 's/^\[[ 0-9.]*\] //' /tmp/B) message four however, I'm not sure if that fix would easily apply. It looks like I provided a disclaimer notice in check_result(): # Note: when comparing dmesg output, the kernel log timestamps # help differentiate repeated testing runs. Remove them with a # post-comparison sed filter. so I wonder if comm will get confused with repeated selftest runs? Using diff/comm was a trick that I surprised worked this long :) Maybe it can still hold, but I'll have to run a few experiements.
On Mon, Dec 18, 2023 at 11:44:23AM -0500, Joe Lawrence wrote: > > [ ... snip ... ] > > If we pre-trim the timestamps, the output is what we expect: > > $ comm --nocheck-order -13 \ > <(sed 's/^\[[ 0-9.]*\] //' /tmp/A) \ > <(sed 's/^\[[ 0-9.]*\] //' /tmp/B) > message four > > however, I'm not sure if that fix would easily apply. It looks like I > provided a disclaimer notice in check_result(): > > # Note: when comparing dmesg output, the kernel log timestamps > # help differentiate repeated testing runs. Remove them with a > # post-comparison sed filter. > > so I wonder if comm will get confused with repeated selftest runs? > Using diff/comm was a trick that I surprised worked this long :) Maybe > it can still hold, but I'll have to run a few experiements. Hi Alexander, I tested this idea and yeah, it breaks. Google brought me back to Petr's report from when way back when I tried to omit the timestamps: https://lore.kernel.org/all/20200617092352.GT31238@alley/ that was with diff and not comm, but I could trip up the latter command with ~22 iterations of the selftests. So I took a crack at refactoring: instead of saving intermediate dmesg.saved files, on starting a test, the script logs and remembers a LAST_DMESG entry. When it later checks the test result, it dumps dmesg starting from after LAST_DMESG entry. This is *very* lightly tested, but I thought maybe you could give it a spin. Hopefully it's less brittle than diff/comm strategy. -- Joe -->8-- -->8-- -->8-- -->8-- -->8-- -->8-- -->8-- -->8-- -->8-- -->8-- diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh index c8416c54b463..b012723e631a 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -42,17 +42,6 @@ function die() { exit 1 } -# save existing dmesg so we can detect new content -function save_dmesg() { - SAVED_DMESG=$(mktemp --tmpdir -t klp-dmesg-XXXXXX) - dmesg > "$SAVED_DMESG" -} - -# cleanup temporary dmesg file from save_dmesg() -function cleanup_dmesg_file() { - rm -f "$SAVED_DMESG" -} - function push_config() { DYNAMIC_DEBUG=$(grep '^kernel/livepatch' /sys/kernel/debug/dynamic_debug/control | \ awk -F'[: ]' '{print "file " $1 " line " $2 " " $4}') @@ -99,7 +88,6 @@ function set_ftrace_enabled() { function cleanup() { pop_config - cleanup_dmesg_file } # setup_config - save the current config and set a script exit trap that @@ -280,7 +268,13 @@ function set_pre_patch_ret { function start_test { local test="$1" - save_dmesg + # Dump something unique into the dmesg log, then stash the entry + # in LAST_DMESG. The check_result() function will use it to + # find new kernel messages since the test started. + local timestamp="$(date --rfc-3339=ns)" + log "livepatch kselftest timestamp: $timestamp" + LAST_DMESG=$(dmesg | grep "livepatch kselftest timestamp: $timestamp") + echo -n "TEST: $test ... " log "===== TEST: $test =====" } @@ -291,11 +285,11 @@ function check_result { local expect="$*" local result - # Note: when comparing dmesg output, the kernel log timestamps - # help differentiate repeated testing runs. Remove them with a - # post-comparison sed filter. - - result=$(dmesg | comm --nocheck-order -13 "$SAVED_DMESG" - | \ + # Test results include any new dmesg entry since LAST_DMESG, then: + # - include lines matching keywords + # - exclude lines matching keywords + # - filter out dmesg timestamp prefixes + result=$(dmesg | awk -v last_dmesg="$LAST_DMESG" 'p; $0 == last_dmesg { p=1 }' | \ grep -e 'livepatch:' -e 'test_klp' | \ grep -v '\(tainting\|taints\) kernel' | \ sed 's/^\[[ 0-9.]*\] //') @@ -306,8 +300,6 @@ function check_result { echo -e "not ok\n\n$(diff -upr --label expected --label result <(echo "$expect") <(echo "$result"))\n" die "livepatch kselftest(s) failed" fi - - cleanup_dmesg_file } # check_sysfs_rights(modname, rel_path, expected_rights) - check sysfs
On Mon, Dec 18, 2023 at 05:44:54PM -0500, Joe Lawrence wrote: Hi Joe! ... > > If we pre-trim the timestamps, the output is what we expect: > > > > $ comm --nocheck-order -13 \ > > <(sed 's/^\[[ 0-9.]*\] //' /tmp/A) \ > > <(sed 's/^\[[ 0-9.]*\] //' /tmp/B) > > message four > > > > however, I'm not sure if that fix would easily apply. It looks like I > > provided a disclaimer notice in check_result(): > > > > # Note: when comparing dmesg output, the kernel log timestamps > > # help differentiate repeated testing runs. Remove them with a > > # post-comparison sed filter. > > > > so I wonder if comm will get confused with repeated selftest runs? I would think so. AFAICT even a single run would produce duplicate lines. ... > This is *very* lightly tested, but I thought maybe you could give it a > spin. Hopefully it's less brittle than diff/comm strategy. That seems to be working. However, please see below. ... > @@ -280,7 +268,13 @@ function set_pre_patch_ret { > function start_test { > local test="$1" > > - save_dmesg > + # Dump something unique into the dmesg log, then stash the entry > + # in LAST_DMESG. The check_result() function will use it to > + # find new kernel messages since the test started. > + local timestamp="$(date --rfc-3339=ns)" > + log "livepatch kselftest timestamp: $timestamp" > + LAST_DMESG=$(dmesg | grep "livepatch kselftest timestamp: $timestamp") Not sure if it not paranoid mode, but still.. If the 'log' call is guaranteed synced? AKA would 'grep' always catch the line? And yeah.. if the log output is pushed away (e.g by a crazy-dumping concurrent logger), then nothing here would work. But this is not a new problem, so just my two cents. > echo -n "TEST: $test ... " > log "===== TEST: $test =====" > } Thanks!
On 12/19/23 04:45, Alexander Gordeev wrote: > On Mon, Dec 18, 2023 at 05:44:54PM -0500, Joe Lawrence wrote: > >> @@ -280,7 +268,13 @@ function set_pre_patch_ret { >> function start_test { >> local test="$1" >> >> - save_dmesg >> + # Dump something unique into the dmesg log, then stash the entry >> + # in LAST_DMESG. The check_result() function will use it to >> + # find new kernel messages since the test started. >> + local timestamp="$(date --rfc-3339=ns)" >> + log "livepatch kselftest timestamp: $timestamp" >> + LAST_DMESG=$(dmesg | grep "livepatch kselftest timestamp: $timestamp") > > Not sure if it not paranoid mode, but still.. > If the 'log' call is guaranteed synced? AKA would 'grep' always catch the line? > > And yeah.. if the log output is pushed away (e.g by a crazy-dumping concurrent > logger), then nothing here would work. But this is not a new problem, so just > my two cents. > Good question. I added the timestamp message to ensure there would be something in the log to grab onto... but I'm not sure what guarantees there are about syncing back out through dmesg. There is a loop_util() utility function in the script that could be used to wait, like: log "$last_dmesg_msg" loop_until "dmesg | grep -q '$last_dmesg_msg'" || die "Can't find canary dmesg entry, buffer overrun?" LAST_DMESG=$(dmesg | grep "$last_dmesg_msg") That should catch 1) short latencies and 2) buffer rollover. Maybe that is good enough?
On Tue, Dec 19, 2023 at 09:50:18AM -0500, Joe Lawrence wrote: > There is a loop_util() utility function in the script that could be used > to wait, like: > > log "$last_dmesg_msg" > loop_until "dmesg | grep -q '$last_dmesg_msg'" || > die "Can't find canary dmesg entry, buffer overrun?" > LAST_DMESG=$(dmesg | grep "$last_dmesg_msg") > > That should catch 1) short latencies and 2) buffer rollover. Maybe that > is good enough? I guess, if loop_until() would fail in case a message did not show up in meaningful time, that would be it. > -- > Joe >
On Tue 2023-12-19 09:50:18, Joe Lawrence wrote: > On 12/19/23 04:45, Alexander Gordeev wrote: > > On Mon, Dec 18, 2023 at 05:44:54PM -0500, Joe Lawrence wrote: > > > >> @@ -280,7 +268,13 @@ function set_pre_patch_ret { > >> function start_test { > >> local test="$1" > >> > >> - save_dmesg > >> + # Dump something unique into the dmesg log, then stash the entry > >> + # in LAST_DMESG. The check_result() function will use it to > >> + # find new kernel messages since the test started. > >> + local timestamp="$(date --rfc-3339=ns)" > >> + log "livepatch kselftest timestamp: $timestamp" > >> + LAST_DMESG=$(dmesg | grep "livepatch kselftest timestamp: $timestamp") I like this approach. > > Not sure if it not paranoid mode, but still.. > > If the 'log' call is guaranteed synced? AKA would 'grep' always catch the line? I believe that the write is synchronized. The "log" command does: function log() { echo "$1" > /dev/kmsg } The message is stored into the log buffer during the write to /dev/kmsg(). See devkmsg_emit() in devkmsg_write(), where devkmsg_write() is .write_iter callback in struct file_operations. const struct file_operations kmsg_fops = { .open = devkmsg_open, .read = devkmsg_read, .write_iter = devkmsg_write, .llseek = devkmsg_llseek, .poll = devkmsg_poll, .release = devkmsg_release, }; I would explect that the write() callback is called directly when shell is writing "echo" stdout to /dev/kmsg. I hope that all this is sychronous. Everything is in memory. I think that write operations are asynchronous only when the data are written to a disk or another "slow" medium. And dmesg reads the data from the ring buffer as well. It is actually using /dev/kmsg as well by default. Best Regards, Petr
--- dmesg-saved1-rep.txt 2023-12-17 21:08:14.171014218 +0100 +++ dmesg1-rep.txt 2023-12-17 21:06:52.221014218 +0100 @@ -1,3 +1,3 @@ -[ 98.820331] livepatch: 'test_klp_state2': starting patching transition [ 100.031067] livepatch: 'test_klp_state2': completing patching transition [ 284.224335] livepatch: kernel.ftrace_enabled = 1 +[ 284.232921] ===== TEST: basic shadow variable API =====
Hi all, The livepatch selftest somehow fails in -next on s390 due to what appears to me as 'comm' usage issue. E.g the removal of timestamp- less line "with link type OSD_10GIG." in the below output forces 'comm' to produce the correct result in check_result() function of tools/testing/selftests/livepatch/functions.sh script: [ 11.229256] qeth 0.0.bd02: qdio: OSA on SC 2624 using AI:1 QEBSM:0 PRI:1 TDD:1 SIGA: W [ 11.250189] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.258763] qeth 0.0.bd00: Device is a OSD Express card (level: 0165) with link type OSD_10GIG. [ 11.259261] qeth 0.0.bd00: The device represents a Bridge Capable Port [ 11.262376] qeth 0.0.bd00: MAC address b2:96:9c:49:aa:e9 successfully registered [ 11.269654] qeth 0.0.bd00: MAC address 06:c6:b5:7d:ee:63 successfully registered By contrast, using the 'diff' instead works as a charm. But it was removed with commit 2f3f651f3756 ("selftests/livepatch: Use "comm" instead of "diff" for dmesg"). I am attaching the contents of "$expect" and "$result" script variables and the output of 'dmesg' before and after test run dmesg-saved.txt and dmesg.txt. Another 'dmesg' output dmesg-saved1.txt and dmesg1.txt also shows the same problem, which seems like something to do with sorting. The minimal reproducer attached is dmesg-saved1-rep.txt and dmesg1-rep.txt, that could be described as: The culprit is the extra space in [ 98.820331] timestamp, that from the script point of view produces the output with two extra lines: [ 100.031067] livepatch: 'test_klp_state2': completing patching transition [ 284.224335] livepatch: kernel.ftrace_enabled = 1 [ 284.232921] ===== TEST: basic shadow variable API ===== If the line with [ 98.820331] timestamp removed or changed to e.g [ 100.031066] (aka 1 us less), then the result output is as expected: [ 284.232921] ===== TEST: basic shadow variable API ===== Thanks! [ 11.189483] systemd-journald[943]: varlink-22: Changing state processed-method → idle-server [ 11.190633] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.190705] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.191385] systemd-journald[943]: varlink-22: Got POLLHUP from socket. [ 11.191389] systemd-journald[943]: varlink-22: Changing state idle-server → pending-disconnect [ 11.191392] systemd-journald[943]: varlink-22: Changing state pending-disconnect → processing-disconnect [ 11.191395] systemd-journald[943]: varlink-22: Changing state processing-disconnect → disconnected [ 11.200993] VFIO - User Level meta-driver version: 0.3 [ 11.224375] qeth 0.0.bd00: CHID: 1a0 CHPID: 98 [ 11.229256] qeth 0.0.bd02: qdio: OSA on SC 2624 using AI:1 QEBSM:0 PRI:1 TDD:1 SIGA: W [ 11.250189] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.258763] qeth 0.0.bd00: Device is a OSD Express card (level: 0165) with link type OSD_10GIG. [ 11.259261] qeth 0.0.bd00: The device represents a Bridge Capable Port [ 11.262376] qeth 0.0.bd00: MAC address b2:96:9c:49:aa:e9 successfully registered [ 11.269654] qeth 0.0.bd00: MAC address 06:c6:b5:7d:ee:63 successfully registered [ 11.272060] qeth 0.0.bd00 encbd00: renamed from eth0 [ 11.310918] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.323102] dasdconf.sh Warning: 0.0.627c is already online, not configuring [ 11.343058] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.347561] zram0: detected capacity change from 0 to 16777216 [ 11.359549] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.377984] Adding 8388604k swap on /dev/zram0. Priority:100 extents:1 across:8388604k SSDsc [ 11.381599] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.390605] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.397956] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.552967] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.569530] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.575683] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.605458] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.611661] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.615960] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.714654] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.716630] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.743224] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.745027] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.746763] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.751180] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.752995] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 11.920342] dasd-eckd 0.0.627f: A channel path to the device has become operational [ 11.920856] dasd-eckd 0.0.627f: A channel path to the device has become operational [ 11.928668] dasd-eckd 0.0.627f: New DASD 3390/0C (CU 3990/04) with 30051 cylinders, 15 heads, 224 sectors [ 11.941252] zfcp 0.0.1900: qdio: ZFCP on SC 61 using AI:1 QEBSM:0 PRI:1 TDD:1 SIGA: W [ 11.948281] dasd-eckd 0.0.627f: DASD with 4 KB/block, 21636720 KB total size, 48 KB/track, compatible disk layout [ 11.949271] dasdb:VOL1/ 0X627F: dasdb1 dasdb2 [ 11.970413] scsi host0: scsi_eh_0: sleeping [ 11.970560] scsi host0: zfcp [ 12.028341] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.032979] zfcp 0.0.1900: FC Endpoint Security of connection to remote port 0x500507630910d435 enabled: Encryption [ 12.035107] scsi 0:0:0:0: scsi scan: INQUIRY pass 1 length 36 [ 12.035239] scsi 0:0:0:0: scsi scan: INQUIRY successful with code 0x0 [ 12.035246] scsi 0:0:0:0: scsi scan: INQUIRY pass 2 length 164 [ 12.035345] scsi 0:0:0:0: scsi scan: INQUIRY successful with code 0x0 [ 12.035350] scsi 0:0:0:0: scsi scan: peripheral device type of 31, no device added [ 12.035679] scsi 0:0:0:0: scsi scan: Sending REPORT LUNS to (try 0) [ 12.036992] scsi 0:0:0:0: scsi scan: REPORT LUNS successful (try 0) result 0x0 [ 12.036994] scsi 0:0:0:0: scsi scan: REPORT LUN scan [ 12.037241] scsi 0:0:0:1084113024: scsi scan: INQUIRY pass 1 length 36 [ 12.037394] scsi 0:0:0:1084113024: scsi scan: INQUIRY successful with code 0x0 [ 12.037399] scsi 0:0:0:1084113024: scsi scan: INQUIRY pass 2 length 164 [ 12.037496] scsi 0:0:0:1084113024: scsi scan: INQUIRY successful with code 0x0 [ 12.037502] scsi 0:0:0:1084113024: Direct-Access IBM 2107900 .102 PQ: 0 ANSI: 6 [ 12.038919] scsi 0:0:0:1084113024: alua: supports implicit TPGS [ 12.038922] scsi 0:0:0:1084113024: alua: device naa.6005076309ffd435000000000000809e port group 0 rel port 203 [ 12.038952] sd 0:0:0:1084113024: sg_alloc: dev=0 [ 12.038982] sd 0:0:0:1084113024: Attached scsi generic sg0 type 0 [ 12.039272] scsi 0:0:0:1084178560: scsi scan: INQUIRY pass 1 length 36 [ 12.039319] sd 0:0:0:1084113024: Power-on or device reset occurred [ 12.039325] sd 0:0:0:1084113024: [sda] tag#640 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.039328] sd 0:0:0:1084113024: [sda] tag#640 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.039330] sd 0:0:0:1084113024: [sda] tag#640 Sense Key : Unit Attention [current] [ 12.039333] sd 0:0:0:1084113024: [sda] tag#640 Add. Sense: Power on, reset, or bus device reset occurred [ 12.039384] scsi 0:0:0:1084178560: scsi scan: INQUIRY successful with code 0x0 [ 12.039404] scsi 0:0:0:1084178560: scsi scan: INQUIRY pass 2 length 164 [ 12.039505] scsi 0:0:0:1084178560: scsi scan: INQUIRY successful with code 0x0 [ 12.039510] scsi 0:0:0:1084178560: Direct-Access IBM 2107900 .102 PQ: 0 ANSI: 6 [ 12.040890] scsi 0:0:0:1084178560: alua: supports implicit TPGS [ 12.040892] scsi 0:0:0:1084178560: alua: device naa.6005076309ffd435000000000000809f port group 0 rel port 203 [ 12.040956] sd 0:0:0:1084178560: sg_alloc: dev=1 [ 12.040983] sd 0:0:0:1084178560: Attached scsi generic sg1 type 0 [ 12.041244] scsi 0:0:0:1084113025: scsi scan: INQUIRY pass 1 length 36 [ 12.041362] sd 0:0:0:1084178560: Power-on or device reset occurred [ 12.041367] sd 0:0:0:1084178560: [sdb] tag#3264 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.041369] sd 0:0:0:1084178560: [sdb] tag#3264 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.041371] sd 0:0:0:1084178560: [sdb] tag#3264 Sense Key : Unit Attention [current] [ 12.041373] sd 0:0:0:1084178560: [sdb] tag#3264 Add. Sense: Power on, reset, or bus device reset occurred [ 12.041405] scsi 0:0:0:1084113025: scsi scan: INQUIRY successful with code 0x0 [ 12.041410] scsi 0:0:0:1084113025: scsi scan: INQUIRY pass 2 length 164 [ 12.041580] scsi 0:0:0:1084113025: scsi scan: INQUIRY successful with code 0x0 [ 12.041585] scsi 0:0:0:1084113025: Direct-Access IBM 2107900 .102 PQ: 0 ANSI: 6 [ 12.042960] scsi 0:0:0:1084113025: alua: supports implicit TPGS [ 12.042962] scsi 0:0:0:1084113025: alua: device naa.6005076309ffd435000000000000819e port group 0 rel port 203 [ 12.043005] sd 0:0:0:1084113025: sg_alloc: dev=2 [ 12.043063] sd 0:0:0:1084113025: Attached scsi generic sg2 type 0 [ 12.043298] scsi 0:0:0:1084178561: scsi scan: INQUIRY pass 1 length 36 [ 12.043309] sd 0:0:0:1084113025: Power-on or device reset occurred [ 12.043312] sd 0:0:0:1084113025: [sdc] tag#641 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.043314] sd 0:0:0:1084113025: [sdc] tag#641 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.043316] sd 0:0:0:1084113025: [sdc] tag#641 Sense Key : Unit Attention [current] [ 12.043317] sd 0:0:0:1084113025: [sdc] tag#641 Add. Sense: Power on, reset, or bus device reset occurred [ 12.043423] scsi 0:0:0:1084178561: scsi scan: INQUIRY successful with code 0x0 [ 12.043428] scsi 0:0:0:1084178561: scsi scan: INQUIRY pass 2 length 164 [ 12.043531] scsi 0:0:0:1084178561: scsi scan: INQUIRY successful with code 0x0 [ 12.043536] scsi 0:0:0:1084178561: Direct-Access IBM 2107900 .102 PQ: 0 ANSI: 6 [ 12.044875] scsi 0:0:0:1084178561: alua: supports implicit TPGS [ 12.044877] scsi 0:0:0:1084178561: alua: device naa.6005076309ffd435000000000000819f port group 0 rel port 203 [ 12.044927] scsi 0:0:0:1084178561: sg_alloc: dev=3 [ 12.044950] scsi 0:0:0:1084178561: Attached scsi generic sg3 type 0 [ 12.045107] sd 0:0:0:1084113024: scsi scan: device exists on 0:0:0:1084113024 [ 12.045243] sd 0:0:0:1084178561: Power-on or device reset occurred [ 12.045244] sd 0:0:0:1084178560: scsi scan: device exists on 0:0:0:1084178560 [ 12.045247] sd 0:0:0:1084178561: [sdd] tag#3265 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.045250] sd 0:0:0:1084178561: [sdd] tag#3265 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.045252] sd 0:0:0:1084178561: [sdd] tag#3265 Sense Key : Unit Attention [current] [ 12.045254] sd 0:0:0:1084178561: [sdd] tag#3265 Add. Sense: Power on, reset, or bus device reset occurred [ 12.045305] sd 0:0:0:1084113025: scsi scan: device exists on 0:0:0:1084113025 [ 12.045373] sd 0:0:0:1084178561: scsi scan: device exists on 0:0:0:1084178561 [ 12.050288] sd 0:0:0:1084113024: [sda] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.050294] sd 0:0:0:1084113024: alua: transition timeout set to 60 seconds [ 12.050309] sd 0:0:0:1084113024: alua: port group 00 state A preferred supports tolusnA [ 12.050393] sd 0:0:0:1084113024: [sda] Write Protect is off [ 12.050395] sd 0:0:0:1084113024: [sda] Mode Sense: ed 00 00 08 [ 12.050571] sd 0:0:0:1084113024: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.050678] sd 0:0:0:1084113024: [sda] tag#648 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.050680] sd 0:0:0:1084113024: [sda] tag#648 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.050682] sd 0:0:0:1084113024: [sda] tag#648 Sense Key : Illegal Request [current] [ 12.050684] sd 0:0:0:1084113024: [sda] tag#648 Add. Sense: Invalid field in cdb [ 12.052828] sd 0:0:0:1084113024: [sda] tag#651 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.052830] sd 0:0:0:1084113024: [sda] tag#651 CDB: Inquiry 12 01 b9 00 04 00 [ 12.052832] sd 0:0:0:1084113024: [sda] tag#651 Sense Key : Illegal Request [current] [ 12.052833] sd 0:0:0:1084113024: [sda] tag#651 Add. Sense: Invalid field in cdb [ 12.054252] sda: sda1 [ 12.059079] sd 0:0:0:1084113024: [sda] Attached SCSI disk [ 12.060240] sd 0:0:0:1084113025: [sdc] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.060242] sd 0:0:0:1084178561: [sdd] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.060287] sd 0:0:0:1084178561: alua: transition timeout set to 60 seconds [ 12.060290] sd 0:0:0:1084178561: alua: port group 00 state A preferred supports tolusnA [ 12.060294] sd 0:0:0:1084113025: alua: transition timeout set to 60 seconds [ 12.060295] sd 0:0:0:1084178560: [sdb] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.060296] sd 0:0:0:1084113025: alua: port group 00 state A preferred supports tolusnA [ 12.060330] sd 0:0:0:1084178560: alua: transition timeout set to 60 seconds [ 12.060334] sd 0:0:0:1084113025: [sdc] Write Protect is off [ 12.060334] sd 0:0:0:1084178560: alua: port group 00 state A preferred supports tolusnA [ 12.060336] sd 0:0:0:1084178561: [sdd] Write Protect is off [ 12.060336] sd 0:0:0:1084113025: [sdc] Mode Sense: ed 00 00 08 [ 12.060339] sd 0:0:0:1084178561: [sdd] Mode Sense: ed 00 00 08 [ 12.060397] sd 0:0:0:1084178560: [sdb] Write Protect is off [ 12.060398] sd 0:0:0:1084178560: [sdb] Mode Sense: ed 00 00 08 [ 12.060544] sd 0:0:0:1084113025: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.060544] sd 0:0:0:1084178561: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.060588] sd 0:0:0:1084178560: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.060692] sd 0:0:0:1084178560: [sdb] tag#1226 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.060695] sd 0:0:0:1084178560: [sdb] tag#1226 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.060697] sd 0:0:0:1084178560: [sdb] tag#1226 Sense Key : Illegal Request [current] [ 12.060699] sd 0:0:0:1084178560: [sdb] tag#1226 Add. Sense: Invalid field in cdb [ 12.060784] sd 0:0:0:1084178561: [sdd] tag#1227 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.060786] sd 0:0:0:1084178561: [sdd] tag#1227 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.060788] sd 0:0:0:1084178561: [sdd] tag#1227 Sense Key : Illegal Request [current] [ 12.060790] sd 0:0:0:1084178561: [sdd] tag#1227 Add. Sense: Invalid field in cdb [ 12.060797] sd 0:0:0:1084113025: [sdc] tag#672 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.060816] sd 0:0:0:1084178561: [sdd] Disabling DIF Type 1 protection [ 12.060817] sd 0:0:0:1084113025: [sdc] tag#672 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.060818] sd 0:0:0:1084178561: [sdd] Enabling DIF Type 0 protection [ 12.060820] sd 0:0:0:1084113025: [sdc] tag#672 Sense Key : Illegal Request [current] [ 12.060823] sd 0:0:0:1084113025: [sdc] tag#672 Add. Sense: Invalid field in cdb [ 12.060828] sd 0:0:0:1084113025: [sdc] Disabling DIF Type 1 protection [ 12.060830] sd 0:0:0:1084113025: [sdc] Enabling DIF Type 0 protection [ 12.063360] sd 0:0:0:1084178561: [sdd] tag#3274 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.063363] sd 0:0:0:1084178561: [sdd] tag#3274 CDB: Inquiry 12 01 b9 00 04 00 [ 12.063364] sd 0:0:0:1084178561: [sdd] tag#3274 Sense Key : Illegal Request [current] [ 12.063367] sd 0:0:0:1084178561: [sdd] tag#3274 Add. Sense: Invalid field in cdb [ 12.063825] sd 0:0:0:1084113025: [sdc] tag#675 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.063827] sd 0:0:0:1084113025: [sdc] tag#675 CDB: Inquiry 12 01 b9 00 04 00 [ 12.063829] sd 0:0:0:1084113025: [sdc] tag#675 Sense Key : Illegal Request [current] [ 12.063830] sd 0:0:0:1084113025: [sdc] tag#675 Add. Sense: Invalid field in cdb [ 12.063837] sd 0:0:0:1084178560: [sdb] tag#1230 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.063839] sd 0:0:0:1084178560: [sdb] tag#1230 CDB: Inquiry 12 01 b9 00 04 00 [ 12.063841] sd 0:0:0:1084178560: [sdb] tag#1230 Sense Key : Illegal Request [current] [ 12.063843] sd 0:0:0:1084178560: [sdb] tag#1230 Add. Sense: Invalid field in cdb [ 12.063920] sd 0:0:0:1084178561: [sdd] Attached SCSI disk [ 12.064305] sd 0:0:0:1084178560: [sdb] Attached SCSI disk [ 12.064457] sd 0:0:0:1084113025: [sdc] Attached SCSI disk [ 12.118155] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.173553] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.213521] device-mapper: multipath service-time: version 0.3.0 loaded [ 12.320946] zfcp 0.0.1940: qdio: ZFCP on SC 62 using AI:1 QEBSM:0 PRI:1 TDD:1 SIGA: W [ 12.350368] scsi host1: scsi_eh_1: sleeping [ 12.350411] scsi host1: zfcp [ 12.415631] zfcp 0.0.1940: FC Endpoint Security of connection to remote port 0x500507630914d435 enabled: Encryption [ 12.417541] scsi 1:0:0:0: scsi scan: INQUIRY pass 1 length 36 [ 12.417634] scsi 1:0:0:0: scsi scan: INQUIRY successful with code 0x0 [ 12.417658] scsi 1:0:0:0: scsi scan: INQUIRY pass 2 length 164 [ 12.417749] scsi 1:0:0:0: scsi scan: INQUIRY successful with code 0x0 [ 12.417755] scsi 1:0:0:0: scsi scan: peripheral device type of 31, no device added [ 12.418087] scsi 1:0:0:0: scsi scan: Sending REPORT LUNS to (try 0) [ 12.418541] scsi 1:0:0:0: scsi scan: REPORT LUNS successful (try 0) result 0x0 [ 12.418543] scsi 1:0:0:0: scsi scan: REPORT LUN scan [ 12.418789] scsi 1:0:0:1084113024: scsi scan: INQUIRY pass 1 length 36 [ 12.418903] scsi 1:0:0:1084113024: scsi scan: INQUIRY successful with code 0x0 [ 12.418908] scsi 1:0:0:1084113024: scsi scan: INQUIRY pass 2 length 164 [ 12.419005] scsi 1:0:0:1084113024: scsi scan: INQUIRY successful with code 0x0 [ 12.419010] scsi 1:0:0:1084113024: Direct-Access IBM 2107900 .102 PQ: 0 ANSI: 6 [ 12.420462] scsi 1:0:0:1084113024: alua: supports implicit TPGS [ 12.420466] scsi 1:0:0:1084113024: alua: device naa.6005076309ffd435000000000000809e port group 0 rel port 243 [ 12.420514] sd 1:0:0:1084113024: sg_alloc: dev=4 [ 12.420566] sd 1:0:0:1084113024: Attached scsi generic sg4 type 0 [ 12.420859] scsi 1:0:0:1084178560: scsi scan: INQUIRY pass 1 length 36 [ 12.420863] sd 1:0:0:1084113024: Power-on or device reset occurred [ 12.420867] sd 1:0:0:1084113024: [sde] tag#1664 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.420870] sd 1:0:0:1084113024: [sde] tag#1664 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.420872] sd 1:0:0:1084113024: [sde] tag#1664 Sense Key : Unit Attention [current] [ 12.420874] sd 1:0:0:1084113024: [sde] tag#1664 Add. Sense: Power on, reset, or bus device reset occurred [ 12.420971] scsi 1:0:0:1084178560: scsi scan: INQUIRY successful with code 0x0 [ 12.420976] scsi 1:0:0:1084178560: scsi scan: INQUIRY pass 2 length 164 [ 12.421074] scsi 1:0:0:1084178560: scsi scan: INQUIRY successful with code 0x0 [ 12.421079] scsi 1:0:0:1084178560: Direct-Access IBM 2107900 .102 PQ: 0 ANSI: 6 [ 12.422435] scsi 1:0:0:1084178560: alua: supports implicit TPGS [ 12.422438] scsi 1:0:0:1084178560: alua: device naa.6005076309ffd435000000000000809f port group 0 rel port 243 [ 12.422481] sd 1:0:0:1084178560: sg_alloc: dev=5 [ 12.422513] sd 1:0:0:1084178560: Attached scsi generic sg5 type 0 [ 12.422818] scsi 1:0:0:1084113025: scsi scan: INQUIRY pass 1 length 36 [ 12.422918] scsi 1:0:0:1084113025: scsi scan: INQUIRY successful with code 0x0 [ 12.422923] scsi 1:0:0:1084113025: scsi scan: INQUIRY pass 2 length 164 [ 12.423017] scsi 1:0:0:1084113025: scsi scan: INQUIRY successful with code 0x0 [ 12.423022] scsi 1:0:0:1084113025: Direct-Access IBM 2107900 .102 PQ: 0 ANSI: 6 [ 12.423169] sd 1:0:0:1084178560: Power-on or device reset occurred [ 12.423173] sd 1:0:0:1084178560: [sdf] tag#896 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.423175] sd 1:0:0:1084178560: [sdf] tag#896 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.423176] sd 1:0:0:1084178560: [sdf] tag#896 Sense Key : Unit Attention [current] [ 12.423178] sd 1:0:0:1084178560: [sdf] tag#896 Add. Sense: Power on, reset, or bus device reset occurred [ 12.424628] scsi 1:0:0:1084113025: alua: supports implicit TPGS [ 12.424630] scsi 1:0:0:1084113025: alua: device naa.6005076309ffd435000000000000819e port group 0 rel port 243 [ 12.424675] sd 1:0:0:1084113025: sg_alloc: dev=6 [ 12.424746] sd 1:0:0:1084113025: Attached scsi generic sg6 type 0 [ 12.425035] scsi 1:0:0:1084178561: scsi scan: INQUIRY pass 1 length 36 [ 12.425136] scsi 1:0:0:1084178561: scsi scan: INQUIRY successful with code 0x0 [ 12.425141] scsi 1:0:0:1084178561: scsi scan: INQUIRY pass 2 length 164 [ 12.425154] sd 1:0:0:1084113025: Power-on or device reset occurred [ 12.425157] sd 1:0:0:1084113025: [sdg] tag#1665 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.425159] sd 1:0:0:1084113025: [sdg] tag#1665 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.425161] sd 1:0:0:1084113025: [sdg] tag#1665 Sense Key : Unit Attention [current] [ 12.425163] sd 1:0:0:1084113025: [sdg] tag#1665 Add. Sense: Power on, reset, or bus device reset occurred [ 12.425233] scsi 1:0:0:1084178561: scsi scan: INQUIRY successful with code 0x0 [ 12.425238] scsi 1:0:0:1084178561: Direct-Access IBM 2107900 .102 PQ: 0 ANSI: 6 [ 12.426688] scsi 1:0:0:1084178561: alua: supports implicit TPGS [ 12.426691] scsi 1:0:0:1084178561: alua: device naa.6005076309ffd435000000000000819f port group 0 rel port 243 [ 12.426934] sd 1:0:0:1084178561: sg_alloc: dev=7 [ 12.427059] sd 1:0:0:1084178561: Attached scsi generic sg7 type 0 [ 12.427341] sd 1:0:0:1084113024: scsi scan: device exists on 1:0:0:1084113024 [ 12.427411] sd 1:0:0:1084178561: Power-on or device reset occurred [ 12.427414] sd 1:0:0:1084178561: [sdh] tag#897 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.427417] sd 1:0:0:1084178561: [sdh] tag#897 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.427419] sd 1:0:0:1084178561: [sdh] tag#897 Sense Key : Unit Attention [current] [ 12.427422] sd 1:0:0:1084178561: [sdh] tag#897 Add. Sense: Power on, reset, or bus device reset occurred [ 12.427766] sd 1:0:0:1084178560: scsi scan: device exists on 1:0:0:1084178560 [ 12.428386] sd 1:0:0:1084113025: scsi scan: device exists on 1:0:0:1084113025 [ 12.428806] sd 1:0:0:1084178561: scsi scan: device exists on 1:0:0:1084178561 [ 12.440305] sd 1:0:0:1084113025: [sdg] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.440309] sd 1:0:0:1084113024: [sde] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.440328] sd 1:0:0:1084178561: [sdh] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.440365] sd 1:0:0:1084178560: [sdf] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.440405] sd 1:0:0:1084113025: [sdg] Write Protect is off [ 12.440406] sd 1:0:0:1084113025: [sdg] Mode Sense: ed 00 00 08 [ 12.440408] sd 1:0:0:1084113024: [sde] Write Protect is off [ 12.440410] sd 1:0:0:1084113024: [sde] Mode Sense: ed 00 00 08 [ 12.440426] sd 1:0:0:1084178561: [sdh] Write Protect is off [ 12.440428] sd 1:0:0:1084178561: [sdh] Mode Sense: ed 00 00 08 [ 12.440451] sd 1:0:0:1084178560: [sdf] Write Protect is off [ 12.440453] sd 1:0:0:1084178560: [sdf] Mode Sense: ed 00 00 08 [ 12.440613] sd 1:0:0:1084113025: [sdg] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.440615] sd 1:0:0:1084113024: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.440625] sd 1:0:0:1084178561: [sdh] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.440627] sd 1:0:0:1084178560: [sdf] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.440709] sd 1:0:0:1084113024: [sde] tag#2055 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.440712] sd 1:0:0:1084113024: [sde] tag#2055 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.440714] sd 1:0:0:1084113024: [sde] tag#2055 Sense Key : Illegal Request [current] [ 12.440716] sd 1:0:0:1084113024: [sde] tag#2055 Add. Sense: Invalid field in cdb [ 12.440722] sd 1:0:0:1084178560: [sdf] tag#906 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.440724] sd 1:0:0:1084178560: [sdf] tag#906 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.440727] sd 1:0:0:1084178560: [sdf] tag#906 Sense Key : Illegal Request [current] [ 12.440729] sd 1:0:0:1084178560: [sdf] tag#906 Add. Sense: Invalid field in cdb [ 12.440826] sd 1:0:0:1084113025: [sdg] tag#1677 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.440846] sd 1:0:0:1084113025: [sdg] tag#1677 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.440849] sd 1:0:0:1084113025: [sdg] tag#1677 Sense Key : Illegal Request [current] [ 12.440851] sd 1:0:0:1084113025: [sdg] tag#1677 Add. Sense: Invalid field in cdb [ 12.440855] sd 1:0:0:1084113025: [sdg] Disabling DIF Type 1 protection [ 12.440857] sd 1:0:0:1084113025: [sdg] Enabling DIF Type 0 protection [ 12.440861] sd 1:0:0:1084178561: [sdh] tag#325 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.440874] sd 1:0:0:1084178561: [sdh] tag#325 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.440881] sd 1:0:0:1084178561: [sdh] tag#325 Sense Key : Illegal Request [current] [ 12.440882] sd 1:0:0:1084178561: [sdh] tag#325 Add. Sense: Invalid field in cdb [ 12.440886] sd 1:0:0:1084178561: [sdh] Disabling DIF Type 1 protection [ 12.440888] sd 1:0:0:1084178561: [sdh] Enabling DIF Type 0 protection [ 12.443759] sd 1:0:0:1084113024: [sde] tag#1679 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.443780] sd 1:0:0:1084113024: [sde] tag#1679 CDB: Inquiry 12 01 b9 00 04 00 [ 12.443782] sd 1:0:0:1084113024: [sde] tag#1679 Sense Key : Illegal Request [current] [ 12.443785] sd 1:0:0:1084113024: [sde] tag#1679 Add. Sense: Invalid field in cdb [ 12.443797] sd 1:0:0:1084178560: [sdf] tag#327 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.443800] sd 1:0:0:1084178560: [sdf] tag#327 CDB: Inquiry 12 01 b9 00 04 00 [ 12.443802] sd 1:0:0:1084178560: [sdf] tag#327 Sense Key : Illegal Request [current] [ 12.443805] sd 1:0:0:1084178560: [sdf] tag#327 Add. Sense: Invalid field in cdb [ 12.443902] sd 1:0:0:1084113025: [sdg] tag#1682 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.443905] sd 1:0:0:1084113025: [sdg] tag#1682 CDB: Inquiry 12 01 b9 00 04 00 [ 12.443908] sd 1:0:0:1084113025: [sdg] tag#1682 Sense Key : Illegal Request [current] [ 12.443910] sd 1:0:0:1084113025: [sdg] tag#1682 Add. Sense: Invalid field in cdb [ 12.443912] sd 1:0:0:1084178561: [sdh] tag#2057 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.443917] sd 1:0:0:1084178561: [sdh] tag#2057 CDB: Inquiry 12 01 b9 00 04 00 [ 12.443919] sd 1:0:0:1084178561: [sdh] tag#2057 Sense Key : Illegal Request [current] [ 12.443921] sd 1:0:0:1084178561: [sdh] tag#2057 Add. Sense: Invalid field in cdb [ 12.444277] sd 1:0:0:1084178560: [sdf] Attached SCSI disk [ 12.444413] sd 1:0:0:1084113025: [sdg] Attached SCSI disk [ 12.444437] sd 1:0:0:1084178561: [sdh] Attached SCSI disk [ 12.445055] sde: sde1 [ 12.445135] sd 1:0:0:1084113024: [sde] Attached SCSI disk [ 12.455157] mlx5_core 0001:00:00.0 ens8192f0np0: Link up [ 12.754503] mlx5_core 0000:00:00.0 ens8320f0np0: Link up [ 12.870161] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.871810] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.873288] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.879490] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.881609] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.883524] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 13.129973] systemd-journald[943]: Compressed data object 621 -> 266 using ZSTD [ 13.130596] systemd-journald[943]: Compressed data object 621 -> 274 using ZSTD [ 14.130283] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 52.526889] crw_info : CRW reports slct=0, oflw=0, chn=0, rsc=B, anc=0, erc=0, rsid=0 [ 64.832872] systemd-journald[943]: Compressed data object 533 -> 400 using ZSTD [ 64.919285] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 64.928008] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 65.045916] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 65.046557] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 65.206974] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 84.040569] livepatch: kernel.ftrace_enabled = 1 [ 84.047983] ===== TEST: basic function patching ===== [ 84.052146] % modprobe test_klp_livepatch [ 84.054139] test_klp_livepatch: tainting kernel with TAINT_LIVEPATCH [ 84.054277] livepatch: enabling patch 'test_klp_livepatch' [ 84.054279] livepatch: 'test_klp_livepatch': initializing patching transition [ 84.055514] livepatch: 'test_klp_livepatch': starting patching transition [ 84.867407] livepatch: 'test_klp_livepatch': completing patching transition [ 84.867542] livepatch: 'test_klp_livepatch': patching complete [ 84.872840] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 84.872891] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 84.872925] livepatch: 'test_klp_livepatch': starting unpatching transition [ 85.987407] livepatch: 'test_klp_livepatch': completing unpatching transition [ 85.989034] livepatch: 'test_klp_livepatch': unpatching complete [ 86.084797] % rmmod test_klp_livepatch [ 86.153886] ===== TEST: multiple livepatches ===== [ 86.157188] % modprobe test_klp_livepatch [ 86.158657] livepatch: enabling patch 'test_klp_livepatch' [ 86.158659] livepatch: 'test_klp_livepatch': initializing patching transition [ 86.159793] livepatch: 'test_klp_livepatch': starting patching transition [ 87.027437] livepatch: 'test_klp_livepatch': completing patching transition [ 87.027546] livepatch: 'test_klp_livepatch': patching complete [ 87.078385] test_klp_livepatch: this has been live patched [ 87.083290] % modprobe test_klp_atomic_replace replace=0 [ 87.085500] livepatch: enabling patch 'test_klp_atomic_replace' [ 87.085502] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 87.086685] livepatch: 'test_klp_atomic_replace': starting patching transition [ 87.907412] livepatch: 'test_klp_atomic_replace': completing patching transition [ 87.907555] livepatch: 'test_klp_atomic_replace': patching complete [ 88.004547] test_klp_livepatch: this has been live patched [ 88.005509] test_klp_atomic_replace: this has been live patched [ 88.005634] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 88.005721] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 88.005740] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 88.947422] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 88.948800] livepatch: 'test_klp_atomic_replace': unpatching complete [ 89.016537] % rmmod test_klp_atomic_replace [ 89.097952] test_klp_livepatch: this has been live patched [ 89.099036] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 89.099056] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 89.099079] livepatch: 'test_klp_livepatch': starting unpatching transition [ 89.907443] livepatch: 'test_klp_livepatch': completing unpatching transition [ 89.908927] livepatch: 'test_klp_livepatch': unpatching complete [ 90.008993] % rmmod test_klp_livepatch [ 90.075281] ===== TEST: atomic replace livepatch ===== [ 90.078563] % modprobe test_klp_livepatch [ 90.080025] livepatch: enabling patch 'test_klp_livepatch' [ 90.080027] livepatch: 'test_klp_livepatch': initializing patching transition [ 90.081063] livepatch: 'test_klp_livepatch': starting patching transition [ 91.667362] livepatch: 'test_klp_livepatch': completing patching transition [ 91.667466] livepatch: 'test_klp_livepatch': patching complete [ 91.711116] test_klp_livepatch: this has been live patched [ 91.715609] % modprobe test_klp_atomic_replace replace=1 [ 91.717349] livepatch: enabling patch 'test_klp_atomic_replace' [ 91.717350] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 91.718440] livepatch: 'test_klp_atomic_replace': starting patching transition [ 93.027449] livepatch: 'test_klp_atomic_replace': completing patching transition [ 93.028821] livepatch: 'test_klp_atomic_replace': patching complete [ 93.044211] test_klp_atomic_replace: this has been live patched [ 93.045414] % rmmod test_klp_livepatch [ 93.138826] test_klp_atomic_replace: this has been live patched [ 93.138945] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 93.139013] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 93.139039] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 93.987388] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 93.988892] livepatch: 'test_klp_atomic_replace': unpatching complete [ 94.048696] % rmmod test_klp_atomic_replace [ 94.131346] livepatch: kernel.ftrace_enabled = 1 [ 94.138074] ===== TEST: target module before livepatch ===== [ 94.141712] % modprobe test_klp_callbacks_mod [ 94.143390] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 94.147450] % modprobe test_klp_callbacks_demo [ 94.149518] livepatch: enabling patch 'test_klp_callbacks_demo' [ 94.149520] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 94.149584] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 94.149585] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 94.149586] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 95.827310] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 95.827414] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 95.827416] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 95.827417] livepatch: 'test_klp_callbacks_demo': patching complete [ 95.880751] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 95.880770] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 95.880792] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 95.880793] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 95.880795] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 96.947362] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 96.947467] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 96.947468] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 96.947470] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 96.991491] % rmmod test_klp_callbacks_demo [ 97.047939] % rmmod test_klp_callbacks_mod [ 97.049129] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 97.123448] ===== TEST: module_coming notifier ===== [ 97.126706] % modprobe test_klp_callbacks_demo [ 97.128201] livepatch: enabling patch 'test_klp_callbacks_demo' [ 97.128202] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 97.128221] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 97.128222] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 97.907366] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 97.907523] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 97.907524] livepatch: 'test_klp_callbacks_demo': patching complete [ 97.947504] % modprobe test_klp_callbacks_mod [ 97.948836] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 97.948839] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 97.948841] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 97.948883] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 97.949244] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 97.949263] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 97.949283] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 97.949284] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 97.949285] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 99.117355] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 99.117458] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 99.117460] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 99.117461] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 99.160962] % rmmod test_klp_callbacks_demo [ 99.207962] % rmmod test_klp_callbacks_mod [ 99.209122] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 99.283107] ===== TEST: module_going notifier ===== [ 99.286635] % modprobe test_klp_callbacks_mod [ 99.288047] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 99.291742] % modprobe test_klp_callbacks_demo [ 99.293440] livepatch: enabling patch 'test_klp_callbacks_demo' [ 99.293441] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 99.293462] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 99.293463] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 99.293465] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 101.027350] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 101.027455] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 101.027456] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 101.027458] livepatch: 'test_klp_callbacks_demo': patching complete [ 101.126745] % rmmod test_klp_callbacks_mod [ 101.127848] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 101.127863] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 101.127865] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 101.127866] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 101.187049] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 101.187066] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 101.187085] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 101.187086] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 102.067340] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 102.067461] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 102.067463] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 102.096546] % rmmod test_klp_callbacks_demo [ 102.183243] ===== TEST: module_coming and module_going notifiers ===== [ 102.186391] % modprobe test_klp_callbacks_demo [ 102.187856] livepatch: enabling patch 'test_klp_callbacks_demo' [ 102.187858] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 102.187879] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 102.187881] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 103.827367] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 103.827510] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 103.827511] livepatch: 'test_klp_callbacks_demo': patching complete [ 103.920248] % modprobe test_klp_callbacks_mod [ 103.921535] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 103.921537] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 103.921539] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 103.921581] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 103.922691] % rmmod test_klp_callbacks_mod [ 103.923756] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 103.923786] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 103.923788] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 103.923789] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 103.987019] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 103.987036] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 103.987057] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 103.987058] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 105.027318] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 105.027425] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 105.027426] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 105.096960] % rmmod test_klp_callbacks_demo [ 105.193366] ===== TEST: target module not present ===== [ 105.196426] % modprobe test_klp_callbacks_demo [ 105.197920] livepatch: enabling patch 'test_klp_callbacks_demo' [ 105.197923] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 105.197944] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 105.197945] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 106.957298] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 106.957421] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 106.957422] livepatch: 'test_klp_callbacks_demo': patching complete [ 107.027668] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 107.027687] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 107.027708] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 107.027709] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 108.067334] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 108.067440] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 108.067441] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 108.137719] % rmmod test_klp_callbacks_demo [ 108.213123] ===== TEST: pre-patch callback -ENODEV ===== [ 108.216268] % modprobe test_klp_callbacks_mod [ 108.217645] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 108.218019] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 108.219501] livepatch: enabling patch 'test_klp_callbacks_demo' [ 108.219503] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 108.219523] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 108.219524] livepatch: pre-patch callback failed for object 'vmlinux' [ 108.219524] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 108.219526] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 108.219527] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 108.219633] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 108.366951] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 108.367826] % rmmod test_klp_callbacks_mod [ 108.368966] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 108.463160] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 108.466160] % modprobe test_klp_callbacks_demo [ 108.467614] livepatch: enabling patch 'test_klp_callbacks_demo' [ 108.467616] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 108.467638] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 108.467639] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 109.667362] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 109.667472] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 109.667473] livepatch: 'test_klp_callbacks_demo': patching complete [ 109.689019] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 109.689979] % modprobe test_klp_callbacks_mod [ 109.691291] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 109.691294] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 109.691296] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 109.691297] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 109.837006] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 109.837051] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 109.837066] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 109.837088] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 109.837089] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 111.027394] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 111.027554] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 111.027555] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 111.048716] % rmmod test_klp_callbacks_demo [ 111.124777] ===== TEST: multiple target modules ===== [ 111.128696] % modprobe test_klp_callbacks_busy block_transition=N [ 111.130780] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 111.130784] test_klp_callbacks_busy: busymod_work_func enter [ 111.130786] test_klp_callbacks_busy: busymod_work_func exit [ 111.134478] % modprobe test_klp_callbacks_demo [ 111.135984] livepatch: enabling patch 'test_klp_callbacks_demo' [ 111.135986] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 111.136005] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 111.136006] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 111.137437] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 111.987405] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 111.987513] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 111.987515] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 111.987516] livepatch: 'test_klp_callbacks_demo': patching complete [ 112.058064] % modprobe test_klp_callbacks_mod [ 112.059514] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 112.059516] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 112.059518] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 112.059560] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 112.060788] % rmmod test_klp_callbacks_mod [ 112.061910] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 112.061925] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 112.061927] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 112.061928] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 112.137104] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 112.137122] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 112.137143] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 112.137144] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 112.137146] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 113.027375] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 113.029229] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 113.029230] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 113.029232] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 113.046037] % rmmod test_klp_callbacks_demo [ 113.117945] % rmmod test_klp_callbacks_busy [ 113.119077] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 113.184611] ===== TEST: busy target module ===== [ 113.187764] % modprobe test_klp_callbacks_busy block_transition=Y [ 113.189352] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 113.189356] test_klp_callbacks_busy: busymod_work_func enter [ 113.192845] % modprobe test_klp_callbacks_demo [ 113.194361] livepatch: enabling patch 'test_klp_callbacks_demo' [ 113.194363] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 113.194384] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 113.194385] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 113.195818] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 113.201297] % modprobe test_klp_callbacks_mod [ 113.202625] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 113.202627] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 113.202719] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 113.203890] % rmmod test_klp_callbacks_mod [ 113.204951] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 113.204963] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 113.204964] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 113.267080] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 113.267098] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 113.267246] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 115.907346] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 115.909130] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 115.909132] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 115.909133] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 115.989675] % rmmod test_klp_callbacks_demo [ 116.047878] % rmmod test_klp_callbacks_busy [ 116.066667] test_klp_callbacks_busy: busymod_work_func exit [ 116.066674] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 116.194426] ===== TEST: multiple livepatches ===== [ 116.197597] % modprobe test_klp_callbacks_demo [ 116.199116] livepatch: enabling patch 'test_klp_callbacks_demo' [ 116.199118] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 116.199139] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 116.199140] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 117.667375] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 117.667525] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 117.667527] livepatch: 'test_klp_callbacks_demo': patching complete [ 117.729276] % modprobe test_klp_callbacks_demo2 [ 117.731386] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 117.731388] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 117.731409] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 117.731410] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 118.707443] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 118.707552] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 118.707553] livepatch: 'test_klp_callbacks_demo2': patching complete [ 118.749944] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 118.749964] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 118.749986] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 118.749987] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 119.907371] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 119.907541] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 119.907543] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 119.960612] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 119.960630] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 119.960649] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 119.960650] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 120.867332] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 120.867435] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 120.867436] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 120.869780] % rmmod test_klp_callbacks_demo2 [ 120.917849] % rmmod test_klp_callbacks_demo [ 120.984589] ===== TEST: atomic replace ===== [ 120.987657] % modprobe test_klp_callbacks_demo [ 120.989209] livepatch: enabling patch 'test_klp_callbacks_demo' [ 120.989211] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 120.989232] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 120.989233] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 121.907296] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 121.907399] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 121.907401] livepatch: 'test_klp_callbacks_demo': patching complete [ 122.010261] % modprobe test_klp_callbacks_demo2 replace=1 [ 122.011745] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 122.011747] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 122.011767] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 122.011768] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 122.947337] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 122.947446] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 122.947448] livepatch: 'test_klp_callbacks_demo2': patching complete [ 123.030617] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 123.030637] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 123.030658] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 123.030659] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 123.907269] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 123.907424] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 123.907426] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 123.939784] % rmmod test_klp_callbacks_demo2 [ 123.987825] % rmmod test_klp_callbacks_demo [ 124.090148] livepatch: kernel.ftrace_enabled = 1 [ 124.097727] ===== TEST: basic shadow variable API ===== [ 124.101462] % modprobe test_klp_shadow_vars [ 124.103146] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 124.103148] test_klp_shadow_vars: got expected NULL result [ 124.103150] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 124.103151] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 124.103155] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 124.103156] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 124.103158] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 124.103160] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 124.103162] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 124.103163] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 124.103165] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 124.103167] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 124.103169] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 124.103170] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 124.103173] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 124.103174] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 124.103175] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 124.103176] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 124.103177] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 124.103179] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 124.103180] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 124.103181] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 124.103182] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 124.103184] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 124.103185] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 124.103186] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 124.103187] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 124.103189] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 124.103191] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 124.103193] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 124.103194] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 124.103196] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 124.103197] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 124.103199] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 124.103200] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 124.103201] test_klp_shadow_vars: got expected NULL result [ 124.103202] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 124.103204] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 124.103205] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 124.103206] test_klp_shadow_vars: got expected NULL result [ 124.103207] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 124.103208] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 124.103209] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 124.103211] test_klp_shadow_vars: got expected NULL result [ 124.103212] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 124.103213] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 124.103214] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 124.103215] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 124.103216] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 124.103218] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 124.103231] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 124.103232] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 124.103233] test_klp_shadow_vars: got expected NULL result [ 124.103234] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 124.103235] test_klp_shadow_vars: got expected NULL result [ 124.103236] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 124.103238] test_klp_shadow_vars: got expected NULL result [ 124.104546] % rmmod test_klp_shadow_vars [ 124.201338] livepatch: kernel.ftrace_enabled = 1 [ 124.208997] ===== TEST: system state modification ===== [ 124.212733] % modprobe test_klp_state [ 124.214788] livepatch: enabling patch 'test_klp_state' [ 124.214790] livepatch: 'test_klp_state': initializing patching transition [ 124.214811] test_klp_state: pre_patch_callback: vmlinux [ 124.214812] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 124.214814] livepatch: 'test_klp_state': starting patching transition [ 125.107324] livepatch: 'test_klp_state': completing patching transition [ 125.107502] test_klp_state: post_patch_callback: vmlinux [ 125.107504] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 125.107505] livepatch: 'test_klp_state': patching complete [ 125.132083] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 125.132120] livepatch: 'test_klp_state': initializing unpatching transition [ 125.132141] test_klp_state: pre_unpatch_callback: vmlinux [ 125.132142] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 125.132143] livepatch: 'test_klp_state': starting unpatching transition [ 125.987299] livepatch: 'test_klp_state': completing unpatching transition [ 125.987400] test_klp_state: post_unpatch_callback: vmlinux [ 125.987401] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 125.987402] livepatch: 'test_klp_state': unpatching complete [ 126.040767] % rmmod test_klp_state [ 126.104509] ===== TEST: taking over system state modification ===== [ 126.107689] % modprobe test_klp_state [ 126.109150] livepatch: enabling patch 'test_klp_state' [ 126.109152] livepatch: 'test_klp_state': initializing patching transition [ 126.109173] test_klp_state: pre_patch_callback: vmlinux [ 126.109174] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 126.109176] livepatch: 'test_klp_state': starting patching transition [ 127.107325] livepatch: 'test_klp_state': completing patching transition [ 127.107431] test_klp_state: post_patch_callback: vmlinux [ 127.107432] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 127.107433] livepatch: 'test_klp_state': patching complete [ 127.131647] % modprobe test_klp_state2 [ 127.133754] livepatch: enabling patch 'test_klp_state2' [ 127.133756] livepatch: 'test_klp_state2': initializing patching transition [ 127.133777] test_klp_state2: pre_patch_callback: vmlinux [ 127.133778] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 127.133779] livepatch: 'test_klp_state2': starting patching transition [ 127.987333] livepatch: 'test_klp_state2': completing patching transition [ 127.987456] test_klp_state2: post_patch_callback: vmlinux [ 127.987457] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 127.987458] livepatch: 'test_klp_state2': patching complete [ 128.051214] % rmmod test_klp_state [ 128.117089] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 128.117108] livepatch: 'test_klp_state2': initializing unpatching transition [ 128.117128] test_klp_state2: pre_unpatch_callback: vmlinux [ 128.117129] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 128.117131] livepatch: 'test_klp_state2': starting unpatching transition [ 129.027341] livepatch: 'test_klp_state2': completing unpatching transition [ 129.027447] test_klp_state2: post_unpatch_callback: vmlinux [ 129.027449] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 129.027451] livepatch: 'test_klp_state2': unpatching complete [ 129.127118] % rmmod test_klp_state2 [ 129.194469] ===== TEST: compatible cumulative livepatches ===== [ 129.197663] % modprobe test_klp_state2 [ 129.199144] livepatch: enabling patch 'test_klp_state2' [ 129.199146] livepatch: 'test_klp_state2': initializing patching transition [ 129.199166] test_klp_state2: pre_patch_callback: vmlinux [ 129.199167] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 129.199168] livepatch: 'test_klp_state2': starting patching transition [ 130.707290] livepatch: 'test_klp_state2': completing patching transition [ 130.707484] test_klp_state2: post_patch_callback: vmlinux [ 130.707485] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 130.707486] livepatch: 'test_klp_state2': patching complete [ 130.728829] % modprobe test_klp_state3 [ 130.730860] livepatch: enabling patch 'test_klp_state3' [ 130.730863] livepatch: 'test_klp_state3': initializing patching transition [ 130.730883] test_klp_state3: pre_patch_callback: vmlinux [ 130.730884] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 130.730886] livepatch: 'test_klp_state3': starting patching transition [ 131.747404] livepatch: 'test_klp_state3': completing patching transition [ 131.747514] test_klp_state3: post_patch_callback: vmlinux [ 131.747516] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 131.747517] livepatch: 'test_klp_state3': patching complete [ 131.751280] % rmmod test_klp_state2 [ 131.830254] % modprobe test_klp_state2 [ 131.831912] livepatch: enabling patch 'test_klp_state2' [ 131.831914] livepatch: 'test_klp_state2': initializing patching transition [ 131.831932] test_klp_state2: pre_patch_callback: vmlinux [ 131.831933] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 131.831934] livepatch: 'test_klp_state2': starting patching transition [ 132.787297] livepatch: 'test_klp_state2': completing patching transition [ 132.787417] test_klp_state2: post_patch_callback: vmlinux [ 132.787418] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 132.787420] livepatch: 'test_klp_state2': patching complete [ 132.849950] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 132.850015] livepatch: 'test_klp_state2': initializing unpatching transition [ 132.850036] test_klp_state2: pre_unpatch_callback: vmlinux [ 132.850037] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 132.850038] livepatch: 'test_klp_state2': starting unpatching transition [ 133.907269] livepatch: 'test_klp_state2': completing unpatching transition [ 133.907403] test_klp_state2: post_unpatch_callback: vmlinux [ 133.907405] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 133.907406] livepatch: 'test_klp_state2': unpatching complete [ 133.960649] % rmmod test_klp_state2 [ 134.007856] % rmmod test_klp_state3 [ 134.074550] ===== TEST: incompatible cumulative livepatches ===== [ 134.077882] % modprobe test_klp_state2 [ 134.079476] livepatch: enabling patch 'test_klp_state2' [ 134.079478] livepatch: 'test_klp_state2': initializing patching transition [ 134.079498] test_klp_state2: pre_patch_callback: vmlinux [ 134.079499] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 134.079501] livepatch: 'test_klp_state2': starting patching transition [ 135.587306] livepatch: 'test_klp_state2': completing patching transition [ 135.587415] test_klp_state2: post_patch_callback: vmlinux [ 135.587417] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 135.587418] livepatch: 'test_klp_state2': patching complete [ 135.606549] % modprobe test_klp_state [ 135.608261] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 135.736937] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 135.736975] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 135.736992] livepatch: 'test_klp_state2': initializing unpatching transition [ 135.737013] test_klp_state2: pre_unpatch_callback: vmlinux [ 135.737014] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 135.737015] livepatch: 'test_klp_state2': starting unpatching transition [ 136.947325] livepatch: 'test_klp_state2': completing unpatching transition [ 136.947481] test_klp_state2: post_unpatch_callback: vmlinux [ 136.947482] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 136.947483] livepatch: 'test_klp_state2': unpatching complete [ 136.948539] % rmmod test_klp_state2 [ 137.041414] livepatch: kernel.ftrace_enabled = 1 [ 137.049296] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 137.051220] livepatch: kernel.ftrace_enabled = 0 [ 137.051281] % modprobe test_klp_livepatch [ 137.052860] livepatch: enabling patch 'test_klp_livepatch' [ 137.052862] livepatch: 'test_klp_livepatch': initializing patching transition [ 137.052885] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 137.052887] livepatch: failed to patch object 'vmlinux' [ 137.052888] livepatch: failed to enable patch 'test_klp_livepatch' [ 137.052889] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 137.052890] livepatch: 'test_klp_livepatch': completing unpatching transition [ 137.052996] livepatch: 'test_klp_livepatch': unpatching complete [ 137.176943] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 137.178976] livepatch: kernel.ftrace_enabled = 1 [ 137.182231] % modprobe test_klp_livepatch [ 137.183760] livepatch: enabling patch 'test_klp_livepatch' [ 137.183762] livepatch: 'test_klp_livepatch': initializing patching transition [ 137.184843] livepatch: 'test_klp_livepatch': starting patching transition [ 138.067403] livepatch: 'test_klp_livepatch': completing patching transition [ 138.067507] livepatch: 'test_klp_livepatch': patching complete [ 138.105610] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 138.106627] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 138.106648] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 138.106672] livepatch: 'test_klp_livepatch': starting unpatching transition [ 139.107365] livepatch: 'test_klp_livepatch': completing unpatching transition [ 139.108879] livepatch: 'test_klp_livepatch': unpatching complete [ 139.116355] % rmmod test_klp_livepatch [ 139.200586] livepatch: kernel.ftrace_enabled = 1 [ 139.208530] ===== TEST: sysfs test ===== [ 139.211756] % modprobe test_klp_livepatch [ 139.213178] livepatch: enabling patch 'test_klp_livepatch' [ 139.213180] livepatch: 'test_klp_livepatch': initializing patching transition [ 139.214331] livepatch: 'test_klp_livepatch': starting patching transition [ 140.867306] livepatch: 'test_klp_livepatch': completing patching transition [ 140.867409] livepatch: 'test_klp_livepatch': patching complete [ 140.953991] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 140.954006] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 140.954028] livepatch: 'test_klp_livepatch': starting unpatching transition [ 141.997333] livepatch: 'test_klp_livepatch': completing unpatching transition [ 141.998940] livepatch: 'test_klp_livepatch': unpatching complete [ 142.064873] % rmmod test_klp_livepatch [ 142.144542] ===== TEST: sysfs test object/patched ===== [ 142.147844] % modprobe test_klp_callbacks_demo [ 142.149314] livepatch: enabling patch 'test_klp_callbacks_demo' [ 142.149316] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 142.149336] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 142.149337] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 143.027295] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 143.027399] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 143.027400] livepatch: 'test_klp_callbacks_demo': patching complete [ 143.071068] % modprobe test_klp_callbacks_mod [ 143.072452] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 143.072454] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 143.072456] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 143.072497] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 143.074775] % rmmod test_klp_callbacks_mod [ 143.076064] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 143.076077] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 143.076079] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 143.076081] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 143.137979] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 143.138015] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 143.138036] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 143.138038] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 144.147343] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 144.147528] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 144.147530] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 144.249115] % rmmod test_klp_callbacks_demo [ 149.652836] livepatch: kernel.ftrace_enabled = 1 [ 149.660651] ===== TEST: basic function patching ===== [ 149.663714] % modprobe test_klp_livepatch [ 149.665324] livepatch: enabling patch 'test_klp_livepatch' [ 149.665326] livepatch: 'test_klp_livepatch': initializing patching transition [ 149.666432] livepatch: 'test_klp_livepatch': starting patching transition [ 151.027254] livepatch: 'test_klp_livepatch': completing patching transition [ 151.027390] livepatch: 'test_klp_livepatch': patching complete [ 151.092898] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 151.092917] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 151.092934] livepatch: 'test_klp_livepatch': starting unpatching transition [ 152.067265] livepatch: 'test_klp_livepatch': completing unpatching transition [ 152.068794] livepatch: 'test_klp_livepatch': unpatching complete [ 152.102901] % rmmod test_klp_livepatch [ 152.175346] ===== TEST: multiple livepatches ===== [ 152.178402] % modprobe test_klp_livepatch [ 152.179854] livepatch: enabling patch 'test_klp_livepatch' [ 152.179857] livepatch: 'test_klp_livepatch': initializing patching transition [ 152.181052] livepatch: 'test_klp_livepatch': starting patching transition [ 153.587227] livepatch: 'test_klp_livepatch': completing patching transition [ 153.587346] livepatch: 'test_klp_livepatch': patching complete [ 153.605914] test_klp_livepatch: this has been live patched [ 153.610106] % modprobe test_klp_atomic_replace replace=0 [ 153.611743] livepatch: enabling patch 'test_klp_atomic_replace' [ 153.611746] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 153.612988] livepatch: 'test_klp_atomic_replace': starting patching transition [ 154.867269] livepatch: 'test_klp_atomic_replace': completing patching transition [ 154.867427] livepatch: 'test_klp_atomic_replace': patching complete [ 154.936390] test_klp_livepatch: this has been live patched [ 154.937249] test_klp_atomic_replace: this has been live patched [ 154.937424] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 154.937443] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 154.937463] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 156.067196] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 156.068608] livepatch: 'test_klp_atomic_replace': unpatching complete [ 156.148189] % rmmod test_klp_atomic_replace [ 156.197593] test_klp_livepatch: this has been live patched [ 156.198534] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 156.198551] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 156.198569] livepatch: 'test_klp_livepatch': starting unpatching transition [ 157.027245] livepatch: 'test_klp_livepatch': completing unpatching transition [ 157.028678] livepatch: 'test_klp_livepatch': unpatching complete [ 157.107307] % rmmod test_klp_livepatch [ 157.196290] ===== TEST: atomic replace livepatch ===== [ 157.199586] % modprobe test_klp_livepatch [ 157.201016] livepatch: enabling patch 'test_klp_livepatch' [ 157.201018] livepatch: 'test_klp_livepatch': initializing patching transition [ 157.202113] livepatch: 'test_klp_livepatch': starting patching transition [ 159.027189] livepatch: 'test_klp_livepatch': completing patching transition [ 159.027295] livepatch: 'test_klp_livepatch': patching complete [ 159.033053] test_klp_livepatch: this has been live patched [ 159.037594] % modprobe test_klp_atomic_replace replace=1 [ 159.039272] livepatch: enabling patch 'test_klp_atomic_replace' [ 159.039274] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 159.040394] livepatch: 'test_klp_atomic_replace': starting patching transition [ 160.627247] livepatch: 'test_klp_atomic_replace': completing patching transition [ 160.628733] livepatch: 'test_klp_atomic_replace': patching complete [ 160.669276] test_klp_atomic_replace: this has been live patched [ 160.670250] % rmmod test_klp_livepatch [ 160.728472] test_klp_atomic_replace: this has been live patched [ 160.728578] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 160.728647] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 160.728675] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 162.067222] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 162.068711] livepatch: 'test_klp_atomic_replace': unpatching complete [ 162.140945] % rmmod test_klp_atomic_replace [ 162.231887] livepatch: kernel.ftrace_enabled = 1 [ 162.239588] ===== TEST: target module before livepatch ===== [ 162.242938] % modprobe test_klp_callbacks_mod [ 162.244287] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 162.247833] % modprobe test_klp_callbacks_demo [ 162.249367] livepatch: enabling patch 'test_klp_callbacks_demo' [ 162.249369] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 162.249388] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 162.249389] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 162.249406] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 163.747295] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 163.747452] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 163.747454] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 163.747456] livepatch: 'test_klp_callbacks_demo': patching complete [ 163.776543] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 163.776563] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 163.776586] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 163.776587] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 163.776589] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 165.027266] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 165.027372] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 165.027374] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 165.027375] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 165.088636] % rmmod test_klp_callbacks_demo [ 165.147720] % rmmod test_klp_callbacks_mod [ 165.148920] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 165.243998] ===== TEST: module_coming notifier ===== [ 165.247169] % modprobe test_klp_callbacks_demo [ 165.248711] livepatch: enabling patch 'test_klp_callbacks_demo' [ 165.248713] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 165.248734] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 165.248735] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 166.707205] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 166.707378] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 166.707380] livepatch: 'test_klp_callbacks_demo': patching complete [ 166.778763] % modprobe test_klp_callbacks_mod [ 166.780198] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 166.780201] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 166.780203] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 166.780245] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 166.780610] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 166.780628] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 166.780649] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 166.780650] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 166.780652] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 168.067171] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 168.067288] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 168.067289] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 168.067291] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 168.092769] % rmmod test_klp_callbacks_demo [ 168.137636] % rmmod test_klp_callbacks_mod [ 168.138733] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 168.214554] ===== TEST: module_going notifier ===== [ 168.217657] % modprobe test_klp_callbacks_mod [ 168.219088] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 168.222668] % modprobe test_klp_callbacks_demo [ 168.224189] livepatch: enabling patch 'test_klp_callbacks_demo' [ 168.224190] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 168.224209] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 168.224210] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 168.224211] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 169.027192] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 169.027294] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 169.027296] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 169.027297] livepatch: 'test_klp_callbacks_demo': patching complete [ 169.039955] % rmmod test_klp_callbacks_mod [ 169.041211] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 169.041225] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 169.041227] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 169.041229] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 169.096825] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 169.096842] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 169.096860] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 169.096861] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 170.067135] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 170.067237] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 170.067239] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 170.106247] % rmmod test_klp_callbacks_demo [ 170.184203] ===== TEST: module_coming and module_going notifiers ===== [ 170.187291] % modprobe test_klp_callbacks_demo [ 170.188838] livepatch: enabling patch 'test_klp_callbacks_demo' [ 170.188840] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 170.188861] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 170.188862] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 171.837198] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 171.837326] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 171.837328] livepatch: 'test_klp_callbacks_demo': patching complete [ 171.921732] % modprobe test_klp_callbacks_mod [ 171.923091] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 171.923094] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 171.923096] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 171.923138] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 171.924441] % rmmod test_klp_callbacks_mod [ 171.925535] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 171.925548] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 171.925550] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 171.925551] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 171.966871] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 171.966889] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 171.966909] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 171.966910] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 173.027199] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 173.027354] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 173.027355] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 173.076841] % rmmod test_klp_callbacks_demo [ 173.144067] ===== TEST: target module not present ===== [ 173.147097] % modprobe test_klp_callbacks_demo [ 173.148676] livepatch: enabling patch 'test_klp_callbacks_demo' [ 173.148678] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 173.148717] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 173.148719] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 174.627151] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 174.627256] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 174.627257] livepatch: 'test_klp_callbacks_demo': patching complete [ 174.675094] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 174.675112] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 174.675133] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 174.675134] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 176.067150] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 176.067252] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 176.067253] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 176.088083] % rmmod test_klp_callbacks_demo [ 176.194636] ===== TEST: pre-patch callback -ENODEV ===== [ 176.197807] % modprobe test_klp_callbacks_mod [ 176.199160] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 176.199520] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 176.201031] livepatch: enabling patch 'test_klp_callbacks_demo' [ 176.201033] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 176.201061] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 176.201062] livepatch: pre-patch callback failed for object 'vmlinux' [ 176.201063] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 176.201064] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 176.201079] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 176.201187] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 176.346872] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 176.347900] % rmmod test_klp_callbacks_mod [ 176.349044] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 176.424402] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 176.427567] % modprobe test_klp_callbacks_demo [ 176.429103] livepatch: enabling patch 'test_klp_callbacks_demo' [ 176.429105] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 176.429125] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 176.429126] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 177.667156] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 177.667260] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 177.667261] livepatch: 'test_klp_callbacks_demo': patching complete [ 177.753119] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 177.754056] % modprobe test_klp_callbacks_mod [ 177.755378] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 177.755381] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 177.755383] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 177.755385] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 177.846782] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 177.846853] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 177.846869] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 177.846891] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 177.846892] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 179.027108] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 179.027212] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 179.027214] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 179.058400] % rmmod test_klp_callbacks_demo [ 179.124598] ===== TEST: multiple target modules ===== [ 179.127765] % modprobe test_klp_callbacks_busy block_transition=N [ 179.129305] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 179.129311] test_klp_callbacks_busy: busymod_work_func enter [ 179.129313] test_klp_callbacks_busy: busymod_work_func exit [ 179.132729] % modprobe test_klp_callbacks_demo [ 179.134243] livepatch: enabling patch 'test_klp_callbacks_demo' [ 179.134247] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 179.134267] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 179.134268] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 179.135680] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 180.947100] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 180.947201] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 180.947203] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 180.947204] livepatch: 'test_klp_callbacks_demo': patching complete [ 180.970719] % modprobe test_klp_callbacks_mod [ 180.972226] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 180.972228] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 180.972230] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 180.972273] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 180.973615] % rmmod test_klp_callbacks_mod [ 180.974736] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 180.974748] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 180.974750] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 180.974751] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 181.046824] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 181.046842] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 181.046860] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 181.046861] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 181.046863] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 181.907102] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 181.908849] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 181.908851] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 181.908853] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 181.955928] % rmmod test_klp_callbacks_demo [ 182.057660] % rmmod test_klp_callbacks_busy [ 182.058777] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 182.134704] ===== TEST: busy target module ===== [ 182.137780] % modprobe test_klp_callbacks_busy block_transition=Y [ 182.139259] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 182.139263] test_klp_callbacks_busy: busymod_work_func enter [ 182.142889] % modprobe test_klp_callbacks_demo [ 182.144362] livepatch: enabling patch 'test_klp_callbacks_demo' [ 182.144364] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 182.144382] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 182.144383] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 182.145742] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 182.150873] % modprobe test_klp_callbacks_mod [ 182.152293] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 182.152296] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 182.152339] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 182.153479] % rmmod test_klp_callbacks_mod [ 182.154578] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 182.154591] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 182.154592] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 182.196952] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 182.196973] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 182.197122] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 184.947083] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 184.948859] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 184.948861] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 184.948862] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 185.020008] % rmmod test_klp_callbacks_demo [ 185.077670] % rmmod test_klp_callbacks_busy [ 185.106398] test_klp_callbacks_busy: busymod_work_func exit [ 185.106407] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 185.184323] ===== TEST: multiple livepatches ===== [ 185.187426] % modprobe test_klp_callbacks_demo [ 185.188999] livepatch: enabling patch 'test_klp_callbacks_demo' [ 185.189001] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 185.189021] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 185.189022] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 186.067143] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 186.067283] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 186.067284] livepatch: 'test_klp_callbacks_demo': patching complete [ 186.109240] % modprobe test_klp_callbacks_demo2 [ 186.110881] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 186.110883] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 186.110904] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 186.110906] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 187.107240] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 187.107352] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 187.107353] livepatch: 'test_klp_callbacks_demo2': patching complete [ 187.129168] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 187.129188] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 187.129208] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 187.129209] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 187.987516] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 187.987618] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 187.987620] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 188.037170] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 188.037188] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 188.037205] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 188.037206] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 189.027062] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 189.027164] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 189.027166] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 189.047265] % rmmod test_klp_callbacks_demo2 [ 189.137664] % rmmod test_klp_callbacks_demo [ 189.224455] ===== TEST: atomic replace ===== [ 189.227586] % modprobe test_klp_callbacks_demo [ 189.229201] livepatch: enabling patch 'test_klp_callbacks_demo' [ 189.229203] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 189.229222] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 189.229224] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 190.067084] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 190.067235] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 190.067237] livepatch: 'test_klp_callbacks_demo': patching complete [ 190.148887] % modprobe test_klp_callbacks_demo2 replace=1 [ 190.150416] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 190.150419] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 190.150439] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 190.150441] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 191.747107] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 191.747218] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 191.747220] livepatch: 'test_klp_callbacks_demo2': patching complete [ 191.778578] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 191.778598] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 191.778619] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 191.778621] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 192.947121] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 192.947227] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 192.947229] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 192.989892] % rmmod test_klp_callbacks_demo2 [ 193.057940] % rmmod test_klp_callbacks_demo [ 193.160197] livepatch: kernel.ftrace_enabled = 1 [ 193.167730] ===== TEST: basic shadow variable API ===== [ 193.170833] % modprobe test_klp_shadow_vars [ 193.172209] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 193.172211] test_klp_shadow_vars: got expected NULL result [ 193.172213] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 193.172214] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 193.172217] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 193.172218] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 193.172220] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 193.172221] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 193.172224] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 193.172225] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 193.172227] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 193.172229] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 193.172231] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 193.172232] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 193.172234] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 193.172236] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 193.172237] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 193.172238] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 193.172239] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 193.172240] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 193.172241] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 193.172243] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 193.172244] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 193.172245] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 193.172246] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 193.172247] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 193.172249] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 193.172251] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 193.172252] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 193.172254] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 193.172255] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 193.172257] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 193.172258] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 193.172260] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 193.172261] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 193.172262] test_klp_shadow_vars: got expected NULL result [ 193.172263] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 193.172265] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 193.172266] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 193.172267] test_klp_shadow_vars: got expected NULL result [ 193.172268] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 193.172269] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 193.172270] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 193.172271] test_klp_shadow_vars: got expected NULL result [ 193.172272] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 193.172274] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 193.172275] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 193.172276] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 193.172277] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 193.172278] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 193.172287] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 193.172288] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 193.172289] test_klp_shadow_vars: got expected NULL result [ 193.172290] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 193.172291] test_klp_shadow_vars: got expected NULL result [ 193.172292] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 193.172293] test_klp_shadow_vars: got expected NULL result [ 193.173588] % rmmod test_klp_shadow_vars [ 193.270211] livepatch: kernel.ftrace_enabled = 1 [ 193.277772] ===== TEST: system state modification ===== [ 193.280982] % modprobe test_klp_state [ 193.282421] livepatch: enabling patch 'test_klp_state' [ 193.282422] livepatch: 'test_klp_state': initializing patching transition [ 193.282443] test_klp_state: pre_patch_callback: vmlinux [ 193.282444] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 193.282445] livepatch: 'test_klp_state': starting patching transition [ 194.627016] livepatch: 'test_klp_state': completing patching transition [ 194.627121] test_klp_state: post_patch_callback: vmlinux [ 194.627122] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 194.627123] livepatch: 'test_klp_state': patching complete [ 194.707923] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 194.707943] livepatch: 'test_klp_state': initializing unpatching transition [ 194.707962] test_klp_state: pre_unpatch_callback: vmlinux [ 194.707963] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 194.707964] livepatch: 'test_klp_state': starting unpatching transition [ 195.667037] livepatch: 'test_klp_state': completing unpatching transition [ 195.667141] test_klp_state: post_unpatch_callback: vmlinux [ 195.667143] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 195.667144] livepatch: 'test_klp_state': unpatching complete [ 195.718014] % rmmod test_klp_state [ 195.794830] ===== TEST: taking over system state modification ===== [ 195.797971] % modprobe test_klp_state [ 195.799572] livepatch: enabling patch 'test_klp_state' [ 195.799574] livepatch: 'test_klp_state': initializing patching transition [ 195.799595] test_klp_state: pre_patch_callback: vmlinux [ 195.799596] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 195.799598] livepatch: 'test_klp_state': starting patching transition [ 196.867056] livepatch: 'test_klp_state': completing patching transition [ 196.867162] test_klp_state: post_patch_callback: vmlinux [ 196.867164] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 196.867165] livepatch: 'test_klp_state': patching complete [ 196.922499] % modprobe test_klp_state2 [ 196.924010] livepatch: enabling patch 'test_klp_state2' [ 196.924012] livepatch: 'test_klp_state2': initializing patching transition [ 196.924032] test_klp_state2: pre_patch_callback: vmlinux [ 196.924033] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 196.924034] livepatch: 'test_klp_state2': starting patching transition [ 198.627070] livepatch: 'test_klp_state2': completing patching transition [ 198.627227] test_klp_state2: post_patch_callback: vmlinux [ 198.627229] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 198.627230] livepatch: 'test_klp_state2': patching complete [ 198.654169] % rmmod test_klp_state [ 198.696775] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 198.696796] livepatch: 'test_klp_state2': initializing unpatching transition [ 198.696818] test_klp_state2: pre_unpatch_callback: vmlinux [ 198.696820] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 198.696821] livepatch: 'test_klp_state2': starting unpatching transition [ 199.667041] livepatch: 'test_klp_state2': completing unpatching transition [ 199.667222] test_klp_state2: post_unpatch_callback: vmlinux [ 199.667223] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 199.667224] livepatch: 'test_klp_state2': unpatching complete [ 199.706641] % rmmod test_klp_state2 [ 199.794709] ===== TEST: compatible cumulative livepatches ===== [ 199.797951] % modprobe test_klp_state2 [ 199.799497] livepatch: enabling patch 'test_klp_state2' [ 199.799500] livepatch: 'test_klp_state2': initializing patching transition [ 199.799521] test_klp_state2: pre_patch_callback: vmlinux [ 199.799522] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 199.799524] livepatch: 'test_klp_state2': starting patching transition [ 200.707033] livepatch: 'test_klp_state2': completing patching transition [ 200.707156] test_klp_state2: post_patch_callback: vmlinux [ 200.707158] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 200.707159] livepatch: 'test_klp_state2': patching complete [ 200.719453] % modprobe test_klp_state3 [ 200.721036] livepatch: enabling patch 'test_klp_state3' [ 200.721040] livepatch: 'test_klp_state3': initializing patching transition [ 200.721063] test_klp_state3: pre_patch_callback: vmlinux [ 200.721064] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 200.721065] livepatch: 'test_klp_state3': starting patching transition [ 201.667030] livepatch: 'test_klp_state3': completing patching transition [ 201.667132] test_klp_state3: post_patch_callback: vmlinux [ 201.667134] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 201.667135] livepatch: 'test_klp_state3': patching complete [ 201.740654] % rmmod test_klp_state2 [ 201.790108] % modprobe test_klp_state2 [ 201.791613] livepatch: enabling patch 'test_klp_state2' [ 201.791616] livepatch: 'test_klp_state2': initializing patching transition [ 201.791636] test_klp_state2: pre_patch_callback: vmlinux [ 201.791637] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 201.791639] livepatch: 'test_klp_state2': starting patching transition [ 202.947001] livepatch: 'test_klp_state2': completing patching transition [ 202.947134] test_klp_state2: post_patch_callback: vmlinux [ 202.947136] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 202.947137] livepatch: 'test_klp_state2': patching complete [ 203.013457] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 203.013476] livepatch: 'test_klp_state2': initializing unpatching transition [ 203.013497] test_klp_state2: pre_unpatch_callback: vmlinux [ 203.013498] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 203.013499] livepatch: 'test_klp_state2': starting unpatching transition [ 204.627021] livepatch: 'test_klp_state2': completing unpatching transition [ 204.627127] test_klp_state2: post_unpatch_callback: vmlinux [ 204.627128] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 204.627130] livepatch: 'test_klp_state2': unpatching complete [ 204.628240] % rmmod test_klp_state2 [ 204.677492] % rmmod test_klp_state3 [ 204.754498] ===== TEST: incompatible cumulative livepatches ===== [ 204.757803] % modprobe test_klp_state2 [ 204.759469] livepatch: enabling patch 'test_klp_state2' [ 204.759471] livepatch: 'test_klp_state2': initializing patching transition [ 204.759509] test_klp_state2: pre_patch_callback: vmlinux [ 204.759511] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 204.759512] livepatch: 'test_klp_state2': starting patching transition [ 205.667054] livepatch: 'test_klp_state2': completing patching transition [ 205.667221] test_klp_state2: post_patch_callback: vmlinux [ 205.667223] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 205.667224] livepatch: 'test_klp_state2': patching complete [ 205.676418] % modprobe test_klp_state [ 205.678021] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 205.796666] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 205.796711] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 205.796727] livepatch: 'test_klp_state2': initializing unpatching transition [ 205.796748] test_klp_state2: pre_unpatch_callback: vmlinux [ 205.796749] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 205.796750] livepatch: 'test_klp_state2': starting unpatching transition [ 206.627024] livepatch: 'test_klp_state2': completing unpatching transition [ 206.627126] test_klp_state2: post_unpatch_callback: vmlinux [ 206.627127] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 206.627128] livepatch: 'test_klp_state2': unpatching complete [ 206.705649] % rmmod test_klp_state2 [ 206.799832] livepatch: kernel.ftrace_enabled = 1 [ 206.807523] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 206.809453] livepatch: kernel.ftrace_enabled = 0 [ 206.809519] % modprobe test_klp_livepatch [ 206.811132] livepatch: enabling patch 'test_klp_livepatch' [ 206.811134] livepatch: 'test_klp_livepatch': initializing patching transition [ 206.811157] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 206.811159] livepatch: failed to patch object 'vmlinux' [ 206.811160] livepatch: failed to enable patch 'test_klp_livepatch' [ 206.811161] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 206.811162] livepatch: 'test_klp_livepatch': completing unpatching transition [ 206.811267] livepatch: 'test_klp_livepatch': unpatching complete [ 206.946752] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 206.948665] livepatch: kernel.ftrace_enabled = 1 [ 206.951864] % modprobe test_klp_livepatch [ 206.953500] livepatch: enabling patch 'test_klp_livepatch' [ 206.953502] livepatch: 'test_klp_livepatch': initializing patching transition [ 206.954621] livepatch: 'test_klp_livepatch': starting patching transition [ 208.147074] livepatch: 'test_klp_livepatch': completing patching transition [ 208.147180] livepatch: 'test_klp_livepatch': patching complete [ 208.181130] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 208.182202] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 208.182223] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 208.182241] livepatch: 'test_klp_livepatch': starting unpatching transition [ 209.106989] livepatch: 'test_klp_livepatch': completing unpatching transition [ 209.108516] livepatch: 'test_klp_livepatch': unpatching complete [ 209.192468] % rmmod test_klp_livepatch [ 209.269412] livepatch: kernel.ftrace_enabled = 1 [ 209.277289] ===== TEST: sysfs test ===== [ 209.280562] % modprobe test_klp_livepatch [ 209.282041] livepatch: enabling patch 'test_klp_livepatch' [ 209.282043] livepatch: 'test_klp_livepatch': initializing patching transition [ 209.283130] livepatch: 'test_klp_livepatch': starting patching transition [ 210.946994] livepatch: 'test_klp_livepatch': completing patching transition [ 210.947096] livepatch: 'test_klp_livepatch': patching complete [ 211.020069] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 211.020084] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 211.020103] livepatch: 'test_klp_livepatch': starting unpatching transition [ 211.906955] livepatch: 'test_klp_livepatch': completing unpatching transition [ 211.908429] livepatch: 'test_klp_livepatch': unpatching complete [ 211.928959] % rmmod test_klp_livepatch [ 212.004690] ===== TEST: sysfs test object/patched ===== [ 212.007954] % modprobe test_klp_callbacks_demo [ 212.009626] livepatch: enabling patch 'test_klp_callbacks_demo' [ 212.009628] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 212.009649] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 212.009650] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 213.106985] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 213.107148] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 213.107150] livepatch: 'test_klp_callbacks_demo': patching complete [ 213.133983] % modprobe test_klp_callbacks_mod [ 213.135432] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 213.135434] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 213.135436] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 213.135478] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 213.137671] % rmmod test_klp_callbacks_mod [ 213.138782] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 213.138796] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 213.138798] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 213.138799] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 213.187620] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 213.187639] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 213.187660] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 213.187661] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 214.956966] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 214.957069] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 214.957070] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 215.004034] % rmmod test_klp_callbacks_demo [ 216.486413] livepatch: kernel.ftrace_enabled = 1 [ 216.494184] ===== TEST: basic function patching ===== [ 216.497478] % modprobe test_klp_livepatch [ 216.499123] livepatch: enabling patch 'test_klp_livepatch' [ 216.499125] livepatch: 'test_klp_livepatch': initializing patching transition [ 216.500232] livepatch: 'test_klp_livepatch': starting patching transition [ 217.906980] livepatch: 'test_klp_livepatch': completing patching transition [ 217.907138] livepatch: 'test_klp_livepatch': patching complete [ 217.927548] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 217.927569] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 217.927590] livepatch: 'test_klp_livepatch': starting unpatching transition [ 218.947043] livepatch: 'test_klp_livepatch': completing unpatching transition [ 218.948644] livepatch: 'test_klp_livepatch': unpatching complete [ 219.038726] % rmmod test_klp_livepatch [ 219.115033] ===== TEST: multiple livepatches ===== [ 219.118186] % modprobe test_klp_livepatch [ 219.119788] livepatch: enabling patch 'test_klp_livepatch' [ 219.119790] livepatch: 'test_klp_livepatch': initializing patching transition [ 219.120986] livepatch: 'test_klp_livepatch': starting patching transition [ 220.866989] livepatch: 'test_klp_livepatch': completing patching transition [ 220.867145] livepatch: 'test_klp_livepatch': patching complete [ 220.952783] test_klp_livepatch: this has been live patched [ 220.957044] % modprobe test_klp_atomic_replace replace=0 [ 220.958580] livepatch: enabling patch 'test_klp_atomic_replace' [ 220.958582] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 220.959660] livepatch: 'test_klp_atomic_replace': starting patching transition [ 221.826984] livepatch: 'test_klp_atomic_replace': completing patching transition [ 221.827087] livepatch: 'test_klp_atomic_replace': patching complete [ 221.877823] test_klp_livepatch: this has been live patched [ 221.878665] test_klp_atomic_replace: this has been live patched [ 221.878801] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 221.878822] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 221.878843] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 222.947011] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 222.948465] livepatch: 'test_klp_atomic_replace': unpatching complete [ 222.989788] % rmmod test_klp_atomic_replace [ 223.047531] test_klp_livepatch: this has been live patched [ 223.048613] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 223.048632] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 223.048654] livepatch: 'test_klp_livepatch': starting unpatching transition [ 223.987012] livepatch: 'test_klp_livepatch': completing unpatching transition [ 223.988534] livepatch: 'test_klp_livepatch': unpatching complete [ 224.059000] % rmmod test_klp_livepatch [ 224.156318] ===== TEST: atomic replace livepatch ===== [ 224.159489] % modprobe test_klp_livepatch [ 224.160923] livepatch: enabling patch 'test_klp_livepatch' [ 224.160926] livepatch: 'test_klp_livepatch': initializing patching transition [ 224.162024] livepatch: 'test_klp_livepatch': starting patching transition [ 225.666965] livepatch: 'test_klp_livepatch': completing patching transition [ 225.667118] livepatch: 'test_klp_livepatch': patching complete [ 225.689716] test_klp_livepatch: this has been live patched [ 225.693937] % modprobe test_klp_atomic_replace replace=1 [ 225.695517] livepatch: enabling patch 'test_klp_atomic_replace' [ 225.695519] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 225.696644] livepatch: 'test_klp_atomic_replace': starting patching transition [ 226.786967] livepatch: 'test_klp_atomic_replace': completing patching transition [ 226.788286] livepatch: 'test_klp_atomic_replace': patching complete [ 226.818010] test_klp_atomic_replace: this has been live patched [ 226.819031] % rmmod test_klp_livepatch [ 226.878235] test_klp_atomic_replace: this has been live patched [ 226.878402] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 226.878421] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 226.878443] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 227.907041] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 227.908601] livepatch: 'test_klp_atomic_replace': unpatching complete [ 227.988889] % rmmod test_klp_atomic_replace [ 228.081616] livepatch: kernel.ftrace_enabled = 1 [ 228.089746] ===== TEST: target module before livepatch ===== [ 228.093012] % modprobe test_klp_callbacks_mod [ 228.094389] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 228.097768] % modprobe test_klp_callbacks_demo [ 228.099261] livepatch: enabling patch 'test_klp_callbacks_demo' [ 228.099263] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 228.099286] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 228.099287] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 228.099289] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 229.027084] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 229.027196] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 229.027198] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 229.027199] livepatch: 'test_klp_callbacks_demo': patching complete [ 229.118464] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 229.118483] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 229.118504] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 229.118505] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 229.118506] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 230.866938] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 230.867117] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 230.867118] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 230.867120] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 230.935471] % rmmod test_klp_callbacks_demo [ 230.997625] % rmmod test_klp_callbacks_mod [ 230.998771] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 231.064190] ===== TEST: module_coming notifier ===== [ 231.067155] % modprobe test_klp_callbacks_demo [ 231.068630] livepatch: enabling patch 'test_klp_callbacks_demo' [ 231.068632] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 231.068652] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 231.068653] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 232.786968] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 232.787122] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 232.787123] livepatch: 'test_klp_callbacks_demo': patching complete [ 232.800046] % modprobe test_klp_callbacks_mod [ 232.801418] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 232.801421] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 232.801423] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 232.801465] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 232.801808] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 232.801826] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 232.801848] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 232.801849] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 232.801850] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 233.906995] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 233.907137] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 233.907139] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 233.907140] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 233.912080] % rmmod test_klp_callbacks_demo [ 233.987482] % rmmod test_klp_callbacks_mod [ 233.988644] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 234.064216] ===== TEST: module_going notifier ===== [ 234.067491] % modprobe test_klp_callbacks_mod [ 234.068784] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 234.072123] % modprobe test_klp_callbacks_demo [ 234.073590] livepatch: enabling patch 'test_klp_callbacks_demo' [ 234.073592] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 234.073611] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 234.073613] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 234.073614] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 234.866962] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 234.867066] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 234.867068] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 234.867069] livepatch: 'test_klp_callbacks_demo': patching complete [ 234.889218] % rmmod test_klp_callbacks_mod [ 234.890290] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 234.890303] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 234.890305] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 234.890307] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 234.936640] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 234.936658] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 234.936677] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 234.936678] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 235.906953] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 235.907059] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 235.907060] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 235.946374] % rmmod test_klp_callbacks_demo [ 236.044816] ===== TEST: module_coming and module_going notifiers ===== [ 236.047961] % modprobe test_klp_callbacks_demo [ 236.049483] livepatch: enabling patch 'test_klp_callbacks_demo' [ 236.049485] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 236.049505] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 236.049506] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 236.947000] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 236.947176] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 236.947178] livepatch: 'test_klp_callbacks_demo': patching complete [ 236.969682] % modprobe test_klp_callbacks_mod [ 236.971078] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 236.971080] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 236.971082] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 236.971123] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 236.972339] % rmmod test_klp_callbacks_mod [ 236.973427] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 236.973439] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 236.973441] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 236.973442] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 237.036714] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 237.036732] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 237.036753] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 237.036754] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 237.906936] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 237.907087] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 237.907088] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 237.945408] % rmmod test_klp_callbacks_demo [ 12.425136] scsi 1:0:0:1084178561: scsi scan: INQUIRY successful with code 0x0 [ 12.425141] scsi 1:0:0:1084178561: scsi scan: INQUIRY pass 2 length 164 [ 12.425154] sd 1:0:0:1084113025: Power-on or device reset occurred [ 12.425157] sd 1:0:0:1084113025: [sdg] tag#1665 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.425159] sd 1:0:0:1084113025: [sdg] tag#1665 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.425161] sd 1:0:0:1084113025: [sdg] tag#1665 Sense Key : Unit Attention [current] [ 12.425163] sd 1:0:0:1084113025: [sdg] tag#1665 Add. Sense: Power on, reset, or bus device reset occurred [ 12.425233] scsi 1:0:0:1084178561: scsi scan: INQUIRY successful with code 0x0 [ 12.425238] scsi 1:0:0:1084178561: Direct-Access IBM 2107900 .102 PQ: 0 ANSI: 6 [ 12.426688] scsi 1:0:0:1084178561: alua: supports implicit TPGS [ 12.426691] scsi 1:0:0:1084178561: alua: device naa.6005076309ffd435000000000000819f port group 0 rel port 243 [ 12.426934] sd 1:0:0:1084178561: sg_alloc: dev=7 [ 12.427059] sd 1:0:0:1084178561: Attached scsi generic sg7 type 0 [ 12.427341] sd 1:0:0:1084113024: scsi scan: device exists on 1:0:0:1084113024 [ 12.427411] sd 1:0:0:1084178561: Power-on or device reset occurred [ 12.427414] sd 1:0:0:1084178561: [sdh] tag#897 Done: ADD_TO_MLQUEUE Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.427417] sd 1:0:0:1084178561: [sdh] tag#897 CDB: Test Unit Ready 00 00 00 00 00 00 [ 12.427419] sd 1:0:0:1084178561: [sdh] tag#897 Sense Key : Unit Attention [current] [ 12.427422] sd 1:0:0:1084178561: [sdh] tag#897 Add. Sense: Power on, reset, or bus device reset occurred [ 12.427766] sd 1:0:0:1084178560: scsi scan: device exists on 1:0:0:1084178560 [ 12.428386] sd 1:0:0:1084113025: scsi scan: device exists on 1:0:0:1084113025 [ 12.428806] sd 1:0:0:1084178561: scsi scan: device exists on 1:0:0:1084178561 [ 12.440305] sd 1:0:0:1084113025: [sdg] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.440309] sd 1:0:0:1084113024: [sde] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.440328] sd 1:0:0:1084178561: [sdh] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.440365] sd 1:0:0:1084178560: [sdf] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB) [ 12.440405] sd 1:0:0:1084113025: [sdg] Write Protect is off [ 12.440406] sd 1:0:0:1084113025: [sdg] Mode Sense: ed 00 00 08 [ 12.440408] sd 1:0:0:1084113024: [sde] Write Protect is off [ 12.440410] sd 1:0:0:1084113024: [sde] Mode Sense: ed 00 00 08 [ 12.440426] sd 1:0:0:1084178561: [sdh] Write Protect is off [ 12.440428] sd 1:0:0:1084178561: [sdh] Mode Sense: ed 00 00 08 [ 12.440451] sd 1:0:0:1084178560: [sdf] Write Protect is off [ 12.440453] sd 1:0:0:1084178560: [sdf] Mode Sense: ed 00 00 08 [ 12.440613] sd 1:0:0:1084113025: [sdg] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.440615] sd 1:0:0:1084113024: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.440625] sd 1:0:0:1084178561: [sdh] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.440627] sd 1:0:0:1084178560: [sdf] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 12.440709] sd 1:0:0:1084113024: [sde] tag#2055 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.440712] sd 1:0:0:1084113024: [sde] tag#2055 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.440714] sd 1:0:0:1084113024: [sde] tag#2055 Sense Key : Illegal Request [current] [ 12.440716] sd 1:0:0:1084113024: [sde] tag#2055 Add. Sense: Invalid field in cdb [ 12.440722] sd 1:0:0:1084178560: [sdf] tag#906 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.440724] sd 1:0:0:1084178560: [sdf] tag#906 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.440727] sd 1:0:0:1084178560: [sdf] tag#906 Sense Key : Illegal Request [current] [ 12.440729] sd 1:0:0:1084178560: [sdf] tag#906 Add. Sense: Invalid field in cdb [ 12.440826] sd 1:0:0:1084113025: [sdg] tag#1677 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.440846] sd 1:0:0:1084113025: [sdg] tag#1677 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.440849] sd 1:0:0:1084113025: [sdg] tag#1677 Sense Key : Illegal Request [current] [ 12.440851] sd 1:0:0:1084113025: [sdg] tag#1677 Add. Sense: Invalid field in cdb [ 12.440855] sd 1:0:0:1084113025: [sdg] Disabling DIF Type 1 protection [ 12.440857] sd 1:0:0:1084113025: [sdg] Enabling DIF Type 0 protection [ 12.440861] sd 1:0:0:1084178561: [sdh] tag#325 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.440874] sd 1:0:0:1084178561: [sdh] tag#325 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 00 0a 00 00 [ 12.440881] sd 1:0:0:1084178561: [sdh] tag#325 Sense Key : Illegal Request [current] [ 12.440882] sd 1:0:0:1084178561: [sdh] tag#325 Add. Sense: Invalid field in cdb [ 12.440886] sd 1:0:0:1084178561: [sdh] Disabling DIF Type 1 protection [ 12.440888] sd 1:0:0:1084178561: [sdh] Enabling DIF Type 0 protection [ 12.443759] sd 1:0:0:1084113024: [sde] tag#1679 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.443780] sd 1:0:0:1084113024: [sde] tag#1679 CDB: Inquiry 12 01 b9 00 04 00 [ 12.443782] sd 1:0:0:1084113024: [sde] tag#1679 Sense Key : Illegal Request [current] [ 12.443785] sd 1:0:0:1084113024: [sde] tag#1679 Add. Sense: Invalid field in cdb [ 12.443797] sd 1:0:0:1084178560: [sdf] tag#327 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.443800] sd 1:0:0:1084178560: [sdf] tag#327 CDB: Inquiry 12 01 b9 00 04 00 [ 12.443802] sd 1:0:0:1084178560: [sdf] tag#327 Sense Key : Illegal Request [current] [ 12.443805] sd 1:0:0:1084178560: [sdf] tag#327 Add. Sense: Invalid field in cdb [ 12.443902] sd 1:0:0:1084113025: [sdg] tag#1682 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.443905] sd 1:0:0:1084113025: [sdg] tag#1682 CDB: Inquiry 12 01 b9 00 04 00 [ 12.443908] sd 1:0:0:1084113025: [sdg] tag#1682 Sense Key : Illegal Request [current] [ 12.443910] sd 1:0:0:1084113025: [sdg] tag#1682 Add. Sense: Invalid field in cdb [ 12.443912] sd 1:0:0:1084178561: [sdh] tag#2057 Done: SUCCESS Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 12.443917] sd 1:0:0:1084178561: [sdh] tag#2057 CDB: Inquiry 12 01 b9 00 04 00 [ 12.443919] sd 1:0:0:1084178561: [sdh] tag#2057 Sense Key : Illegal Request [current] [ 12.443921] sd 1:0:0:1084178561: [sdh] tag#2057 Add. Sense: Invalid field in cdb [ 12.444277] sd 1:0:0:1084178560: [sdf] Attached SCSI disk [ 12.444413] sd 1:0:0:1084113025: [sdg] Attached SCSI disk [ 12.444437] sd 1:0:0:1084178561: [sdh] Attached SCSI disk [ 12.445055] sde: sde1 [ 12.445135] sd 1:0:0:1084113024: [sde] Attached SCSI disk [ 12.455157] mlx5_core 0001:00:00.0 ens8192f0np0: Link up [ 12.754503] mlx5_core 0000:00:00.0 ens8320f0np0: Link up [ 12.870161] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.871810] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.873288] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.879490] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.881609] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 12.883524] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 13.129973] systemd-journald[943]: Compressed data object 621 -> 266 using ZSTD [ 13.130596] systemd-journald[943]: Compressed data object 621 -> 274 using ZSTD [ 14.130283] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 52.526889] crw_info : CRW reports slct=0, oflw=0, chn=0, rsc=B, anc=0, erc=0, rsid=0 [ 64.832872] systemd-journald[943]: Compressed data object 533 -> 400 using ZSTD [ 64.919285] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 64.928008] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 65.045916] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 65.046557] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 65.206974] systemd-journald[943]: Successfully sent stream file descriptor to service manager. [ 84.040569] livepatch: kernel.ftrace_enabled = 1 [ 84.047983] ===== TEST: basic function patching ===== [ 84.052146] % modprobe test_klp_livepatch [ 84.054139] test_klp_livepatch: tainting kernel with TAINT_LIVEPATCH [ 84.054277] livepatch: enabling patch 'test_klp_livepatch' [ 84.054279] livepatch: 'test_klp_livepatch': initializing patching transition [ 84.055514] livepatch: 'test_klp_livepatch': starting patching transition [ 84.867407] livepatch: 'test_klp_livepatch': completing patching transition [ 84.867542] livepatch: 'test_klp_livepatch': patching complete [ 84.872840] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 84.872891] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 84.872925] livepatch: 'test_klp_livepatch': starting unpatching transition [ 85.987407] livepatch: 'test_klp_livepatch': completing unpatching transition [ 85.989034] livepatch: 'test_klp_livepatch': unpatching complete [ 86.084797] % rmmod test_klp_livepatch [ 86.153886] ===== TEST: multiple livepatches ===== [ 86.157188] % modprobe test_klp_livepatch [ 86.158657] livepatch: enabling patch 'test_klp_livepatch' [ 86.158659] livepatch: 'test_klp_livepatch': initializing patching transition [ 86.159793] livepatch: 'test_klp_livepatch': starting patching transition [ 87.027437] livepatch: 'test_klp_livepatch': completing patching transition [ 87.027546] livepatch: 'test_klp_livepatch': patching complete [ 87.078385] test_klp_livepatch: this has been live patched [ 87.083290] % modprobe test_klp_atomic_replace replace=0 [ 87.085500] livepatch: enabling patch 'test_klp_atomic_replace' [ 87.085502] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 87.086685] livepatch: 'test_klp_atomic_replace': starting patching transition [ 87.907412] livepatch: 'test_klp_atomic_replace': completing patching transition [ 87.907555] livepatch: 'test_klp_atomic_replace': patching complete [ 88.004547] test_klp_livepatch: this has been live patched [ 88.005509] test_klp_atomic_replace: this has been live patched [ 88.005634] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 88.005721] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 88.005740] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 88.947422] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 88.948800] livepatch: 'test_klp_atomic_replace': unpatching complete [ 89.016537] % rmmod test_klp_atomic_replace [ 89.097952] test_klp_livepatch: this has been live patched [ 89.099036] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 89.099056] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 89.099079] livepatch: 'test_klp_livepatch': starting unpatching transition [ 89.907443] livepatch: 'test_klp_livepatch': completing unpatching transition [ 89.908927] livepatch: 'test_klp_livepatch': unpatching complete [ 90.008993] % rmmod test_klp_livepatch [ 90.075281] ===== TEST: atomic replace livepatch ===== [ 90.078563] % modprobe test_klp_livepatch [ 90.080025] livepatch: enabling patch 'test_klp_livepatch' [ 90.080027] livepatch: 'test_klp_livepatch': initializing patching transition [ 90.081063] livepatch: 'test_klp_livepatch': starting patching transition [ 91.667362] livepatch: 'test_klp_livepatch': completing patching transition [ 91.667466] livepatch: 'test_klp_livepatch': patching complete [ 91.711116] test_klp_livepatch: this has been live patched [ 91.715609] % modprobe test_klp_atomic_replace replace=1 [ 91.717349] livepatch: enabling patch 'test_klp_atomic_replace' [ 91.717350] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 91.718440] livepatch: 'test_klp_atomic_replace': starting patching transition [ 93.027449] livepatch: 'test_klp_atomic_replace': completing patching transition [ 93.028821] livepatch: 'test_klp_atomic_replace': patching complete [ 93.044211] test_klp_atomic_replace: this has been live patched [ 93.045414] % rmmod test_klp_livepatch [ 93.138826] test_klp_atomic_replace: this has been live patched [ 93.138945] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 93.139013] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 93.139039] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 93.987388] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 93.988892] livepatch: 'test_klp_atomic_replace': unpatching complete [ 94.048696] % rmmod test_klp_atomic_replace [ 94.131346] livepatch: kernel.ftrace_enabled = 1 [ 94.138074] ===== TEST: target module before livepatch ===== [ 94.141712] % modprobe test_klp_callbacks_mod [ 94.143390] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 94.147450] % modprobe test_klp_callbacks_demo [ 94.149518] livepatch: enabling patch 'test_klp_callbacks_demo' [ 94.149520] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 94.149584] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 94.149585] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 94.149586] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 95.827310] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 95.827414] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 95.827416] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 95.827417] livepatch: 'test_klp_callbacks_demo': patching complete [ 95.880751] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 95.880770] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 95.880792] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 95.880793] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 95.880795] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 96.947362] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 96.947467] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 96.947468] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 96.947470] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 96.991491] % rmmod test_klp_callbacks_demo [ 97.047939] % rmmod test_klp_callbacks_mod [ 97.049129] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 97.123448] ===== TEST: module_coming notifier ===== [ 97.126706] % modprobe test_klp_callbacks_demo [ 97.128201] livepatch: enabling patch 'test_klp_callbacks_demo' [ 97.128202] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 97.128221] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 97.128222] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 97.907366] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 97.907523] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 97.907524] livepatch: 'test_klp_callbacks_demo': patching complete [ 97.947504] % modprobe test_klp_callbacks_mod [ 97.948836] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 97.948839] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 97.948841] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 97.948883] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 97.949244] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 97.949263] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 97.949283] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 97.949284] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 97.949285] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 99.117355] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 99.117458] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 99.117460] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 99.117461] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 99.160962] % rmmod test_klp_callbacks_demo [ 99.207962] % rmmod test_klp_callbacks_mod [ 99.209122] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 99.283107] ===== TEST: module_going notifier ===== [ 99.286635] % modprobe test_klp_callbacks_mod [ 99.288047] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 99.291742] % modprobe test_klp_callbacks_demo [ 99.293440] livepatch: enabling patch 'test_klp_callbacks_demo' [ 99.293441] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 99.293462] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 99.293463] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 99.293465] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 101.027350] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 101.027455] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 101.027456] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 101.027458] livepatch: 'test_klp_callbacks_demo': patching complete [ 101.126745] % rmmod test_klp_callbacks_mod [ 101.127848] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 101.127863] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 101.127865] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 101.127866] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 101.187049] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 101.187066] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 101.187085] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 101.187086] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 102.067340] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 102.067461] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 102.067463] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 102.096546] % rmmod test_klp_callbacks_demo [ 102.183243] ===== TEST: module_coming and module_going notifiers ===== [ 102.186391] % modprobe test_klp_callbacks_demo [ 102.187856] livepatch: enabling patch 'test_klp_callbacks_demo' [ 102.187858] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 102.187879] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 102.187881] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 103.827367] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 103.827510] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 103.827511] livepatch: 'test_klp_callbacks_demo': patching complete [ 103.920248] % modprobe test_klp_callbacks_mod [ 103.921535] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 103.921537] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 103.921539] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 103.921581] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 103.922691] % rmmod test_klp_callbacks_mod [ 103.923756] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 103.923786] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 103.923788] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 103.923789] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 103.987019] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 103.987036] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 103.987057] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 103.987058] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 105.027318] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 105.027425] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 105.027426] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 105.096960] % rmmod test_klp_callbacks_demo [ 105.193366] ===== TEST: target module not present ===== [ 105.196426] % modprobe test_klp_callbacks_demo [ 105.197920] livepatch: enabling patch 'test_klp_callbacks_demo' [ 105.197923] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 105.197944] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 105.197945] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 106.957298] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 106.957421] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 106.957422] livepatch: 'test_klp_callbacks_demo': patching complete [ 107.027668] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 107.027687] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 107.027708] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 107.027709] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 108.067334] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 108.067440] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 108.067441] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 108.137719] % rmmod test_klp_callbacks_demo [ 108.213123] ===== TEST: pre-patch callback -ENODEV ===== [ 108.216268] % modprobe test_klp_callbacks_mod [ 108.217645] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 108.218019] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 108.219501] livepatch: enabling patch 'test_klp_callbacks_demo' [ 108.219503] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 108.219523] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 108.219524] livepatch: pre-patch callback failed for object 'vmlinux' [ 108.219524] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 108.219526] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 108.219527] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 108.219633] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 108.366951] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 108.367826] % rmmod test_klp_callbacks_mod [ 108.368966] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 108.463160] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 108.466160] % modprobe test_klp_callbacks_demo [ 108.467614] livepatch: enabling patch 'test_klp_callbacks_demo' [ 108.467616] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 108.467638] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 108.467639] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 109.667362] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 109.667472] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 109.667473] livepatch: 'test_klp_callbacks_demo': patching complete [ 109.689019] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 109.689979] % modprobe test_klp_callbacks_mod [ 109.691291] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 109.691294] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 109.691296] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 109.691297] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 109.837006] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 109.837051] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 109.837066] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 109.837088] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 109.837089] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 111.027394] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 111.027554] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 111.027555] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 111.048716] % rmmod test_klp_callbacks_demo [ 111.124777] ===== TEST: multiple target modules ===== [ 111.128696] % modprobe test_klp_callbacks_busy block_transition=N [ 111.130780] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 111.130784] test_klp_callbacks_busy: busymod_work_func enter [ 111.130786] test_klp_callbacks_busy: busymod_work_func exit [ 111.134478] % modprobe test_klp_callbacks_demo [ 111.135984] livepatch: enabling patch 'test_klp_callbacks_demo' [ 111.135986] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 111.136005] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 111.136006] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 111.137437] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 111.987405] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 111.987513] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 111.987515] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 111.987516] livepatch: 'test_klp_callbacks_demo': patching complete [ 112.058064] % modprobe test_klp_callbacks_mod [ 112.059514] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 112.059516] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 112.059518] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 112.059560] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 112.060788] % rmmod test_klp_callbacks_mod [ 112.061910] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 112.061925] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 112.061927] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 112.061928] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 112.137104] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 112.137122] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 112.137143] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 112.137144] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 112.137146] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 113.027375] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 113.029229] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 113.029230] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 113.029232] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 113.046037] % rmmod test_klp_callbacks_demo [ 113.117945] % rmmod test_klp_callbacks_busy [ 113.119077] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 113.184611] ===== TEST: busy target module ===== [ 113.187764] % modprobe test_klp_callbacks_busy block_transition=Y [ 113.189352] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 113.189356] test_klp_callbacks_busy: busymod_work_func enter [ 113.192845] % modprobe test_klp_callbacks_demo [ 113.194361] livepatch: enabling patch 'test_klp_callbacks_demo' [ 113.194363] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 113.194384] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 113.194385] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 113.195818] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 113.201297] % modprobe test_klp_callbacks_mod [ 113.202625] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 113.202627] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 113.202719] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 113.203890] % rmmod test_klp_callbacks_mod [ 113.204951] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 113.204963] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 113.204964] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 113.267080] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 113.267098] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 113.267246] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 115.907346] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 115.909130] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 115.909132] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 115.909133] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 115.989675] % rmmod test_klp_callbacks_demo [ 116.047878] % rmmod test_klp_callbacks_busy [ 116.066667] test_klp_callbacks_busy: busymod_work_func exit [ 116.066674] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 116.194426] ===== TEST: multiple livepatches ===== [ 116.197597] % modprobe test_klp_callbacks_demo [ 116.199116] livepatch: enabling patch 'test_klp_callbacks_demo' [ 116.199118] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 116.199139] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 116.199140] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 117.667375] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 117.667525] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 117.667527] livepatch: 'test_klp_callbacks_demo': patching complete [ 117.729276] % modprobe test_klp_callbacks_demo2 [ 117.731386] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 117.731388] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 117.731409] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 117.731410] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 118.707443] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 118.707552] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 118.707553] livepatch: 'test_klp_callbacks_demo2': patching complete [ 118.749944] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 118.749964] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 118.749986] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 118.749987] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 119.907371] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 119.907541] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 119.907543] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 119.960612] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 119.960630] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 119.960649] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 119.960650] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 120.867332] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 120.867435] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 120.867436] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 120.869780] % rmmod test_klp_callbacks_demo2 [ 120.917849] % rmmod test_klp_callbacks_demo [ 120.984589] ===== TEST: atomic replace ===== [ 120.987657] % modprobe test_klp_callbacks_demo [ 120.989209] livepatch: enabling patch 'test_klp_callbacks_demo' [ 120.989211] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 120.989232] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 120.989233] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 121.907296] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 121.907399] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 121.907401] livepatch: 'test_klp_callbacks_demo': patching complete [ 122.010261] % modprobe test_klp_callbacks_demo2 replace=1 [ 122.011745] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 122.011747] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 122.011767] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 122.011768] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 122.947337] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 122.947446] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 122.947448] livepatch: 'test_klp_callbacks_demo2': patching complete [ 123.030617] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 123.030637] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 123.030658] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 123.030659] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 123.907269] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 123.907424] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 123.907426] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 123.939784] % rmmod test_klp_callbacks_demo2 [ 123.987825] % rmmod test_klp_callbacks_demo [ 124.090148] livepatch: kernel.ftrace_enabled = 1 [ 124.097727] ===== TEST: basic shadow variable API ===== [ 124.101462] % modprobe test_klp_shadow_vars [ 124.103146] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 124.103148] test_klp_shadow_vars: got expected NULL result [ 124.103150] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 124.103151] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 124.103155] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 124.103156] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 124.103158] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 124.103160] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 124.103162] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 124.103163] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 124.103165] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 124.103167] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 124.103169] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 124.103170] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 124.103173] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 124.103174] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 124.103175] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 124.103176] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 124.103177] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 124.103179] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 124.103180] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 124.103181] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 124.103182] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 124.103184] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 124.103185] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 124.103186] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 124.103187] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 124.103189] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 124.103191] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 124.103193] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 124.103194] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 124.103196] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 124.103197] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 124.103199] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 124.103200] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 124.103201] test_klp_shadow_vars: got expected NULL result [ 124.103202] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 124.103204] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 124.103205] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 124.103206] test_klp_shadow_vars: got expected NULL result [ 124.103207] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 124.103208] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 124.103209] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 124.103211] test_klp_shadow_vars: got expected NULL result [ 124.103212] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 124.103213] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 124.103214] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 124.103215] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 124.103216] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 124.103218] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 124.103231] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 124.103232] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 124.103233] test_klp_shadow_vars: got expected NULL result [ 124.103234] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 124.103235] test_klp_shadow_vars: got expected NULL result [ 124.103236] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 124.103238] test_klp_shadow_vars: got expected NULL result [ 124.104546] % rmmod test_klp_shadow_vars [ 124.201338] livepatch: kernel.ftrace_enabled = 1 [ 124.208997] ===== TEST: system state modification ===== [ 124.212733] % modprobe test_klp_state [ 124.214788] livepatch: enabling patch 'test_klp_state' [ 124.214790] livepatch: 'test_klp_state': initializing patching transition [ 124.214811] test_klp_state: pre_patch_callback: vmlinux [ 124.214812] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 124.214814] livepatch: 'test_klp_state': starting patching transition [ 125.107324] livepatch: 'test_klp_state': completing patching transition [ 125.107502] test_klp_state: post_patch_callback: vmlinux [ 125.107504] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 125.107505] livepatch: 'test_klp_state': patching complete [ 125.132083] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 125.132120] livepatch: 'test_klp_state': initializing unpatching transition [ 125.132141] test_klp_state: pre_unpatch_callback: vmlinux [ 125.132142] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 125.132143] livepatch: 'test_klp_state': starting unpatching transition [ 125.987299] livepatch: 'test_klp_state': completing unpatching transition [ 125.987400] test_klp_state: post_unpatch_callback: vmlinux [ 125.987401] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 125.987402] livepatch: 'test_klp_state': unpatching complete [ 126.040767] % rmmod test_klp_state [ 126.104509] ===== TEST: taking over system state modification ===== [ 126.107689] % modprobe test_klp_state [ 126.109150] livepatch: enabling patch 'test_klp_state' [ 126.109152] livepatch: 'test_klp_state': initializing patching transition [ 126.109173] test_klp_state: pre_patch_callback: vmlinux [ 126.109174] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 126.109176] livepatch: 'test_klp_state': starting patching transition [ 127.107325] livepatch: 'test_klp_state': completing patching transition [ 127.107431] test_klp_state: post_patch_callback: vmlinux [ 127.107432] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 127.107433] livepatch: 'test_klp_state': patching complete [ 127.131647] % modprobe test_klp_state2 [ 127.133754] livepatch: enabling patch 'test_klp_state2' [ 127.133756] livepatch: 'test_klp_state2': initializing patching transition [ 127.133777] test_klp_state2: pre_patch_callback: vmlinux [ 127.133778] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 127.133779] livepatch: 'test_klp_state2': starting patching transition [ 127.987333] livepatch: 'test_klp_state2': completing patching transition [ 127.987456] test_klp_state2: post_patch_callback: vmlinux [ 127.987457] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 127.987458] livepatch: 'test_klp_state2': patching complete [ 128.051214] % rmmod test_klp_state [ 128.117089] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 128.117108] livepatch: 'test_klp_state2': initializing unpatching transition [ 128.117128] test_klp_state2: pre_unpatch_callback: vmlinux [ 128.117129] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 128.117131] livepatch: 'test_klp_state2': starting unpatching transition [ 129.027341] livepatch: 'test_klp_state2': completing unpatching transition [ 129.027447] test_klp_state2: post_unpatch_callback: vmlinux [ 129.027449] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 129.027451] livepatch: 'test_klp_state2': unpatching complete [ 129.127118] % rmmod test_klp_state2 [ 129.194469] ===== TEST: compatible cumulative livepatches ===== [ 129.197663] % modprobe test_klp_state2 [ 129.199144] livepatch: enabling patch 'test_klp_state2' [ 129.199146] livepatch: 'test_klp_state2': initializing patching transition [ 129.199166] test_klp_state2: pre_patch_callback: vmlinux [ 129.199167] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 129.199168] livepatch: 'test_klp_state2': starting patching transition [ 130.707290] livepatch: 'test_klp_state2': completing patching transition [ 130.707484] test_klp_state2: post_patch_callback: vmlinux [ 130.707485] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 130.707486] livepatch: 'test_klp_state2': patching complete [ 130.728829] % modprobe test_klp_state3 [ 130.730860] livepatch: enabling patch 'test_klp_state3' [ 130.730863] livepatch: 'test_klp_state3': initializing patching transition [ 130.730883] test_klp_state3: pre_patch_callback: vmlinux [ 130.730884] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 130.730886] livepatch: 'test_klp_state3': starting patching transition [ 131.747404] livepatch: 'test_klp_state3': completing patching transition [ 131.747514] test_klp_state3: post_patch_callback: vmlinux [ 131.747516] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 131.747517] livepatch: 'test_klp_state3': patching complete [ 131.751280] % rmmod test_klp_state2 [ 131.830254] % modprobe test_klp_state2 [ 131.831912] livepatch: enabling patch 'test_klp_state2' [ 131.831914] livepatch: 'test_klp_state2': initializing patching transition [ 131.831932] test_klp_state2: pre_patch_callback: vmlinux [ 131.831933] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 131.831934] livepatch: 'test_klp_state2': starting patching transition [ 132.787297] livepatch: 'test_klp_state2': completing patching transition [ 132.787417] test_klp_state2: post_patch_callback: vmlinux [ 132.787418] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 132.787420] livepatch: 'test_klp_state2': patching complete [ 132.849950] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 132.850015] livepatch: 'test_klp_state2': initializing unpatching transition [ 132.850036] test_klp_state2: pre_unpatch_callback: vmlinux [ 132.850037] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 132.850038] livepatch: 'test_klp_state2': starting unpatching transition [ 133.907269] livepatch: 'test_klp_state2': completing unpatching transition [ 133.907403] test_klp_state2: post_unpatch_callback: vmlinux [ 133.907405] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 133.907406] livepatch: 'test_klp_state2': unpatching complete [ 133.960649] % rmmod test_klp_state2 [ 134.007856] % rmmod test_klp_state3 [ 134.074550] ===== TEST: incompatible cumulative livepatches ===== [ 134.077882] % modprobe test_klp_state2 [ 134.079476] livepatch: enabling patch 'test_klp_state2' [ 134.079478] livepatch: 'test_klp_state2': initializing patching transition [ 134.079498] test_klp_state2: pre_patch_callback: vmlinux [ 134.079499] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 134.079501] livepatch: 'test_klp_state2': starting patching transition [ 135.587306] livepatch: 'test_klp_state2': completing patching transition [ 135.587415] test_klp_state2: post_patch_callback: vmlinux [ 135.587417] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 135.587418] livepatch: 'test_klp_state2': patching complete [ 135.606549] % modprobe test_klp_state [ 135.608261] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 135.736937] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 135.736975] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 135.736992] livepatch: 'test_klp_state2': initializing unpatching transition [ 135.737013] test_klp_state2: pre_unpatch_callback: vmlinux [ 135.737014] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 135.737015] livepatch: 'test_klp_state2': starting unpatching transition [ 136.947325] livepatch: 'test_klp_state2': completing unpatching transition [ 136.947481] test_klp_state2: post_unpatch_callback: vmlinux [ 136.947482] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 136.947483] livepatch: 'test_klp_state2': unpatching complete [ 136.948539] % rmmod test_klp_state2 [ 137.041414] livepatch: kernel.ftrace_enabled = 1 [ 137.049296] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 137.051220] livepatch: kernel.ftrace_enabled = 0 [ 137.051281] % modprobe test_klp_livepatch [ 137.052860] livepatch: enabling patch 'test_klp_livepatch' [ 137.052862] livepatch: 'test_klp_livepatch': initializing patching transition [ 137.052885] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 137.052887] livepatch: failed to patch object 'vmlinux' [ 137.052888] livepatch: failed to enable patch 'test_klp_livepatch' [ 137.052889] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 137.052890] livepatch: 'test_klp_livepatch': completing unpatching transition [ 137.052996] livepatch: 'test_klp_livepatch': unpatching complete [ 137.176943] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 137.178976] livepatch: kernel.ftrace_enabled = 1 [ 137.182231] % modprobe test_klp_livepatch [ 137.183760] livepatch: enabling patch 'test_klp_livepatch' [ 137.183762] livepatch: 'test_klp_livepatch': initializing patching transition [ 137.184843] livepatch: 'test_klp_livepatch': starting patching transition [ 138.067403] livepatch: 'test_klp_livepatch': completing patching transition [ 138.067507] livepatch: 'test_klp_livepatch': patching complete [ 138.105610] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 138.106627] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 138.106648] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 138.106672] livepatch: 'test_klp_livepatch': starting unpatching transition [ 139.107365] livepatch: 'test_klp_livepatch': completing unpatching transition [ 139.108879] livepatch: 'test_klp_livepatch': unpatching complete [ 139.116355] % rmmod test_klp_livepatch [ 139.200586] livepatch: kernel.ftrace_enabled = 1 [ 139.208530] ===== TEST: sysfs test ===== [ 139.211756] % modprobe test_klp_livepatch [ 139.213178] livepatch: enabling patch 'test_klp_livepatch' [ 139.213180] livepatch: 'test_klp_livepatch': initializing patching transition [ 139.214331] livepatch: 'test_klp_livepatch': starting patching transition [ 140.867306] livepatch: 'test_klp_livepatch': completing patching transition [ 140.867409] livepatch: 'test_klp_livepatch': patching complete [ 140.953991] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 140.954006] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 140.954028] livepatch: 'test_klp_livepatch': starting unpatching transition [ 141.997333] livepatch: 'test_klp_livepatch': completing unpatching transition [ 141.998940] livepatch: 'test_klp_livepatch': unpatching complete [ 142.064873] % rmmod test_klp_livepatch [ 142.144542] ===== TEST: sysfs test object/patched ===== [ 142.147844] % modprobe test_klp_callbacks_demo [ 142.149314] livepatch: enabling patch 'test_klp_callbacks_demo' [ 142.149316] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 142.149336] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 142.149337] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 143.027295] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 143.027399] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 143.027400] livepatch: 'test_klp_callbacks_demo': patching complete [ 143.071068] % modprobe test_klp_callbacks_mod [ 143.072452] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 143.072454] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 143.072456] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 143.072497] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 143.074775] % rmmod test_klp_callbacks_mod [ 143.076064] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 143.076077] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 143.076079] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 143.076081] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 143.137979] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 143.138015] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 143.138036] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 143.138038] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 144.147343] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 144.147528] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 144.147530] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 144.249115] % rmmod test_klp_callbacks_demo [ 149.652836] livepatch: kernel.ftrace_enabled = 1 [ 149.660651] ===== TEST: basic function patching ===== [ 149.663714] % modprobe test_klp_livepatch [ 149.665324] livepatch: enabling patch 'test_klp_livepatch' [ 149.665326] livepatch: 'test_klp_livepatch': initializing patching transition [ 149.666432] livepatch: 'test_klp_livepatch': starting patching transition [ 151.027254] livepatch: 'test_klp_livepatch': completing patching transition [ 151.027390] livepatch: 'test_klp_livepatch': patching complete [ 151.092898] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 151.092917] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 151.092934] livepatch: 'test_klp_livepatch': starting unpatching transition [ 152.067265] livepatch: 'test_klp_livepatch': completing unpatching transition [ 152.068794] livepatch: 'test_klp_livepatch': unpatching complete [ 152.102901] % rmmod test_klp_livepatch [ 152.175346] ===== TEST: multiple livepatches ===== [ 152.178402] % modprobe test_klp_livepatch [ 152.179854] livepatch: enabling patch 'test_klp_livepatch' [ 152.179857] livepatch: 'test_klp_livepatch': initializing patching transition [ 152.181052] livepatch: 'test_klp_livepatch': starting patching transition [ 153.587227] livepatch: 'test_klp_livepatch': completing patching transition [ 153.587346] livepatch: 'test_klp_livepatch': patching complete [ 153.605914] test_klp_livepatch: this has been live patched [ 153.610106] % modprobe test_klp_atomic_replace replace=0 [ 153.611743] livepatch: enabling patch 'test_klp_atomic_replace' [ 153.611746] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 153.612988] livepatch: 'test_klp_atomic_replace': starting patching transition [ 154.867269] livepatch: 'test_klp_atomic_replace': completing patching transition [ 154.867427] livepatch: 'test_klp_atomic_replace': patching complete [ 154.936390] test_klp_livepatch: this has been live patched [ 154.937249] test_klp_atomic_replace: this has been live patched [ 154.937424] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 154.937443] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 154.937463] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 156.067196] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 156.068608] livepatch: 'test_klp_atomic_replace': unpatching complete [ 156.148189] % rmmod test_klp_atomic_replace [ 156.197593] test_klp_livepatch: this has been live patched [ 156.198534] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 156.198551] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 156.198569] livepatch: 'test_klp_livepatch': starting unpatching transition [ 157.027245] livepatch: 'test_klp_livepatch': completing unpatching transition [ 157.028678] livepatch: 'test_klp_livepatch': unpatching complete [ 157.107307] % rmmod test_klp_livepatch [ 157.196290] ===== TEST: atomic replace livepatch ===== [ 157.199586] % modprobe test_klp_livepatch [ 157.201016] livepatch: enabling patch 'test_klp_livepatch' [ 157.201018] livepatch: 'test_klp_livepatch': initializing patching transition [ 157.202113] livepatch: 'test_klp_livepatch': starting patching transition [ 159.027189] livepatch: 'test_klp_livepatch': completing patching transition [ 159.027295] livepatch: 'test_klp_livepatch': patching complete [ 159.033053] test_klp_livepatch: this has been live patched [ 159.037594] % modprobe test_klp_atomic_replace replace=1 [ 159.039272] livepatch: enabling patch 'test_klp_atomic_replace' [ 159.039274] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 159.040394] livepatch: 'test_klp_atomic_replace': starting patching transition [ 160.627247] livepatch: 'test_klp_atomic_replace': completing patching transition [ 160.628733] livepatch: 'test_klp_atomic_replace': patching complete [ 160.669276] test_klp_atomic_replace: this has been live patched [ 160.670250] % rmmod test_klp_livepatch [ 160.728472] test_klp_atomic_replace: this has been live patched [ 160.728578] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 160.728647] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 160.728675] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 162.067222] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 162.068711] livepatch: 'test_klp_atomic_replace': unpatching complete [ 162.140945] % rmmod test_klp_atomic_replace [ 162.231887] livepatch: kernel.ftrace_enabled = 1 [ 162.239588] ===== TEST: target module before livepatch ===== [ 162.242938] % modprobe test_klp_callbacks_mod [ 162.244287] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 162.247833] % modprobe test_klp_callbacks_demo [ 162.249367] livepatch: enabling patch 'test_klp_callbacks_demo' [ 162.249369] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 162.249388] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 162.249389] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 162.249406] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 163.747295] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 163.747452] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 163.747454] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 163.747456] livepatch: 'test_klp_callbacks_demo': patching complete [ 163.776543] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 163.776563] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 163.776586] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 163.776587] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 163.776589] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 165.027266] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 165.027372] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 165.027374] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 165.027375] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 165.088636] % rmmod test_klp_callbacks_demo [ 165.147720] % rmmod test_klp_callbacks_mod [ 165.148920] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 165.243998] ===== TEST: module_coming notifier ===== [ 165.247169] % modprobe test_klp_callbacks_demo [ 165.248711] livepatch: enabling patch 'test_klp_callbacks_demo' [ 165.248713] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 165.248734] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 165.248735] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 166.707205] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 166.707378] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 166.707380] livepatch: 'test_klp_callbacks_demo': patching complete [ 166.778763] % modprobe test_klp_callbacks_mod [ 166.780198] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 166.780201] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 166.780203] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 166.780245] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 166.780610] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 166.780628] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 166.780649] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 166.780650] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 166.780652] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 168.067171] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 168.067288] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 168.067289] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 168.067291] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 168.092769] % rmmod test_klp_callbacks_demo [ 168.137636] % rmmod test_klp_callbacks_mod [ 168.138733] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 168.214554] ===== TEST: module_going notifier ===== [ 168.217657] % modprobe test_klp_callbacks_mod [ 168.219088] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 168.222668] % modprobe test_klp_callbacks_demo [ 168.224189] livepatch: enabling patch 'test_klp_callbacks_demo' [ 168.224190] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 168.224209] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 168.224210] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 168.224211] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 169.027192] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 169.027294] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 169.027296] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 169.027297] livepatch: 'test_klp_callbacks_demo': patching complete [ 169.039955] % rmmod test_klp_callbacks_mod [ 169.041211] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 169.041225] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 169.041227] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 169.041229] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 169.096825] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 169.096842] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 169.096860] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 169.096861] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 170.067135] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 170.067237] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 170.067239] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 170.106247] % rmmod test_klp_callbacks_demo [ 170.184203] ===== TEST: module_coming and module_going notifiers ===== [ 170.187291] % modprobe test_klp_callbacks_demo [ 170.188838] livepatch: enabling patch 'test_klp_callbacks_demo' [ 170.188840] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 170.188861] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 170.188862] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 171.837198] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 171.837326] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 171.837328] livepatch: 'test_klp_callbacks_demo': patching complete [ 171.921732] % modprobe test_klp_callbacks_mod [ 171.923091] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 171.923094] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 171.923096] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 171.923138] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 171.924441] % rmmod test_klp_callbacks_mod [ 171.925535] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 171.925548] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 171.925550] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 171.925551] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 171.966871] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 171.966889] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 171.966909] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 171.966910] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 173.027199] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 173.027354] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 173.027355] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 173.076841] % rmmod test_klp_callbacks_demo [ 173.144067] ===== TEST: target module not present ===== [ 173.147097] % modprobe test_klp_callbacks_demo [ 173.148676] livepatch: enabling patch 'test_klp_callbacks_demo' [ 173.148678] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 173.148717] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 173.148719] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 174.627151] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 174.627256] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 174.627257] livepatch: 'test_klp_callbacks_demo': patching complete [ 174.675094] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 174.675112] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 174.675133] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 174.675134] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 176.067150] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 176.067252] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 176.067253] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 176.088083] % rmmod test_klp_callbacks_demo [ 176.194636] ===== TEST: pre-patch callback -ENODEV ===== [ 176.197807] % modprobe test_klp_callbacks_mod [ 176.199160] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 176.199520] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 176.201031] livepatch: enabling patch 'test_klp_callbacks_demo' [ 176.201033] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 176.201061] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 176.201062] livepatch: pre-patch callback failed for object 'vmlinux' [ 176.201063] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 176.201064] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 176.201079] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 176.201187] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 176.346872] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 176.347900] % rmmod test_klp_callbacks_mod [ 176.349044] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 176.424402] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 176.427567] % modprobe test_klp_callbacks_demo [ 176.429103] livepatch: enabling patch 'test_klp_callbacks_demo' [ 176.429105] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 176.429125] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 176.429126] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 177.667156] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 177.667260] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 177.667261] livepatch: 'test_klp_callbacks_demo': patching complete [ 177.753119] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 177.754056] % modprobe test_klp_callbacks_mod [ 177.755378] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 177.755381] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 177.755383] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 177.755385] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 177.846782] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 177.846853] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 177.846869] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 177.846891] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 177.846892] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 179.027108] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 179.027212] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 179.027214] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 179.058400] % rmmod test_klp_callbacks_demo [ 179.124598] ===== TEST: multiple target modules ===== [ 179.127765] % modprobe test_klp_callbacks_busy block_transition=N [ 179.129305] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 179.129311] test_klp_callbacks_busy: busymod_work_func enter [ 179.129313] test_klp_callbacks_busy: busymod_work_func exit [ 179.132729] % modprobe test_klp_callbacks_demo [ 179.134243] livepatch: enabling patch 'test_klp_callbacks_demo' [ 179.134247] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 179.134267] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 179.134268] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 179.135680] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 180.947100] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 180.947201] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 180.947203] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 180.947204] livepatch: 'test_klp_callbacks_demo': patching complete [ 180.970719] % modprobe test_klp_callbacks_mod [ 180.972226] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 180.972228] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 180.972230] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 180.972273] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 180.973615] % rmmod test_klp_callbacks_mod [ 180.974736] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 180.974748] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 180.974750] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 180.974751] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 181.046824] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 181.046842] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 181.046860] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 181.046861] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 181.046863] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 181.907102] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 181.908849] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 181.908851] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 181.908853] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 181.955928] % rmmod test_klp_callbacks_demo [ 182.057660] % rmmod test_klp_callbacks_busy [ 182.058777] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 182.134704] ===== TEST: busy target module ===== [ 182.137780] % modprobe test_klp_callbacks_busy block_transition=Y [ 182.139259] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 182.139263] test_klp_callbacks_busy: busymod_work_func enter [ 182.142889] % modprobe test_klp_callbacks_demo [ 182.144362] livepatch: enabling patch 'test_klp_callbacks_demo' [ 182.144364] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 182.144382] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 182.144383] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 182.145742] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 182.150873] % modprobe test_klp_callbacks_mod [ 182.152293] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 182.152296] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 182.152339] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 182.153479] % rmmod test_klp_callbacks_mod [ 182.154578] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 182.154591] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 182.154592] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 182.196952] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 182.196973] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 182.197122] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 184.947083] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 184.948859] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 184.948861] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 184.948862] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 185.020008] % rmmod test_klp_callbacks_demo [ 185.077670] % rmmod test_klp_callbacks_busy [ 185.106398] test_klp_callbacks_busy: busymod_work_func exit [ 185.106407] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 185.184323] ===== TEST: multiple livepatches ===== [ 185.187426] % modprobe test_klp_callbacks_demo [ 185.188999] livepatch: enabling patch 'test_klp_callbacks_demo' [ 185.189001] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 185.189021] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 185.189022] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 186.067143] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 186.067283] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 186.067284] livepatch: 'test_klp_callbacks_demo': patching complete [ 186.109240] % modprobe test_klp_callbacks_demo2 [ 186.110881] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 186.110883] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 186.110904] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 186.110906] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 187.107240] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 187.107352] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 187.107353] livepatch: 'test_klp_callbacks_demo2': patching complete [ 187.129168] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 187.129188] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 187.129208] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 187.129209] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 187.987516] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 187.987618] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 187.987620] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 188.037170] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 188.037188] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 188.037205] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 188.037206] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 189.027062] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 189.027164] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 189.027166] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 189.047265] % rmmod test_klp_callbacks_demo2 [ 189.137664] % rmmod test_klp_callbacks_demo [ 189.224455] ===== TEST: atomic replace ===== [ 189.227586] % modprobe test_klp_callbacks_demo [ 189.229201] livepatch: enabling patch 'test_klp_callbacks_demo' [ 189.229203] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 189.229222] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 189.229224] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 190.067084] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 190.067235] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 190.067237] livepatch: 'test_klp_callbacks_demo': patching complete [ 190.148887] % modprobe test_klp_callbacks_demo2 replace=1 [ 190.150416] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 190.150419] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 190.150439] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 190.150441] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 191.747107] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 191.747218] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 191.747220] livepatch: 'test_klp_callbacks_demo2': patching complete [ 191.778578] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 191.778598] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 191.778619] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 191.778621] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 192.947121] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 192.947227] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 192.947229] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 192.989892] % rmmod test_klp_callbacks_demo2 [ 193.057940] % rmmod test_klp_callbacks_demo [ 193.160197] livepatch: kernel.ftrace_enabled = 1 [ 193.167730] ===== TEST: basic shadow variable API ===== [ 193.170833] % modprobe test_klp_shadow_vars [ 193.172209] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 193.172211] test_klp_shadow_vars: got expected NULL result [ 193.172213] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 193.172214] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 193.172217] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 193.172218] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 193.172220] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 193.172221] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 193.172224] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 193.172225] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 193.172227] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 193.172229] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 193.172231] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 193.172232] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 193.172234] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 193.172236] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 193.172237] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 193.172238] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 193.172239] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 193.172240] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 193.172241] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 193.172243] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 193.172244] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 193.172245] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 193.172246] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 193.172247] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 193.172249] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 193.172251] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 193.172252] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 193.172254] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 193.172255] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 193.172257] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 193.172258] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 193.172260] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 193.172261] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 193.172262] test_klp_shadow_vars: got expected NULL result [ 193.172263] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 193.172265] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 193.172266] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 193.172267] test_klp_shadow_vars: got expected NULL result [ 193.172268] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 193.172269] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 193.172270] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 193.172271] test_klp_shadow_vars: got expected NULL result [ 193.172272] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 193.172274] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 193.172275] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 193.172276] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 193.172277] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 193.172278] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 193.172287] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 193.172288] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 193.172289] test_klp_shadow_vars: got expected NULL result [ 193.172290] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 193.172291] test_klp_shadow_vars: got expected NULL result [ 193.172292] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 193.172293] test_klp_shadow_vars: got expected NULL result [ 193.173588] % rmmod test_klp_shadow_vars [ 193.270211] livepatch: kernel.ftrace_enabled = 1 [ 193.277772] ===== TEST: system state modification ===== [ 193.280982] % modprobe test_klp_state [ 193.282421] livepatch: enabling patch 'test_klp_state' [ 193.282422] livepatch: 'test_klp_state': initializing patching transition [ 193.282443] test_klp_state: pre_patch_callback: vmlinux [ 193.282444] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 193.282445] livepatch: 'test_klp_state': starting patching transition [ 194.627016] livepatch: 'test_klp_state': completing patching transition [ 194.627121] test_klp_state: post_patch_callback: vmlinux [ 194.627122] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 194.627123] livepatch: 'test_klp_state': patching complete [ 194.707923] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 194.707943] livepatch: 'test_klp_state': initializing unpatching transition [ 194.707962] test_klp_state: pre_unpatch_callback: vmlinux [ 194.707963] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 194.707964] livepatch: 'test_klp_state': starting unpatching transition [ 195.667037] livepatch: 'test_klp_state': completing unpatching transition [ 195.667141] test_klp_state: post_unpatch_callback: vmlinux [ 195.667143] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 195.667144] livepatch: 'test_klp_state': unpatching complete [ 195.718014] % rmmod test_klp_state [ 195.794830] ===== TEST: taking over system state modification ===== [ 195.797971] % modprobe test_klp_state [ 195.799572] livepatch: enabling patch 'test_klp_state' [ 195.799574] livepatch: 'test_klp_state': initializing patching transition [ 195.799595] test_klp_state: pre_patch_callback: vmlinux [ 195.799596] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 195.799598] livepatch: 'test_klp_state': starting patching transition [ 196.867056] livepatch: 'test_klp_state': completing patching transition [ 196.867162] test_klp_state: post_patch_callback: vmlinux [ 196.867164] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 196.867165] livepatch: 'test_klp_state': patching complete [ 196.922499] % modprobe test_klp_state2 [ 196.924010] livepatch: enabling patch 'test_klp_state2' [ 196.924012] livepatch: 'test_klp_state2': initializing patching transition [ 196.924032] test_klp_state2: pre_patch_callback: vmlinux [ 196.924033] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 196.924034] livepatch: 'test_klp_state2': starting patching transition [ 198.627070] livepatch: 'test_klp_state2': completing patching transition [ 198.627227] test_klp_state2: post_patch_callback: vmlinux [ 198.627229] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 198.627230] livepatch: 'test_klp_state2': patching complete [ 198.654169] % rmmod test_klp_state [ 198.696775] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 198.696796] livepatch: 'test_klp_state2': initializing unpatching transition [ 198.696818] test_klp_state2: pre_unpatch_callback: vmlinux [ 198.696820] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 198.696821] livepatch: 'test_klp_state2': starting unpatching transition [ 199.667041] livepatch: 'test_klp_state2': completing unpatching transition [ 199.667222] test_klp_state2: post_unpatch_callback: vmlinux [ 199.667223] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 199.667224] livepatch: 'test_klp_state2': unpatching complete [ 199.706641] % rmmod test_klp_state2 [ 199.794709] ===== TEST: compatible cumulative livepatches ===== [ 199.797951] % modprobe test_klp_state2 [ 199.799497] livepatch: enabling patch 'test_klp_state2' [ 199.799500] livepatch: 'test_klp_state2': initializing patching transition [ 199.799521] test_klp_state2: pre_patch_callback: vmlinux [ 199.799522] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 199.799524] livepatch: 'test_klp_state2': starting patching transition [ 200.707033] livepatch: 'test_klp_state2': completing patching transition [ 200.707156] test_klp_state2: post_patch_callback: vmlinux [ 200.707158] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 200.707159] livepatch: 'test_klp_state2': patching complete [ 200.719453] % modprobe test_klp_state3 [ 200.721036] livepatch: enabling patch 'test_klp_state3' [ 200.721040] livepatch: 'test_klp_state3': initializing patching transition [ 200.721063] test_klp_state3: pre_patch_callback: vmlinux [ 200.721064] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 200.721065] livepatch: 'test_klp_state3': starting patching transition [ 201.667030] livepatch: 'test_klp_state3': completing patching transition [ 201.667132] test_klp_state3: post_patch_callback: vmlinux [ 201.667134] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 201.667135] livepatch: 'test_klp_state3': patching complete [ 201.740654] % rmmod test_klp_state2 [ 201.790108] % modprobe test_klp_state2 [ 201.791613] livepatch: enabling patch 'test_klp_state2' [ 201.791616] livepatch: 'test_klp_state2': initializing patching transition [ 201.791636] test_klp_state2: pre_patch_callback: vmlinux [ 201.791637] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 201.791639] livepatch: 'test_klp_state2': starting patching transition [ 202.947001] livepatch: 'test_klp_state2': completing patching transition [ 202.947134] test_klp_state2: post_patch_callback: vmlinux [ 202.947136] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 202.947137] livepatch: 'test_klp_state2': patching complete [ 203.013457] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 203.013476] livepatch: 'test_klp_state2': initializing unpatching transition [ 203.013497] test_klp_state2: pre_unpatch_callback: vmlinux [ 203.013498] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 203.013499] livepatch: 'test_klp_state2': starting unpatching transition [ 204.627021] livepatch: 'test_klp_state2': completing unpatching transition [ 204.627127] test_klp_state2: post_unpatch_callback: vmlinux [ 204.627128] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 204.627130] livepatch: 'test_klp_state2': unpatching complete [ 204.628240] % rmmod test_klp_state2 [ 204.677492] % rmmod test_klp_state3 [ 204.754498] ===== TEST: incompatible cumulative livepatches ===== [ 204.757803] % modprobe test_klp_state2 [ 204.759469] livepatch: enabling patch 'test_klp_state2' [ 204.759471] livepatch: 'test_klp_state2': initializing patching transition [ 204.759509] test_klp_state2: pre_patch_callback: vmlinux [ 204.759511] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 204.759512] livepatch: 'test_klp_state2': starting patching transition [ 205.667054] livepatch: 'test_klp_state2': completing patching transition [ 205.667221] test_klp_state2: post_patch_callback: vmlinux [ 205.667223] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 205.667224] livepatch: 'test_klp_state2': patching complete [ 205.676418] % modprobe test_klp_state [ 205.678021] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 205.796666] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 205.796711] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 205.796727] livepatch: 'test_klp_state2': initializing unpatching transition [ 205.796748] test_klp_state2: pre_unpatch_callback: vmlinux [ 205.796749] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 205.796750] livepatch: 'test_klp_state2': starting unpatching transition [ 206.627024] livepatch: 'test_klp_state2': completing unpatching transition [ 206.627126] test_klp_state2: post_unpatch_callback: vmlinux [ 206.627127] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 206.627128] livepatch: 'test_klp_state2': unpatching complete [ 206.705649] % rmmod test_klp_state2 [ 206.799832] livepatch: kernel.ftrace_enabled = 1 [ 206.807523] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 206.809453] livepatch: kernel.ftrace_enabled = 0 [ 206.809519] % modprobe test_klp_livepatch [ 206.811132] livepatch: enabling patch 'test_klp_livepatch' [ 206.811134] livepatch: 'test_klp_livepatch': initializing patching transition [ 206.811157] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 206.811159] livepatch: failed to patch object 'vmlinux' [ 206.811160] livepatch: failed to enable patch 'test_klp_livepatch' [ 206.811161] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 206.811162] livepatch: 'test_klp_livepatch': completing unpatching transition [ 206.811267] livepatch: 'test_klp_livepatch': unpatching complete [ 206.946752] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 206.948665] livepatch: kernel.ftrace_enabled = 1 [ 206.951864] % modprobe test_klp_livepatch [ 206.953500] livepatch: enabling patch 'test_klp_livepatch' [ 206.953502] livepatch: 'test_klp_livepatch': initializing patching transition [ 206.954621] livepatch: 'test_klp_livepatch': starting patching transition [ 208.147074] livepatch: 'test_klp_livepatch': completing patching transition [ 208.147180] livepatch: 'test_klp_livepatch': patching complete [ 208.181130] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 208.182202] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 208.182223] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 208.182241] livepatch: 'test_klp_livepatch': starting unpatching transition [ 209.106989] livepatch: 'test_klp_livepatch': completing unpatching transition [ 209.108516] livepatch: 'test_klp_livepatch': unpatching complete [ 209.192468] % rmmod test_klp_livepatch [ 209.269412] livepatch: kernel.ftrace_enabled = 1 [ 209.277289] ===== TEST: sysfs test ===== [ 209.280562] % modprobe test_klp_livepatch [ 209.282041] livepatch: enabling patch 'test_klp_livepatch' [ 209.282043] livepatch: 'test_klp_livepatch': initializing patching transition [ 209.283130] livepatch: 'test_klp_livepatch': starting patching transition [ 210.946994] livepatch: 'test_klp_livepatch': completing patching transition [ 210.947096] livepatch: 'test_klp_livepatch': patching complete [ 211.020069] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 211.020084] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 211.020103] livepatch: 'test_klp_livepatch': starting unpatching transition [ 211.906955] livepatch: 'test_klp_livepatch': completing unpatching transition [ 211.908429] livepatch: 'test_klp_livepatch': unpatching complete [ 211.928959] % rmmod test_klp_livepatch [ 212.004690] ===== TEST: sysfs test object/patched ===== [ 212.007954] % modprobe test_klp_callbacks_demo [ 212.009626] livepatch: enabling patch 'test_klp_callbacks_demo' [ 212.009628] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 212.009649] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 212.009650] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 213.106985] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 213.107148] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 213.107150] livepatch: 'test_klp_callbacks_demo': patching complete [ 213.133983] % modprobe test_klp_callbacks_mod [ 213.135432] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 213.135434] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 213.135436] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 213.135478] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 213.137671] % rmmod test_klp_callbacks_mod [ 213.138782] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 213.138796] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 213.138798] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 213.138799] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 213.187620] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 213.187639] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 213.187660] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 213.187661] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 214.956966] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 214.957069] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 214.957070] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 215.004034] % rmmod test_klp_callbacks_demo [ 216.486413] livepatch: kernel.ftrace_enabled = 1 [ 216.494184] ===== TEST: basic function patching ===== [ 216.497478] % modprobe test_klp_livepatch [ 216.499123] livepatch: enabling patch 'test_klp_livepatch' [ 216.499125] livepatch: 'test_klp_livepatch': initializing patching transition [ 216.500232] livepatch: 'test_klp_livepatch': starting patching transition [ 217.906980] livepatch: 'test_klp_livepatch': completing patching transition [ 217.907138] livepatch: 'test_klp_livepatch': patching complete [ 217.927548] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 217.927569] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 217.927590] livepatch: 'test_klp_livepatch': starting unpatching transition [ 218.947043] livepatch: 'test_klp_livepatch': completing unpatching transition [ 218.948644] livepatch: 'test_klp_livepatch': unpatching complete [ 219.038726] % rmmod test_klp_livepatch [ 219.115033] ===== TEST: multiple livepatches ===== [ 219.118186] % modprobe test_klp_livepatch [ 219.119788] livepatch: enabling patch 'test_klp_livepatch' [ 219.119790] livepatch: 'test_klp_livepatch': initializing patching transition [ 219.120986] livepatch: 'test_klp_livepatch': starting patching transition [ 220.866989] livepatch: 'test_klp_livepatch': completing patching transition [ 220.867145] livepatch: 'test_klp_livepatch': patching complete [ 220.952783] test_klp_livepatch: this has been live patched [ 220.957044] % modprobe test_klp_atomic_replace replace=0 [ 220.958580] livepatch: enabling patch 'test_klp_atomic_replace' [ 220.958582] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 220.959660] livepatch: 'test_klp_atomic_replace': starting patching transition [ 221.826984] livepatch: 'test_klp_atomic_replace': completing patching transition [ 221.827087] livepatch: 'test_klp_atomic_replace': patching complete [ 221.877823] test_klp_livepatch: this has been live patched [ 221.878665] test_klp_atomic_replace: this has been live patched [ 221.878801] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 221.878822] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 221.878843] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 222.947011] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 222.948465] livepatch: 'test_klp_atomic_replace': unpatching complete [ 222.989788] % rmmod test_klp_atomic_replace [ 223.047531] test_klp_livepatch: this has been live patched [ 223.048613] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 223.048632] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 223.048654] livepatch: 'test_klp_livepatch': starting unpatching transition [ 223.987012] livepatch: 'test_klp_livepatch': completing unpatching transition [ 223.988534] livepatch: 'test_klp_livepatch': unpatching complete [ 224.059000] % rmmod test_klp_livepatch [ 224.156318] ===== TEST: atomic replace livepatch ===== [ 224.159489] % modprobe test_klp_livepatch [ 224.160923] livepatch: enabling patch 'test_klp_livepatch' [ 224.160926] livepatch: 'test_klp_livepatch': initializing patching transition [ 224.162024] livepatch: 'test_klp_livepatch': starting patching transition [ 225.666965] livepatch: 'test_klp_livepatch': completing patching transition [ 225.667118] livepatch: 'test_klp_livepatch': patching complete [ 225.689716] test_klp_livepatch: this has been live patched [ 225.693937] % modprobe test_klp_atomic_replace replace=1 [ 225.695517] livepatch: enabling patch 'test_klp_atomic_replace' [ 225.695519] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 225.696644] livepatch: 'test_klp_atomic_replace': starting patching transition [ 226.786967] livepatch: 'test_klp_atomic_replace': completing patching transition [ 226.788286] livepatch: 'test_klp_atomic_replace': patching complete [ 226.818010] test_klp_atomic_replace: this has been live patched [ 226.819031] % rmmod test_klp_livepatch [ 226.878235] test_klp_atomic_replace: this has been live patched [ 226.878402] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 226.878421] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 226.878443] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 227.907041] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 227.908601] livepatch: 'test_klp_atomic_replace': unpatching complete [ 227.988889] % rmmod test_klp_atomic_replace [ 228.081616] livepatch: kernel.ftrace_enabled = 1 [ 228.089746] ===== TEST: target module before livepatch ===== [ 228.093012] % modprobe test_klp_callbacks_mod [ 228.094389] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 228.097768] % modprobe test_klp_callbacks_demo [ 228.099261] livepatch: enabling patch 'test_klp_callbacks_demo' [ 228.099263] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 228.099286] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 228.099287] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 228.099289] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 229.027084] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 229.027196] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 229.027198] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 229.027199] livepatch: 'test_klp_callbacks_demo': patching complete [ 229.118464] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 229.118483] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 229.118504] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 229.118505] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 229.118506] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 230.866938] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 230.867117] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 230.867118] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 230.867120] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 230.935471] % rmmod test_klp_callbacks_demo [ 230.997625] % rmmod test_klp_callbacks_mod [ 230.998771] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 231.064190] ===== TEST: module_coming notifier ===== [ 231.067155] % modprobe test_klp_callbacks_demo [ 231.068630] livepatch: enabling patch 'test_klp_callbacks_demo' [ 231.068632] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 231.068652] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 231.068653] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 232.786968] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 232.787122] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 232.787123] livepatch: 'test_klp_callbacks_demo': patching complete [ 232.800046] % modprobe test_klp_callbacks_mod [ 232.801418] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 232.801421] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 232.801423] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 232.801465] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 232.801808] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 232.801826] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 232.801848] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 232.801849] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 232.801850] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 233.906995] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 233.907137] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 233.907139] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 233.907140] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 233.912080] % rmmod test_klp_callbacks_demo [ 233.987482] % rmmod test_klp_callbacks_mod [ 233.988644] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 234.064216] ===== TEST: module_going notifier ===== [ 234.067491] % modprobe test_klp_callbacks_mod [ 234.068784] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 234.072123] % modprobe test_klp_callbacks_demo [ 234.073590] livepatch: enabling patch 'test_klp_callbacks_demo' [ 234.073592] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 234.073611] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 234.073613] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 234.073614] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 234.866962] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 234.867066] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 234.867068] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 234.867069] livepatch: 'test_klp_callbacks_demo': patching complete [ 234.889218] % rmmod test_klp_callbacks_mod [ 234.890290] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 234.890303] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 234.890305] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 234.890307] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 234.936640] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 234.936658] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 234.936677] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 234.936678] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 235.906953] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 235.907059] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 235.907060] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 235.946374] % rmmod test_klp_callbacks_demo [ 236.044816] ===== TEST: module_coming and module_going notifiers ===== [ 236.047961] % modprobe test_klp_callbacks_demo [ 236.049483] livepatch: enabling patch 'test_klp_callbacks_demo' [ 236.049485] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 236.049505] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 236.049506] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 236.947000] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 236.947176] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 236.947178] livepatch: 'test_klp_callbacks_demo': patching complete [ 236.969682] % modprobe test_klp_callbacks_mod [ 236.971078] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 236.971080] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 236.971082] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 236.971123] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 236.972339] % rmmod test_klp_callbacks_mod [ 236.973427] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 236.973439] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 236.973441] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 236.973442] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 237.036714] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 237.036732] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 237.036753] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 237.036754] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 237.906936] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 237.907087] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 237.907088] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 237.945408] % rmmod test_klp_callbacks_demo [ 238.024442] ===== TEST: target module not present ===== [ 238.027541] % modprobe test_klp_callbacks_demo [ 238.028922] livepatch: enabling patch 'test_klp_callbacks_demo' [ 238.028925] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 238.028945] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 238.028946] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 239.666976] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 239.667083] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 239.667084] livepatch: 'test_klp_callbacks_demo': patching complete [ 239.757876] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 239.757896] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 239.757916] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 239.757917] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 240.866920] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 240.867056] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 240.867058] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 240.868130] % rmmod test_klp_callbacks_demo [ 240.960617] ERROR: livepatch kselftest(s) failed [ 241.022110] livepatch: kernel.ftrace_enabled = 1 [ 241.029698] ===== TEST: basic shadow variable API ===== [ 241.032978] % modprobe test_klp_shadow_vars [ 241.034446] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 241.034448] test_klp_shadow_vars: got expected NULL result [ 241.034449] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 241.034451] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 241.034454] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 241.034455] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 241.034457] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 241.034459] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 241.034461] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 241.034462] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 241.034464] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 241.034466] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 241.034468] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 241.034469] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 241.034471] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 241.034473] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 241.034474] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 241.034475] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 241.034476] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 241.034478] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 241.034479] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 241.034480] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 241.034481] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 241.034482] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 241.034483] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 241.034485] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 241.034486] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 241.034488] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 241.034489] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 241.034491] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 241.034492] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 241.034494] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 241.034496] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 241.034497] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 241.034499] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 241.034500] test_klp_shadow_vars: got expected NULL result [ 241.034501] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 241.034502] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 241.034503] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 241.034505] test_klp_shadow_vars: got expected NULL result [ 241.034505] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 241.034507] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 241.034508] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 241.034509] test_klp_shadow_vars: got expected NULL result [ 241.034510] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 241.034512] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 241.034513] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 241.034514] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 241.034515] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 241.034516] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 241.034522] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 241.034523] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 241.034524] test_klp_shadow_vars: got expected NULL result [ 241.034525] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 241.034526] test_klp_shadow_vars: got expected NULL result [ 241.034527] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 241.034528] test_klp_shadow_vars: got expected NULL result [ 241.035837] % rmmod test_klp_shadow_vars [ 241.150238] livepatch: kernel.ftrace_enabled = 1 [ 241.157791] ===== TEST: system state modification ===== [ 241.161055] % modprobe test_klp_state [ 241.162597] livepatch: enabling patch 'test_klp_state' [ 241.162599] livepatch: 'test_klp_state': initializing patching transition [ 241.162624] test_klp_state: pre_patch_callback: vmlinux [ 241.162625] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 241.162626] livepatch: 'test_klp_state': starting patching transition [ 242.636994] livepatch: 'test_klp_state': completing patching transition [ 242.637119] test_klp_state: post_patch_callback: vmlinux [ 242.637121] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 242.637122] livepatch: 'test_klp_state': patching complete [ 242.690300] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 242.690318] livepatch: 'test_klp_state': initializing unpatching transition [ 242.690340] test_klp_state: pre_unpatch_callback: vmlinux [ 242.690341] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 242.690342] livepatch: 'test_klp_state': starting unpatching transition [ 243.666983] livepatch: 'test_klp_state': completing unpatching transition [ 243.667104] test_klp_state: post_unpatch_callback: vmlinux [ 243.667105] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 243.667106] livepatch: 'test_klp_state': unpatching complete [ 243.700880] % rmmod test_klp_state [ 243.774968] ===== TEST: taking over system state modification ===== [ 243.778186] % modprobe test_klp_state [ 243.779642] livepatch: enabling patch 'test_klp_state' [ 243.779645] livepatch: 'test_klp_state': initializing patching transition [ 243.779665] test_klp_state: pre_patch_callback: vmlinux [ 243.779667] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 243.779668] livepatch: 'test_klp_state': starting patching transition [ 244.707041] livepatch: 'test_klp_state': completing patching transition [ 244.707171] test_klp_state: post_patch_callback: vmlinux [ 244.707172] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 244.707173] livepatch: 'test_klp_state': patching complete [ 244.801759] % modprobe test_klp_state2 [ 244.803222] livepatch: enabling patch 'test_klp_state2' [ 244.803223] livepatch: 'test_klp_state2': initializing patching transition [ 244.803243] test_klp_state2: pre_patch_callback: vmlinux [ 244.803244] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 244.803245] livepatch: 'test_klp_state2': starting patching transition [ 245.747022] livepatch: 'test_klp_state2': completing patching transition [ 245.747131] test_klp_state2: post_patch_callback: vmlinux [ 245.747133] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 245.747134] livepatch: 'test_klp_state2': patching complete [ 245.822853] % rmmod test_klp_state [ 245.896693] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 245.896711] livepatch: 'test_klp_state2': initializing unpatching transition [ 245.896733] test_klp_state2: pre_unpatch_callback: vmlinux [ 245.896735] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 245.896736] livepatch: 'test_klp_state2': starting unpatching transition [ 247.666976] livepatch: 'test_klp_state2': completing unpatching transition [ 247.667145] test_klp_state2: post_unpatch_callback: vmlinux [ 247.667146] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 247.667147] livepatch: 'test_klp_state2': unpatching complete [ 247.712764] % rmmod test_klp_state2 [ 247.774578] ===== TEST: compatible cumulative livepatches ===== [ 247.777820] % modprobe test_klp_state2 [ 247.779360] livepatch: enabling patch 'test_klp_state2' [ 247.779362] livepatch: 'test_klp_state2': initializing patching transition [ 247.779401] test_klp_state2: pre_patch_callback: vmlinux [ 247.779402] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 247.779403] livepatch: 'test_klp_state2': starting patching transition [ 248.706971] livepatch: 'test_klp_state2': completing patching transition [ 248.707111] test_klp_state2: post_patch_callback: vmlinux [ 248.707112] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 248.707114] livepatch: 'test_klp_state2': patching complete [ 248.800628] % modprobe test_klp_state3 [ 248.802120] livepatch: enabling patch 'test_klp_state3' [ 248.802122] livepatch: 'test_klp_state3': initializing patching transition [ 248.802143] test_klp_state3: pre_patch_callback: vmlinux [ 248.802144] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 248.802145] livepatch: 'test_klp_state3': starting patching transition [ 249.747012] livepatch: 'test_klp_state3': completing patching transition [ 249.747117] test_klp_state3: post_patch_callback: vmlinux [ 249.747119] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 249.747120] livepatch: 'test_klp_state3': patching complete [ 249.821681] % rmmod test_klp_state2 [ 249.889775] % modprobe test_klp_state2 [ 249.891292] livepatch: enabling patch 'test_klp_state2' [ 249.891294] livepatch: 'test_klp_state2': initializing patching transition [ 249.891314] test_klp_state2: pre_patch_callback: vmlinux [ 249.891315] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 249.891317] livepatch: 'test_klp_state2': starting patching transition [ 250.706998] livepatch: 'test_klp_state2': completing patching transition [ 250.707174] test_klp_state2: post_patch_callback: vmlinux [ 250.707176] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 250.707177] livepatch: 'test_klp_state2': patching complete [ 250.808275] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 250.808295] livepatch: 'test_klp_state2': initializing unpatching transition [ 250.808317] test_klp_state2: pre_unpatch_callback: vmlinux [ 250.808318] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 250.808319] livepatch: 'test_klp_state2': starting unpatching transition [ 252.146949] livepatch: 'test_klp_state2': completing unpatching transition [ 252.147137] test_klp_state2: post_unpatch_callback: vmlinux [ 252.147139] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 252.147140] livepatch: 'test_klp_state2': unpatching complete [ 252.221718] % rmmod test_klp_state2 [ 252.267508] % rmmod test_klp_state3 [ 252.344651] ===== TEST: incompatible cumulative livepatches ===== [ 252.347830] % modprobe test_klp_state2 [ 252.349374] livepatch: enabling patch 'test_klp_state2' [ 252.349376] livepatch: 'test_klp_state2': initializing patching transition [ 252.349397] test_klp_state2: pre_patch_callback: vmlinux [ 252.349398] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 252.349399] livepatch: 'test_klp_state2': starting patching transition [ 253.666985] livepatch: 'test_klp_state2': completing patching transition [ 253.667137] test_klp_state2: post_patch_callback: vmlinux [ 253.667139] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 253.667140] livepatch: 'test_klp_state2': patching complete [ 253.672445] % modprobe test_klp_state [ 253.673955] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 253.836626] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 253.836711] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 253.836729] livepatch: 'test_klp_state2': initializing unpatching transition [ 253.836751] test_klp_state2: pre_unpatch_callback: vmlinux [ 253.836752] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 253.836753] livepatch: 'test_klp_state2': starting unpatching transition [ 255.107053] livepatch: 'test_klp_state2': completing unpatching transition [ 255.107160] test_klp_state2: post_unpatch_callback: vmlinux [ 255.107162] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 255.107163] livepatch: 'test_klp_state2': unpatching complete [ 255.149006] % rmmod test_klp_state2 [ 255.251724] livepatch: kernel.ftrace_enabled = 1 [ 255.259721] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 255.261663] livepatch: kernel.ftrace_enabled = 0 [ 255.261800] % modprobe test_klp_livepatch [ 255.263372] livepatch: enabling patch 'test_klp_livepatch' [ 255.263374] livepatch: 'test_klp_livepatch': initializing patching transition [ 255.263397] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 255.263399] livepatch: failed to patch object 'vmlinux' [ 255.263400] livepatch: failed to enable patch 'test_klp_livepatch' [ 255.263401] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 255.263402] livepatch: 'test_klp_livepatch': completing unpatching transition [ 255.263560] livepatch: 'test_klp_livepatch': unpatching complete [ 255.386651] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 255.388605] livepatch: kernel.ftrace_enabled = 1 [ 255.391657] % modprobe test_klp_livepatch [ 255.393208] livepatch: enabling patch 'test_klp_livepatch' [ 255.393210] livepatch: 'test_klp_livepatch': initializing patching transition [ 255.394450] livepatch: 'test_klp_livepatch': starting patching transition [ 256.786971] livepatch: 'test_klp_livepatch': completing patching transition [ 256.787078] livepatch: 'test_klp_livepatch': patching complete [ 256.823325] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 256.824273] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 256.824293] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 256.824311] livepatch: 'test_klp_livepatch': starting unpatching transition [ 257.746928] livepatch: 'test_klp_livepatch': completing unpatching transition [ 257.748446] livepatch: 'test_klp_livepatch': unpatching complete [ 257.833832] % rmmod test_klp_livepatch [ 257.929505] livepatch: kernel.ftrace_enabled = 1 [ 257.936957] ===== TEST: sysfs test ===== [ 257.940220] % modprobe test_klp_livepatch [ 257.941745] livepatch: enabling patch 'test_klp_livepatch' [ 257.941747] livepatch: 'test_klp_livepatch': initializing patching transition [ 257.942869] livepatch: 'test_klp_livepatch': starting patching transition [ 258.946982] livepatch: 'test_klp_livepatch': completing patching transition [ 258.947104] livepatch: 'test_klp_livepatch': patching complete [ 258.969357] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 258.969373] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 258.969393] livepatch: 'test_klp_livepatch': starting unpatching transition [ 260.716963] livepatch: 'test_klp_livepatch': completing unpatching transition [ 260.718450] livepatch: 'test_klp_livepatch': unpatching complete [ 260.785513] % rmmod test_klp_livepatch [ 260.874332] ===== TEST: sysfs test object/patched ===== [ 260.877504] % modprobe test_klp_callbacks_demo [ 260.878941] livepatch: enabling patch 'test_klp_callbacks_demo' [ 260.878943] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 260.878965] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 260.878966] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 261.906924] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 261.907028] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 261.907030] livepatch: 'test_klp_callbacks_demo': patching complete [ 262.003387] % modprobe test_klp_callbacks_mod [ 262.004837] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 262.004839] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 262.004841] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 262.004883] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 262.007085] % rmmod test_klp_callbacks_mod [ 262.008282] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 262.008297] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 262.008299] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 262.008300] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 262.077659] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 262.077679] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 262.077698] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 262.077700] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 263.666952] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 263.667118] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 263.667119] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 263.692467] % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete test_klp_livepatch: this has been live patched % modprobe test_klp_atomic_replace replace=0 livepatch: enabling patch 'test_klp_atomic_replace' livepatch: 'test_klp_atomic_replace': initializing patching transition livepatch: 'test_klp_atomic_replace': starting patching transition livepatch: 'test_klp_atomic_replace': completing patching transition livepatch: 'test_klp_atomic_replace': patching complete test_klp_livepatch: this has been live patched test_klp_atomic_replace: this has been live patched % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled livepatch: 'test_klp_atomic_replace': initializing unpatching transition livepatch: 'test_klp_atomic_replace': starting unpatching transition livepatch: 'test_klp_atomic_replace': completing unpatching transition livepatch: 'test_klp_atomic_replace': unpatching complete % rmmod test_klp_atomic_replace test_klp_livepatch: this has been live patched % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete test_klp_livepatch: this has been live patched % modprobe test_klp_atomic_replace replace=1 livepatch: enabling patch 'test_klp_atomic_replace' livepatch: 'test_klp_atomic_replace': initializing patching transition livepatch: 'test_klp_atomic_replace': starting patching transition livepatch: 'test_klp_atomic_replace': completing patching transition livepatch: 'test_klp_atomic_replace': patching complete test_klp_atomic_replace: this has been live patched % rmmod test_klp_livepatch test_klp_atomic_replace: this has been live patched % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled livepatch: 'test_klp_atomic_replace': initializing unpatching transition livepatch: 'test_klp_atomic_replace': starting unpatching transition livepatch: 'test_klp_atomic_replace': completing unpatching transition livepatch: 'test_klp_atomic_replace': unpatching complete % rmmod test_klp_atomic_replace livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_init % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit % modprobe test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_init % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': patching complete % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_init % modprobe test_klp_callbacks_demo pre_patch_ret=-19 livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: pre-patch callback failed for object 'vmlinux' livepatch: failed to enable patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch livepatch: 'test_klp_callbacks_demo': completing unpatching transition livepatch: 'test_klp_callbacks_demo': unpatching complete modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_busy block_transition=N test_klp_callbacks_busy: test_klp_callbacks_busy_init test_klp_callbacks_busy: busymod_work_func enter test_klp_callbacks_busy: busymod_work_func exit % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_busy test_klp_callbacks_busy: test_klp_callbacks_busy_exit % modprobe test_klp_callbacks_busy block_transition=Y test_klp_callbacks_busy: test_klp_callbacks_busy_init test_klp_callbacks_busy: busymod_work_func enter % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_busy test_klp_callbacks_busy: busymod_work_func exit test_klp_callbacks_busy: test_klp_callbacks_busy_exit % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_demo2 livepatch: enabling patch 'test_klp_callbacks_demo2' livepatch: 'test_klp_callbacks_demo2': initializing patching transition test_klp_callbacks_demo2: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': starting patching transition livepatch: 'test_klp_callbacks_demo2': completing patching transition test_klp_callbacks_demo2: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': starting unpatching transition livepatch: 'test_klp_callbacks_demo2': completing unpatching transition test_klp_callbacks_demo2: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': unpatching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo2 % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_demo2 replace=1 livepatch: enabling patch 'test_klp_callbacks_demo2' livepatch: 'test_klp_callbacks_demo2': initializing patching transition test_klp_callbacks_demo2: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': starting patching transition livepatch: 'test_klp_callbacks_demo2': completing patching transition test_klp_callbacks_demo2: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': starting unpatching transition livepatch: 'test_klp_callbacks_demo2': completing unpatching transition test_klp_callbacks_demo2: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': unpatching complete % rmmod test_klp_callbacks_demo2 % rmmod test_klp_callbacks_demo livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_shadow_vars test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 test_klp_shadow_vars: got expected PTR3 -> PTR2 result test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 test_klp_shadow_vars: got expected PTR6 -> PTR5 result test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 test_klp_shadow_vars: got expected PTR8 -> PTR7 result test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 test_klp_shadow_vars: got expected PTR11 -> PTR10 result test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 test_klp_shadow_vars: got expected PTR13 -> PTR12 result test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 test_klp_shadow_vars: got expected PTR16 -> PTR15 result test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 test_klp_shadow_vars: got expected PTR3 -> PTR2 result test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 test_klp_shadow_vars: got expected PTR8 -> PTR7 result test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 test_klp_shadow_vars: got expected PTR13 -> PTR12 result test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 test_klp_shadow_vars: got expected PTR6 -> PTR5 result test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 test_klp_shadow_vars: got expected PTR11 -> PTR10 result test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 test_klp_shadow_vars: got expected PTR16 -> PTR15 result test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 test_klp_shadow_vars: got expected NULL result % rmmod test_klp_shadow_vars livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_state livepatch: enabling patch 'test_klp_state' livepatch: 'test_klp_state': initializing patching transition test_klp_state: pre_patch_callback: vmlinux test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel livepatch: 'test_klp_state': starting patching transition livepatch: 'test_klp_state': completing patching transition test_klp_state: post_patch_callback: vmlinux test_klp_state: fix_console_loglevel: fixing console_loglevel livepatch: 'test_klp_state': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled livepatch: 'test_klp_state': initializing unpatching transition test_klp_state: pre_unpatch_callback: vmlinux test_klp_state: restore_console_loglevel: restoring console_loglevel livepatch: 'test_klp_state': starting unpatching transition livepatch: 'test_klp_state': completing unpatching transition test_klp_state: post_unpatch_callback: vmlinux test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel livepatch: 'test_klp_state': unpatching complete % rmmod test_klp_state % modprobe test_klp_state livepatch: enabling patch 'test_klp_state' livepatch: 'test_klp_state': initializing patching transition test_klp_state: pre_patch_callback: vmlinux test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel livepatch: 'test_klp_state': starting patching transition livepatch: 'test_klp_state': completing patching transition test_klp_state: post_patch_callback: vmlinux test_klp_state: fix_console_loglevel: fixing console_loglevel livepatch: 'test_klp_state': patching complete % modprobe test_klp_state2 livepatch: enabling patch 'test_klp_state2' livepatch: 'test_klp_state2': initializing patching transition test_klp_state2: pre_patch_callback: vmlinux test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated livepatch: 'test_klp_state2': starting patching transition livepatch: 'test_klp_state2': completing patching transition test_klp_state2: post_patch_callback: vmlinux test_klp_state2: fix_console_loglevel: taking over the console_loglevel change livepatch: 'test_klp_state2': patching complete % rmmod test_klp_state % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled livepatch: 'test_klp_state2': initializing unpatching transition test_klp_state2: pre_unpatch_callback: vmlinux test_klp_state2: restore_console_loglevel: restoring console_loglevel livepatch: 'test_klp_state2': starting unpatching transition livepatch: 'test_klp_state2': completing unpatching transition test_klp_state2: post_unpatch_callback: vmlinux test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel livepatch: 'test_klp_state2': unpatching complete % rmmod test_klp_state2 % modprobe test_klp_state2 livepatch: enabling patch 'test_klp_state2' livepatch: 'test_klp_state2': initializing patching transition test_klp_state2: pre_patch_callback: vmlinux test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel livepatch: 'test_klp_state2': starting patching transition livepatch: 'test_klp_state2': completing patching transition test_klp_state2: post_patch_callback: vmlinux test_klp_state2: fix_console_loglevel: fixing console_loglevel livepatch: 'test_klp_state2': patching complete % modprobe test_klp_state3 livepatch: enabling patch 'test_klp_state3' livepatch: 'test_klp_state3': initializing patching transition test_klp_state3: pre_patch_callback: vmlinux test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated livepatch: 'test_klp_state3': starting patching transition livepatch: 'test_klp_state3': completing patching transition test_klp_state3: post_patch_callback: vmlinux test_klp_state3: fix_console_loglevel: taking over the console_loglevel change livepatch: 'test_klp_state3': patching complete % rmmod test_klp_state2 % modprobe test_klp_state2 livepatch: enabling patch 'test_klp_state2' livepatch: 'test_klp_state2': initializing patching transition test_klp_state2: pre_patch_callback: vmlinux test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated livepatch: 'test_klp_state2': starting patching transition livepatch: 'test_klp_state2': completing patching transition test_klp_state2: post_patch_callback: vmlinux test_klp_state2: fix_console_loglevel: taking over the console_loglevel change livepatch: 'test_klp_state2': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled livepatch: 'test_klp_state2': initializing unpatching transition test_klp_state2: pre_unpatch_callback: vmlinux test_klp_state2: restore_console_loglevel: restoring console_loglevel livepatch: 'test_klp_state2': starting unpatching transition livepatch: 'test_klp_state2': completing unpatching transition test_klp_state2: post_unpatch_callback: vmlinux test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel livepatch: 'test_klp_state2': unpatching complete % rmmod test_klp_state2 % rmmod test_klp_state3 % modprobe test_klp_state2 livepatch: enabling patch 'test_klp_state2' livepatch: 'test_klp_state2': initializing patching transition test_klp_state2: pre_patch_callback: vmlinux test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel livepatch: 'test_klp_state2': starting patching transition livepatch: 'test_klp_state2': completing patching transition test_klp_state2: post_patch_callback: vmlinux test_klp_state2: fix_console_loglevel: fixing console_loglevel livepatch: 'test_klp_state2': patching complete % modprobe test_klp_state livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. modprobe: ERROR: could not insert 'test_klp_state': Invalid argument % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled livepatch: 'test_klp_state2': initializing unpatching transition test_klp_state2: pre_unpatch_callback: vmlinux test_klp_state2: restore_console_loglevel: restoring console_loglevel livepatch: 'test_klp_state2': starting unpatching transition livepatch: 'test_klp_state2': completing unpatching transition test_klp_state2: post_unpatch_callback: vmlinux test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel livepatch: 'test_klp_state2': unpatching complete % rmmod test_klp_state2 livepatch: kernel.ftrace_enabled = 1 livepatch: kernel.ftrace_enabled = 0 % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) livepatch: failed to patch object 'vmlinux' livepatch: failed to enable patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete test_klp_livepatch: this has been live patched % modprobe test_klp_atomic_replace replace=0 livepatch: enabling patch 'test_klp_atomic_replace' livepatch: 'test_klp_atomic_replace': initializing patching transition livepatch: 'test_klp_atomic_replace': starting patching transition livepatch: 'test_klp_atomic_replace': completing patching transition livepatch: 'test_klp_atomic_replace': patching complete test_klp_livepatch: this has been live patched test_klp_atomic_replace: this has been live patched % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled livepatch: 'test_klp_atomic_replace': initializing unpatching transition livepatch: 'test_klp_atomic_replace': starting unpatching transition livepatch: 'test_klp_atomic_replace': completing unpatching transition livepatch: 'test_klp_atomic_replace': unpatching complete % rmmod test_klp_atomic_replace test_klp_livepatch: this has been live patched % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete test_klp_livepatch: this has been live patched % modprobe test_klp_atomic_replace replace=1 livepatch: enabling patch 'test_klp_atomic_replace' livepatch: 'test_klp_atomic_replace': initializing patching transition livepatch: 'test_klp_atomic_replace': starting patching transition livepatch: 'test_klp_atomic_replace': completing patching transition livepatch: 'test_klp_atomic_replace': patching complete test_klp_atomic_replace: this has been live patched % rmmod test_klp_livepatch test_klp_atomic_replace: this has been live patched % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled livepatch: 'test_klp_atomic_replace': initializing unpatching transition livepatch: 'test_klp_atomic_replace': starting unpatching transition livepatch: 'test_klp_atomic_replace': completing unpatching transition livepatch: 'test_klp_atomic_replace': unpatching complete % rmmod test_klp_atomic_replace livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_init % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit % modprobe test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_init % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': patching complete % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_init % modprobe test_klp_callbacks_demo pre_patch_ret=-19 livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: pre-patch callback failed for object 'vmlinux' livepatch: failed to enable patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch livepatch: 'test_klp_callbacks_demo': completing unpatching transition livepatch: 'test_klp_callbacks_demo': unpatching complete modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_busy block_transition=N test_klp_callbacks_busy: test_klp_callbacks_busy_init test_klp_callbacks_busy: busymod_work_func enter test_klp_callbacks_busy: busymod_work_func exit % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_busy test_klp_callbacks_busy: test_klp_callbacks_busy_exit % modprobe test_klp_callbacks_busy block_transition=Y test_klp_callbacks_busy: test_klp_callbacks_busy_init test_klp_callbacks_busy: busymod_work_func enter % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_busy test_klp_callbacks_busy: busymod_work_func exit test_klp_callbacks_busy: test_klp_callbacks_busy_exit % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_demo2 livepatch: enabling patch 'test_klp_callbacks_demo2' livepatch: 'test_klp_callbacks_demo2': initializing patching transition test_klp_callbacks_demo2: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': starting patching transition livepatch: 'test_klp_callbacks_demo2': completing patching transition test_klp_callbacks_demo2: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': starting unpatching transition livepatch: 'test_klp_callbacks_demo2': completing unpatching transition test_klp_callbacks_demo2: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': unpatching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo2 % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_demo2 replace=1 livepatch: enabling patch 'test_klp_callbacks_demo2' livepatch: 'test_klp_callbacks_demo2': initializing patching transition test_klp_callbacks_demo2: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': starting patching transition livepatch: 'test_klp_callbacks_demo2': completing patching transition test_klp_callbacks_demo2: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': starting unpatching transition livepatch: 'test_klp_callbacks_demo2': completing unpatching transition test_klp_callbacks_demo2: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo2': unpatching complete % rmmod test_klp_callbacks_demo2 % rmmod test_klp_callbacks_demo livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_shadow_vars test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 test_klp_shadow_vars: got expected PTR3 -> PTR2 result test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 test_klp_shadow_vars: got expected PTR6 -> PTR5 result test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 test_klp_shadow_vars: got expected PTR8 -> PTR7 result test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 test_klp_shadow_vars: got expected PTR11 -> PTR10 result test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 test_klp_shadow_vars: got expected PTR13 -> PTR12 result test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 test_klp_shadow_vars: got expected PTR16 -> PTR15 result test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 test_klp_shadow_vars: got expected PTR3 -> PTR2 result test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 test_klp_shadow_vars: got expected PTR8 -> PTR7 result test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 test_klp_shadow_vars: got expected PTR13 -> PTR12 result test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 test_klp_shadow_vars: got expected PTR6 -> PTR5 result test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 test_klp_shadow_vars: got expected PTR11 -> PTR10 result test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 test_klp_shadow_vars: got expected PTR16 -> PTR15 result test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 test_klp_shadow_vars: got expected NULL result test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 test_klp_shadow_vars: got expected NULL result % rmmod test_klp_shadow_vars livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_state livepatch: enabling patch 'test_klp_state' livepatch: 'test_klp_state': initializing patching transition test_klp_state: pre_patch_callback: vmlinux test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel livepatch: 'test_klp_state': starting patching transition livepatch: 'test_klp_state': completing patching transition test_klp_state: post_patch_callback: vmlinux test_klp_state: fix_console_loglevel: fixing console_loglevel livepatch: 'test_klp_state': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled livepatch: 'test_klp_state': initializing unpatching transition test_klp_state: pre_unpatch_callback: vmlinux test_klp_state: restore_console_loglevel: restoring console_loglevel livepatch: 'test_klp_state': starting unpatching transition livepatch: 'test_klp_state': completing unpatching transition test_klp_state: post_unpatch_callback: vmlinux test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel livepatch: 'test_klp_state': unpatching complete % rmmod test_klp_state % modprobe test_klp_state livepatch: enabling patch 'test_klp_state' livepatch: 'test_klp_state': initializing patching transition test_klp_state: pre_patch_callback: vmlinux test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel livepatch: 'test_klp_state': starting patching transition livepatch: 'test_klp_state': completing patching transition test_klp_state: post_patch_callback: vmlinux test_klp_state: fix_console_loglevel: fixing console_loglevel livepatch: 'test_klp_state': patching complete % modprobe test_klp_state2 livepatch: enabling patch 'test_klp_state2' livepatch: 'test_klp_state2': initializing patching transition test_klp_state2: pre_patch_callback: vmlinux test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated livepatch: 'test_klp_state2': starting patching transition livepatch: 'test_klp_state2': completing patching transition test_klp_state2: post_patch_callback: vmlinux test_klp_state2: fix_console_loglevel: taking over the console_loglevel change livepatch: 'test_klp_state2': patching complete % rmmod test_klp_state % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled livepatch: 'test_klp_state2': initializing unpatching transition test_klp_state2: pre_unpatch_callback: vmlinux test_klp_state2: restore_console_loglevel: restoring console_loglevel livepatch: 'test_klp_state2': starting unpatching transition livepatch: 'test_klp_state2': completing unpatching transition test_klp_state2: post_unpatch_callback: vmlinux test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel livepatch: 'test_klp_state2': unpatching complete % rmmod test_klp_state2 % modprobe test_klp_state2 livepatch: enabling patch 'test_klp_state2' livepatch: 'test_klp_state2': initializing patching transition test_klp_state2: pre_patch_callback: vmlinux test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel livepatch: 'test_klp_state2': starting patching transition livepatch: 'test_klp_state2': completing patching transition test_klp_state2: post_patch_callback: vmlinux test_klp_state2: fix_console_loglevel: fixing console_loglevel livepatch: 'test_klp_state2': patching complete % modprobe test_klp_state3 livepatch: enabling patch 'test_klp_state3' livepatch: 'test_klp_state3': initializing patching transition test_klp_state3: pre_patch_callback: vmlinux test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated livepatch: 'test_klp_state3': starting patching transition livepatch: 'test_klp_state3': completing patching transition test_klp_state3: post_patch_callback: vmlinux test_klp_state3: fix_console_loglevel: taking over the console_loglevel change livepatch: 'test_klp_state3': patching complete % rmmod test_klp_state2 % modprobe test_klp_state2 livepatch: enabling patch 'test_klp_state2' livepatch: 'test_klp_state2': initializing patching transition test_klp_state2: pre_patch_callback: vmlinux test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated livepatch: 'test_klp_state2': starting patching transition livepatch: 'test_klp_state2': completing patching transition test_klp_state2: post_patch_callback: vmlinux test_klp_state2: fix_console_loglevel: taking over the console_loglevel change livepatch: 'test_klp_state2': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled livepatch: 'test_klp_state2': initializing unpatching transition test_klp_state2: pre_unpatch_callback: vmlinux test_klp_state2: restore_console_loglevel: restoring console_loglevel livepatch: 'test_klp_state2': starting unpatching transition livepatch: 'test_klp_state2': completing unpatching transition test_klp_state2: post_unpatch_callback: vmlinux test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel livepatch: 'test_klp_state2': unpatching complete % rmmod test_klp_state2 % rmmod test_klp_state3 % modprobe test_klp_state2 livepatch: enabling patch 'test_klp_state2' livepatch: 'test_klp_state2': initializing patching transition test_klp_state2: pre_patch_callback: vmlinux test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel livepatch: 'test_klp_state2': starting patching transition livepatch: 'test_klp_state2': completing patching transition test_klp_state2: post_patch_callback: vmlinux test_klp_state2: fix_console_loglevel: fixing console_loglevel livepatch: 'test_klp_state2': patching complete % modprobe test_klp_state livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. modprobe: ERROR: could not insert 'test_klp_state': Invalid argument % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled livepatch: 'test_klp_state2': initializing unpatching transition test_klp_state2: pre_unpatch_callback: vmlinux test_klp_state2: restore_console_loglevel: restoring console_loglevel livepatch: 'test_klp_state2': starting unpatching transition livepatch: 'test_klp_state2': completing unpatching transition test_klp_state2: post_unpatch_callback: vmlinux test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel livepatch: 'test_klp_state2': unpatching complete % rmmod test_klp_state2 livepatch: kernel.ftrace_enabled = 1 livepatch: kernel.ftrace_enabled = 0 % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) livepatch: failed to patch object 'vmlinux' livepatch: failed to enable patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete test_klp_livepatch: this has been live patched % modprobe test_klp_atomic_replace replace=0 livepatch: enabling patch 'test_klp_atomic_replace' livepatch: 'test_klp_atomic_replace': initializing patching transition livepatch: 'test_klp_atomic_replace': starting patching transition livepatch: 'test_klp_atomic_replace': completing patching transition livepatch: 'test_klp_atomic_replace': patching complete test_klp_livepatch: this has been live patched test_klp_atomic_replace: this has been live patched % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled livepatch: 'test_klp_atomic_replace': initializing unpatching transition livepatch: 'test_klp_atomic_replace': starting unpatching transition livepatch: 'test_klp_atomic_replace': completing unpatching transition livepatch: 'test_klp_atomic_replace': unpatching complete % rmmod test_klp_atomic_replace test_klp_livepatch: this has been live patched % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled livepatch: 'test_klp_livepatch': initializing unpatching transition livepatch: 'test_klp_livepatch': starting unpatching transition livepatch: 'test_klp_livepatch': completing unpatching transition livepatch: 'test_klp_livepatch': unpatching complete % rmmod test_klp_livepatch % modprobe test_klp_livepatch livepatch: enabling patch 'test_klp_livepatch' livepatch: 'test_klp_livepatch': initializing patching transition livepatch: 'test_klp_livepatch': starting patching transition livepatch: 'test_klp_livepatch': completing patching transition livepatch: 'test_klp_livepatch': patching complete test_klp_livepatch: this has been live patched % modprobe test_klp_atomic_replace replace=1 livepatch: enabling patch 'test_klp_atomic_replace' livepatch: 'test_klp_atomic_replace': initializing patching transition livepatch: 'test_klp_atomic_replace': starting patching transition livepatch: 'test_klp_atomic_replace': completing patching transition livepatch: 'test_klp_atomic_replace': patching complete test_klp_atomic_replace: this has been live patched % rmmod test_klp_livepatch test_klp_atomic_replace: this has been live patched % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled livepatch: 'test_klp_atomic_replace': initializing unpatching transition livepatch: 'test_klp_atomic_replace': starting unpatching transition livepatch: 'test_klp_atomic_replace': completing unpatching transition livepatch: 'test_klp_atomic_replace': unpatching complete % rmmod test_klp_atomic_replace livepatch: kernel.ftrace_enabled = 1 % modprobe test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_init % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit % modprobe test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_init % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state livepatch: 'test_klp_callbacks_demo': patching complete % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % modprobe test_klp_callbacks_mod livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init test_klp_callbacks_mod: test_klp_callbacks_mod_init % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % modprobe test_klp_callbacks_demo livepatch: enabling patch 'test_klp_callbacks_demo' livepatch: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting patching transition livepatch: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition livepatch: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo [ 91.923385] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 91.923387] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 91.923388] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 91.923389] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 91.923403] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 91.923404] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 91.923405] test_klp_shadow_vars: got expected NULL result [ 91.923406] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 91.923408] test_klp_shadow_vars: got expected NULL result [ 91.923408] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 91.923410] test_klp_shadow_vars: got expected NULL result [ 91.924707] % rmmod test_klp_shadow_vars [ 92.043422] livepatch: kernel.ftrace_enabled = 1 [ 92.049886] ===== TEST: system state modification ===== [ 92.053102] % modprobe test_klp_state [ 92.054575] livepatch: enabling patch 'test_klp_state' [ 92.054577] livepatch: 'test_klp_state': initializing patching transition [ 92.054599] test_klp_state: pre_patch_callback: vmlinux [ 92.054600] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 92.054601] livepatch: 'test_klp_state': starting patching transition [ 92.911051] livepatch: 'test_klp_state': completing patching transition [ 92.911154] test_klp_state: post_patch_callback: vmlinux [ 92.911156] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 92.911157] livepatch: 'test_klp_state': patching complete [ 92.971706] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 92.971726] livepatch: 'test_klp_state': initializing unpatching transition [ 92.971748] test_klp_state: pre_unpatch_callback: vmlinux [ 92.971749] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 92.971750] livepatch: 'test_klp_state': starting unpatching transition [ 94.751032] livepatch: 'test_klp_state': completing unpatching transition [ 94.751134] test_klp_state: post_unpatch_callback: vmlinux [ 94.751136] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 94.751137] livepatch: 'test_klp_state': unpatching complete [ 94.788056] % rmmod test_klp_state [ 94.845476] ===== TEST: taking over system state modification ===== [ 94.848473] % modprobe test_klp_state [ 94.849942] livepatch: enabling patch 'test_klp_state' [ 94.849944] livepatch: 'test_klp_state': initializing patching transition [ 94.849964] test_klp_state: pre_patch_callback: vmlinux [ 94.849965] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 94.849966] livepatch: 'test_klp_state': starting patching transition [ 95.711025] livepatch: 'test_klp_state': completing patching transition [ 95.711177] test_klp_state: post_patch_callback: vmlinux [ 95.711179] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 95.711180] livepatch: 'test_klp_state': patching complete [ 95.770236] % modprobe test_klp_state2 [ 95.771616] livepatch: enabling patch 'test_klp_state2' [ 95.771618] livepatch: 'test_klp_state2': initializing patching transition [ 95.771638] test_klp_state2: pre_patch_callback: vmlinux [ 95.771639] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 95.771641] livepatch: 'test_klp_state2': starting patching transition [ 97.081037] livepatch: 'test_klp_state2': completing patching transition [ 97.081197] test_klp_state2: post_patch_callback: vmlinux [ 97.081198] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 97.081199] livepatch: 'test_klp_state2': patching complete [ 97.096083] % rmmod test_klp_state [ 97.140728] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 97.140747] livepatch: 'test_klp_state2': initializing unpatching transition [ 97.140768] test_klp_state2: pre_unpatch_callback: vmlinux [ 97.140769] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 97.140770] livepatch: 'test_klp_state2': starting unpatching transition [ 98.671037] livepatch: 'test_klp_state2': completing unpatching transition [ 98.671175] test_klp_state2: post_unpatch_callback: vmlinux [ 98.671177] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 98.671179] livepatch: 'test_klp_state2': unpatching complete [ 98.755809] % rmmod test_klp_state2 [ 98.815472] ===== TEST: compatible cumulative livepatches ===== [ 98.818642] % modprobe test_klp_state2 [ 98.820299] livepatch: enabling patch 'test_klp_state2' [ 98.820301] livepatch: 'test_klp_state2': initializing patching transition [ 98.820328] test_klp_state2: pre_patch_callback: vmlinux [ 98.820330] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 98.820331] livepatch: 'test_klp_state2': starting patching transition [ 100.031067] livepatch: 'test_klp_state2': completing patching transition [ 100.031184] test_klp_state2: post_patch_callback: vmlinux [ 100.031185] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 100.031187] livepatch: 'test_klp_state2': patching complete [ 100.045573] % modprobe test_klp_state3 [ 100.047069] livepatch: enabling patch 'test_klp_state3' [ 100.047072] livepatch: 'test_klp_state3': initializing patching transition [ 100.047093] test_klp_state3: pre_patch_callback: vmlinux [ 100.047094] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 100.047095] livepatch: 'test_klp_state3': starting patching transition [ 101.711037] livepatch: 'test_klp_state3': completing patching transition [ 101.711204] test_klp_state3: post_patch_callback: vmlinux [ 101.711206] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 101.711207] livepatch: 'test_klp_state3': patching complete [ 101.778205] % rmmod test_klp_state2 [ 101.853923] % modprobe test_klp_state2 [ 101.855447] livepatch: enabling patch 'test_klp_state2' [ 101.855449] livepatch: 'test_klp_state2': initializing patching transition [ 101.855470] test_klp_state2: pre_patch_callback: vmlinux [ 101.855472] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 101.855473] livepatch: 'test_klp_state2': starting patching transition [ 103.630965] livepatch: 'test_klp_state2': completing patching transition [ 103.631070] test_klp_state2: post_patch_callback: vmlinux [ 103.631071] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 103.631073] livepatch: 'test_klp_state2': patching complete [ 103.686892] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 103.686911] livepatch: 'test_klp_state2': initializing unpatching transition [ 103.686932] test_klp_state2: pre_unpatch_callback: vmlinux [ 103.686933] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 103.686935] livepatch: 'test_klp_state2': starting unpatching transition [ 105.150996] livepatch: 'test_klp_state2': completing unpatching transition [ 105.151097] test_klp_state2: post_unpatch_callback: vmlinux [ 105.151099] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 105.151100] livepatch: 'test_klp_state2': unpatching complete [ 105.199966] % rmmod test_klp_state2 [ 105.281410] % rmmod test_klp_state3 [ 105.355459] ===== TEST: incompatible cumulative livepatches ===== [ 105.358650] % modprobe test_klp_state2 [ 105.360034] livepatch: enabling patch 'test_klp_state2' [ 105.360035] livepatch: 'test_klp_state2': initializing patching transition [ 105.360056] test_klp_state2: pre_patch_callback: vmlinux [ 105.360057] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 105.360058] livepatch: 'test_klp_state2': starting patching transition [ 107.071045] livepatch: 'test_klp_state2': completing patching transition [ 107.071145] test_klp_state2: post_patch_callback: vmlinux [ 107.071147] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 107.071148] livepatch: 'test_klp_state2': patching complete [ 107.087110] % modprobe test_klp_state [ 107.088695] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 107.190677] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 107.190716] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 107.190734] livepatch: 'test_klp_state2': initializing unpatching transition [ 107.190753] test_klp_state2: pre_unpatch_callback: vmlinux [ 107.190754] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 107.190755] livepatch: 'test_klp_state2': starting unpatching transition [ 108.111015] livepatch: 'test_klp_state2': completing unpatching transition [ 108.111118] test_klp_state2: post_unpatch_callback: vmlinux [ 108.111120] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 108.111121] livepatch: 'test_klp_state2': unpatching complete [ 108.200035] % rmmod test_klp_state2 [ 108.301787] livepatch: kernel.ftrace_enabled = 1 [ 108.308056] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 108.309828] livepatch: kernel.ftrace_enabled = 0 [ 108.309890] % modprobe test_klp_livepatch [ 108.311242] livepatch: enabling patch 'test_klp_livepatch' [ 108.311244] livepatch: 'test_klp_livepatch': initializing patching transition [ 108.311267] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 108.311270] livepatch: failed to patch object 'vmlinux' [ 108.311271] livepatch: failed to enable patch 'test_klp_livepatch' [ 108.311272] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 108.311273] livepatch: 'test_klp_livepatch': completing unpatching transition [ 108.311382] livepatch: 'test_klp_livepatch': unpatching complete [ 108.500681] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 108.502529] livepatch: kernel.ftrace_enabled = 1 [ 108.505528] % modprobe test_klp_livepatch [ 108.506881] livepatch: enabling patch 'test_klp_livepatch' [ 108.506882] livepatch: 'test_klp_livepatch': initializing patching transition [ 108.508030] livepatch: 'test_klp_livepatch': starting patching transition [ 109.790992] livepatch: 'test_klp_livepatch': completing patching transition [ 109.791146] livepatch: 'test_klp_livepatch': patching complete [ 109.834645] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 109.835658] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 109.835676] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 109.835692] livepatch: 'test_klp_livepatch': starting unpatching transition [ 110.831016] livepatch: 'test_klp_livepatch': completing unpatching transition [ 110.832521] livepatch: 'test_klp_livepatch': unpatching complete [ 110.845082] % rmmod test_klp_livepatch [ 110.962324] livepatch: kernel.ftrace_enabled = 1 [ 110.969070] ===== TEST: sysfs test ===== [ 110.972147] % modprobe test_klp_livepatch [ 110.973575] livepatch: enabling patch 'test_klp_livepatch' [ 110.973578] livepatch: 'test_klp_livepatch': initializing patching transition [ 110.974676] livepatch: 'test_klp_livepatch': starting patching transition [ 112.671034] livepatch: 'test_klp_livepatch': completing patching transition [ 112.671137] livepatch: 'test_klp_livepatch': patching complete [ 112.711815] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 112.711832] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 112.711853] livepatch: 'test_klp_livepatch': starting unpatching transition [ 113.711046] livepatch: 'test_klp_livepatch': completing unpatching transition [ 113.712556] livepatch: 'test_klp_livepatch': unpatching complete [ 113.721666] % rmmod test_klp_livepatch [ 113.786348] ===== TEST: sysfs test object/patched ===== [ 113.789508] % modprobe test_klp_callbacks_demo [ 113.791059] livepatch: enabling patch 'test_klp_callbacks_demo' [ 113.791061] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 113.791082] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 113.791083] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 114.831046] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 114.831155] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 114.831157] livepatch: 'test_klp_callbacks_demo': patching complete [ 114.915700] % modprobe test_klp_callbacks_mod [ 114.917199] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 114.917201] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 114.917203] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 114.917220] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 114.919407] % rmmod test_klp_callbacks_mod [ 114.920563] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 114.920578] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 114.920580] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 114.920582] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 114.991648] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 114.991667] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 114.991690] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 114.991692] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 116.671055] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 116.671159] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 116.671177] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 116.706610] % rmmod test_klp_callbacks_demo [ 116.853345] livepatch: kernel.ftrace_enabled = 1 [ 116.860222] ===== TEST: basic function patching ===== [ 116.863329] % modprobe test_klp_livepatch [ 116.864936] livepatch: enabling patch 'test_klp_livepatch' [ 116.864938] livepatch: 'test_klp_livepatch': initializing patching transition [ 116.866224] livepatch: 'test_klp_livepatch': starting patching transition [ 117.791071] livepatch: 'test_klp_livepatch': completing patching transition [ 117.791193] livepatch: 'test_klp_livepatch': patching complete [ 117.885360] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 117.885397] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 117.885424] livepatch: 'test_klp_livepatch': starting unpatching transition [ 118.750980] livepatch: 'test_klp_livepatch': completing unpatching transition [ 118.752543] livepatch: 'test_klp_livepatch': unpatching complete [ 118.794530] % rmmod test_klp_livepatch [ 118.897157] ===== TEST: multiple livepatches ===== [ 118.900009] % modprobe test_klp_livepatch [ 118.901338] livepatch: enabling patch 'test_klp_livepatch' [ 118.901341] livepatch: 'test_klp_livepatch': initializing patching transition [ 118.902413] livepatch: 'test_klp_livepatch': starting patching transition [ 119.711012] livepatch: 'test_klp_livepatch': completing patching transition [ 119.711114] livepatch: 'test_klp_livepatch': patching complete [ 119.718796] test_klp_livepatch: this has been live patched [ 119.723001] % modprobe test_klp_atomic_replace replace=0 [ 119.724612] livepatch: enabling patch 'test_klp_atomic_replace' [ 119.724614] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 119.725833] livepatch: 'test_klp_atomic_replace': starting patching transition [ 120.751022] livepatch: 'test_klp_atomic_replace': completing patching transition [ 120.751130] livepatch: 'test_klp_atomic_replace': patching complete [ 120.847005] test_klp_livepatch: this has been live patched [ 120.847986] test_klp_atomic_replace: this has been live patched [ 120.848118] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 120.848138] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 120.848158] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 121.710988] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 121.712378] livepatch: 'test_klp_atomic_replace': unpatching complete [ 121.757104] % rmmod test_klp_atomic_replace [ 121.801514] test_klp_livepatch: this has been live patched [ 121.802520] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 121.802538] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 121.802554] livepatch: 'test_klp_livepatch': starting unpatching transition [ 122.761006] livepatch: 'test_klp_livepatch': completing unpatching transition [ 122.762405] livepatch: 'test_klp_livepatch': unpatching complete [ 122.812386] % rmmod test_klp_livepatch [ 122.888229] ===== TEST: atomic replace livepatch ===== [ 122.891365] % modprobe test_klp_livepatch [ 122.892757] livepatch: enabling patch 'test_klp_livepatch' [ 122.892759] livepatch: 'test_klp_livepatch': initializing patching transition [ 122.893900] livepatch: 'test_klp_livepatch': starting patching transition [ 123.871073] livepatch: 'test_klp_livepatch': completing patching transition [ 123.871179] livepatch: 'test_klp_livepatch': patching complete [ 123.913201] test_klp_livepatch: this has been live patched [ 123.917508] % modprobe test_klp_atomic_replace replace=1 [ 123.918994] livepatch: enabling patch 'test_klp_atomic_replace' [ 123.918996] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 123.920106] livepatch: 'test_klp_atomic_replace': starting patching transition [ 124.751016] livepatch: 'test_klp_atomic_replace': completing patching transition [ 124.752390] livepatch: 'test_klp_atomic_replace': patching complete [ 124.838483] test_klp_atomic_replace: this has been live patched [ 124.839576] % rmmod test_klp_livepatch [ 124.892319] test_klp_atomic_replace: this has been live patched [ 124.892494] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 124.892513] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 124.892529] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 125.711010] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 125.712510] livepatch: 'test_klp_atomic_replace': unpatching complete [ 125.801651] % rmmod test_klp_atomic_replace [ 125.905407] livepatch: kernel.ftrace_enabled = 1 [ 125.912644] ===== TEST: target module before livepatch ===== [ 125.915835] % modprobe test_klp_callbacks_mod [ 125.917236] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 125.920790] % modprobe test_klp_callbacks_demo [ 125.922345] livepatch: enabling patch 'test_klp_callbacks_demo' [ 125.922347] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 125.922366] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 125.922367] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 125.922369] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 127.711053] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 127.711189] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 127.711191] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 127.711193] livepatch: 'test_klp_callbacks_demo': patching complete [ 127.755072] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 127.755091] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 127.755106] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 127.755107] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 127.755109] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 128.671068] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 128.671171] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 128.671172] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 128.671174] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 128.765224] % rmmod test_klp_callbacks_demo [ 128.811614] % rmmod test_klp_callbacks_mod [ 128.812787] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 128.887174] ===== TEST: module_coming notifier ===== [ 128.890422] % modprobe test_klp_callbacks_demo [ 128.892042] livepatch: enabling patch 'test_klp_callbacks_demo' [ 128.892045] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 128.892067] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 128.892068] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 129.791064] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 129.791173] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 129.791175] livepatch: 'test_klp_callbacks_demo': patching complete [ 129.812482] % modprobe test_klp_callbacks_mod [ 129.813968] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 129.813971] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 129.813973] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 129.813990] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 129.814364] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 129.814383] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 129.814404] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 129.814405] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 129.814407] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 130.671041] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 130.671174] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 130.671176] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 130.671178] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 130.723905] % rmmod test_klp_callbacks_demo [ 130.771625] % rmmod test_klp_callbacks_mod [ 130.772641] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 130.826909] ===== TEST: module_going notifier ===== [ 130.830202] % modprobe test_klp_callbacks_mod [ 130.831538] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 130.834984] % modprobe test_klp_callbacks_demo [ 130.836549] livepatch: enabling patch 'test_klp_callbacks_demo' [ 130.836552] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 130.836573] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 130.836574] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 130.836576] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 131.710974] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 131.711075] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 131.711077] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 131.711079] livepatch: 'test_klp_callbacks_demo': patching complete [ 131.754244] % rmmod test_klp_callbacks_mod [ 131.755454] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 131.755471] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 131.755473] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 131.755475] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 131.800736] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 131.800754] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 131.800775] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 131.800776] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 133.071027] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 133.071132] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 133.071134] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 133.113297] % rmmod test_klp_callbacks_demo [ 133.177434] ===== TEST: module_coming and module_going notifiers ===== [ 133.180622] % modprobe test_klp_callbacks_demo [ 133.182228] livepatch: enabling patch 'test_klp_callbacks_demo' [ 133.182231] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 133.182251] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 133.182252] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 134.751073] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 134.751184] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 134.751187] livepatch: 'test_klp_callbacks_demo': patching complete [ 134.813811] % modprobe test_klp_callbacks_mod [ 134.815280] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 134.815282] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 134.815284] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 134.815302] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 134.816526] % rmmod test_klp_callbacks_mod [ 134.817758] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 134.817773] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 134.817775] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 134.817776] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 134.940787] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 134.940806] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 134.940828] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 134.940829] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 135.950967] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 135.951069] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 135.951071] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 136.051536] % rmmod test_klp_callbacks_demo [ 136.117597] ===== TEST: target module not present ===== [ 136.120836] % modprobe test_klp_callbacks_demo [ 136.122441] livepatch: enabling patch 'test_klp_callbacks_demo' [ 136.122444] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 136.122476] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 136.122477] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 137.871054] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 137.871179] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 137.871181] livepatch: 'test_klp_callbacks_demo': patching complete [ 137.952610] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 137.952631] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 137.952666] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 137.952668] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 139.071051] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 139.071152] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 139.071154] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 139.164250] % rmmod test_klp_callbacks_demo [ 139.257782] ===== TEST: pre-patch callback -ENODEV ===== [ 139.260610] % modprobe test_klp_callbacks_mod [ 139.261932] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 139.262266] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 139.263690] livepatch: enabling patch 'test_klp_callbacks_demo' [ 139.263692] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 139.263711] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 139.263712] livepatch: pre-patch callback failed for object 'vmlinux' [ 139.263713] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 139.263714] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 139.263715] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 139.263820] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 139.410666] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 139.411683] % rmmod test_klp_callbacks_mod [ 139.412838] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 139.477858] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 139.480794] % modprobe test_klp_callbacks_demo [ 139.482279] livepatch: enabling patch 'test_klp_callbacks_demo' [ 139.482282] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 139.482303] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 139.482304] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 140.831122] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 140.831279] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 140.831281] livepatch: 'test_klp_callbacks_demo': patching complete [ 140.908032] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 140.908963] % modprobe test_klp_callbacks_mod [ 140.910243] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 140.910246] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 140.910248] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 140.910249] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 141.030671] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 141.030722] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 141.030738] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 141.030776] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 141.030777] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 141.789613] crw_info : CRW reports slct=0, oflw=0, chn=0, rsc=B, anc=0, erc=0, rsid=0 [ 142.031077] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 142.031196] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 142.031198] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 142.041387] % rmmod test_klp_callbacks_demo [ 142.108391] ===== TEST: multiple target modules ===== [ 142.111495] % modprobe test_klp_callbacks_busy block_transition=N [ 142.112950] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 142.112954] test_klp_callbacks_busy: busymod_work_func enter [ 142.112956] test_klp_callbacks_busy: busymod_work_func exit [ 142.116379] % modprobe test_klp_callbacks_demo [ 142.117801] livepatch: enabling patch 'test_klp_callbacks_demo' [ 142.117802] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 142.117840] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 142.117841] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 142.119215] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 143.070935] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 143.071035] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 143.071037] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 143.071039] livepatch: 'test_klp_callbacks_demo': patching complete [ 143.141657] % modprobe test_klp_callbacks_mod [ 143.143195] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 143.143198] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 143.143200] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 143.143236] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 143.144563] % rmmod test_klp_callbacks_mod [ 143.145857] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 143.145873] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 143.145875] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 143.145876] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 143.220815] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 143.220851] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 143.220872] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 143.220873] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 143.220875] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 144.031007] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 144.032819] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 144.032821] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 144.032822] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 144.130433] % rmmod test_klp_callbacks_demo [ 144.211697] % rmmod test_klp_callbacks_busy [ 144.213003] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 144.308603] ===== TEST: busy target module ===== [ 144.311786] % modprobe test_klp_callbacks_busy block_transition=Y [ 144.313186] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 144.313190] test_klp_callbacks_busy: busymod_work_func enter [ 144.316644] % modprobe test_klp_callbacks_demo [ 144.318094] livepatch: enabling patch 'test_klp_callbacks_demo' [ 144.318095] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 144.318115] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 144.318116] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 144.319516] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 144.324787] % modprobe test_klp_callbacks_mod [ 144.326157] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 144.326159] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 144.326174] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 144.327454] % rmmod test_klp_callbacks_mod [ 144.328546] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 144.328561] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 144.328563] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 144.410842] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 144.410861] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 144.410966] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 146.990932] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 146.992683] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 146.992685] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 146.992687] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 147.033638] % rmmod test_klp_callbacks_demo [ 147.121645] % rmmod test_klp_callbacks_busy [ 147.130314] test_klp_callbacks_busy: busymod_work_func exit [ 147.130323] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 147.208177] ===== TEST: multiple livepatches ===== [ 147.211079] % modprobe test_klp_callbacks_demo [ 147.212707] livepatch: enabling patch 'test_klp_callbacks_demo' [ 147.212710] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 147.212730] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 147.212731] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 148.031059] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 148.031160] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 148.031162] livepatch: 'test_klp_callbacks_demo': patching complete [ 148.132098] % modprobe test_klp_callbacks_demo2 [ 148.133641] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 148.133644] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 148.133664] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 148.133666] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 149.151067] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 149.151184] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 149.151186] livepatch: 'test_klp_callbacks_demo2': patching complete [ 149.152975] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 149.152995] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 149.153015] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 149.153016] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 149.951022] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 149.951125] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 149.951127] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 149.960854] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 149.960873] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 149.960888] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 149.960890] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 150.991050] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 150.991152] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 150.991154] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 151.071631] % rmmod test_klp_callbacks_demo2 [ 151.131726] % rmmod test_klp_callbacks_demo [ 151.229250] ===== TEST: atomic replace ===== [ 151.232455] % modprobe test_klp_callbacks_demo [ 151.234085] livepatch: enabling patch 'test_klp_callbacks_demo' [ 151.234087] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 151.234107] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 151.234108] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 152.031077] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 152.031231] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 152.031233] livepatch: 'test_klp_callbacks_demo': patching complete [ 152.052914] % modprobe test_klp_callbacks_demo2 replace=1 [ 152.054593] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 152.054595] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 152.054616] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 152.054618] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 153.071103] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 153.071224] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 153.071226] livepatch: 'test_klp_callbacks_demo2': patching complete [ 153.073798] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 153.073819] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 153.073840] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 153.073841] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 154.031008] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 154.031113] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 154.031116] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 154.084458] % rmmod test_klp_callbacks_demo2 [ 154.161744] % rmmod test_klp_callbacks_demo [ 154.245192] livepatch: kernel.ftrace_enabled = 1 [ 154.253557] ===== TEST: basic shadow variable API ===== [ 154.256693] % modprobe test_klp_shadow_vars [ 154.258215] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 154.258218] test_klp_shadow_vars: got expected NULL result [ 154.258220] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 154.258221] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 154.258224] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 154.258226] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 154.258228] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 154.258229] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 154.258232] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 154.258233] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 154.258235] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 154.258236] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 154.258239] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 154.258240] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 154.258242] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 154.258243] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 154.258244] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 154.258246] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 154.258268] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 154.258269] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 154.258270] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 154.258271] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 154.258273] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 154.258274] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 154.258275] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 154.258276] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 154.258278] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 154.258280] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 154.258281] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 154.258283] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 154.258284] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 154.258286] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 154.258287] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 154.258289] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 154.258290] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 154.258292] test_klp_shadow_vars: got expected NULL result [ 154.258292] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 154.258294] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 154.258295] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 154.258297] test_klp_shadow_vars: got expected NULL result [ 154.258297] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 154.258299] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 154.258300] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 154.258301] test_klp_shadow_vars: got expected NULL result [ 154.258302] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 154.258303] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 154.258304] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 154.258306] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 154.258307] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 154.258308] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 154.258317] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 154.258318] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 154.258319] test_klp_shadow_vars: got expected NULL result [ 154.258320] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 154.258321] test_klp_shadow_vars: got expected NULL result [ 154.258322] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 154.258323] test_klp_shadow_vars: got expected NULL result [ 154.259549] % rmmod test_klp_shadow_vars [ 154.364539] livepatch: kernel.ftrace_enabled = 1 [ 154.373051] ===== TEST: system state modification ===== [ 154.376288] % modprobe test_klp_state [ 154.377808] livepatch: enabling patch 'test_klp_state' [ 154.377810] livepatch: 'test_klp_state': initializing patching transition [ 154.377832] test_klp_state: pre_patch_callback: vmlinux [ 154.377833] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 154.377834] livepatch: 'test_klp_state': starting patching transition [ 155.951098] livepatch: 'test_klp_state': completing patching transition [ 155.951196] test_klp_state: post_patch_callback: vmlinux [ 155.951198] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 155.951199] livepatch: 'test_klp_state': patching complete [ 156.005967] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 156.005986] livepatch: 'test_klp_state': initializing unpatching transition [ 156.006003] test_klp_state: pre_unpatch_callback: vmlinux [ 156.006004] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 156.006005] livepatch: 'test_klp_state': starting unpatching transition [ 156.991099] livepatch: 'test_klp_state': completing unpatching transition [ 156.991197] test_klp_state: post_unpatch_callback: vmlinux [ 156.991199] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 156.991201] livepatch: 'test_klp_state': unpatching complete [ 157.016096] % rmmod test_klp_state [ 157.119439] ===== TEST: taking over system state modification ===== [ 157.122658] % modprobe test_klp_state [ 157.124299] livepatch: enabling patch 'test_klp_state' [ 157.124302] livepatch: 'test_klp_state': initializing patching transition [ 157.124324] test_klp_state: pre_patch_callback: vmlinux [ 157.124325] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 157.124326] livepatch: 'test_klp_state': starting patching transition [ 158.031004] livepatch: 'test_klp_state': completing patching transition [ 158.031105] test_klp_state: post_patch_callback: vmlinux [ 158.031107] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 158.031109] livepatch: 'test_klp_state': patching complete [ 158.044647] % modprobe test_klp_state2 [ 158.046174] livepatch: enabling patch 'test_klp_state2' [ 158.046176] livepatch: 'test_klp_state2': initializing patching transition [ 158.046194] test_klp_state2: pre_patch_callback: vmlinux [ 158.046195] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 158.046197] livepatch: 'test_klp_state2': starting patching transition [ 158.991060] livepatch: 'test_klp_state2': completing patching transition [ 158.991184] test_klp_state2: post_patch_callback: vmlinux [ 158.991185] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 158.991186] livepatch: 'test_klp_state2': patching complete [ 159.065518] % rmmod test_klp_state [ 159.130779] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 159.130797] livepatch: 'test_klp_state2': initializing unpatching transition [ 159.130818] test_klp_state2: pre_unpatch_callback: vmlinux [ 159.130819] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 159.130820] livepatch: 'test_klp_state2': starting unpatching transition [ 160.911085] livepatch: 'test_klp_state2': completing unpatching transition [ 160.911224] test_klp_state2: post_unpatch_callback: vmlinux [ 160.911226] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 160.911227] livepatch: 'test_klp_state2': unpatching complete [ 160.948036] % rmmod test_klp_state2 [ 161.059424] ===== TEST: compatible cumulative livepatches ===== [ 161.062474] % modprobe test_klp_state2 [ 161.063931] livepatch: enabling patch 'test_klp_state2' [ 161.063934] livepatch: 'test_klp_state2': initializing patching transition [ 161.063957] test_klp_state2: pre_patch_callback: vmlinux [ 161.063958] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 161.063959] livepatch: 'test_klp_state2': starting patching transition [ 162.671079] livepatch: 'test_klp_state2': completing patching transition [ 162.671184] test_klp_state2: post_patch_callback: vmlinux [ 162.671186] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 162.671188] livepatch: 'test_klp_state2': patching complete [ 162.694355] % modprobe test_klp_state3 [ 162.695852] livepatch: enabling patch 'test_klp_state3' [ 162.695855] livepatch: 'test_klp_state3': initializing patching transition [ 162.695877] test_klp_state3: pre_patch_callback: vmlinux [ 162.695878] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 162.695879] livepatch: 'test_klp_state3': starting patching transition [ 163.951036] livepatch: 'test_klp_state3': completing patching transition [ 163.951139] test_klp_state3: post_patch_callback: vmlinux [ 163.951141] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 163.951142] livepatch: 'test_klp_state3': patching complete [ 164.019372] % rmmod test_klp_state2 [ 164.093821] % modprobe test_klp_state2 [ 164.095460] livepatch: enabling patch 'test_klp_state2' [ 164.095463] livepatch: 'test_klp_state2': initializing patching transition [ 164.095484] test_klp_state2: pre_patch_callback: vmlinux [ 164.095485] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 164.095487] livepatch: 'test_klp_state2': starting patching transition [ 165.871122] livepatch: 'test_klp_state2': completing patching transition [ 165.871280] test_klp_state2: post_patch_callback: vmlinux [ 165.871281] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 165.871283] livepatch: 'test_klp_state2': patching complete [ 165.926447] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 165.926486] livepatch: 'test_klp_state2': initializing unpatching transition [ 165.926507] test_klp_state2: pre_unpatch_callback: vmlinux [ 165.926508] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 165.926509] livepatch: 'test_klp_state2': starting unpatching transition [ 166.831076] livepatch: 'test_klp_state2': completing unpatching transition [ 166.831199] test_klp_state2: post_unpatch_callback: vmlinux [ 166.831201] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 166.831203] livepatch: 'test_klp_state2': unpatching complete [ 166.835243] % rmmod test_klp_state2 [ 166.901777] % rmmod test_klp_state3 [ 166.969742] ===== TEST: incompatible cumulative livepatches ===== [ 166.972899] % modprobe test_klp_state2 [ 166.974399] livepatch: enabling patch 'test_klp_state2' [ 166.974401] livepatch: 'test_klp_state2': initializing patching transition [ 166.974420] test_klp_state2: pre_patch_callback: vmlinux [ 166.974422] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 166.974423] livepatch: 'test_klp_state2': starting patching transition [ 168.681063] livepatch: 'test_klp_state2': completing patching transition [ 168.681165] test_klp_state2: post_patch_callback: vmlinux [ 168.681167] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 168.681169] livepatch: 'test_klp_state2': patching complete [ 168.703685] % modprobe test_klp_state [ 168.705124] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 168.860784] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 168.860833] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 168.860851] livepatch: 'test_klp_state2': initializing unpatching transition [ 168.860909] test_klp_state2: pre_unpatch_callback: vmlinux [ 168.860910] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 168.860911] livepatch: 'test_klp_state2': starting unpatching transition [ 169.871047] livepatch: 'test_klp_state2': completing unpatching transition [ 169.871186] test_klp_state2: post_unpatch_callback: vmlinux [ 169.871188] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 169.871189] livepatch: 'test_klp_state2': unpatching complete [ 169.971989] % rmmod test_klp_state2 [ 170.114423] livepatch: kernel.ftrace_enabled = 1 [ 170.122713] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 170.124491] livepatch: kernel.ftrace_enabled = 0 [ 170.124552] % modprobe test_klp_livepatch [ 170.125916] livepatch: enabling patch 'test_klp_livepatch' [ 170.125918] livepatch: 'test_klp_livepatch': initializing patching transition [ 170.125942] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 170.125945] livepatch: failed to patch object 'vmlinux' [ 170.125946] livepatch: failed to enable patch 'test_klp_livepatch' [ 170.125947] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 170.125948] livepatch: 'test_klp_livepatch': completing unpatching transition [ 170.126056] livepatch: 'test_klp_livepatch': unpatching complete [ 170.260823] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 170.262584] livepatch: kernel.ftrace_enabled = 1 [ 170.265470] % modprobe test_klp_livepatch [ 170.266711] livepatch: enabling patch 'test_klp_livepatch' [ 170.266712] livepatch: 'test_klp_livepatch': initializing patching transition [ 170.267782] livepatch: 'test_klp_livepatch': starting patching transition [ 171.791076] livepatch: 'test_klp_livepatch': completing patching transition [ 171.791226] livepatch: 'test_klp_livepatch': patching complete [ 171.797053] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 171.798001] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 171.798020] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 171.798035] livepatch: 'test_klp_livepatch': starting unpatching transition [ 172.831042] livepatch: 'test_klp_livepatch': completing unpatching transition [ 172.832563] livepatch: 'test_klp_livepatch': unpatching complete [ 172.908336] % rmmod test_klp_livepatch [ 172.983414] livepatch: kernel.ftrace_enabled = 1 [ 172.991780] ===== TEST: sysfs test ===== [ 172.994796] % modprobe test_klp_livepatch [ 172.996248] livepatch: enabling patch 'test_klp_livepatch' [ 172.996250] livepatch: 'test_klp_livepatch': initializing patching transition [ 172.997482] livepatch: 'test_klp_livepatch': starting patching transition [ 174.671056] livepatch: 'test_klp_livepatch': completing patching transition [ 174.671194] livepatch: 'test_klp_livepatch': patching complete [ 174.734417] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 174.734432] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 174.734466] livepatch: 'test_klp_livepatch': starting unpatching transition [ 175.711081] livepatch: 'test_klp_livepatch': completing unpatching transition [ 175.712575] livepatch: 'test_klp_livepatch': unpatching complete [ 175.744085] % rmmod test_klp_livepatch [ 175.808160] ===== TEST: sysfs test object/patched ===== [ 175.810980] % modprobe test_klp_callbacks_demo [ 175.812208] livepatch: enabling patch 'test_klp_callbacks_demo' [ 175.812210] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 175.812230] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 175.812231] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 176.911051] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 176.911161] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 176.911163] livepatch: 'test_klp_callbacks_demo': patching complete [ 176.934731] % modprobe test_klp_callbacks_mod [ 176.935992] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 176.935994] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 176.935996] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 176.936013] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 176.937945] % rmmod test_klp_callbacks_mod [ 176.938946] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 176.938961] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 176.938963] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 176.938964] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 176.991789] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 176.991808] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 176.991828] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 176.991830] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 178.191025] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 178.191124] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 178.191126] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 178.202777] % rmmod test_klp_callbacks_demo [ 178.318263] livepatch: kernel.ftrace_enabled = 1 [ 178.326039] ===== TEST: basic function patching ===== [ 178.328835] % modprobe test_klp_livepatch [ 178.330156] livepatch: enabling patch 'test_klp_livepatch' [ 178.330158] livepatch: 'test_klp_livepatch': initializing patching transition [ 178.331256] livepatch: 'test_klp_livepatch': starting patching transition [ 179.711061] livepatch: 'test_klp_livepatch': completing patching transition [ 179.711168] livepatch: 'test_klp_livepatch': patching complete [ 179.757176] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 179.757196] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 179.757219] livepatch: 'test_klp_livepatch': starting unpatching transition [ 180.751089] livepatch: 'test_klp_livepatch': completing unpatching transition [ 180.752537] livepatch: 'test_klp_livepatch': unpatching complete [ 180.767212] % rmmod test_klp_livepatch [ 180.830459] ===== TEST: multiple livepatches ===== [ 180.833537] % modprobe test_klp_livepatch [ 180.834932] livepatch: enabling patch 'test_klp_livepatch' [ 180.834933] livepatch: 'test_klp_livepatch': initializing patching transition [ 180.836072] livepatch: 'test_klp_livepatch': starting patching transition [ 181.711030] livepatch: 'test_klp_livepatch': completing patching transition [ 181.711129] livepatch: 'test_klp_livepatch': patching complete [ 181.753931] test_klp_livepatch: this has been live patched [ 181.758075] % modprobe test_klp_atomic_replace replace=0 [ 181.759630] livepatch: enabling patch 'test_klp_atomic_replace' [ 181.759632] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 181.760761] livepatch: 'test_klp_atomic_replace': starting patching transition [ 182.751097] livepatch: 'test_klp_atomic_replace': completing patching transition [ 182.751210] livepatch: 'test_klp_atomic_replace': patching complete [ 182.779987] test_klp_livepatch: this has been live patched [ 182.780949] test_klp_atomic_replace: this has been live patched [ 182.781132] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 182.781152] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 182.781172] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 183.711178] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 183.712627] livepatch: 'test_klp_atomic_replace': unpatching complete [ 183.791173] % rmmod test_klp_atomic_replace [ 183.881579] test_klp_livepatch: this has been live patched [ 183.882598] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 183.882616] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 183.882634] livepatch: 'test_klp_livepatch': starting unpatching transition [ 184.751183] livepatch: 'test_klp_livepatch': completing unpatching transition [ 184.752715] livepatch: 'test_klp_livepatch': unpatching complete [ 184.791884] % rmmod test_klp_livepatch [ 184.921013] ===== TEST: atomic replace livepatch ===== [ 184.924117] % modprobe test_klp_livepatch [ 184.925507] livepatch: enabling patch 'test_klp_livepatch' [ 184.925509] livepatch: 'test_klp_livepatch': initializing patching transition [ 184.926666] livepatch: 'test_klp_livepatch': starting patching transition [ 185.791155] livepatch: 'test_klp_livepatch': completing patching transition [ 185.791263] livepatch: 'test_klp_livepatch': patching complete [ 185.844460] test_klp_livepatch: this has been live patched [ 185.848202] % modprobe test_klp_atomic_replace replace=1 [ 185.849784] livepatch: enabling patch 'test_klp_atomic_replace' [ 185.849786] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 185.850899] livepatch: 'test_klp_atomic_replace': starting patching transition [ 186.751268] livepatch: 'test_klp_atomic_replace': completing patching transition [ 186.752724] livepatch: 'test_klp_atomic_replace': patching complete [ 186.769820] test_klp_atomic_replace: this has been live patched [ 186.771001] % rmmod test_klp_livepatch [ 186.842577] test_klp_atomic_replace: this has been live patched [ 186.842713] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 186.842732] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 186.842752] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 187.711155] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 187.712686] livepatch: 'test_klp_atomic_replace': unpatching complete [ 187.751949] % rmmod test_klp_atomic_replace [ 187.875356] livepatch: kernel.ftrace_enabled = 1 [ 187.883440] ===== TEST: target module before livepatch ===== [ 187.886603] % modprobe test_klp_callbacks_mod [ 187.887986] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 187.891200] % modprobe test_klp_callbacks_demo [ 187.892630] livepatch: enabling patch 'test_klp_callbacks_demo' [ 187.892632] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 187.892658] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 187.892659] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 187.892660] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 189.071175] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 189.071347] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 189.071350] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 189.071351] livepatch: 'test_klp_callbacks_demo': patching complete [ 189.113416] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 189.113437] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 189.113459] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 189.113460] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 189.113461] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 190.831161] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 190.831300] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 190.831303] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 190.831304] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 190.928590] % rmmod test_klp_callbacks_demo [ 190.981743] % rmmod test_klp_callbacks_mod [ 190.982844] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 191.068717] ===== TEST: module_coming notifier ===== [ 191.071881] % modprobe test_klp_callbacks_demo [ 191.073324] livepatch: enabling patch 'test_klp_callbacks_demo' [ 191.073326] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 191.073345] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 191.073347] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 192.761063] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 192.761166] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 192.761168] livepatch: 'test_klp_callbacks_demo': patching complete [ 192.804600] % modprobe test_klp_callbacks_mod [ 192.806035] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 192.806038] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 192.806040] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 192.806058] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 192.806411] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 192.806429] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 192.806450] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 192.806452] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 192.806453] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 193.951153] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 193.951254] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 193.951256] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 193.951257] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 194.016717] % rmmod test_klp_callbacks_demo [ 194.111640] % rmmod test_klp_callbacks_mod [ 194.112834] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 194.179536] ===== TEST: module_going notifier ===== [ 194.182529] % modprobe test_klp_callbacks_mod [ 194.183902] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 194.186979] % modprobe test_klp_callbacks_demo [ 194.188306] livepatch: enabling patch 'test_klp_callbacks_demo' [ 194.188308] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 194.188334] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 194.188336] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 194.188337] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 195.871146] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 195.871247] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 195.871248] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 195.871250] livepatch: 'test_klp_callbacks_demo': patching complete [ 195.917690] % rmmod test_klp_callbacks_mod [ 195.918839] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 195.918874] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 195.918876] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 195.918877] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 196.000811] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 196.000829] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 196.000847] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 196.000848] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 196.831134] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 196.831258] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 196.831276] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 196.909237] % rmmod test_klp_callbacks_demo [ 196.999252] ===== TEST: module_coming and module_going notifiers ===== [ 197.002219] % modprobe test_klp_callbacks_demo [ 197.003720] livepatch: enabling patch 'test_klp_callbacks_demo' [ 197.003722] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 197.003761] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 197.003762] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 197.951097] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 197.951197] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 197.951199] livepatch: 'test_klp_callbacks_demo': patching complete [ 198.023498] % modprobe test_klp_callbacks_mod [ 198.024865] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 198.024868] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 198.024870] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 198.024887] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 198.026043] % rmmod test_klp_callbacks_mod [ 198.027153] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 198.027169] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 198.027171] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 198.027172] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 198.110789] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 198.110807] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 198.110828] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 198.110830] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 199.881138] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 199.881237] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 199.881239] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 199.925505] % rmmod test_klp_callbacks_demo [ 199.999151] ===== TEST: target module not present ===== [ 200.002145] % modprobe test_klp_callbacks_demo [ 200.003699] livepatch: enabling patch 'test_klp_callbacks_demo' [ 200.003701] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 200.003721] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 200.003723] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 200.911124] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 200.911242] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 200.911244] livepatch: 'test_klp_callbacks_demo': patching complete [ 200.919249] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 200.919267] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 200.919288] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 200.919289] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 201.951160] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 201.951277] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 201.951279] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 202.028867] % rmmod test_klp_callbacks_demo [ 202.119054] ===== TEST: pre-patch callback -ENODEV ===== [ 202.122040] % modprobe test_klp_callbacks_mod [ 202.123508] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 202.123862] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 202.125317] livepatch: enabling patch 'test_klp_callbacks_demo' [ 202.125319] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 202.125341] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 202.125342] livepatch: pre-patch callback failed for object 'vmlinux' [ 202.125343] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 202.125344] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 202.125345] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 202.125496] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 202.250789] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 202.251582] % rmmod test_klp_callbacks_mod [ 202.252724] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 202.348771] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 202.351804] % modprobe test_klp_callbacks_demo [ 202.353355] livepatch: enabling patch 'test_klp_callbacks_demo' [ 202.353357] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 202.353392] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 202.353393] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 203.951197] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 203.951351] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 203.951353] livepatch: 'test_klp_callbacks_demo': patching complete [ 203.979670] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 203.980548] % modprobe test_klp_callbacks_mod [ 203.981920] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 203.981922] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 203.981924] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 203.981925] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 204.130800] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 204.130845] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 204.130862] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 204.130882] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 204.130884] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 205.951235] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 205.951341] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 205.951343] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 206.046975] % rmmod test_klp_callbacks_demo [ 206.128457] ===== TEST: multiple target modules ===== [ 206.131336] % modprobe test_klp_callbacks_busy block_transition=N [ 206.132672] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 206.132677] test_klp_callbacks_busy: busymod_work_func enter [ 206.132679] test_klp_callbacks_busy: busymod_work_func exit [ 206.135860] % modprobe test_klp_callbacks_demo [ 206.137206] livepatch: enabling patch 'test_klp_callbacks_demo' [ 206.137207] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 206.137228] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 206.137229] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 206.138577] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 207.871214] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 207.871314] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 207.871316] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 207.871318] livepatch: 'test_klp_callbacks_demo': patching complete [ 207.969934] % modprobe test_klp_callbacks_mod [ 207.971401] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 207.971404] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 207.971406] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 207.971423] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 207.972674] % rmmod test_klp_callbacks_mod [ 207.973849] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 207.973866] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 207.973868] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 207.973870] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 208.050976] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 208.050996] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 208.051017] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 208.051018] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 208.051020] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 208.911216] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 208.912965] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 208.912967] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 208.912969] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 208.959486] % rmmod test_klp_callbacks_demo [ 209.071781] % rmmod test_klp_callbacks_busy [ 209.072943] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 209.149873] ===== TEST: busy target module ===== [ 209.152833] % modprobe test_klp_callbacks_busy block_transition=Y [ 209.154258] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 209.154262] test_klp_callbacks_busy: busymod_work_func enter [ 209.157628] % modprobe test_klp_callbacks_demo [ 209.159018] livepatch: enabling patch 'test_klp_callbacks_demo' [ 209.159020] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 209.159040] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 209.159041] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 209.160430] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 209.165518] % modprobe test_klp_callbacks_mod [ 209.166893] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 209.166896] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 209.166914] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 209.168092] % rmmod test_klp_callbacks_mod [ 209.169182] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 209.169198] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 209.169200] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 209.250960] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 209.250978] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 209.251083] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 211.871203] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 211.872965] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 211.872967] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 211.872969] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 211.971835] % rmmod test_klp_callbacks_demo [ 212.051698] % rmmod test_klp_callbacks_busy [ 212.090506] test_klp_callbacks_busy: busymod_work_func exit [ 212.090513] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 212.169096] ===== TEST: multiple livepatches ===== [ 212.172221] % modprobe test_klp_callbacks_demo [ 212.173625] livepatch: enabling patch 'test_klp_callbacks_demo' [ 212.173627] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 212.173645] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 212.173646] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 213.881119] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 213.881238] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 213.881240] livepatch: 'test_klp_callbacks_demo': patching complete [ 213.904735] % modprobe test_klp_callbacks_demo2 [ 213.906252] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 213.906254] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 213.906291] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 213.906292] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 214.911228] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 214.911330] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 214.911332] livepatch: 'test_klp_callbacks_demo2': patching complete [ 214.923290] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 214.923309] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 214.923323] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 214.923324] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 215.951189] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 215.951289] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 215.951291] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 216.032305] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 216.032322] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 216.032338] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 216.032339] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 216.911208] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 216.911327] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 216.911329] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 216.941200] % rmmod test_klp_callbacks_demo2 [ 217.011815] % rmmod test_klp_callbacks_demo [ 217.089875] ===== TEST: atomic replace ===== [ 217.092945] % modprobe test_klp_callbacks_demo [ 217.094433] livepatch: enabling patch 'test_klp_callbacks_demo' [ 217.094436] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 217.094455] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 217.094457] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 217.951266] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 217.951371] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 217.951372] livepatch: 'test_klp_callbacks_demo': patching complete [ 218.014048] % modprobe test_klp_callbacks_demo2 replace=1 [ 218.015488] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 218.015491] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 218.015512] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 218.015514] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 219.631259] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 219.631381] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 219.631383] livepatch: 'test_klp_callbacks_demo2': patching complete [ 219.643212] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 219.643241] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 219.643273] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 219.643274] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 220.831217] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 220.831316] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 220.831318] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 220.853623] % rmmod test_klp_callbacks_demo2 [ 220.931690] % rmmod test_klp_callbacks_demo [ 221.032866] livepatch: kernel.ftrace_enabled = 1 [ 221.041249] ===== TEST: basic shadow variable API ===== [ 221.044342] % modprobe test_klp_shadow_vars [ 221.046005] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 221.046008] test_klp_shadow_vars: got expected NULL result [ 221.046010] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 221.046011] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 221.046015] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 221.046016] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 221.046019] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 221.046020] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 221.046022] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 221.046024] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 221.046026] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 221.046028] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 221.046030] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 221.046031] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 221.046034] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 221.046035] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 221.046036] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 221.046038] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 221.046039] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 221.046041] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 221.046042] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 221.046043] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 221.046045] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 221.046046] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 221.046047] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 221.046049] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 221.046050] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 221.046052] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 221.046054] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 221.046056] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 221.046057] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 221.046059] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 221.046061] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 221.046063] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 221.046064] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 221.046066] test_klp_shadow_vars: got expected NULL result [ 221.046067] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 221.046068] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 221.046070] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 221.046071] test_klp_shadow_vars: got expected NULL result [ 221.046072] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 221.046073] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 221.046075] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 221.046076] test_klp_shadow_vars: got expected NULL result [ 221.046077] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 221.046079] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 221.046080] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 221.046081] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 221.046083] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 221.046084] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 221.046092] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 221.046093] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 221.046094] test_klp_shadow_vars: got expected NULL result [ 221.046095] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 221.046097] test_klp_shadow_vars: got expected NULL result [ 221.046098] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 221.046099] test_klp_shadow_vars: got expected NULL result [ 221.047460] % rmmod test_klp_shadow_vars [ 221.132199] livepatch: kernel.ftrace_enabled = 1 [ 221.140198] ===== TEST: system state modification ===== [ 221.143166] % modprobe test_klp_state [ 221.144614] livepatch: enabling patch 'test_klp_state' [ 221.144616] livepatch: 'test_klp_state': initializing patching transition [ 221.144637] test_klp_state: pre_patch_callback: vmlinux [ 221.144638] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 221.144639] livepatch: 'test_klp_state': starting patching transition [ 222.111272] livepatch: 'test_klp_state': completing patching transition [ 222.111377] test_klp_state: post_patch_callback: vmlinux [ 222.111379] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 222.111381] livepatch: 'test_klp_state': patching complete [ 222.162434] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 222.162453] livepatch: 'test_klp_state': initializing unpatching transition [ 222.162474] test_klp_state: pre_unpatch_callback: vmlinux [ 222.162476] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 222.162477] livepatch: 'test_klp_state': starting unpatching transition [ 223.951243] livepatch: 'test_klp_state': completing unpatching transition [ 223.951343] test_klp_state: post_unpatch_callback: vmlinux [ 223.951345] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 223.951346] livepatch: 'test_klp_state': unpatching complete [ 223.978524] % rmmod test_klp_state [ 224.049861] ===== TEST: taking over system state modification ===== [ 224.052982] % modprobe test_klp_state [ 224.054535] livepatch: enabling patch 'test_klp_state' [ 224.054537] livepatch: 'test_klp_state': initializing patching transition [ 224.054558] test_klp_state: pre_patch_callback: vmlinux [ 224.054559] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 224.054561] livepatch: 'test_klp_state': starting patching transition [ 224.921252] livepatch: 'test_klp_state': completing patching transition [ 224.921353] test_klp_state: post_patch_callback: vmlinux [ 224.921355] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 224.921357] livepatch: 'test_klp_state': patching complete [ 224.974637] % modprobe test_klp_state2 [ 224.976246] livepatch: enabling patch 'test_klp_state2' [ 224.976248] livepatch: 'test_klp_state2': initializing patching transition [ 224.976275] test_klp_state2: pre_patch_callback: vmlinux [ 224.976276] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 224.976278] livepatch: 'test_klp_state2': starting patching transition [ 226.031256] livepatch: 'test_klp_state2': completing patching transition [ 226.031388] test_klp_state2: post_patch_callback: vmlinux [ 226.031389] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 226.031390] livepatch: 'test_klp_state2': patching complete [ 226.097150] % rmmod test_klp_state [ 226.170953] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 226.170972] livepatch: 'test_klp_state2': initializing unpatching transition [ 226.170994] test_klp_state2: pre_unpatch_callback: vmlinux [ 226.170995] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 226.170996] livepatch: 'test_klp_state2': starting unpatching transition [ 227.951209] livepatch: 'test_klp_state2': completing unpatching transition [ 227.951314] test_klp_state2: post_unpatch_callback: vmlinux [ 227.951317] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 227.951318] livepatch: 'test_klp_state2': unpatching complete [ 227.987229] % rmmod test_klp_state2 [ 228.048401] ===== TEST: compatible cumulative livepatches ===== [ 228.051472] % modprobe test_klp_state2 [ 228.052836] livepatch: enabling patch 'test_klp_state2' [ 228.052839] livepatch: 'test_klp_state2': initializing patching transition [ 228.052858] test_klp_state2: pre_patch_callback: vmlinux [ 228.052860] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 228.052861] livepatch: 'test_klp_state2': starting patching transition [ 229.071292] livepatch: 'test_klp_state2': completing patching transition [ 229.071407] test_klp_state2: post_patch_callback: vmlinux [ 229.071409] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 229.071410] livepatch: 'test_klp_state2': patching complete [ 229.174501] % modprobe test_klp_state3 [ 229.175964] livepatch: enabling patch 'test_klp_state3' [ 229.175966] livepatch: 'test_klp_state3': initializing patching transition [ 229.175984] test_klp_state3: pre_patch_callback: vmlinux [ 229.175985] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 229.175986] livepatch: 'test_klp_state3': starting patching transition [ 230.031287] livepatch: 'test_klp_state3': completing patching transition [ 230.031407] test_klp_state3: post_patch_callback: vmlinux [ 230.031409] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 230.031410] livepatch: 'test_klp_state3': patching complete [ 230.092633] % rmmod test_klp_state2 [ 230.174017] % modprobe test_klp_state2 [ 230.175415] livepatch: enabling patch 'test_klp_state2' [ 230.175416] livepatch: 'test_klp_state2': initializing patching transition [ 230.175437] test_klp_state2: pre_patch_callback: vmlinux [ 230.175438] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 230.175453] livepatch: 'test_klp_state2': starting patching transition [ 231.871289] livepatch: 'test_klp_state2': completing patching transition [ 231.871392] test_klp_state2: post_patch_callback: vmlinux [ 231.871393] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 231.871394] livepatch: 'test_klp_state2': patching complete [ 231.902873] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 231.902893] livepatch: 'test_klp_state2': initializing unpatching transition [ 231.902909] test_klp_state2: pre_unpatch_callback: vmlinux [ 231.902910] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 231.902911] livepatch: 'test_klp_state2': starting unpatching transition [ 232.831270] livepatch: 'test_klp_state2': completing unpatching transition [ 232.831371] test_klp_state2: post_unpatch_callback: vmlinux [ 232.831373] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 232.831374] livepatch: 'test_klp_state2': unpatching complete [ 232.912312] % rmmod test_klp_state2 [ 232.961704] % rmmod test_klp_state3 [ 233.039460] ===== TEST: incompatible cumulative livepatches ===== [ 233.042189] % modprobe test_klp_state2 [ 233.043520] livepatch: enabling patch 'test_klp_state2' [ 233.043522] livepatch: 'test_klp_state2': initializing patching transition [ 233.043542] test_klp_state2: pre_patch_callback: vmlinux [ 233.043543] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 233.043545] livepatch: 'test_klp_state2': starting patching transition [ 234.191241] livepatch: 'test_klp_state2': completing patching transition [ 234.191348] test_klp_state2: post_patch_callback: vmlinux [ 234.191365] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 234.191368] livepatch: 'test_klp_state2': patching complete [ 234.263631] % modprobe test_klp_state [ 234.265068] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 234.380932] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 234.380979] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 234.380997] livepatch: 'test_klp_state2': initializing unpatching transition [ 234.381018] test_klp_state2: pre_unpatch_callback: vmlinux [ 234.381019] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 234.381020] livepatch: 'test_klp_state2': starting unpatching transition [ 235.951273] livepatch: 'test_klp_state2': completing unpatching transition [ 235.951373] test_klp_state2: post_unpatch_callback: vmlinux [ 235.951375] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 235.951376] livepatch: 'test_klp_state2': unpatching complete [ 235.994953] % rmmod test_klp_state2 [ 236.093180] livepatch: kernel.ftrace_enabled = 1 [ 236.101310] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 236.102950] livepatch: kernel.ftrace_enabled = 0 [ 236.103030] % modprobe test_klp_livepatch [ 236.104411] livepatch: enabling patch 'test_klp_livepatch' [ 236.104414] livepatch: 'test_klp_livepatch': initializing patching transition [ 236.104437] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 236.104439] livepatch: failed to patch object 'vmlinux' [ 236.104440] livepatch: failed to enable patch 'test_klp_livepatch' [ 236.104441] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 236.104442] livepatch: 'test_klp_livepatch': completing unpatching transition [ 236.104560] livepatch: 'test_klp_livepatch': unpatching complete [ 236.260929] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 236.262507] livepatch: kernel.ftrace_enabled = 1 [ 236.265215] % modprobe test_klp_livepatch [ 236.266486] livepatch: enabling patch 'test_klp_livepatch' [ 236.266488] livepatch: 'test_klp_livepatch': initializing patching transition [ 236.267596] livepatch: 'test_klp_livepatch': starting patching transition [ 237.791212] livepatch: 'test_klp_livepatch': completing patching transition [ 237.791310] livepatch: 'test_klp_livepatch': patching complete [ 237.797154] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 237.798043] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 237.798095] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 237.798109] livepatch: 'test_klp_livepatch': starting unpatching transition [ 238.831322] livepatch: 'test_klp_livepatch': completing unpatching transition [ 238.832826] livepatch: 'test_klp_livepatch': unpatching complete [ 238.908640] % rmmod test_klp_livepatch [ 238.992263] livepatch: kernel.ftrace_enabled = 1 [ 238.999933] ===== TEST: sysfs test ===== [ 239.002807] % modprobe test_klp_livepatch [ 239.004110] livepatch: enabling patch 'test_klp_livepatch' [ 239.004111] livepatch: 'test_klp_livepatch': initializing patching transition [ 239.005181] livepatch: 'test_klp_livepatch': starting patching transition [ 240.111262] livepatch: 'test_klp_livepatch': completing patching transition [ 240.111381] livepatch: 'test_klp_livepatch': patching complete [ 240.132783] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 240.132799] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 240.132815] livepatch: 'test_klp_livepatch': starting unpatching transition [ 241.081328] livepatch: 'test_klp_livepatch': completing unpatching transition [ 241.082831] livepatch: 'test_klp_livepatch': unpatching complete [ 241.142598] % rmmod test_klp_livepatch [ 241.210158] ===== TEST: sysfs test object/patched ===== [ 241.213283] % modprobe test_klp_callbacks_demo [ 241.214762] livepatch: enabling patch 'test_klp_callbacks_demo' [ 241.214764] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 241.214784] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 241.214785] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 242.031320] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 242.031449] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 242.031451] livepatch: 'test_klp_callbacks_demo': patching complete [ 242.136182] % modprobe test_klp_callbacks_mod [ 242.137515] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 242.137517] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 242.137519] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 242.137535] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 242.139783] % rmmod test_klp_callbacks_mod [ 242.140942] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 242.140957] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 242.140959] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 242.140960] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 242.231991] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 242.232011] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 242.232030] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 242.232032] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 243.071322] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 243.071422] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 243.071424] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 243.141124] % rmmod test_klp_callbacks_demo [ 243.282256] livepatch: kernel.ftrace_enabled = 1 [ 243.290569] ===== TEST: basic function patching ===== [ 243.293596] % modprobe test_klp_livepatch [ 243.295013] livepatch: enabling patch 'test_klp_livepatch' [ 243.295016] livepatch: 'test_klp_livepatch': initializing patching transition [ 243.296162] livepatch: 'test_klp_livepatch': starting patching transition [ 244.911383] livepatch: 'test_klp_livepatch': completing patching transition [ 244.911489] livepatch: 'test_klp_livepatch': patching complete [ 244.924091] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 244.924112] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 244.924134] livepatch: 'test_klp_livepatch': starting unpatching transition [ 245.871319] livepatch: 'test_klp_livepatch': completing unpatching transition [ 245.872799] livepatch: 'test_klp_livepatch': unpatching complete [ 245.934000] % rmmod test_klp_livepatch [ 246.029530] ===== TEST: multiple livepatches ===== [ 246.032436] % modprobe test_klp_livepatch [ 246.033861] livepatch: enabling patch 'test_klp_livepatch' [ 246.033863] livepatch: 'test_klp_livepatch': initializing patching transition [ 246.034968] livepatch: 'test_klp_livepatch': starting patching transition [ 247.711339] livepatch: 'test_klp_livepatch': completing patching transition [ 247.711489] livepatch: 'test_klp_livepatch': patching complete [ 247.763427] test_klp_livepatch: this has been live patched [ 247.767396] % modprobe test_klp_atomic_replace replace=0 [ 247.768853] livepatch: enabling patch 'test_klp_atomic_replace' [ 247.768854] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 247.769960] livepatch: 'test_klp_atomic_replace': starting patching transition [ 248.751335] livepatch: 'test_klp_atomic_replace': completing patching transition [ 248.751471] livepatch: 'test_klp_atomic_replace': patching complete [ 248.788134] test_klp_livepatch: this has been live patched [ 248.789014] test_klp_atomic_replace: this has been live patched [ 248.789161] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 248.789181] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 248.789197] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 249.711272] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 249.712588] livepatch: 'test_klp_atomic_replace': unpatching complete [ 249.798070] % rmmod test_klp_atomic_replace [ 249.851728] test_klp_livepatch: this has been live patched [ 249.852707] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 249.852727] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 249.852745] livepatch: 'test_klp_livepatch': starting unpatching transition [ 250.751345] livepatch: 'test_klp_livepatch': completing unpatching transition [ 250.752836] livepatch: 'test_klp_livepatch': unpatching complete [ 250.761513] % rmmod test_klp_livepatch [ 250.851360] ===== TEST: atomic replace livepatch ===== [ 250.854431] % modprobe test_klp_livepatch [ 250.855791] livepatch: enabling patch 'test_klp_livepatch' [ 250.855793] livepatch: 'test_klp_livepatch': initializing patching transition [ 250.856996] livepatch: 'test_klp_livepatch': starting patching transition [ 251.711343] livepatch: 'test_klp_livepatch': completing patching transition [ 251.711461] livepatch: 'test_klp_livepatch': patching complete [ 251.773219] test_klp_livepatch: this has been live patched [ 251.777357] % modprobe test_klp_atomic_replace replace=1 [ 251.778873] livepatch: enabling patch 'test_klp_atomic_replace' [ 251.778875] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 251.780049] livepatch: 'test_klp_atomic_replace': starting patching transition [ 252.911301] livepatch: 'test_klp_atomic_replace': completing patching transition [ 252.912669] livepatch: 'test_klp_atomic_replace': patching complete [ 253.001881] test_klp_atomic_replace: this has been live patched [ 253.002864] % rmmod test_klp_livepatch [ 253.052447] test_klp_atomic_replace: this has been live patched [ 253.052561] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 253.052580] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 253.052597] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 253.871341] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 253.872934] livepatch: 'test_klp_atomic_replace': unpatching complete [ 253.961071] % rmmod test_klp_atomic_replace [ 254.075347] livepatch: kernel.ftrace_enabled = 1 [ 254.083375] ===== TEST: target module before livepatch ===== [ 254.086470] % modprobe test_klp_callbacks_mod [ 254.087750] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 254.091112] % modprobe test_klp_callbacks_demo [ 254.092572] livepatch: enabling patch 'test_klp_callbacks_demo' [ 254.092574] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 254.092593] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 254.092594] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 254.092595] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 254.911372] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 254.911470] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 254.911472] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 254.911474] livepatch: 'test_klp_callbacks_demo': patching complete [ 255.008950] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 255.008969] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 255.009000] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 255.009002] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 255.009020] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 255.951355] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 255.951452] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 255.951454] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 255.951456] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 256.018607] % rmmod test_klp_callbacks_demo [ 256.091916] % rmmod test_klp_callbacks_mod [ 256.093014] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 256.169237] ===== TEST: module_coming notifier ===== [ 256.172297] % modprobe test_klp_callbacks_demo [ 256.173751] livepatch: enabling patch 'test_klp_callbacks_demo' [ 256.173753] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 256.173772] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 256.173774] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 257.871420] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 257.871550] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 257.871552] livepatch: 'test_klp_callbacks_demo': patching complete [ 257.906694] % modprobe test_klp_callbacks_mod [ 257.907956] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 257.907958] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 257.907959] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 257.907977] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 257.908350] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 257.908367] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 257.908387] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 257.908388] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 257.908390] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 258.911396] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 258.911552] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 258.911554] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 258.911556] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 258.918270] % rmmod test_klp_callbacks_demo [ 259.001970] % rmmod test_klp_callbacks_mod [ 259.002953] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 259.118512] ===== TEST: module_going notifier ===== [ 259.121469] % modprobe test_klp_callbacks_mod [ 259.122753] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 259.125852] % modprobe test_klp_callbacks_demo [ 259.127258] livepatch: enabling patch 'test_klp_callbacks_demo' [ 259.127259] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 259.127280] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 259.127281] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 259.127282] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 260.191345] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 260.191448] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 260.191449] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 260.191451] livepatch: 'test_klp_callbacks_demo': patching complete [ 260.248083] % rmmod test_klp_callbacks_mod [ 260.249312] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 260.249330] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 260.249332] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 260.249333] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 260.311104] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 260.311123] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 260.311150] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 260.311151] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 261.151436] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 261.151581] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 261.151583] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 261.220008] % rmmod test_klp_callbacks_demo [ 261.309304] ===== TEST: module_coming and module_going notifiers ===== [ 261.312251] % modprobe test_klp_callbacks_demo [ 261.313722] livepatch: enabling patch 'test_klp_callbacks_demo' [ 261.313724] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 261.313762] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 261.313763] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 262.671500] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 262.671624] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 262.671626] livepatch: 'test_klp_callbacks_demo': patching complete [ 262.742090] % modprobe test_klp_callbacks_mod [ 262.743321] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 262.743324] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 262.743326] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 262.743344] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 262.744479] % rmmod test_klp_callbacks_mod [ 262.745567] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 262.745582] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 262.745584] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 262.745585] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 262.811091] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 262.811109] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 262.811130] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 262.811131] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 263.951430] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 263.951537] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 263.951539] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 264.022343] % rmmod test_klp_callbacks_demo [ 264.179776] ===== TEST: target module not present ===== [ 264.182883] % modprobe test_klp_callbacks_demo [ 264.184345] livepatch: enabling patch 'test_klp_callbacks_demo' [ 264.184347] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 264.184367] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 264.184368] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 265.081369] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 265.081514] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 265.081516] livepatch: 'test_klp_callbacks_demo': patching complete [ 265.101043] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 265.101062] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 265.101083] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 265.101084] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 266.191411] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 266.191510] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 266.191512] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 266.211817] % rmmod test_klp_callbacks_demo [ 266.279575] ===== TEST: pre-patch callback -ENODEV ===== [ 266.282491] % modprobe test_klp_callbacks_mod [ 266.283760] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 266.284111] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 266.285525] livepatch: enabling patch 'test_klp_callbacks_demo' [ 266.285527] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 266.285548] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 266.285549] livepatch: pre-patch callback failed for object 'vmlinux' [ 266.285550] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 266.285551] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 266.285552] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 266.285659] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 266.481071] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 266.482054] % rmmod test_klp_callbacks_mod [ 266.483170] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 266.569358] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 266.572523] % modprobe test_klp_callbacks_demo [ 266.573921] livepatch: enabling patch 'test_klp_callbacks_demo' [ 266.573924] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 266.573963] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 266.573965] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 268.031434] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 268.031535] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 268.031537] livepatch: 'test_klp_callbacks_demo': patching complete [ 268.100668] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 268.101662] % modprobe test_klp_callbacks_mod [ 268.102985] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 268.102988] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 268.102990] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 268.102991] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 268.231087] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 268.231141] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 268.231156] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 268.231176] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 268.231177] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 269.951417] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 269.951520] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 269.951522] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 270.048128] % rmmod test_klp_callbacks_demo [ 270.110260] ===== TEST: multiple target modules ===== [ 270.113377] % modprobe test_klp_callbacks_busy block_transition=N [ 270.114847] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 270.114851] test_klp_callbacks_busy: busymod_work_func enter [ 270.114853] test_klp_callbacks_busy: busymod_work_func exit [ 270.118456] % modprobe test_klp_callbacks_demo [ 270.119920] livepatch: enabling patch 'test_klp_callbacks_demo' [ 270.119922] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 270.119941] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 270.119943] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 270.121350] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 271.871484] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 271.871585] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 271.871587] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 271.871589] livepatch: 'test_klp_callbacks_demo': patching complete [ 271.957226] % modprobe test_klp_callbacks_mod [ 271.958646] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 271.958665] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 271.958667] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 271.958683] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 271.960010] % rmmod test_klp_callbacks_mod [ 271.961127] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 271.961141] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 271.961143] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 271.961145] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 272.031267] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 272.031285] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 272.031303] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 272.031304] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 272.031306] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 272.831467] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 272.833230] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 272.833232] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 272.833233] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 272.839688] % rmmod test_klp_callbacks_demo [ 272.912113] % rmmod test_klp_callbacks_busy [ 272.913268] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 272.989731] ===== TEST: busy target module ===== [ 272.992863] % modprobe test_klp_callbacks_busy block_transition=Y [ 272.994427] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 272.994433] test_klp_callbacks_busy: busymod_work_func enter [ 272.997897] % modprobe test_klp_callbacks_demo [ 272.999390] livepatch: enabling patch 'test_klp_callbacks_demo' [ 272.999391] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 272.999413] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 272.999415] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 273.000863] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 273.006166] % modprobe test_klp_callbacks_mod [ 273.007622] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 273.007624] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 273.007651] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 273.009014] % rmmod test_klp_callbacks_mod [ 273.010123] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 273.010139] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 273.010141] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 273.091251] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 273.091269] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 273.091425] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 275.791451] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 275.793206] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 275.793209] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 275.793210] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 275.815309] % rmmod test_klp_callbacks_demo [ 275.882051] % rmmod test_klp_callbacks_busy [ 275.890764] test_klp_callbacks_busy: busymod_work_func exit [ 275.890773] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 275.959816] ===== TEST: multiple livepatches ===== [ 275.963029] % modprobe test_klp_callbacks_demo [ 275.964604] livepatch: enabling patch 'test_klp_callbacks_demo' [ 275.964606] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 275.964628] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 275.964629] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 277.641504] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 277.641611] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 277.641613] livepatch: 'test_klp_callbacks_demo': patching complete [ 277.698468] % modprobe test_klp_callbacks_demo2 [ 277.700098] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 277.700100] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 277.700119] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 277.700120] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 278.681475] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 278.681615] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 278.681617] livepatch: 'test_klp_callbacks_demo2': patching complete [ 278.719462] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 278.719482] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 278.719504] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 278.719505] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 279.791389] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 279.791487] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 279.791489] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 279.829592] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 279.829612] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 279.829629] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 279.829630] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 280.831497] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 280.831602] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 280.831604] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 280.839540] % rmmod test_klp_callbacks_demo2 [ 280.912127] % rmmod test_klp_callbacks_demo [ 280.989065] ===== TEST: atomic replace ===== [ 280.991951] % modprobe test_klp_callbacks_demo [ 280.993414] livepatch: enabling patch 'test_klp_callbacks_demo' [ 280.993416] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 280.993436] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 280.993437] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 281.871479] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 281.871579] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 281.871581] livepatch: 'test_klp_callbacks_demo': patching complete [ 281.912919] % modprobe test_klp_callbacks_demo2 replace=1 [ 281.914353] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 281.914356] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 281.914376] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 281.914377] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 283.071478] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 283.071583] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 283.071585] livepatch: 'test_klp_callbacks_demo2': patching complete [ 283.135341] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 283.135361] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 283.135381] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 283.135382] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 284.031462] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 284.031579] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 284.031580] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 284.044328] % rmmod test_klp_callbacks_demo2 [ 284.112113] % rmmod test_klp_callbacks_demo [ 284.224335] livepatch: kernel.ftrace_enabled = 1 [ 100.031067] livepatch: 'test_klp_state2': completing patching transition [ 100.031184] test_klp_state2: post_patch_callback: vmlinux [ 100.031185] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 100.031187] livepatch: 'test_klp_state2': patching complete [ 100.045573] % modprobe test_klp_state3 [ 100.047069] livepatch: enabling patch 'test_klp_state3' [ 100.047072] livepatch: 'test_klp_state3': initializing patching transition [ 100.047093] test_klp_state3: pre_patch_callback: vmlinux [ 100.047094] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 100.047095] livepatch: 'test_klp_state3': starting patching transition [ 101.711037] livepatch: 'test_klp_state3': completing patching transition [ 101.711204] test_klp_state3: post_patch_callback: vmlinux [ 101.711206] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 101.711207] livepatch: 'test_klp_state3': patching complete [ 101.778205] % rmmod test_klp_state2 [ 101.853923] % modprobe test_klp_state2 [ 101.855447] livepatch: enabling patch 'test_klp_state2' [ 101.855449] livepatch: 'test_klp_state2': initializing patching transition [ 101.855470] test_klp_state2: pre_patch_callback: vmlinux [ 101.855472] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 101.855473] livepatch: 'test_klp_state2': starting patching transition [ 103.630965] livepatch: 'test_klp_state2': completing patching transition [ 103.631070] test_klp_state2: post_patch_callback: vmlinux [ 103.631071] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 103.631073] livepatch: 'test_klp_state2': patching complete [ 103.686892] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 103.686911] livepatch: 'test_klp_state2': initializing unpatching transition [ 103.686932] test_klp_state2: pre_unpatch_callback: vmlinux [ 103.686933] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 103.686935] livepatch: 'test_klp_state2': starting unpatching transition [ 105.150996] livepatch: 'test_klp_state2': completing unpatching transition [ 105.151097] test_klp_state2: post_unpatch_callback: vmlinux [ 105.151099] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 105.151100] livepatch: 'test_klp_state2': unpatching complete [ 105.199966] % rmmod test_klp_state2 [ 105.281410] % rmmod test_klp_state3 [ 105.355459] ===== TEST: incompatible cumulative livepatches ===== [ 105.358650] % modprobe test_klp_state2 [ 105.360034] livepatch: enabling patch 'test_klp_state2' [ 105.360035] livepatch: 'test_klp_state2': initializing patching transition [ 105.360056] test_klp_state2: pre_patch_callback: vmlinux [ 105.360057] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 105.360058] livepatch: 'test_klp_state2': starting patching transition [ 107.071045] livepatch: 'test_klp_state2': completing patching transition [ 107.071145] test_klp_state2: post_patch_callback: vmlinux [ 107.071147] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 107.071148] livepatch: 'test_klp_state2': patching complete [ 107.087110] % modprobe test_klp_state [ 107.088695] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 107.190677] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 107.190716] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 107.190734] livepatch: 'test_klp_state2': initializing unpatching transition [ 107.190753] test_klp_state2: pre_unpatch_callback: vmlinux [ 107.190754] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 107.190755] livepatch: 'test_klp_state2': starting unpatching transition [ 108.111015] livepatch: 'test_klp_state2': completing unpatching transition [ 108.111118] test_klp_state2: post_unpatch_callback: vmlinux [ 108.111120] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 108.111121] livepatch: 'test_klp_state2': unpatching complete [ 108.200035] % rmmod test_klp_state2 [ 108.301787] livepatch: kernel.ftrace_enabled = 1 [ 108.308056] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 108.309828] livepatch: kernel.ftrace_enabled = 0 [ 108.309890] % modprobe test_klp_livepatch [ 108.311242] livepatch: enabling patch 'test_klp_livepatch' [ 108.311244] livepatch: 'test_klp_livepatch': initializing patching transition [ 108.311267] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 108.311270] livepatch: failed to patch object 'vmlinux' [ 108.311271] livepatch: failed to enable patch 'test_klp_livepatch' [ 108.311272] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 108.311273] livepatch: 'test_klp_livepatch': completing unpatching transition [ 108.311382] livepatch: 'test_klp_livepatch': unpatching complete [ 108.500681] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 108.502529] livepatch: kernel.ftrace_enabled = 1 [ 108.505528] % modprobe test_klp_livepatch [ 108.506881] livepatch: enabling patch 'test_klp_livepatch' [ 108.506882] livepatch: 'test_klp_livepatch': initializing patching transition [ 108.508030] livepatch: 'test_klp_livepatch': starting patching transition [ 109.790992] livepatch: 'test_klp_livepatch': completing patching transition [ 109.791146] livepatch: 'test_klp_livepatch': patching complete [ 109.834645] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 109.835658] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 109.835676] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 109.835692] livepatch: 'test_klp_livepatch': starting unpatching transition [ 110.831016] livepatch: 'test_klp_livepatch': completing unpatching transition [ 110.832521] livepatch: 'test_klp_livepatch': unpatching complete [ 110.845082] % rmmod test_klp_livepatch [ 110.962324] livepatch: kernel.ftrace_enabled = 1 [ 110.969070] ===== TEST: sysfs test ===== [ 110.972147] % modprobe test_klp_livepatch [ 110.973575] livepatch: enabling patch 'test_klp_livepatch' [ 110.973578] livepatch: 'test_klp_livepatch': initializing patching transition [ 110.974676] livepatch: 'test_klp_livepatch': starting patching transition [ 112.671034] livepatch: 'test_klp_livepatch': completing patching transition [ 112.671137] livepatch: 'test_klp_livepatch': patching complete [ 112.711815] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 112.711832] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 112.711853] livepatch: 'test_klp_livepatch': starting unpatching transition [ 113.711046] livepatch: 'test_klp_livepatch': completing unpatching transition [ 113.712556] livepatch: 'test_klp_livepatch': unpatching complete [ 113.721666] % rmmod test_klp_livepatch [ 113.786348] ===== TEST: sysfs test object/patched ===== [ 113.789508] % modprobe test_klp_callbacks_demo [ 113.791059] livepatch: enabling patch 'test_klp_callbacks_demo' [ 113.791061] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 113.791082] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 113.791083] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 114.831046] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 114.831155] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 114.831157] livepatch: 'test_klp_callbacks_demo': patching complete [ 114.915700] % modprobe test_klp_callbacks_mod [ 114.917199] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 114.917201] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 114.917203] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 114.917220] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 114.919407] % rmmod test_klp_callbacks_mod [ 114.920563] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 114.920578] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 114.920580] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 114.920582] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 114.991648] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 114.991667] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 114.991690] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 114.991692] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 116.671055] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 116.671159] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 116.671177] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 116.706610] % rmmod test_klp_callbacks_demo [ 116.853345] livepatch: kernel.ftrace_enabled = 1 [ 116.860222] ===== TEST: basic function patching ===== [ 116.863329] % modprobe test_klp_livepatch [ 116.864936] livepatch: enabling patch 'test_klp_livepatch' [ 116.864938] livepatch: 'test_klp_livepatch': initializing patching transition [ 116.866224] livepatch: 'test_klp_livepatch': starting patching transition [ 117.791071] livepatch: 'test_klp_livepatch': completing patching transition [ 117.791193] livepatch: 'test_klp_livepatch': patching complete [ 117.885360] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 117.885397] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 117.885424] livepatch: 'test_klp_livepatch': starting unpatching transition [ 118.750980] livepatch: 'test_klp_livepatch': completing unpatching transition [ 118.752543] livepatch: 'test_klp_livepatch': unpatching complete [ 118.794530] % rmmod test_klp_livepatch [ 118.897157] ===== TEST: multiple livepatches ===== [ 118.900009] % modprobe test_klp_livepatch [ 118.901338] livepatch: enabling patch 'test_klp_livepatch' [ 118.901341] livepatch: 'test_klp_livepatch': initializing patching transition [ 118.902413] livepatch: 'test_klp_livepatch': starting patching transition [ 119.711012] livepatch: 'test_klp_livepatch': completing patching transition [ 119.711114] livepatch: 'test_klp_livepatch': patching complete [ 119.718796] test_klp_livepatch: this has been live patched [ 119.723001] % modprobe test_klp_atomic_replace replace=0 [ 119.724612] livepatch: enabling patch 'test_klp_atomic_replace' [ 119.724614] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 119.725833] livepatch: 'test_klp_atomic_replace': starting patching transition [ 120.751022] livepatch: 'test_klp_atomic_replace': completing patching transition [ 120.751130] livepatch: 'test_klp_atomic_replace': patching complete [ 120.847005] test_klp_livepatch: this has been live patched [ 120.847986] test_klp_atomic_replace: this has been live patched [ 120.848118] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 120.848138] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 120.848158] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 121.710988] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 121.712378] livepatch: 'test_klp_atomic_replace': unpatching complete [ 121.757104] % rmmod test_klp_atomic_replace [ 121.801514] test_klp_livepatch: this has been live patched [ 121.802520] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 121.802538] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 121.802554] livepatch: 'test_klp_livepatch': starting unpatching transition [ 122.761006] livepatch: 'test_klp_livepatch': completing unpatching transition [ 122.762405] livepatch: 'test_klp_livepatch': unpatching complete [ 122.812386] % rmmod test_klp_livepatch [ 122.888229] ===== TEST: atomic replace livepatch ===== [ 122.891365] % modprobe test_klp_livepatch [ 122.892757] livepatch: enabling patch 'test_klp_livepatch' [ 122.892759] livepatch: 'test_klp_livepatch': initializing patching transition [ 122.893900] livepatch: 'test_klp_livepatch': starting patching transition [ 123.871073] livepatch: 'test_klp_livepatch': completing patching transition [ 123.871179] livepatch: 'test_klp_livepatch': patching complete [ 123.913201] test_klp_livepatch: this has been live patched [ 123.917508] % modprobe test_klp_atomic_replace replace=1 [ 123.918994] livepatch: enabling patch 'test_klp_atomic_replace' [ 123.918996] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 123.920106] livepatch: 'test_klp_atomic_replace': starting patching transition [ 124.751016] livepatch: 'test_klp_atomic_replace': completing patching transition [ 124.752390] livepatch: 'test_klp_atomic_replace': patching complete [ 124.838483] test_klp_atomic_replace: this has been live patched [ 124.839576] % rmmod test_klp_livepatch [ 124.892319] test_klp_atomic_replace: this has been live patched [ 124.892494] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 124.892513] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 124.892529] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 125.711010] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 125.712510] livepatch: 'test_klp_atomic_replace': unpatching complete [ 125.801651] % rmmod test_klp_atomic_replace [ 125.905407] livepatch: kernel.ftrace_enabled = 1 [ 125.912644] ===== TEST: target module before livepatch ===== [ 125.915835] % modprobe test_klp_callbacks_mod [ 125.917236] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 125.920790] % modprobe test_klp_callbacks_demo [ 125.922345] livepatch: enabling patch 'test_klp_callbacks_demo' [ 125.922347] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 125.922366] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 125.922367] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 125.922369] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 127.711053] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 127.711189] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 127.711191] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 127.711193] livepatch: 'test_klp_callbacks_demo': patching complete [ 127.755072] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 127.755091] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 127.755106] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 127.755107] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 127.755109] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 128.671068] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 128.671171] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 128.671172] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 128.671174] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 128.765224] % rmmod test_klp_callbacks_demo [ 128.811614] % rmmod test_klp_callbacks_mod [ 128.812787] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 128.887174] ===== TEST: module_coming notifier ===== [ 128.890422] % modprobe test_klp_callbacks_demo [ 128.892042] livepatch: enabling patch 'test_klp_callbacks_demo' [ 128.892045] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 128.892067] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 128.892068] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 129.791064] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 129.791173] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 129.791175] livepatch: 'test_klp_callbacks_demo': patching complete [ 129.812482] % modprobe test_klp_callbacks_mod [ 129.813968] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 129.813971] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 129.813973] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 129.813990] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 129.814364] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 129.814383] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 129.814404] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 129.814405] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 129.814407] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 130.671041] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 130.671174] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 130.671176] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 130.671178] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 130.723905] % rmmod test_klp_callbacks_demo [ 130.771625] % rmmod test_klp_callbacks_mod [ 130.772641] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 130.826909] ===== TEST: module_going notifier ===== [ 130.830202] % modprobe test_klp_callbacks_mod [ 130.831538] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 130.834984] % modprobe test_klp_callbacks_demo [ 130.836549] livepatch: enabling patch 'test_klp_callbacks_demo' [ 130.836552] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 130.836573] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 130.836574] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 130.836576] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 131.710974] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 131.711075] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 131.711077] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 131.711079] livepatch: 'test_klp_callbacks_demo': patching complete [ 131.754244] % rmmod test_klp_callbacks_mod [ 131.755454] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 131.755471] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 131.755473] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 131.755475] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 131.800736] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 131.800754] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 131.800775] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 131.800776] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 133.071027] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 133.071132] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 133.071134] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 133.113297] % rmmod test_klp_callbacks_demo [ 133.177434] ===== TEST: module_coming and module_going notifiers ===== [ 133.180622] % modprobe test_klp_callbacks_demo [ 133.182228] livepatch: enabling patch 'test_klp_callbacks_demo' [ 133.182231] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 133.182251] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 133.182252] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 134.751073] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 134.751184] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 134.751187] livepatch: 'test_klp_callbacks_demo': patching complete [ 134.813811] % modprobe test_klp_callbacks_mod [ 134.815280] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 134.815282] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 134.815284] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 134.815302] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 134.816526] % rmmod test_klp_callbacks_mod [ 134.817758] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 134.817773] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 134.817775] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 134.817776] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 134.940787] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 134.940806] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 134.940828] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 134.940829] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 135.950967] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 135.951069] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 135.951071] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 136.051536] % rmmod test_klp_callbacks_demo [ 136.117597] ===== TEST: target module not present ===== [ 136.120836] % modprobe test_klp_callbacks_demo [ 136.122441] livepatch: enabling patch 'test_klp_callbacks_demo' [ 136.122444] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 136.122476] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 136.122477] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 137.871054] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 137.871179] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 137.871181] livepatch: 'test_klp_callbacks_demo': patching complete [ 137.952610] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 137.952631] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 137.952666] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 137.952668] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 139.071051] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 139.071152] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 139.071154] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 139.164250] % rmmod test_klp_callbacks_demo [ 139.257782] ===== TEST: pre-patch callback -ENODEV ===== [ 139.260610] % modprobe test_klp_callbacks_mod [ 139.261932] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 139.262266] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 139.263690] livepatch: enabling patch 'test_klp_callbacks_demo' [ 139.263692] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 139.263711] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 139.263712] livepatch: pre-patch callback failed for object 'vmlinux' [ 139.263713] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 139.263714] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 139.263715] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 139.263820] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 139.410666] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 139.411683] % rmmod test_klp_callbacks_mod [ 139.412838] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 139.477858] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 139.480794] % modprobe test_klp_callbacks_demo [ 139.482279] livepatch: enabling patch 'test_klp_callbacks_demo' [ 139.482282] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 139.482303] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 139.482304] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 140.831122] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 140.831279] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 140.831281] livepatch: 'test_klp_callbacks_demo': patching complete [ 140.908032] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 140.908963] % modprobe test_klp_callbacks_mod [ 140.910243] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 140.910246] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 140.910248] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 140.910249] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 141.030671] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 141.030722] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 141.030738] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 141.030776] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 141.030777] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 141.789613] crw_info : CRW reports slct=0, oflw=0, chn=0, rsc=B, anc=0, erc=0, rsid=0 [ 142.031077] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 142.031196] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 142.031198] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 142.041387] % rmmod test_klp_callbacks_demo [ 142.108391] ===== TEST: multiple target modules ===== [ 142.111495] % modprobe test_klp_callbacks_busy block_transition=N [ 142.112950] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 142.112954] test_klp_callbacks_busy: busymod_work_func enter [ 142.112956] test_klp_callbacks_busy: busymod_work_func exit [ 142.116379] % modprobe test_klp_callbacks_demo [ 142.117801] livepatch: enabling patch 'test_klp_callbacks_demo' [ 142.117802] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 142.117840] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 142.117841] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 142.119215] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 143.070935] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 143.071035] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 143.071037] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 143.071039] livepatch: 'test_klp_callbacks_demo': patching complete [ 143.141657] % modprobe test_klp_callbacks_mod [ 143.143195] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 143.143198] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 143.143200] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 143.143236] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 143.144563] % rmmod test_klp_callbacks_mod [ 143.145857] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 143.145873] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 143.145875] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 143.145876] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 143.220815] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 143.220851] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 143.220872] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 143.220873] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 143.220875] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 144.031007] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 144.032819] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 144.032821] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 144.032822] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 144.130433] % rmmod test_klp_callbacks_demo [ 144.211697] % rmmod test_klp_callbacks_busy [ 144.213003] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 144.308603] ===== TEST: busy target module ===== [ 144.311786] % modprobe test_klp_callbacks_busy block_transition=Y [ 144.313186] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 144.313190] test_klp_callbacks_busy: busymod_work_func enter [ 144.316644] % modprobe test_klp_callbacks_demo [ 144.318094] livepatch: enabling patch 'test_klp_callbacks_demo' [ 144.318095] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 144.318115] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 144.318116] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 144.319516] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 144.324787] % modprobe test_klp_callbacks_mod [ 144.326157] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 144.326159] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 144.326174] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 144.327454] % rmmod test_klp_callbacks_mod [ 144.328546] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 144.328561] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 144.328563] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 144.410842] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 144.410861] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 144.410966] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 146.990932] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 146.992683] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 146.992685] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 146.992687] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 147.033638] % rmmod test_klp_callbacks_demo [ 147.121645] % rmmod test_klp_callbacks_busy [ 147.130314] test_klp_callbacks_busy: busymod_work_func exit [ 147.130323] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 147.208177] ===== TEST: multiple livepatches ===== [ 147.211079] % modprobe test_klp_callbacks_demo [ 147.212707] livepatch: enabling patch 'test_klp_callbacks_demo' [ 147.212710] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 147.212730] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 147.212731] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 148.031059] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 148.031160] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 148.031162] livepatch: 'test_klp_callbacks_demo': patching complete [ 148.132098] % modprobe test_klp_callbacks_demo2 [ 148.133641] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 148.133644] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 148.133664] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 148.133666] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 149.151067] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 149.151184] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 149.151186] livepatch: 'test_klp_callbacks_demo2': patching complete [ 149.152975] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 149.152995] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 149.153015] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 149.153016] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 149.951022] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 149.951125] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 149.951127] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 149.960854] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 149.960873] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 149.960888] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 149.960890] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 150.991050] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 150.991152] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 150.991154] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 151.071631] % rmmod test_klp_callbacks_demo2 [ 151.131726] % rmmod test_klp_callbacks_demo [ 151.229250] ===== TEST: atomic replace ===== [ 151.232455] % modprobe test_klp_callbacks_demo [ 151.234085] livepatch: enabling patch 'test_klp_callbacks_demo' [ 151.234087] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 151.234107] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 151.234108] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 152.031077] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 152.031231] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 152.031233] livepatch: 'test_klp_callbacks_demo': patching complete [ 152.052914] % modprobe test_klp_callbacks_demo2 replace=1 [ 152.054593] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 152.054595] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 152.054616] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 152.054618] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 153.071103] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 153.071224] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 153.071226] livepatch: 'test_klp_callbacks_demo2': patching complete [ 153.073798] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 153.073819] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 153.073840] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 153.073841] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 154.031008] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 154.031113] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 154.031116] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 154.084458] % rmmod test_klp_callbacks_demo2 [ 154.161744] % rmmod test_klp_callbacks_demo [ 154.245192] livepatch: kernel.ftrace_enabled = 1 [ 154.253557] ===== TEST: basic shadow variable API ===== [ 154.256693] % modprobe test_klp_shadow_vars [ 154.258215] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 154.258218] test_klp_shadow_vars: got expected NULL result [ 154.258220] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 154.258221] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 154.258224] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 154.258226] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 154.258228] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 154.258229] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 154.258232] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 154.258233] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 154.258235] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 154.258236] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 154.258239] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 154.258240] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 154.258242] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 154.258243] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 154.258244] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 154.258246] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 154.258268] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 154.258269] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 154.258270] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 154.258271] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 154.258273] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 154.258274] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 154.258275] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 154.258276] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 154.258278] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 154.258280] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 154.258281] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 154.258283] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 154.258284] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 154.258286] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 154.258287] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 154.258289] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 154.258290] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 154.258292] test_klp_shadow_vars: got expected NULL result [ 154.258292] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 154.258294] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 154.258295] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 154.258297] test_klp_shadow_vars: got expected NULL result [ 154.258297] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 154.258299] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 154.258300] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 154.258301] test_klp_shadow_vars: got expected NULL result [ 154.258302] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 154.258303] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 154.258304] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 154.258306] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 154.258307] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 154.258308] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 154.258317] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 154.258318] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 154.258319] test_klp_shadow_vars: got expected NULL result [ 154.258320] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 154.258321] test_klp_shadow_vars: got expected NULL result [ 154.258322] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 154.258323] test_klp_shadow_vars: got expected NULL result [ 154.259549] % rmmod test_klp_shadow_vars [ 154.364539] livepatch: kernel.ftrace_enabled = 1 [ 154.373051] ===== TEST: system state modification ===== [ 154.376288] % modprobe test_klp_state [ 154.377808] livepatch: enabling patch 'test_klp_state' [ 154.377810] livepatch: 'test_klp_state': initializing patching transition [ 154.377832] test_klp_state: pre_patch_callback: vmlinux [ 154.377833] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 154.377834] livepatch: 'test_klp_state': starting patching transition [ 155.951098] livepatch: 'test_klp_state': completing patching transition [ 155.951196] test_klp_state: post_patch_callback: vmlinux [ 155.951198] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 155.951199] livepatch: 'test_klp_state': patching complete [ 156.005967] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 156.005986] livepatch: 'test_klp_state': initializing unpatching transition [ 156.006003] test_klp_state: pre_unpatch_callback: vmlinux [ 156.006004] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 156.006005] livepatch: 'test_klp_state': starting unpatching transition [ 156.991099] livepatch: 'test_klp_state': completing unpatching transition [ 156.991197] test_klp_state: post_unpatch_callback: vmlinux [ 156.991199] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 156.991201] livepatch: 'test_klp_state': unpatching complete [ 157.016096] % rmmod test_klp_state [ 157.119439] ===== TEST: taking over system state modification ===== [ 157.122658] % modprobe test_klp_state [ 157.124299] livepatch: enabling patch 'test_klp_state' [ 157.124302] livepatch: 'test_klp_state': initializing patching transition [ 157.124324] test_klp_state: pre_patch_callback: vmlinux [ 157.124325] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 157.124326] livepatch: 'test_klp_state': starting patching transition [ 158.031004] livepatch: 'test_klp_state': completing patching transition [ 158.031105] test_klp_state: post_patch_callback: vmlinux [ 158.031107] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 158.031109] livepatch: 'test_klp_state': patching complete [ 158.044647] % modprobe test_klp_state2 [ 158.046174] livepatch: enabling patch 'test_klp_state2' [ 158.046176] livepatch: 'test_klp_state2': initializing patching transition [ 158.046194] test_klp_state2: pre_patch_callback: vmlinux [ 158.046195] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 158.046197] livepatch: 'test_klp_state2': starting patching transition [ 158.991060] livepatch: 'test_klp_state2': completing patching transition [ 158.991184] test_klp_state2: post_patch_callback: vmlinux [ 158.991185] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 158.991186] livepatch: 'test_klp_state2': patching complete [ 159.065518] % rmmod test_klp_state [ 159.130779] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 159.130797] livepatch: 'test_klp_state2': initializing unpatching transition [ 159.130818] test_klp_state2: pre_unpatch_callback: vmlinux [ 159.130819] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 159.130820] livepatch: 'test_klp_state2': starting unpatching transition [ 160.911085] livepatch: 'test_klp_state2': completing unpatching transition [ 160.911224] test_klp_state2: post_unpatch_callback: vmlinux [ 160.911226] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 160.911227] livepatch: 'test_klp_state2': unpatching complete [ 160.948036] % rmmod test_klp_state2 [ 161.059424] ===== TEST: compatible cumulative livepatches ===== [ 161.062474] % modprobe test_klp_state2 [ 161.063931] livepatch: enabling patch 'test_klp_state2' [ 161.063934] livepatch: 'test_klp_state2': initializing patching transition [ 161.063957] test_klp_state2: pre_patch_callback: vmlinux [ 161.063958] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 161.063959] livepatch: 'test_klp_state2': starting patching transition [ 162.671079] livepatch: 'test_klp_state2': completing patching transition [ 162.671184] test_klp_state2: post_patch_callback: vmlinux [ 162.671186] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 162.671188] livepatch: 'test_klp_state2': patching complete [ 162.694355] % modprobe test_klp_state3 [ 162.695852] livepatch: enabling patch 'test_klp_state3' [ 162.695855] livepatch: 'test_klp_state3': initializing patching transition [ 162.695877] test_klp_state3: pre_patch_callback: vmlinux [ 162.695878] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 162.695879] livepatch: 'test_klp_state3': starting patching transition [ 163.951036] livepatch: 'test_klp_state3': completing patching transition [ 163.951139] test_klp_state3: post_patch_callback: vmlinux [ 163.951141] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 163.951142] livepatch: 'test_klp_state3': patching complete [ 164.019372] % rmmod test_klp_state2 [ 164.093821] % modprobe test_klp_state2 [ 164.095460] livepatch: enabling patch 'test_klp_state2' [ 164.095463] livepatch: 'test_klp_state2': initializing patching transition [ 164.095484] test_klp_state2: pre_patch_callback: vmlinux [ 164.095485] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 164.095487] livepatch: 'test_klp_state2': starting patching transition [ 165.871122] livepatch: 'test_klp_state2': completing patching transition [ 165.871280] test_klp_state2: post_patch_callback: vmlinux [ 165.871281] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 165.871283] livepatch: 'test_klp_state2': patching complete [ 165.926447] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 165.926486] livepatch: 'test_klp_state2': initializing unpatching transition [ 165.926507] test_klp_state2: pre_unpatch_callback: vmlinux [ 165.926508] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 165.926509] livepatch: 'test_klp_state2': starting unpatching transition [ 166.831076] livepatch: 'test_klp_state2': completing unpatching transition [ 166.831199] test_klp_state2: post_unpatch_callback: vmlinux [ 166.831201] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 166.831203] livepatch: 'test_klp_state2': unpatching complete [ 166.835243] % rmmod test_klp_state2 [ 166.901777] % rmmod test_klp_state3 [ 166.969742] ===== TEST: incompatible cumulative livepatches ===== [ 166.972899] % modprobe test_klp_state2 [ 166.974399] livepatch: enabling patch 'test_klp_state2' [ 166.974401] livepatch: 'test_klp_state2': initializing patching transition [ 166.974420] test_klp_state2: pre_patch_callback: vmlinux [ 166.974422] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 166.974423] livepatch: 'test_klp_state2': starting patching transition [ 168.681063] livepatch: 'test_klp_state2': completing patching transition [ 168.681165] test_klp_state2: post_patch_callback: vmlinux [ 168.681167] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 168.681169] livepatch: 'test_klp_state2': patching complete [ 168.703685] % modprobe test_klp_state [ 168.705124] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 168.860784] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 168.860833] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 168.860851] livepatch: 'test_klp_state2': initializing unpatching transition [ 168.860909] test_klp_state2: pre_unpatch_callback: vmlinux [ 168.860910] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 168.860911] livepatch: 'test_klp_state2': starting unpatching transition [ 169.871047] livepatch: 'test_klp_state2': completing unpatching transition [ 169.871186] test_klp_state2: post_unpatch_callback: vmlinux [ 169.871188] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 169.871189] livepatch: 'test_klp_state2': unpatching complete [ 169.971989] % rmmod test_klp_state2 [ 170.114423] livepatch: kernel.ftrace_enabled = 1 [ 170.122713] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 170.124491] livepatch: kernel.ftrace_enabled = 0 [ 170.124552] % modprobe test_klp_livepatch [ 170.125916] livepatch: enabling patch 'test_klp_livepatch' [ 170.125918] livepatch: 'test_klp_livepatch': initializing patching transition [ 170.125942] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 170.125945] livepatch: failed to patch object 'vmlinux' [ 170.125946] livepatch: failed to enable patch 'test_klp_livepatch' [ 170.125947] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 170.125948] livepatch: 'test_klp_livepatch': completing unpatching transition [ 170.126056] livepatch: 'test_klp_livepatch': unpatching complete [ 170.260823] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 170.262584] livepatch: kernel.ftrace_enabled = 1 [ 170.265470] % modprobe test_klp_livepatch [ 170.266711] livepatch: enabling patch 'test_klp_livepatch' [ 170.266712] livepatch: 'test_klp_livepatch': initializing patching transition [ 170.267782] livepatch: 'test_klp_livepatch': starting patching transition [ 171.791076] livepatch: 'test_klp_livepatch': completing patching transition [ 171.791226] livepatch: 'test_klp_livepatch': patching complete [ 171.797053] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 171.798001] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 171.798020] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 171.798035] livepatch: 'test_klp_livepatch': starting unpatching transition [ 172.831042] livepatch: 'test_klp_livepatch': completing unpatching transition [ 172.832563] livepatch: 'test_klp_livepatch': unpatching complete [ 172.908336] % rmmod test_klp_livepatch [ 172.983414] livepatch: kernel.ftrace_enabled = 1 [ 172.991780] ===== TEST: sysfs test ===== [ 172.994796] % modprobe test_klp_livepatch [ 172.996248] livepatch: enabling patch 'test_klp_livepatch' [ 172.996250] livepatch: 'test_klp_livepatch': initializing patching transition [ 172.997482] livepatch: 'test_klp_livepatch': starting patching transition [ 174.671056] livepatch: 'test_klp_livepatch': completing patching transition [ 174.671194] livepatch: 'test_klp_livepatch': patching complete [ 174.734417] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 174.734432] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 174.734466] livepatch: 'test_klp_livepatch': starting unpatching transition [ 175.711081] livepatch: 'test_klp_livepatch': completing unpatching transition [ 175.712575] livepatch: 'test_klp_livepatch': unpatching complete [ 175.744085] % rmmod test_klp_livepatch [ 175.808160] ===== TEST: sysfs test object/patched ===== [ 175.810980] % modprobe test_klp_callbacks_demo [ 175.812208] livepatch: enabling patch 'test_klp_callbacks_demo' [ 175.812210] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 175.812230] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 175.812231] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 176.911051] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 176.911161] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 176.911163] livepatch: 'test_klp_callbacks_demo': patching complete [ 176.934731] % modprobe test_klp_callbacks_mod [ 176.935992] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 176.935994] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 176.935996] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 176.936013] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 176.937945] % rmmod test_klp_callbacks_mod [ 176.938946] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 176.938961] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 176.938963] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 176.938964] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 176.991789] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 176.991808] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 176.991828] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 176.991830] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 178.191025] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 178.191124] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 178.191126] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 178.202777] % rmmod test_klp_callbacks_demo [ 178.318263] livepatch: kernel.ftrace_enabled = 1 [ 178.326039] ===== TEST: basic function patching ===== [ 178.328835] % modprobe test_klp_livepatch [ 178.330156] livepatch: enabling patch 'test_klp_livepatch' [ 178.330158] livepatch: 'test_klp_livepatch': initializing patching transition [ 178.331256] livepatch: 'test_klp_livepatch': starting patching transition [ 179.711061] livepatch: 'test_klp_livepatch': completing patching transition [ 179.711168] livepatch: 'test_klp_livepatch': patching complete [ 179.757176] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 179.757196] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 179.757219] livepatch: 'test_klp_livepatch': starting unpatching transition [ 180.751089] livepatch: 'test_klp_livepatch': completing unpatching transition [ 180.752537] livepatch: 'test_klp_livepatch': unpatching complete [ 180.767212] % rmmod test_klp_livepatch [ 180.830459] ===== TEST: multiple livepatches ===== [ 180.833537] % modprobe test_klp_livepatch [ 180.834932] livepatch: enabling patch 'test_klp_livepatch' [ 180.834933] livepatch: 'test_klp_livepatch': initializing patching transition [ 180.836072] livepatch: 'test_klp_livepatch': starting patching transition [ 181.711030] livepatch: 'test_klp_livepatch': completing patching transition [ 181.711129] livepatch: 'test_klp_livepatch': patching complete [ 181.753931] test_klp_livepatch: this has been live patched [ 181.758075] % modprobe test_klp_atomic_replace replace=0 [ 181.759630] livepatch: enabling patch 'test_klp_atomic_replace' [ 181.759632] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 181.760761] livepatch: 'test_klp_atomic_replace': starting patching transition [ 182.751097] livepatch: 'test_klp_atomic_replace': completing patching transition [ 182.751210] livepatch: 'test_klp_atomic_replace': patching complete [ 182.779987] test_klp_livepatch: this has been live patched [ 182.780949] test_klp_atomic_replace: this has been live patched [ 182.781132] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 182.781152] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 182.781172] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 183.711178] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 183.712627] livepatch: 'test_klp_atomic_replace': unpatching complete [ 183.791173] % rmmod test_klp_atomic_replace [ 183.881579] test_klp_livepatch: this has been live patched [ 183.882598] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 183.882616] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 183.882634] livepatch: 'test_klp_livepatch': starting unpatching transition [ 184.751183] livepatch: 'test_klp_livepatch': completing unpatching transition [ 184.752715] livepatch: 'test_klp_livepatch': unpatching complete [ 184.791884] % rmmod test_klp_livepatch [ 184.921013] ===== TEST: atomic replace livepatch ===== [ 184.924117] % modprobe test_klp_livepatch [ 184.925507] livepatch: enabling patch 'test_klp_livepatch' [ 184.925509] livepatch: 'test_klp_livepatch': initializing patching transition [ 184.926666] livepatch: 'test_klp_livepatch': starting patching transition [ 185.791155] livepatch: 'test_klp_livepatch': completing patching transition [ 185.791263] livepatch: 'test_klp_livepatch': patching complete [ 185.844460] test_klp_livepatch: this has been live patched [ 185.848202] % modprobe test_klp_atomic_replace replace=1 [ 185.849784] livepatch: enabling patch 'test_klp_atomic_replace' [ 185.849786] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 185.850899] livepatch: 'test_klp_atomic_replace': starting patching transition [ 186.751268] livepatch: 'test_klp_atomic_replace': completing patching transition [ 186.752724] livepatch: 'test_klp_atomic_replace': patching complete [ 186.769820] test_klp_atomic_replace: this has been live patched [ 186.771001] % rmmod test_klp_livepatch [ 186.842577] test_klp_atomic_replace: this has been live patched [ 186.842713] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 186.842732] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 186.842752] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 187.711155] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 187.712686] livepatch: 'test_klp_atomic_replace': unpatching complete [ 187.751949] % rmmod test_klp_atomic_replace [ 187.875356] livepatch: kernel.ftrace_enabled = 1 [ 187.883440] ===== TEST: target module before livepatch ===== [ 187.886603] % modprobe test_klp_callbacks_mod [ 187.887986] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 187.891200] % modprobe test_klp_callbacks_demo [ 187.892630] livepatch: enabling patch 'test_klp_callbacks_demo' [ 187.892632] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 187.892658] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 187.892659] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 187.892660] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 189.071175] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 189.071347] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 189.071350] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 189.071351] livepatch: 'test_klp_callbacks_demo': patching complete [ 189.113416] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 189.113437] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 189.113459] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 189.113460] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 189.113461] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 190.831161] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 190.831300] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 190.831303] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 190.831304] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 190.928590] % rmmod test_klp_callbacks_demo [ 190.981743] % rmmod test_klp_callbacks_mod [ 190.982844] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 191.068717] ===== TEST: module_coming notifier ===== [ 191.071881] % modprobe test_klp_callbacks_demo [ 191.073324] livepatch: enabling patch 'test_klp_callbacks_demo' [ 191.073326] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 191.073345] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 191.073347] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 192.761063] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 192.761166] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 192.761168] livepatch: 'test_klp_callbacks_demo': patching complete [ 192.804600] % modprobe test_klp_callbacks_mod [ 192.806035] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 192.806038] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 192.806040] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 192.806058] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 192.806411] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 192.806429] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 192.806450] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 192.806452] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 192.806453] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 193.951153] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 193.951254] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 193.951256] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 193.951257] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 194.016717] % rmmod test_klp_callbacks_demo [ 194.111640] % rmmod test_klp_callbacks_mod [ 194.112834] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 194.179536] ===== TEST: module_going notifier ===== [ 194.182529] % modprobe test_klp_callbacks_mod [ 194.183902] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 194.186979] % modprobe test_klp_callbacks_demo [ 194.188306] livepatch: enabling patch 'test_klp_callbacks_demo' [ 194.188308] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 194.188334] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 194.188336] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 194.188337] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 195.871146] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 195.871247] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 195.871248] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 195.871250] livepatch: 'test_klp_callbacks_demo': patching complete [ 195.917690] % rmmod test_klp_callbacks_mod [ 195.918839] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 195.918874] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 195.918876] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 195.918877] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 196.000811] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 196.000829] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 196.000847] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 196.000848] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 196.831134] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 196.831258] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 196.831276] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 196.909237] % rmmod test_klp_callbacks_demo [ 196.999252] ===== TEST: module_coming and module_going notifiers ===== [ 197.002219] % modprobe test_klp_callbacks_demo [ 197.003720] livepatch: enabling patch 'test_klp_callbacks_demo' [ 197.003722] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 197.003761] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 197.003762] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 197.951097] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 197.951197] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 197.951199] livepatch: 'test_klp_callbacks_demo': patching complete [ 198.023498] % modprobe test_klp_callbacks_mod [ 198.024865] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 198.024868] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 198.024870] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 198.024887] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 198.026043] % rmmod test_klp_callbacks_mod [ 198.027153] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 198.027169] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 198.027171] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 198.027172] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 198.110789] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 198.110807] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 198.110828] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 198.110830] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 199.881138] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 199.881237] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 199.881239] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 199.925505] % rmmod test_klp_callbacks_demo [ 199.999151] ===== TEST: target module not present ===== [ 200.002145] % modprobe test_klp_callbacks_demo [ 200.003699] livepatch: enabling patch 'test_klp_callbacks_demo' [ 200.003701] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 200.003721] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 200.003723] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 200.911124] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 200.911242] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 200.911244] livepatch: 'test_klp_callbacks_demo': patching complete [ 200.919249] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 200.919267] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 200.919288] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 200.919289] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 201.951160] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 201.951277] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 201.951279] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 202.028867] % rmmod test_klp_callbacks_demo [ 202.119054] ===== TEST: pre-patch callback -ENODEV ===== [ 202.122040] % modprobe test_klp_callbacks_mod [ 202.123508] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 202.123862] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 202.125317] livepatch: enabling patch 'test_klp_callbacks_demo' [ 202.125319] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 202.125341] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 202.125342] livepatch: pre-patch callback failed for object 'vmlinux' [ 202.125343] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 202.125344] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 202.125345] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 202.125496] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 202.250789] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 202.251582] % rmmod test_klp_callbacks_mod [ 202.252724] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 202.348771] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 202.351804] % modprobe test_klp_callbacks_demo [ 202.353355] livepatch: enabling patch 'test_klp_callbacks_demo' [ 202.353357] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 202.353392] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 202.353393] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 203.951197] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 203.951351] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 203.951353] livepatch: 'test_klp_callbacks_demo': patching complete [ 203.979670] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 203.980548] % modprobe test_klp_callbacks_mod [ 203.981920] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 203.981922] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 203.981924] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 203.981925] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 204.130800] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 204.130845] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 204.130862] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 204.130882] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 204.130884] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 205.951235] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 205.951341] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 205.951343] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 206.046975] % rmmod test_klp_callbacks_demo [ 206.128457] ===== TEST: multiple target modules ===== [ 206.131336] % modprobe test_klp_callbacks_busy block_transition=N [ 206.132672] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 206.132677] test_klp_callbacks_busy: busymod_work_func enter [ 206.132679] test_klp_callbacks_busy: busymod_work_func exit [ 206.135860] % modprobe test_klp_callbacks_demo [ 206.137206] livepatch: enabling patch 'test_klp_callbacks_demo' [ 206.137207] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 206.137228] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 206.137229] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 206.138577] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 207.871214] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 207.871314] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 207.871316] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 207.871318] livepatch: 'test_klp_callbacks_demo': patching complete [ 207.969934] % modprobe test_klp_callbacks_mod [ 207.971401] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 207.971404] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 207.971406] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 207.971423] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 207.972674] % rmmod test_klp_callbacks_mod [ 207.973849] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 207.973866] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 207.973868] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 207.973870] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 208.050976] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 208.050996] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 208.051017] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 208.051018] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 208.051020] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 208.911216] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 208.912965] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 208.912967] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 208.912969] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 208.959486] % rmmod test_klp_callbacks_demo [ 209.071781] % rmmod test_klp_callbacks_busy [ 209.072943] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 209.149873] ===== TEST: busy target module ===== [ 209.152833] % modprobe test_klp_callbacks_busy block_transition=Y [ 209.154258] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 209.154262] test_klp_callbacks_busy: busymod_work_func enter [ 209.157628] % modprobe test_klp_callbacks_demo [ 209.159018] livepatch: enabling patch 'test_klp_callbacks_demo' [ 209.159020] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 209.159040] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 209.159041] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 209.160430] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 209.165518] % modprobe test_klp_callbacks_mod [ 209.166893] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 209.166896] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 209.166914] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 209.168092] % rmmod test_klp_callbacks_mod [ 209.169182] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 209.169198] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 209.169200] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 209.250960] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 209.250978] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 209.251083] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 211.871203] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 211.872965] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 211.872967] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 211.872969] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 211.971835] % rmmod test_klp_callbacks_demo [ 212.051698] % rmmod test_klp_callbacks_busy [ 212.090506] test_klp_callbacks_busy: busymod_work_func exit [ 212.090513] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 212.169096] ===== TEST: multiple livepatches ===== [ 212.172221] % modprobe test_klp_callbacks_demo [ 212.173625] livepatch: enabling patch 'test_klp_callbacks_demo' [ 212.173627] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 212.173645] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 212.173646] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 213.881119] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 213.881238] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 213.881240] livepatch: 'test_klp_callbacks_demo': patching complete [ 213.904735] % modprobe test_klp_callbacks_demo2 [ 213.906252] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 213.906254] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 213.906291] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 213.906292] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 214.911228] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 214.911330] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 214.911332] livepatch: 'test_klp_callbacks_demo2': patching complete [ 214.923290] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 214.923309] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 214.923323] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 214.923324] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 215.951189] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 215.951289] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 215.951291] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 216.032305] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 216.032322] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 216.032338] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 216.032339] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 216.911208] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 216.911327] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 216.911329] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 216.941200] % rmmod test_klp_callbacks_demo2 [ 217.011815] % rmmod test_klp_callbacks_demo [ 217.089875] ===== TEST: atomic replace ===== [ 217.092945] % modprobe test_klp_callbacks_demo [ 217.094433] livepatch: enabling patch 'test_klp_callbacks_demo' [ 217.094436] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 217.094455] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 217.094457] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 217.951266] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 217.951371] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 217.951372] livepatch: 'test_klp_callbacks_demo': patching complete [ 218.014048] % modprobe test_klp_callbacks_demo2 replace=1 [ 218.015488] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 218.015491] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 218.015512] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 218.015514] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 219.631259] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 219.631381] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 219.631383] livepatch: 'test_klp_callbacks_demo2': patching complete [ 219.643212] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 219.643241] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 219.643273] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 219.643274] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 220.831217] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 220.831316] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 220.831318] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 220.853623] % rmmod test_klp_callbacks_demo2 [ 220.931690] % rmmod test_klp_callbacks_demo [ 221.032866] livepatch: kernel.ftrace_enabled = 1 [ 221.041249] ===== TEST: basic shadow variable API ===== [ 221.044342] % modprobe test_klp_shadow_vars [ 221.046005] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 221.046008] test_klp_shadow_vars: got expected NULL result [ 221.046010] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 221.046011] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 221.046015] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 221.046016] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 221.046019] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 221.046020] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 221.046022] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 221.046024] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 221.046026] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 221.046028] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 221.046030] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 221.046031] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 221.046034] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 221.046035] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 221.046036] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 221.046038] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 221.046039] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 221.046041] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 221.046042] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 221.046043] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 221.046045] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 221.046046] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 221.046047] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 221.046049] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 221.046050] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 221.046052] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 221.046054] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 221.046056] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 221.046057] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 221.046059] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 221.046061] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 221.046063] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 221.046064] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 221.046066] test_klp_shadow_vars: got expected NULL result [ 221.046067] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 221.046068] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 221.046070] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 221.046071] test_klp_shadow_vars: got expected NULL result [ 221.046072] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 221.046073] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 221.046075] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 221.046076] test_klp_shadow_vars: got expected NULL result [ 221.046077] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 221.046079] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 221.046080] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 221.046081] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 221.046083] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 221.046084] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 221.046092] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 221.046093] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 221.046094] test_klp_shadow_vars: got expected NULL result [ 221.046095] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 221.046097] test_klp_shadow_vars: got expected NULL result [ 221.046098] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 221.046099] test_klp_shadow_vars: got expected NULL result [ 221.047460] % rmmod test_klp_shadow_vars [ 221.132199] livepatch: kernel.ftrace_enabled = 1 [ 221.140198] ===== TEST: system state modification ===== [ 221.143166] % modprobe test_klp_state [ 221.144614] livepatch: enabling patch 'test_klp_state' [ 221.144616] livepatch: 'test_klp_state': initializing patching transition [ 221.144637] test_klp_state: pre_patch_callback: vmlinux [ 221.144638] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 221.144639] livepatch: 'test_klp_state': starting patching transition [ 222.111272] livepatch: 'test_klp_state': completing patching transition [ 222.111377] test_klp_state: post_patch_callback: vmlinux [ 222.111379] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 222.111381] livepatch: 'test_klp_state': patching complete [ 222.162434] % echo 0 > /sys/kernel/livepatch/test_klp_state/enabled [ 222.162453] livepatch: 'test_klp_state': initializing unpatching transition [ 222.162474] test_klp_state: pre_unpatch_callback: vmlinux [ 222.162476] test_klp_state: restore_console_loglevel: restoring console_loglevel [ 222.162477] livepatch: 'test_klp_state': starting unpatching transition [ 223.951243] livepatch: 'test_klp_state': completing unpatching transition [ 223.951343] test_klp_state: post_unpatch_callback: vmlinux [ 223.951345] test_klp_state: free_loglevel_state: freeing space for the stored console_loglevel [ 223.951346] livepatch: 'test_klp_state': unpatching complete [ 223.978524] % rmmod test_klp_state [ 224.049861] ===== TEST: taking over system state modification ===== [ 224.052982] % modprobe test_klp_state [ 224.054535] livepatch: enabling patch 'test_klp_state' [ 224.054537] livepatch: 'test_klp_state': initializing patching transition [ 224.054558] test_klp_state: pre_patch_callback: vmlinux [ 224.054559] test_klp_state: allocate_loglevel_state: allocating space to store console_loglevel [ 224.054561] livepatch: 'test_klp_state': starting patching transition [ 224.921252] livepatch: 'test_klp_state': completing patching transition [ 224.921353] test_klp_state: post_patch_callback: vmlinux [ 224.921355] test_klp_state: fix_console_loglevel: fixing console_loglevel [ 224.921357] livepatch: 'test_klp_state': patching complete [ 224.974637] % modprobe test_klp_state2 [ 224.976246] livepatch: enabling patch 'test_klp_state2' [ 224.976248] livepatch: 'test_klp_state2': initializing patching transition [ 224.976275] test_klp_state2: pre_patch_callback: vmlinux [ 224.976276] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 224.976278] livepatch: 'test_klp_state2': starting patching transition [ 226.031256] livepatch: 'test_klp_state2': completing patching transition [ 226.031388] test_klp_state2: post_patch_callback: vmlinux [ 226.031389] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 226.031390] livepatch: 'test_klp_state2': patching complete [ 226.097150] % rmmod test_klp_state [ 226.170953] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 226.170972] livepatch: 'test_klp_state2': initializing unpatching transition [ 226.170994] test_klp_state2: pre_unpatch_callback: vmlinux [ 226.170995] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 226.170996] livepatch: 'test_klp_state2': starting unpatching transition [ 227.951209] livepatch: 'test_klp_state2': completing unpatching transition [ 227.951314] test_klp_state2: post_unpatch_callback: vmlinux [ 227.951317] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 227.951318] livepatch: 'test_klp_state2': unpatching complete [ 227.987229] % rmmod test_klp_state2 [ 228.048401] ===== TEST: compatible cumulative livepatches ===== [ 228.051472] % modprobe test_klp_state2 [ 228.052836] livepatch: enabling patch 'test_klp_state2' [ 228.052839] livepatch: 'test_klp_state2': initializing patching transition [ 228.052858] test_klp_state2: pre_patch_callback: vmlinux [ 228.052860] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 228.052861] livepatch: 'test_klp_state2': starting patching transition [ 229.071292] livepatch: 'test_klp_state2': completing patching transition [ 229.071407] test_klp_state2: post_patch_callback: vmlinux [ 229.071409] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 229.071410] livepatch: 'test_klp_state2': patching complete [ 229.174501] % modprobe test_klp_state3 [ 229.175964] livepatch: enabling patch 'test_klp_state3' [ 229.175966] livepatch: 'test_klp_state3': initializing patching transition [ 229.175984] test_klp_state3: pre_patch_callback: vmlinux [ 229.175985] test_klp_state3: allocate_loglevel_state: space to store console_loglevel already allocated [ 229.175986] livepatch: 'test_klp_state3': starting patching transition [ 230.031287] livepatch: 'test_klp_state3': completing patching transition [ 230.031407] test_klp_state3: post_patch_callback: vmlinux [ 230.031409] test_klp_state3: fix_console_loglevel: taking over the console_loglevel change [ 230.031410] livepatch: 'test_klp_state3': patching complete [ 230.092633] % rmmod test_klp_state2 [ 230.174017] % modprobe test_klp_state2 [ 230.175415] livepatch: enabling patch 'test_klp_state2' [ 230.175416] livepatch: 'test_klp_state2': initializing patching transition [ 230.175437] test_klp_state2: pre_patch_callback: vmlinux [ 230.175438] test_klp_state2: allocate_loglevel_state: space to store console_loglevel already allocated [ 230.175453] livepatch: 'test_klp_state2': starting patching transition [ 231.871289] livepatch: 'test_klp_state2': completing patching transition [ 231.871392] test_klp_state2: post_patch_callback: vmlinux [ 231.871393] test_klp_state2: fix_console_loglevel: taking over the console_loglevel change [ 231.871394] livepatch: 'test_klp_state2': patching complete [ 231.902873] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 231.902893] livepatch: 'test_klp_state2': initializing unpatching transition [ 231.902909] test_klp_state2: pre_unpatch_callback: vmlinux [ 231.902910] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 231.902911] livepatch: 'test_klp_state2': starting unpatching transition [ 232.831270] livepatch: 'test_klp_state2': completing unpatching transition [ 232.831371] test_klp_state2: post_unpatch_callback: vmlinux [ 232.831373] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 232.831374] livepatch: 'test_klp_state2': unpatching complete [ 232.912312] % rmmod test_klp_state2 [ 232.961704] % rmmod test_klp_state3 [ 233.039460] ===== TEST: incompatible cumulative livepatches ===== [ 233.042189] % modprobe test_klp_state2 [ 233.043520] livepatch: enabling patch 'test_klp_state2' [ 233.043522] livepatch: 'test_klp_state2': initializing patching transition [ 233.043542] test_klp_state2: pre_patch_callback: vmlinux [ 233.043543] test_klp_state2: allocate_loglevel_state: allocating space to store console_loglevel [ 233.043545] livepatch: 'test_klp_state2': starting patching transition [ 234.191241] livepatch: 'test_klp_state2': completing patching transition [ 234.191348] test_klp_state2: post_patch_callback: vmlinux [ 234.191365] test_klp_state2: fix_console_loglevel: fixing console_loglevel [ 234.191368] livepatch: 'test_klp_state2': patching complete [ 234.263631] % modprobe test_klp_state [ 234.265068] livepatch: Livepatch patch (test_klp_state) is not compatible with the already installed livepatches. [ 234.380932] modprobe: ERROR: could not insert 'test_klp_state': Invalid argument [ 234.380979] % echo 0 > /sys/kernel/livepatch/test_klp_state2/enabled [ 234.380997] livepatch: 'test_klp_state2': initializing unpatching transition [ 234.381018] test_klp_state2: pre_unpatch_callback: vmlinux [ 234.381019] test_klp_state2: restore_console_loglevel: restoring console_loglevel [ 234.381020] livepatch: 'test_klp_state2': starting unpatching transition [ 235.951273] livepatch: 'test_klp_state2': completing unpatching transition [ 235.951373] test_klp_state2: post_unpatch_callback: vmlinux [ 235.951375] test_klp_state2: free_loglevel_state: freeing space for the stored console_loglevel [ 235.951376] livepatch: 'test_klp_state2': unpatching complete [ 235.994953] % rmmod test_klp_state2 [ 236.093180] livepatch: kernel.ftrace_enabled = 1 [ 236.101310] ===== TEST: livepatch interaction with ftrace_enabled sysctl ===== [ 236.102950] livepatch: kernel.ftrace_enabled = 0 [ 236.103030] % modprobe test_klp_livepatch [ 236.104411] livepatch: enabling patch 'test_klp_livepatch' [ 236.104414] livepatch: 'test_klp_livepatch': initializing patching transition [ 236.104437] livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) [ 236.104439] livepatch: failed to patch object 'vmlinux' [ 236.104440] livepatch: failed to enable patch 'test_klp_livepatch' [ 236.104441] livepatch: 'test_klp_livepatch': canceling patching transition, going to unpatch [ 236.104442] livepatch: 'test_klp_livepatch': completing unpatching transition [ 236.104560] livepatch: 'test_klp_livepatch': unpatching complete [ 236.260929] modprobe: ERROR: could not insert 'test_klp_livepatch': Device or resource busy [ 236.262507] livepatch: kernel.ftrace_enabled = 1 [ 236.265215] % modprobe test_klp_livepatch [ 236.266486] livepatch: enabling patch 'test_klp_livepatch' [ 236.266488] livepatch: 'test_klp_livepatch': initializing patching transition [ 236.267596] livepatch: 'test_klp_livepatch': starting patching transition [ 237.791212] livepatch: 'test_klp_livepatch': completing patching transition [ 237.791310] livepatch: 'test_klp_livepatch': patching complete [ 237.797154] livepatch: sysctl: setting key "kernel.ftrace_enabled": Device or resource busy [ 237.798043] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 237.798095] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 237.798109] livepatch: 'test_klp_livepatch': starting unpatching transition [ 238.831322] livepatch: 'test_klp_livepatch': completing unpatching transition [ 238.832826] livepatch: 'test_klp_livepatch': unpatching complete [ 238.908640] % rmmod test_klp_livepatch [ 238.992263] livepatch: kernel.ftrace_enabled = 1 [ 238.999933] ===== TEST: sysfs test ===== [ 239.002807] % modprobe test_klp_livepatch [ 239.004110] livepatch: enabling patch 'test_klp_livepatch' [ 239.004111] livepatch: 'test_klp_livepatch': initializing patching transition [ 239.005181] livepatch: 'test_klp_livepatch': starting patching transition [ 240.111262] livepatch: 'test_klp_livepatch': completing patching transition [ 240.111381] livepatch: 'test_klp_livepatch': patching complete [ 240.132783] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 240.132799] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 240.132815] livepatch: 'test_klp_livepatch': starting unpatching transition [ 241.081328] livepatch: 'test_klp_livepatch': completing unpatching transition [ 241.082831] livepatch: 'test_klp_livepatch': unpatching complete [ 241.142598] % rmmod test_klp_livepatch [ 241.210158] ===== TEST: sysfs test object/patched ===== [ 241.213283] % modprobe test_klp_callbacks_demo [ 241.214762] livepatch: enabling patch 'test_klp_callbacks_demo' [ 241.214764] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 241.214784] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 241.214785] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 242.031320] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 242.031449] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 242.031451] livepatch: 'test_klp_callbacks_demo': patching complete [ 242.136182] % modprobe test_klp_callbacks_mod [ 242.137515] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 242.137517] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 242.137519] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 242.137535] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 242.139783] % rmmod test_klp_callbacks_mod [ 242.140942] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 242.140957] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 242.140959] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 242.140960] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 242.231991] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 242.232011] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 242.232030] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 242.232032] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 243.071322] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 243.071422] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 243.071424] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 243.141124] % rmmod test_klp_callbacks_demo [ 243.282256] livepatch: kernel.ftrace_enabled = 1 [ 243.290569] ===== TEST: basic function patching ===== [ 243.293596] % modprobe test_klp_livepatch [ 243.295013] livepatch: enabling patch 'test_klp_livepatch' [ 243.295016] livepatch: 'test_klp_livepatch': initializing patching transition [ 243.296162] livepatch: 'test_klp_livepatch': starting patching transition [ 244.911383] livepatch: 'test_klp_livepatch': completing patching transition [ 244.911489] livepatch: 'test_klp_livepatch': patching complete [ 244.924091] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 244.924112] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 244.924134] livepatch: 'test_klp_livepatch': starting unpatching transition [ 245.871319] livepatch: 'test_klp_livepatch': completing unpatching transition [ 245.872799] livepatch: 'test_klp_livepatch': unpatching complete [ 245.934000] % rmmod test_klp_livepatch [ 246.029530] ===== TEST: multiple livepatches ===== [ 246.032436] % modprobe test_klp_livepatch [ 246.033861] livepatch: enabling patch 'test_klp_livepatch' [ 246.033863] livepatch: 'test_klp_livepatch': initializing patching transition [ 246.034968] livepatch: 'test_klp_livepatch': starting patching transition [ 247.711339] livepatch: 'test_klp_livepatch': completing patching transition [ 247.711489] livepatch: 'test_klp_livepatch': patching complete [ 247.763427] test_klp_livepatch: this has been live patched [ 247.767396] % modprobe test_klp_atomic_replace replace=0 [ 247.768853] livepatch: enabling patch 'test_klp_atomic_replace' [ 247.768854] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 247.769960] livepatch: 'test_klp_atomic_replace': starting patching transition [ 248.751335] livepatch: 'test_klp_atomic_replace': completing patching transition [ 248.751471] livepatch: 'test_klp_atomic_replace': patching complete [ 248.788134] test_klp_livepatch: this has been live patched [ 248.789014] test_klp_atomic_replace: this has been live patched [ 248.789161] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 248.789181] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 248.789197] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 249.711272] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 249.712588] livepatch: 'test_klp_atomic_replace': unpatching complete [ 249.798070] % rmmod test_klp_atomic_replace [ 249.851728] test_klp_livepatch: this has been live patched [ 249.852707] % echo 0 > /sys/kernel/livepatch/test_klp_livepatch/enabled [ 249.852727] livepatch: 'test_klp_livepatch': initializing unpatching transition [ 249.852745] livepatch: 'test_klp_livepatch': starting unpatching transition [ 250.751345] livepatch: 'test_klp_livepatch': completing unpatching transition [ 250.752836] livepatch: 'test_klp_livepatch': unpatching complete [ 250.761513] % rmmod test_klp_livepatch [ 250.851360] ===== TEST: atomic replace livepatch ===== [ 250.854431] % modprobe test_klp_livepatch [ 250.855791] livepatch: enabling patch 'test_klp_livepatch' [ 250.855793] livepatch: 'test_klp_livepatch': initializing patching transition [ 250.856996] livepatch: 'test_klp_livepatch': starting patching transition [ 251.711343] livepatch: 'test_klp_livepatch': completing patching transition [ 251.711461] livepatch: 'test_klp_livepatch': patching complete [ 251.773219] test_klp_livepatch: this has been live patched [ 251.777357] % modprobe test_klp_atomic_replace replace=1 [ 251.778873] livepatch: enabling patch 'test_klp_atomic_replace' [ 251.778875] livepatch: 'test_klp_atomic_replace': initializing patching transition [ 251.780049] livepatch: 'test_klp_atomic_replace': starting patching transition [ 252.911301] livepatch: 'test_klp_atomic_replace': completing patching transition [ 252.912669] livepatch: 'test_klp_atomic_replace': patching complete [ 253.001881] test_klp_atomic_replace: this has been live patched [ 253.002864] % rmmod test_klp_livepatch [ 253.052447] test_klp_atomic_replace: this has been live patched [ 253.052561] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 253.052580] livepatch: 'test_klp_atomic_replace': initializing unpatching transition [ 253.052597] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 253.871341] livepatch: 'test_klp_atomic_replace': completing unpatching transition [ 253.872934] livepatch: 'test_klp_atomic_replace': unpatching complete [ 253.961071] % rmmod test_klp_atomic_replace [ 254.075347] livepatch: kernel.ftrace_enabled = 1 [ 254.083375] ===== TEST: target module before livepatch ===== [ 254.086470] % modprobe test_klp_callbacks_mod [ 254.087750] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 254.091112] % modprobe test_klp_callbacks_demo [ 254.092572] livepatch: enabling patch 'test_klp_callbacks_demo' [ 254.092574] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 254.092593] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 254.092594] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 254.092595] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 254.911372] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 254.911470] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 254.911472] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 254.911474] livepatch: 'test_klp_callbacks_demo': patching complete [ 255.008950] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 255.008969] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 255.009000] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 255.009002] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 255.009020] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 255.951355] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 255.951452] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 255.951454] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 255.951456] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 256.018607] % rmmod test_klp_callbacks_demo [ 256.091916] % rmmod test_klp_callbacks_mod [ 256.093014] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 256.169237] ===== TEST: module_coming notifier ===== [ 256.172297] % modprobe test_klp_callbacks_demo [ 256.173751] livepatch: enabling patch 'test_klp_callbacks_demo' [ 256.173753] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 256.173772] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 256.173774] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 257.871420] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 257.871550] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 257.871552] livepatch: 'test_klp_callbacks_demo': patching complete [ 257.906694] % modprobe test_klp_callbacks_mod [ 257.907956] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 257.907958] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 257.907959] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 257.907977] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 257.908350] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 257.908367] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 257.908387] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 257.908388] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 257.908390] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 258.911396] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 258.911552] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 258.911554] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 258.911556] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 258.918270] % rmmod test_klp_callbacks_demo [ 259.001970] % rmmod test_klp_callbacks_mod [ 259.002953] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 259.118512] ===== TEST: module_going notifier ===== [ 259.121469] % modprobe test_klp_callbacks_mod [ 259.122753] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 259.125852] % modprobe test_klp_callbacks_demo [ 259.127258] livepatch: enabling patch 'test_klp_callbacks_demo' [ 259.127259] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 259.127280] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 259.127281] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 259.127282] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 260.191345] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 260.191448] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 260.191449] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 260.191451] livepatch: 'test_klp_callbacks_demo': patching complete [ 260.248083] % rmmod test_klp_callbacks_mod [ 260.249312] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 260.249330] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 260.249332] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 260.249333] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 260.311104] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 260.311123] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 260.311150] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 260.311151] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 261.151436] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 261.151581] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 261.151583] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 261.220008] % rmmod test_klp_callbacks_demo [ 261.309304] ===== TEST: module_coming and module_going notifiers ===== [ 261.312251] % modprobe test_klp_callbacks_demo [ 261.313722] livepatch: enabling patch 'test_klp_callbacks_demo' [ 261.313724] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 261.313762] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 261.313763] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 262.671500] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 262.671624] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 262.671626] livepatch: 'test_klp_callbacks_demo': patching complete [ 262.742090] % modprobe test_klp_callbacks_mod [ 262.743321] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 262.743324] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 262.743326] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 262.743344] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 262.744479] % rmmod test_klp_callbacks_mod [ 262.745567] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 262.745582] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 262.745584] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 262.745585] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 262.811091] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 262.811109] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 262.811130] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 262.811131] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 263.951430] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 263.951537] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 263.951539] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 264.022343] % rmmod test_klp_callbacks_demo [ 264.179776] ===== TEST: target module not present ===== [ 264.182883] % modprobe test_klp_callbacks_demo [ 264.184345] livepatch: enabling patch 'test_klp_callbacks_demo' [ 264.184347] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 264.184367] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 264.184368] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 265.081369] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 265.081514] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 265.081516] livepatch: 'test_klp_callbacks_demo': patching complete [ 265.101043] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 265.101062] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 265.101083] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 265.101084] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 266.191411] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 266.191510] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 266.191512] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 266.211817] % rmmod test_klp_callbacks_demo [ 266.279575] ===== TEST: pre-patch callback -ENODEV ===== [ 266.282491] % modprobe test_klp_callbacks_mod [ 266.283760] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 266.284111] % modprobe test_klp_callbacks_demo pre_patch_ret=-19 [ 266.285525] livepatch: enabling patch 'test_klp_callbacks_demo' [ 266.285527] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 266.285548] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 266.285549] livepatch: pre-patch callback failed for object 'vmlinux' [ 266.285550] livepatch: failed to enable patch 'test_klp_callbacks_demo' [ 266.285551] livepatch: 'test_klp_callbacks_demo': canceling patching transition, going to unpatch [ 266.285552] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 266.285659] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 266.481071] modprobe: ERROR: could not insert 'test_klp_callbacks_demo': No such device [ 266.482054] % rmmod test_klp_callbacks_mod [ 266.483170] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 266.569358] ===== TEST: module_coming + pre-patch callback -ENODEV ===== [ 266.572523] % modprobe test_klp_callbacks_demo [ 266.573921] livepatch: enabling patch 'test_klp_callbacks_demo' [ 266.573924] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 266.573963] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 266.573965] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 268.031434] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 268.031535] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 268.031537] livepatch: 'test_klp_callbacks_demo': patching complete [ 268.100668] % echo -19 > /sys/module/test_klp_callbacks_demo/parameters/pre_patch_ret [ 268.101662] % modprobe test_klp_callbacks_mod [ 268.102985] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 268.102988] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 268.102990] livepatch: pre-patch callback failed for object 'test_klp_callbacks_mod' [ 268.102991] livepatch: patch 'test_klp_callbacks_demo' failed for module 'test_klp_callbacks_mod', refusing to load module 'test_klp_callbacks_mod' [ 268.231087] modprobe: ERROR: could not insert 'test_klp_callbacks_mod': No such device [ 268.231141] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 268.231156] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 268.231176] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 268.231177] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 269.951417] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 269.951520] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 269.951522] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 270.048128] % rmmod test_klp_callbacks_demo [ 270.110260] ===== TEST: multiple target modules ===== [ 270.113377] % modprobe test_klp_callbacks_busy block_transition=N [ 270.114847] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 270.114851] test_klp_callbacks_busy: busymod_work_func enter [ 270.114853] test_klp_callbacks_busy: busymod_work_func exit [ 270.118456] % modprobe test_klp_callbacks_demo [ 270.119920] livepatch: enabling patch 'test_klp_callbacks_demo' [ 270.119922] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 270.119941] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 270.119943] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 270.121350] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 271.871484] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 271.871585] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 271.871587] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 271.871589] livepatch: 'test_klp_callbacks_demo': patching complete [ 271.957226] % modprobe test_klp_callbacks_mod [ 271.958646] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 271.958665] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 271.958667] test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 271.958683] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 271.960010] % rmmod test_klp_callbacks_mod [ 271.961127] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 271.961141] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 271.961143] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 271.961145] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 272.031267] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 272.031285] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 272.031303] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 272.031304] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 272.031306] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 272.831467] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 272.833230] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 272.833232] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 272.833233] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 272.839688] % rmmod test_klp_callbacks_demo [ 272.912113] % rmmod test_klp_callbacks_busy [ 272.913268] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 272.989731] ===== TEST: busy target module ===== [ 272.992863] % modprobe test_klp_callbacks_busy block_transition=Y [ 272.994427] test_klp_callbacks_busy: test_klp_callbacks_busy_init [ 272.994433] test_klp_callbacks_busy: busymod_work_func enter [ 272.997897] % modprobe test_klp_callbacks_demo [ 272.999390] livepatch: enabling patch 'test_klp_callbacks_demo' [ 272.999391] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 272.999413] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 272.999415] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 273.000863] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 273.006166] % modprobe test_klp_callbacks_mod [ 273.007622] livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod' [ 273.007624] test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init [ 273.007651] test_klp_callbacks_mod: test_klp_callbacks_mod_init [ 273.009014] % rmmod test_klp_callbacks_mod [ 273.010123] test_klp_callbacks_mod: test_klp_callbacks_mod_exit [ 273.010139] livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' [ 273.010141] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away [ 273.091251] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 273.091269] livepatch: 'test_klp_callbacks_demo': reversing transition from patching to unpatching [ 273.091425] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 275.791451] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 275.793206] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 275.793209] test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_busy -> [MODULE_STATE_LIVE] Normal state [ 275.793210] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 275.815309] % rmmod test_klp_callbacks_demo [ 275.882051] % rmmod test_klp_callbacks_busy [ 275.890764] test_klp_callbacks_busy: busymod_work_func exit [ 275.890773] test_klp_callbacks_busy: test_klp_callbacks_busy_exit [ 275.959816] ===== TEST: multiple livepatches ===== [ 275.963029] % modprobe test_klp_callbacks_demo [ 275.964604] livepatch: enabling patch 'test_klp_callbacks_demo' [ 275.964606] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 275.964628] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 275.964629] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 277.641504] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 277.641611] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 277.641613] livepatch: 'test_klp_callbacks_demo': patching complete [ 277.698468] % modprobe test_klp_callbacks_demo2 [ 277.700098] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 277.700100] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 277.700119] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 277.700120] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 278.681475] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 278.681615] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 278.681617] livepatch: 'test_klp_callbacks_demo2': patching complete [ 278.719462] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 278.719482] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 278.719504] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 278.719505] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 279.791389] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 279.791487] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 279.791489] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 279.829592] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled [ 279.829612] livepatch: 'test_klp_callbacks_demo': initializing unpatching transition [ 279.829629] test_klp_callbacks_demo: pre_unpatch_callback: vmlinux [ 279.829630] livepatch: 'test_klp_callbacks_demo': starting unpatching transition [ 280.831497] livepatch: 'test_klp_callbacks_demo': completing unpatching transition [ 280.831602] test_klp_callbacks_demo: post_unpatch_callback: vmlinux [ 280.831604] livepatch: 'test_klp_callbacks_demo': unpatching complete [ 280.839540] % rmmod test_klp_callbacks_demo2 [ 280.912127] % rmmod test_klp_callbacks_demo [ 280.989065] ===== TEST: atomic replace ===== [ 280.991951] % modprobe test_klp_callbacks_demo [ 280.993414] livepatch: enabling patch 'test_klp_callbacks_demo' [ 280.993416] livepatch: 'test_klp_callbacks_demo': initializing patching transition [ 280.993436] test_klp_callbacks_demo: pre_patch_callback: vmlinux [ 280.993437] livepatch: 'test_klp_callbacks_demo': starting patching transition [ 281.871479] livepatch: 'test_klp_callbacks_demo': completing patching transition [ 281.871579] test_klp_callbacks_demo: post_patch_callback: vmlinux [ 281.871581] livepatch: 'test_klp_callbacks_demo': patching complete [ 281.912919] % modprobe test_klp_callbacks_demo2 replace=1 [ 281.914353] livepatch: enabling patch 'test_klp_callbacks_demo2' [ 281.914356] livepatch: 'test_klp_callbacks_demo2': initializing patching transition [ 281.914376] test_klp_callbacks_demo2: pre_patch_callback: vmlinux [ 281.914377] livepatch: 'test_klp_callbacks_demo2': starting patching transition [ 283.071478] livepatch: 'test_klp_callbacks_demo2': completing patching transition [ 283.071583] test_klp_callbacks_demo2: post_patch_callback: vmlinux [ 283.071585] livepatch: 'test_klp_callbacks_demo2': patching complete [ 283.135341] % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo2/enabled [ 283.135361] livepatch: 'test_klp_callbacks_demo2': initializing unpatching transition [ 283.135381] test_klp_callbacks_demo2: pre_unpatch_callback: vmlinux [ 283.135382] livepatch: 'test_klp_callbacks_demo2': starting unpatching transition [ 284.031462] livepatch: 'test_klp_callbacks_demo2': completing unpatching transition [ 284.031579] test_klp_callbacks_demo2: post_unpatch_callback: vmlinux [ 284.031580] livepatch: 'test_klp_callbacks_demo2': unpatching complete [ 284.044328] % rmmod test_klp_callbacks_demo2 [ 284.112113] % rmmod test_klp_callbacks_demo [ 284.224335] livepatch: kernel.ftrace_enabled = 1 [ 284.232921] ===== TEST: basic shadow variable API ===== [ 284.235963] % modprobe test_klp_shadow_vars [ 284.237528] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 284.237531] test_klp_shadow_vars: got expected NULL result [ 284.237533] test_klp_shadow_vars: shadow_ctor: PTR3 -> PTR2 [ 284.237535] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 284.237538] test_klp_shadow_vars: shadow_ctor: PTR6 -> PTR5 [ 284.237539] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6 [ 284.237542] test_klp_shadow_vars: shadow_ctor: PTR8 -> PTR7 [ 284.237543] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 284.237545] test_klp_shadow_vars: shadow_ctor: PTR11 -> PTR10 [ 284.237547] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11 [ 284.237549] test_klp_shadow_vars: shadow_ctor: PTR13 -> PTR12 [ 284.237550] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 284.237553] test_klp_shadow_vars: shadow_ctor: PTR16 -> PTR15 [ 284.237554] test_klp_shadow_vars: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16 [ 284.237556] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3 [ 284.237558] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 284.237559] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 284.237561] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 284.237562] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8 [ 284.237564] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 284.237565] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 284.237566] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 284.237567] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13 [ 284.237569] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 284.237570] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 284.237571] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 284.237573] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3 [ 284.237575] test_klp_shadow_vars: got expected PTR3 -> PTR2 result [ 284.237576] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8 [ 284.237579] test_klp_shadow_vars: got expected PTR8 -> PTR7 result [ 284.237580] test_klp_shadow_vars: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13 [ 284.237582] test_klp_shadow_vars: got expected PTR13 -> PTR12 result [ 284.237583] test_klp_shadow_vars: shadow_dtor(obj=PTR1, shadow_data=PTR3) [ 284.237585] test_klp_shadow_vars: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17) [ 284.237587] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0 [ 284.237588] test_klp_shadow_vars: got expected NULL result [ 284.237589] test_klp_shadow_vars: shadow_dtor(obj=PTR9, shadow_data=PTR8) [ 284.237590] test_klp_shadow_vars: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17) [ 284.237592] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0 [ 284.237593] test_klp_shadow_vars: got expected NULL result [ 284.237594] test_klp_shadow_vars: shadow_dtor(obj=PTR14, shadow_data=PTR13) [ 284.237596] test_klp_shadow_vars: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17) [ 284.237597] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0 [ 284.237598] test_klp_shadow_vars: got expected NULL result [ 284.237599] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6 [ 284.237601] test_klp_shadow_vars: got expected PTR6 -> PTR5 result [ 284.237602] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11 [ 284.237603] test_klp_shadow_vars: got expected PTR11 -> PTR10 result [ 284.237604] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16 [ 284.237606] test_klp_shadow_vars: got expected PTR16 -> PTR15 result [ 284.237615] test_klp_shadow_vars: klp_shadow_free_all(id=0x1235, dtor=PTR0) [ 284.237616] test_klp_shadow_vars: klp_shadow_get(obj=PTR1, id=0x1235) = PTR0 [ 284.237617] test_klp_shadow_vars: got expected NULL result [ 284.237618] test_klp_shadow_vars: klp_shadow_get(obj=PTR9, id=0x1235) = PTR0 [ 284.237620] test_klp_shadow_vars: got expected NULL result [ 284.237620] test_klp_shadow_vars: klp_shadow_get(obj=PTR14, id=0x1235) = PTR0 [ 284.237622] test_klp_shadow_vars: got expected NULL result [ 284.238829] % rmmod test_klp_shadow_vars [ 98.820331] livepatch: 'test_klp_state2': starting patching transition [ 100.031067] livepatch: 'test_klp_state2': completing patching transition [ 284.224335] livepatch: kernel.ftrace_enabled = 1 [ 100.031067] livepatch: 'test_klp_state2': completing patching transition [ 284.224335] livepatch: kernel.ftrace_enabled = 1 [ 284.232921] ===== TEST: basic shadow variable API =====