| Message ID | 20220505182645.497868-12-ebiederm@xmission.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere, archived |
| Headers | show |
| Series | ptrace: cleaning up ptrace_stop | expand |
On Thu, May 05, 2022 at 01:26:45PM -0500, Eric W. Biederman wrote: > From: Peter Zijlstra <peterz@infradead.org> > > Currently ptrace_stop() / do_signal_stop() rely on the special states > TASK_TRACED and TASK_STOPPED resp. to keep unique state. That is, this > state exists only in task->__state and nowhere else. > > There's two spots of bother with this: > > - PREEMPT_RT has task->saved_state which complicates matters, > meaning task_is_{traced,stopped}() needs to check an additional > variable. > > - An alternative freezer implementation that itself relies on a > special TASK state would loose TASK_TRACED/TASK_STOPPED and will > result in misbehaviour. > > As such, add additional state to task->jobctl to track this state > outside of task->__state. > > NOTE: this doesn't actually fix anything yet, just adds extra state. > > --EWB > * didn't add a unnecessary newline in signal.h > * Update t->jobctl in signal_wake_up and ptrace_signal_wake_up > instead of in signal_wake_up_state. This prevents the clearing > of TASK_STOPPED and TASK_TRACED from getting lost. > * Added warnings if JOBCTL_STOPPED or JOBCTL_TRACED are not cleared Hi Eric, Peter, On s390 this patch triggers warning at kernel/ptrace.c:272 when kill_child testcase from strace tool is repeatedly used (the source is attached for reference): while :; do strace -f -qq -e signal=none -e trace=sched_yield,/kill ./kill_child done It normally takes few minutes to cause the warning in -rc3, but FWIW it hits almost immediately for ptrace_stop-cleanup-for-v5.19 tag of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace. Commit 7b0fe1367ef2 ("ptrace: Document that wait_task_inactive can't fail") suggests this WARN_ON_ONCE() is not really expected, yet we observe a child in __TASK_TRACED state. Could you please comment here? Thanks! /* * Check for the corner case that previously lead to segfault * due to an attempt to access unitialised tcp->s_ent. * * 13994 ????( <unfinished ...> * ... * 13994 <... ???? resumed>) = ? * * Copyright (c) 2019 The strace developers. * All rights reserved. * * SPDX-License-Identifier: GPL-2.0-or-later */ #include "tests.h" #include <sched.h> #include <signal.h> #include <unistd.h> #include <sys/mman.h> #include <sys/wait.h> #define ITERS 10000 #define SC_ITERS 10000 int main(void) { volatile sig_atomic_t *const mem = mmap(NULL, get_page_size(), PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); if (mem == MAP_FAILED) perror_msg_and_fail("mmap"); for (unsigned int i = 0; i < ITERS; ++i) { mem[0] = mem[1] = 0; const pid_t pid = fork(); if (pid < 0) perror_msg_and_fail("fork"); if (!pid) { /* wait for the parent */ while (!mem[0]) ; /* let the parent know we are running */ mem[1] = 1; for (unsigned int j = 0; j < SC_ITERS; j++) sched_yield(); pause(); return 0; } /* let the child know we are running */ mem[0] = 1; /* wait for the child */ while (!mem[1]) ; if (kill(pid, SIGKILL)) perror_msg_and_fail("kill"); if (wait(NULL) != pid) perror_msg_and_fail("wait"); } return 0; }
Alexander Gordeev <agordeev@linux.ibm.com> writes: > On Thu, May 05, 2022 at 01:26:45PM -0500, Eric W. Biederman wrote: >> From: Peter Zijlstra <peterz@infradead.org> >> >> Currently ptrace_stop() / do_signal_stop() rely on the special states >> TASK_TRACED and TASK_STOPPED resp. to keep unique state. That is, this >> state exists only in task->__state and nowhere else. >> >> There's two spots of bother with this: >> >> - PREEMPT_RT has task->saved_state which complicates matters, >> meaning task_is_{traced,stopped}() needs to check an additional >> variable. >> >> - An alternative freezer implementation that itself relies on a >> special TASK state would loose TASK_TRACED/TASK_STOPPED and will >> result in misbehaviour. >> >> As such, add additional state to task->jobctl to track this state >> outside of task->__state. >> >> NOTE: this doesn't actually fix anything yet, just adds extra state. >> >> --EWB >> * didn't add a unnecessary newline in signal.h >> * Update t->jobctl in signal_wake_up and ptrace_signal_wake_up >> instead of in signal_wake_up_state. This prevents the clearing >> of TASK_STOPPED and TASK_TRACED from getting lost. >> * Added warnings if JOBCTL_STOPPED or JOBCTL_TRACED are not cleared > > Hi Eric, Peter, > > On s390 this patch triggers warning at kernel/ptrace.c:272 when > kill_child testcase from strace tool is repeatedly used (the source > is attached for reference): > > while :; do > strace -f -qq -e signal=none -e trace=sched_yield,/kill ./kill_child > done > > It normally takes few minutes to cause the warning in -rc3, but FWIW > it hits almost immediately for ptrace_stop-cleanup-for-v5.19 tag of > git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace. > > Commit 7b0fe1367ef2 ("ptrace: Document that wait_task_inactive can't > fail") suggests this WARN_ON_ONCE() is not really expected, yet we > observe a child in __TASK_TRACED state. Could you please comment here? > For clarity the warning is that the child is not in __TASK_TRACED state. The code is waiting for the code to stop in the scheduler in the __TASK_TRACED state so that it can safely read and change the processes state. Some of that state is not even saved until the process is scheduled out so we have to wait until the process is stopped in the scheduler. At least on s390 it looks like there is a race between SIGKILL and ptrace_check_attach. That isn't good. Reading the code below there is something missing because I don't see anything making ptrace calls, and ptrace_check_attach (which contains the warning) only happens in the ptrace syscall. Eric > Thanks! > > /* > * Check for the corner case that previously lead to segfault > * due to an attempt to access unitialised tcp->s_ent. > * > * 13994 ????( <unfinished ...> > * ... > * 13994 <... ???? resumed>) = ? > * > * Copyright (c) 2019 The strace developers. > * All rights reserved. > * > * SPDX-License-Identifier: GPL-2.0-or-later > */ > > #include "tests.h" > > #include <sched.h> > #include <signal.h> > #include <unistd.h> > #include <sys/mman.h> > #include <sys/wait.h> > > #define ITERS 10000 > #define SC_ITERS 10000 > > int > main(void) > { > volatile sig_atomic_t *const mem = > mmap(NULL, get_page_size(), PROT_READ | PROT_WRITE, > MAP_SHARED | MAP_ANONYMOUS, -1, 0); > if (mem == MAP_FAILED) > perror_msg_and_fail("mmap"); > > for (unsigned int i = 0; i < ITERS; ++i) { > mem[0] = mem[1] = 0; > > const pid_t pid = fork(); > if (pid < 0) > perror_msg_and_fail("fork"); > > if (!pid) { > /* wait for the parent */ > while (!mem[0]) > ; > /* let the parent know we are running */ > mem[1] = 1; > > for (unsigned int j = 0; j < SC_ITERS; j++) > sched_yield(); > > pause(); > return 0; > } > > /* let the child know we are running */ > mem[0] = 1; > /* wait for the child */ > while (!mem[1]) > ; > > if (kill(pid, SIGKILL)) > perror_msg_and_fail("kill"); > if (wait(NULL) != pid) > perror_msg_and_fail("wait"); > } > > return 0; > }
On Tue, Jun 21, 2022 at 09:02:05AM -0500, Eric W. Biederman wrote: > Alexander Gordeev <agordeev@linux.ibm.com> writes: > > > On Thu, May 05, 2022 at 01:26:45PM -0500, Eric W. Biederman wrote: > >> From: Peter Zijlstra <peterz@infradead.org> > >> > >> Currently ptrace_stop() / do_signal_stop() rely on the special states > >> TASK_TRACED and TASK_STOPPED resp. to keep unique state. That is, this > >> state exists only in task->__state and nowhere else. > >> > >> There's two spots of bother with this: > >> > >> - PREEMPT_RT has task->saved_state which complicates matters, > >> meaning task_is_{traced,stopped}() needs to check an additional > >> variable. > >> > >> - An alternative freezer implementation that itself relies on a > >> special TASK state would loose TASK_TRACED/TASK_STOPPED and will > >> result in misbehaviour. > >> > >> As such, add additional state to task->jobctl to track this state > >> outside of task->__state. > >> > >> NOTE: this doesn't actually fix anything yet, just adds extra state. > >> > >> --EWB > >> * didn't add a unnecessary newline in signal.h > >> * Update t->jobctl in signal_wake_up and ptrace_signal_wake_up > >> instead of in signal_wake_up_state. This prevents the clearing > >> of TASK_STOPPED and TASK_TRACED from getting lost. > >> * Added warnings if JOBCTL_STOPPED or JOBCTL_TRACED are not cleared > > > > Hi Eric, Peter, > > > > On s390 this patch triggers warning at kernel/ptrace.c:272 when > > kill_child testcase from strace tool is repeatedly used (the source > > is attached for reference): > > > > while :; do > > strace -f -qq -e signal=none -e trace=sched_yield,/kill ./kill_child > > done > > > > It normally takes few minutes to cause the warning in -rc3, but FWIW > > it hits almost immediately for ptrace_stop-cleanup-for-v5.19 tag of > > git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace. > > > > Commit 7b0fe1367ef2 ("ptrace: Document that wait_task_inactive can't > > fail") suggests this WARN_ON_ONCE() is not really expected, yet we > > observe a child in __TASK_TRACED state. Could you please comment here? > > > > For clarity the warning is that the child is not in __TASK_TRACED state. > > The code is waiting for the code to stop in the scheduler in the > __TASK_TRACED state so that it can safely read and change the > processes state. Some of that state is not even saved until the > process is scheduled out so we have to wait until the process > is stopped in the scheduler. So I assume (checked actually) the return 0 below from kernel/sched/core.c: wait_task_inactive() is where it bails out: 3303 while (task_running(rq, p)) { 3304 if (match_state && unlikely(READ_ONCE(p->__state) != match_state)) 3305 return 0; 3306 cpu_relax(); 3307 } Yet, the child task is always found in __TASK_TRACED state (as seen in crash dumps): > 101447 11342 13 ce3a8100 RU 0.0 10040 4412 strace 101450 101447 0 bb04b200 TR 0.0 2272 1136 kill_child 108261 101447 2 d0b10100 TR 0.0 2272 532 kill_child crash> task bb04b200 __state PID: 101450 TASK: bb04b200 CPU: 0 COMMAND: "kill_child" __state = 8, crash> task d0b10100 __state PID: 108261 TASK: d0b10100 CPU: 2 COMMAND: "kill_child" __state = 8, > At least on s390 it looks like there is a race between SIGKILL and > ptrace_check_attach. That isn't good. > > Reading the code below there is something missing because I don't see > anything making ptrace calls, and ptrace_check_attach (which contains > the warning) only happens in the ptrace syscall. That is what I believe strace does when calling that code: strace -f -qq -e signal=none -e trace=sched_yield,/kill ./kill_child > Eric > > > > > Thanks! > > > > /* > > * Check for the corner case that previously lead to segfault > > * due to an attempt to access unitialised tcp->s_ent. > > * > > * 13994 ????( <unfinished ...> > > * ... > > * 13994 <... ???? resumed>) = ? > > * > > * Copyright (c) 2019 The strace developers. > > * All rights reserved. > > * > > * SPDX-License-Identifier: GPL-2.0-or-later > > */ > > > > #include "tests.h" > > > > #include <sched.h> > > #include <signal.h> > > #include <unistd.h> > > #include <sys/mman.h> > > #include <sys/wait.h> > > > > #define ITERS 10000 > > #define SC_ITERS 10000 > > > > int > > main(void) > > { > > volatile sig_atomic_t *const mem = > > mmap(NULL, get_page_size(), PROT_READ | PROT_WRITE, > > MAP_SHARED | MAP_ANONYMOUS, -1, 0); > > if (mem == MAP_FAILED) > > perror_msg_and_fail("mmap"); > > > > for (unsigned int i = 0; i < ITERS; ++i) { > > mem[0] = mem[1] = 0; > > > > const pid_t pid = fork(); > > if (pid < 0) > > perror_msg_and_fail("fork"); > > > > if (!pid) { > > /* wait for the parent */ > > while (!mem[0]) > > ; > > /* let the parent know we are running */ > > mem[1] = 1; > > > > for (unsigned int j = 0; j < SC_ITERS; j++) > > sched_yield(); > > > > pause(); > > return 0; > > } > > > > /* let the child know we are running */ > > mem[0] = 1; > > /* wait for the child */ > > while (!mem[1]) > > ; > > > > if (kill(pid, SIGKILL)) > > perror_msg_and_fail("kill"); > > if (wait(NULL) != pid) > > perror_msg_and_fail("wait"); > > } > > > > return 0; > > }
Alexander Gordeev <agordeev@linux.ibm.com> writes: > On Tue, Jun 21, 2022 at 09:02:05AM -0500, Eric W. Biederman wrote: >> Alexander Gordeev <agordeev@linux.ibm.com> writes: >> >> > On Thu, May 05, 2022 at 01:26:45PM -0500, Eric W. Biederman wrote: >> >> From: Peter Zijlstra <peterz@infradead.org> >> >> >> >> Currently ptrace_stop() / do_signal_stop() rely on the special states >> >> TASK_TRACED and TASK_STOPPED resp. to keep unique state. That is, this >> >> state exists only in task->__state and nowhere else. >> >> >> >> There's two spots of bother with this: >> >> >> >> - PREEMPT_RT has task->saved_state which complicates matters, >> >> meaning task_is_{traced,stopped}() needs to check an additional >> >> variable. >> >> >> >> - An alternative freezer implementation that itself relies on a >> >> special TASK state would loose TASK_TRACED/TASK_STOPPED and will >> >> result in misbehaviour. >> >> >> >> As such, add additional state to task->jobctl to track this state >> >> outside of task->__state. >> >> >> >> NOTE: this doesn't actually fix anything yet, just adds extra state. >> >> >> >> --EWB >> >> * didn't add a unnecessary newline in signal.h >> >> * Update t->jobctl in signal_wake_up and ptrace_signal_wake_up >> >> instead of in signal_wake_up_state. This prevents the clearing >> >> of TASK_STOPPED and TASK_TRACED from getting lost. >> >> * Added warnings if JOBCTL_STOPPED or JOBCTL_TRACED are not cleared >> > >> > Hi Eric, Peter, >> > >> > On s390 this patch triggers warning at kernel/ptrace.c:272 when >> > kill_child testcase from strace tool is repeatedly used (the source >> > is attached for reference): >> > >> > while :; do >> > strace -f -qq -e signal=none -e trace=sched_yield,/kill ./kill_child >> > done >> > >> > It normally takes few minutes to cause the warning in -rc3, but FWIW >> > it hits almost immediately for ptrace_stop-cleanup-for-v5.19 tag of >> > git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace. >> > >> > Commit 7b0fe1367ef2 ("ptrace: Document that wait_task_inactive can't >> > fail") suggests this WARN_ON_ONCE() is not really expected, yet we >> > observe a child in __TASK_TRACED state. Could you please comment here? >> > >> >> For clarity the warning is that the child is not in __TASK_TRACED state. >> >> The code is waiting for the code to stop in the scheduler in the >> __TASK_TRACED state so that it can safely read and change the >> processes state. Some of that state is not even saved until the >> process is scheduled out so we have to wait until the process >> is stopped in the scheduler. > > So I assume (checked actually) the return 0 below from kernel/sched/core.c: > wait_task_inactive() is where it bails out: > > 3303 while (task_running(rq, p)) { > 3304 if (match_state && unlikely(READ_ONCE(p->__state) != match_state)) > 3305 return 0; > 3306 cpu_relax(); > 3307 } > > Yet, the child task is always found in __TASK_TRACED state (as seen > in crash dumps): > >> 101447 11342 13 ce3a8100 RU 0.0 10040 4412 strace > 101450 101447 0 bb04b200 TR 0.0 2272 1136 kill_child > 108261 101447 2 d0b10100 TR 0.0 2272 532 kill_child > crash> task bb04b200 __state > PID: 101450 TASK: bb04b200 CPU: 0 COMMAND: "kill_child" > __state = 8, > > crash> task d0b10100 __state > PID: 108261 TASK: d0b10100 CPU: 2 COMMAND: "kill_child" > __state = 8, That is weird. >> At least on s390 it looks like there is a race between SIGKILL and >> ptrace_check_attach. That isn't good. >> >> Reading the code below there is something missing because I don't see >> anything making ptrace calls, and ptrace_check_attach (which contains >> the warning) only happens in the ptrace syscall. > > That is what I believe strace does when calling that code: > > strace -f -qq -e signal=none -e trace=sched_yield,/kill ./kill_child Thank you. That was my braino. I will have to see if it reproduces for me on x86 (I don't have an s390). Perhaps if I can reproduce it I can guess what is going wrong. So far it appears WARN_ON_ONCE has nothing to warn about yet it is warning. Eric
Alexander Gordeev <agordeev@linux.ibm.com> writes: > On Tue, Jun 21, 2022 at 09:02:05AM -0500, Eric W. Biederman wrote: >> Alexander Gordeev <agordeev@linux.ibm.com> writes: >> >> > On Thu, May 05, 2022 at 01:26:45PM -0500, Eric W. Biederman wrote: >> >> From: Peter Zijlstra <peterz@infradead.org> >> >> >> >> Currently ptrace_stop() / do_signal_stop() rely on the special states >> >> TASK_TRACED and TASK_STOPPED resp. to keep unique state. That is, this >> >> state exists only in task->__state and nowhere else. >> >> >> >> There's two spots of bother with this: >> >> >> >> - PREEMPT_RT has task->saved_state which complicates matters, >> >> meaning task_is_{traced,stopped}() needs to check an additional >> >> variable. >> >> >> >> - An alternative freezer implementation that itself relies on a >> >> special TASK state would loose TASK_TRACED/TASK_STOPPED and will >> >> result in misbehaviour. >> >> >> >> As such, add additional state to task->jobctl to track this state >> >> outside of task->__state. >> >> >> >> NOTE: this doesn't actually fix anything yet, just adds extra state. >> >> >> >> --EWB >> >> * didn't add a unnecessary newline in signal.h >> >> * Update t->jobctl in signal_wake_up and ptrace_signal_wake_up >> >> instead of in signal_wake_up_state. This prevents the clearing >> >> of TASK_STOPPED and TASK_TRACED from getting lost. >> >> * Added warnings if JOBCTL_STOPPED or JOBCTL_TRACED are not cleared >> > >> > Hi Eric, Peter, >> > >> > On s390 this patch triggers warning at kernel/ptrace.c:272 when >> > kill_child testcase from strace tool is repeatedly used (the source >> > is attached for reference): >> > >> > while :; do >> > strace -f -qq -e signal=none -e trace=sched_yield,/kill ./kill_child >> > done >> > >> > It normally takes few minutes to cause the warning in -rc3, but FWIW >> > it hits almost immediately for ptrace_stop-cleanup-for-v5.19 tag of >> > git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace. >> > >> > Commit 7b0fe1367ef2 ("ptrace: Document that wait_task_inactive can't >> > fail") suggests this WARN_ON_ONCE() is not really expected, yet we >> > observe a child in __TASK_TRACED state. Could you please comment here? >> > >> >> For clarity the warning is that the child is not in __TASK_TRACED state. >> >> The code is waiting for the code to stop in the scheduler in the >> __TASK_TRACED state so that it can safely read and change the >> processes state. Some of that state is not even saved until the >> process is scheduled out so we have to wait until the process >> is stopped in the scheduler. > > So I assume (checked actually) the return 0 below from kernel/sched/core.c: > wait_task_inactive() is where it bails out: > > 3303 while (task_running(rq, p)) { > 3304 if (match_state && unlikely(READ_ONCE(p->__state) != match_state)) > 3305 return 0; > 3306 cpu_relax(); > 3307 } > > Yet, the child task is always found in __TASK_TRACED state (as seen > in crash dumps): > >> 101447 11342 13 ce3a8100 RU 0.0 10040 4412 strace > 101450 101447 0 bb04b200 TR 0.0 2272 1136 kill_child > 108261 101447 2 d0b10100 TR 0.0 2272 532 kill_child > crash> task bb04b200 __state > PID: 101450 TASK: bb04b200 CPU: 0 COMMAND: "kill_child" > __state = 8, > > crash> task d0b10100 __state > PID: 108261 TASK: d0b10100 CPU: 2 COMMAND: "kill_child" > __state = 8, > I haven't gotten as far as reproducing this but I have started giving this issue some thought. This entire thing smells like a memory barrier is missing somewhere. However by definition the lock implementations in linux provide all the needed memory barriers, and in the ptrace_stop and ptrace_check_attach path I don't see cases where these values are sampled outside of a lock except in wait_task_inactive. Does doing that perhaps require a barrier? The two things I can think of that could shed light on what is going on is enabling lockdep, to enable the debug check in signal_wake_up_state and verifying bits of state that should be constant while the task is frozen for ptrace are indeed constant when task is frozen for ptrace. Something like my patch below. If you could test that when you have a chance that would help narrow down what is going on. Thank you, Eric diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 156a99283b11..6467a2b1c3bc 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -268,9 +268,13 @@ static int ptrace_check_attach(struct task_struct *child, bool ignore_state) } read_unlock(&tasklist_lock); - if (!ret && !ignore_state && - WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED))) + if (!ret && !ignore_state) { + WARN_ON_ONCE(!(child->jobctl & JOBCTL_PTRACE_FROZEN)); + WARN_ON_ONCE(!(child->joctctl & JOBCTL_TRACED)); + WARN_ON_ONCE(READ_ONCE(child->__state) != __TASK_TRACED); + WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED)); ret = -ESRCH; + } return ret; }
On Sat, Jun 25, 2022 at 11:34:46AM -0500, Eric W. Biederman wrote: > I haven't gotten as far as reproducing this but I have started giving > this issue some thought. > > This entire thing smells like a memory barrier is missing somewhere. > However by definition the lock implementations in linux provide all the > needed memory barriers, and in the ptrace_stop and ptrace_check_attach > path I don't see cases where these values are sampled outside of a lock > except in wait_task_inactive. Does doing that perhaps require a > barrier? > > The two things I can think of that could shed light on what is going on > is enabling lockdep, to enable the debug check in signal_wake_up_state > and verifying bits of state that should be constant while the task > is frozen for ptrace are indeed constant when task is frozen for ptrace. > Something like my patch below. > > If you could test that when you have a chance that would help narrow > down what is going on. > > Thank you, > Eric > > diff --git a/kernel/ptrace.c b/kernel/ptrace.c > index 156a99283b11..6467a2b1c3bc 100644 > --- a/kernel/ptrace.c > +++ b/kernel/ptrace.c > @@ -268,9 +268,13 @@ static int ptrace_check_attach(struct task_struct *child, bool ignore_state) > } > read_unlock(&tasklist_lock); > > - if (!ret && !ignore_state && > - WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED))) > + if (!ret && !ignore_state) { > + WARN_ON_ONCE(!(child->jobctl & JOBCTL_PTRACE_FROZEN)); > + WARN_ON_ONCE(!(child->joctctl & JOBCTL_TRACED)); > + WARN_ON_ONCE(READ_ONCE(child->__state) != __TASK_TRACED); > + WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED)); > ret = -ESRCH; > + } > > return ret; > } I modified your chunk a bit - hope that is what you had in mind: diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 156a99283b11..f0e9a9a4d63c 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -268,9 +268,19 @@ static int ptrace_check_attach(struct task_struct *child, bool ignore_state) } read_unlock(&tasklist_lock); - if (!ret && !ignore_state && - WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED))) - ret = -ESRCH; + if (!ret && !ignore_state) { + unsigned int __state; + + WARN_ON_ONCE(!(child->jobctl & JOBCTL_PTRACE_FROZEN)); + WARN_ON_ONCE(!(child->jobctl & JOBCTL_TRACED)); + __state = READ_ONCE(child->__state); + if (__state != __TASK_TRACED) { + pr_err("%s(%d) __state %x", __FUNCTION__, __LINE__, __state); + WARN_ON_ONCE(1); + } + if (WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED))) + ret = -ESRCH; + } return ret; } When WARN_ON_ONCE(1) hits the child __state is always zero/TASK_RUNNING, as reported by the preceding pr_err(). Yet, in the resulting core dump it is always __TASK_TRACED. Removing WARN_ON_ONCE(1) while looping until (__state != __TASK_TRACED) confirms the unexpected __state is always TASK_RUNNING. It never observed more than one iteration and gets printed once in 30-60 mins. So probably when the condition is entered __state is TASK_RUNNING more often, but gets overwritten with __TASK_TRACED pretty quickly. Which kind of consistent with my previous observation that kernel/sched/core.c:3305 is where return 0 makes wait_task_inactive() fail. No other WARN_ON_ONCE() hit ever.
Alexander Gordeev <agordeev@linux.ibm.com> writes: > On Sat, Jun 25, 2022 at 11:34:46AM -0500, Eric W. Biederman wrote: >> I haven't gotten as far as reproducing this but I have started giving >> this issue some thought. >> >> This entire thing smells like a memory barrier is missing somewhere. >> However by definition the lock implementations in linux provide all the >> needed memory barriers, and in the ptrace_stop and ptrace_check_attach >> path I don't see cases where these values are sampled outside of a lock >> except in wait_task_inactive. Does doing that perhaps require a >> barrier? >> >> The two things I can think of that could shed light on what is going on >> is enabling lockdep, to enable the debug check in signal_wake_up_state >> and verifying bits of state that should be constant while the task >> is frozen for ptrace are indeed constant when task is frozen for ptrace. >> Something like my patch below. >> >> If you could test that when you have a chance that would help narrow >> down what is going on. >> >> Thank you, >> Eric >> >> diff --git a/kernel/ptrace.c b/kernel/ptrace.c >> index 156a99283b11..6467a2b1c3bc 100644 >> --- a/kernel/ptrace.c >> +++ b/kernel/ptrace.c >> @@ -268,9 +268,13 @@ static int ptrace_check_attach(struct task_struct *child, bool ignore_state) >> } >> read_unlock(&tasklist_lock); >> >> - if (!ret && !ignore_state && >> - WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED))) >> + if (!ret && !ignore_state) { >> + WARN_ON_ONCE(!(child->jobctl & JOBCTL_PTRACE_FROZEN)); >> + WARN_ON_ONCE(!(child->joctctl & JOBCTL_TRACED)); >> + WARN_ON_ONCE(READ_ONCE(child->__state) != __TASK_TRACED); >> + WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED)); >> ret = -ESRCH; >> + } >> >> return ret; >> } > > I modified your chunk a bit - hope that is what you had in mind: Yes. > diff --git a/kernel/ptrace.c b/kernel/ptrace.c > index 156a99283b11..f0e9a9a4d63c 100644 > --- a/kernel/ptrace.c > +++ b/kernel/ptrace.c > @@ -268,9 +268,19 @@ static int ptrace_check_attach(struct task_struct *child, bool ignore_state) > } > read_unlock(&tasklist_lock); > > - if (!ret && !ignore_state && > - WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED))) > - ret = -ESRCH; > + if (!ret && !ignore_state) { > + unsigned int __state; > + > + WARN_ON_ONCE(!(child->jobctl & JOBCTL_PTRACE_FROZEN)); > + WARN_ON_ONCE(!(child->jobctl & JOBCTL_TRACED)); > + __state = READ_ONCE(child->__state); > + if (__state != __TASK_TRACED) { > + pr_err("%s(%d) __state %x", __FUNCTION__, __LINE__, __state); > + WARN_ON_ONCE(1); > + } > + if (WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED))) > + ret = -ESRCH; > + } > > return ret; > } > > > When WARN_ON_ONCE(1) hits the child __state is always zero/TASK_RUNNING, > as reported by the preceding pr_err(). Yet, in the resulting core dump > it is always __TASK_TRACED. Did you enable CONFIG_LOCKDEP? I am just wanting to ensure that every caller of signal_wake_up_state was holding siglock. > Removing WARN_ON_ONCE(1) while looping until (__state != __TASK_TRACED) > confirms the unexpected __state is always TASK_RUNNING. It never observed > more than one iteration and gets printed once in 30-60 mins. Hmm. This does smell lock a missing barrier. > So probably when the condition is entered __state is TASK_RUNNING more > often, but gets overwritten with __TASK_TRACED pretty quickly. Which kind > of consistent with my previous observation that kernel/sched/core.c:3305 > is where return 0 makes wait_task_inactive() fail. > > No other WARN_ON_ONCE() hit ever. Yes. This smells like something is missing. I am completely rusty at rolling barriers by hand but does something like the below clear up those mysterious warnings? diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 156a99283b11..cb85bcf84640 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -202,6 +202,7 @@ static bool ptrace_freeze_traced(struct task_struct *task) spin_lock_irq(&task->sighand->siglock); if (task_is_traced(task) && !looks_like_a_spurious_pid(task) && !__fatal_signal_pending(task)) { + smp_rmb(); task->jobctl |= JOBCTL_PTRACE_FROZEN; ret = true; } diff --git a/kernel/signal.c b/kernel/signal.c index edb1dc9b00dc..bcd576e9de66 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2233,6 +2233,7 @@ static int ptrace_stop(int exit_code, int why, unsigned long message, return exit_code; set_special_state(TASK_TRACED); + smp_wmb(); current->jobctl |= JOBCTL_TRACED; /* Eric
On Tue, 28 Jun 2022 17:42:22 -0500 "Eric W. Biederman" <ebiederm@xmission.com> wrote: > diff --git a/kernel/ptrace.c b/kernel/ptrace.c > index 156a99283b11..cb85bcf84640 100644 > --- a/kernel/ptrace.c > +++ b/kernel/ptrace.c > @@ -202,6 +202,7 @@ static bool ptrace_freeze_traced(struct task_struct *task) > spin_lock_irq(&task->sighand->siglock); > if (task_is_traced(task) && !looks_like_a_spurious_pid(task) && > !__fatal_signal_pending(task)) { > + smp_rmb(); > task->jobctl |= JOBCTL_PTRACE_FROZEN; > ret = true; > } > diff --git a/kernel/signal.c b/kernel/signal.c > index edb1dc9b00dc..bcd576e9de66 100644 > --- a/kernel/signal.c > +++ b/kernel/signal.c > @@ -2233,6 +2233,7 @@ static int ptrace_stop(int exit_code, int why, unsigned long message, > return exit_code; > > set_special_state(TASK_TRACED); > + smp_wmb(); > current->jobctl |= JOBCTL_TRACED; > Are not these both done under the sighand->siglock spinlock? That is, the two paths should already be synchronized, and the memory barriers will not help anything inside the locks. The locking should (and must) handle all that. -- Steve
On Tue, 21 Jun 2022 17:15:47 +0200 Alexander Gordeev <agordeev@linux.ibm.com> wrote: > So I assume (checked actually) the return 0 below from kernel/sched/core.c: > wait_task_inactive() is where it bails out: > > 3303 while (task_running(rq, p)) { > 3304 if (match_state && unlikely(READ_ONCE(p->__state) != match_state)) > 3305 return 0; > 3306 cpu_relax(); > 3307 } > > Yet, the child task is always found in __TASK_TRACED state (as seen > in crash dumps): > > > 101447 11342 13 ce3a8100 RU 0.0 10040 4412 strace > 101450 101447 0 bb04b200 TR 0.0 2272 1136 kill_child > 108261 101447 2 d0b10100 TR 0.0 2272 532 kill_child > crash> task bb04b200 __state > PID: 101450 TASK: bb04b200 CPU: 0 COMMAND: "kill_child" > __state = 8, > > crash> task d0b10100 __state > PID: 108261 TASK: d0b10100 CPU: 2 COMMAND: "kill_child" > __state = 8, If you are using crash, can you enable all trace events? Then you should be able to extract the ftrace ring buffer from crash using the trace.so extend (https://github.com/fujitsu/crash-trace) I guess it should still work with s390. Then you can see the events that lead up to the crash. -- Steve
Steven Rostedt <rostedt@goodmis.org> writes: > On Tue, 28 Jun 2022 17:42:22 -0500 > "Eric W. Biederman" <ebiederm@xmission.com> wrote: > >> diff --git a/kernel/ptrace.c b/kernel/ptrace.c >> index 156a99283b11..cb85bcf84640 100644 >> --- a/kernel/ptrace.c >> +++ b/kernel/ptrace.c >> @@ -202,6 +202,7 @@ static bool ptrace_freeze_traced(struct task_struct *task) >> spin_lock_irq(&task->sighand->siglock); >> if (task_is_traced(task) && !looks_like_a_spurious_pid(task) && >> !__fatal_signal_pending(task)) { >> + smp_rmb(); >> task->jobctl |= JOBCTL_PTRACE_FROZEN; >> ret = true; >> } >> diff --git a/kernel/signal.c b/kernel/signal.c >> index edb1dc9b00dc..bcd576e9de66 100644 >> --- a/kernel/signal.c >> +++ b/kernel/signal.c >> @@ -2233,6 +2233,7 @@ static int ptrace_stop(int exit_code, int why, unsigned long message, >> return exit_code; >> >> set_special_state(TASK_TRACED); >> + smp_wmb(); >> current->jobctl |= JOBCTL_TRACED; >> > > Are not these both done under the sighand->siglock spinlock? > > That is, the two paths should already be synchronized, and the memory > barriers will not help anything inside the locks. The locking should (and > must) handle all that. I would presume so to. However the READ_ONCE that is going astray does not look like it is honoring that. So perhaps there is a bug in the s390 spin_lock barriers? Perhaps there is a subtle detail in the barriers that spin locks provide that we are overlooking? I just know the observed behavior is: - reading tsk->jobctl and seeing JOBCTL_TRACED set. - reading tsk->__state and seeing TASK_RUNNING. So unless PREEMPT_RT is enabled on s390. It looks like there is a barrier problem. Alexander do you have PREEMPT_RT enabled on s390? I have been assuming you don't but I figure I should ask and make certain as PREEMPT_RT can cause this kind of failure. Eric
On Tue, Jun 28, 2022 at 10:39:59PM -0500, Eric W. Biederman wrote: > Steven Rostedt <rostedt@goodmis.org> writes: > > > On Tue, 28 Jun 2022 17:42:22 -0500 > > "Eric W. Biederman" <ebiederm@xmission.com> wrote: > > > >> diff --git a/kernel/ptrace.c b/kernel/ptrace.c > >> index 156a99283b11..cb85bcf84640 100644 > >> --- a/kernel/ptrace.c > >> +++ b/kernel/ptrace.c > >> @@ -202,6 +202,7 @@ static bool ptrace_freeze_traced(struct task_struct *task) > >> spin_lock_irq(&task->sighand->siglock); > >> if (task_is_traced(task) && !looks_like_a_spurious_pid(task) && > >> !__fatal_signal_pending(task)) { > >> + smp_rmb(); > >> task->jobctl |= JOBCTL_PTRACE_FROZEN; > >> ret = true; > >> } > >> diff --git a/kernel/signal.c b/kernel/signal.c > >> index edb1dc9b00dc..bcd576e9de66 100644 > >> --- a/kernel/signal.c > >> +++ b/kernel/signal.c > >> @@ -2233,6 +2233,7 @@ static int ptrace_stop(int exit_code, int why, unsigned long message, > >> return exit_code; > >> > >> set_special_state(TASK_TRACED); > >> + smp_wmb(); > >> current->jobctl |= JOBCTL_TRACED; > >> > > > > Are not these both done under the sighand->siglock spinlock? > > > > That is, the two paths should already be synchronized, and the memory > > barriers will not help anything inside the locks. The locking should (and > > must) handle all that. > > I would presume so to. However the READ_ONCE that is going astray > does not look like it is honoring that. > > So perhaps there is a bug in the s390 spin_lock barriers? Perhaps there > is a subtle detail in the barriers that spin locks provide that we are > overlooking? > > I just know the observed behavior is: > > - reading tsk->jobctl and seeing JOBCTL_TRACED set. > - reading tsk->__state and seeing TASK_RUNNING. > > So unless PREEMPT_RT is enabled on s390. It looks like there is a > barrier problem. > > Alexander do you have PREEMPT_RT enabled on s390? I have been assuming > you don't but I figure I should ask and make certain as PREEMPT_RT can > cause this kind of failure. There is no change with the barriers added. CONFIG_PREEMPT_RT is disabled and CONFIG_LOCKDEP is enabled (in attach). FWIW, I also added a full barrier: @@ -271,6 +272,7 @@ static int ptrace_check_attach(struct task_struct *child, bool ignore_state) if (!ret && !ignore_state) { unsigned int __state; + smp_mb(); WARN_ON_ONCE(!(child->jobctl & JOBCTL_PTRACE_FROZEN)); WARN_ON_ONCE(!(child->jobctl & JOBCTL_TRACED)); __state = READ_ONCE(child->__state); I have not been able to extract the ftrace ring buffer yet - going to do that. > Eric Thanks! # # Automatically generated file; DO NOT EDIT. # Linux/s390 5.19.0-rc4 Kernel Configuration # CONFIG_CC_VERSION_TEXT="s390x-12.1.0-gcc (GCC) 12.1.0" CONFIG_CC_IS_GCC=y CONFIG_GCC_VERSION=120100 CONFIG_CLANG_VERSION=0 CONFIG_AS_IS_GNU=y CONFIG_AS_VERSION=23800 CONFIG_LD_IS_BFD=y CONFIG_LD_VERSION=23800 CONFIG_LLD_VERSION=0 CONFIG_CC_CAN_LINK=y CONFIG_CC_CAN_LINK_STATIC=y CONFIG_CC_HAS_ASM_GOTO=y CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y CONFIG_CC_HAS_ASM_INLINE=y CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y CONFIG_PAHOLE_VERSION=121 CONFIG_IRQ_WORK=y CONFIG_BUILDTIME_TABLE_SORT=y CONFIG_THREAD_INFO_IN_TASK=y # # General setup # CONFIG_INIT_ENV_ARG_LIMIT=32 # CONFIG_COMPILE_TEST is not set # CONFIG_WERROR is not set CONFIG_LOCALVERSION="" CONFIG_LOCALVERSION_AUTO=y CONFIG_BUILD_SALT="" CONFIG_HAVE_KERNEL_GZIP=y CONFIG_HAVE_KERNEL_BZIP2=y CONFIG_HAVE_KERNEL_LZMA=y CONFIG_HAVE_KERNEL_XZ=y CONFIG_HAVE_KERNEL_LZO=y CONFIG_HAVE_KERNEL_LZ4=y CONFIG_HAVE_KERNEL_ZSTD=y CONFIG_HAVE_KERNEL_UNCOMPRESSED=y CONFIG_KERNEL_GZIP=y # CONFIG_KERNEL_BZIP2 is not set # CONFIG_KERNEL_LZMA is not set # CONFIG_KERNEL_XZ is not set # CONFIG_KERNEL_LZO is not set # CONFIG_KERNEL_LZ4 is not set # CONFIG_KERNEL_ZSTD is not set # CONFIG_KERNEL_UNCOMPRESSED is not set CONFIG_DEFAULT_INIT="" CONFIG_DEFAULT_HOSTNAME="(none)" CONFIG_SYSVIPC=y CONFIG_SYSVIPC_SYSCTL=y CONFIG_SYSVIPC_COMPAT=y CONFIG_POSIX_MQUEUE=y CONFIG_POSIX_MQUEUE_SYSCTL=y CONFIG_WATCH_QUEUE=y CONFIG_CROSS_MEMORY_ATTACH=y # CONFIG_USELIB is not set CONFIG_AUDIT=y CONFIG_HAVE_ARCH_AUDITSYSCALL=y CONFIG_AUDITSYSCALL=y # # IRQ subsystem # CONFIG_IRQ_DOMAIN=y CONFIG_IRQ_DOMAIN_HIERARCHY=y CONFIG_GENERIC_MSI_IRQ=y CONFIG_GENERIC_MSI_IRQ_DOMAIN=y CONFIG_SPARSE_IRQ=y # CONFIG_GENERIC_IRQ_DEBUGFS is not set # end of IRQ subsystem CONFIG_GENERIC_TIME_VSYSCALL=y CONFIG_GENERIC_CLOCKEVENTS=y # CONFIG_TIME_KUNIT_TEST is not set # # Timers subsystem # CONFIG_TICK_ONESHOT=y CONFIG_NO_HZ_COMMON=y # CONFIG_HZ_PERIODIC is not set CONFIG_NO_HZ_IDLE=y # CONFIG_NO_HZ is not set CONFIG_HIGH_RES_TIMERS=y # end of Timers subsystem CONFIG_BPF=y CONFIG_HAVE_EBPF_JIT=y CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y # # BPF subsystem # # CONFIG_BPF_SYSCALL is not set # CONFIG_BPF_JIT is not set # end of BPF subsystem CONFIG_PREEMPT_NONE_BUILD=y CONFIG_PREEMPT_NONE=y # CONFIG_PREEMPT_VOLUNTARY is not set # CONFIG_PREEMPT is not set CONFIG_PREEMPT_COUNT=y CONFIG_SCHED_CORE=y # # CPU/Task time and stats accounting # CONFIG_VIRT_CPU_ACCOUNTING=y CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_BSD_PROCESS_ACCT_V3=y CONFIG_TASKSTATS=y CONFIG_TASK_DELAY_ACCT=y CONFIG_TASK_XACCT=y CONFIG_TASK_IO_ACCOUNTING=y # CONFIG_PSI is not set # end of CPU/Task time and stats accounting CONFIG_CPU_ISOLATION=y # # RCU Subsystem # CONFIG_TREE_RCU=y # CONFIG_RCU_EXPERT is not set CONFIG_SRCU=y CONFIG_TREE_SRCU=y CONFIG_TASKS_RCU_GENERIC=y CONFIG_TASKS_RUDE_RCU=y CONFIG_RCU_STALL_COMMON=y CONFIG_RCU_NEED_SEGCBLIST=y # end of RCU Subsystem CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y # CONFIG_IKHEADERS is not set CONFIG_LOG_BUF_SHIFT=17 CONFIG_LOG_CPU_MAX_BUF_SHIFT=12 CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13 # CONFIG_PRINTK_INDEX is not set # # Scheduler features # # end of Scheduler features CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y CONFIG_CC_HAS_INT128=y CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5" CONFIG_GCC12_NO_ARRAY_BOUNDS=y CONFIG_CC_NO_ARRAY_BOUNDS=y CONFIG_NUMA_BALANCING=y CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y CONFIG_CGROUPS=y CONFIG_PAGE_COUNTER=y CONFIG_MEMCG=y CONFIG_MEMCG_SWAP=y CONFIG_MEMCG_KMEM=y CONFIG_BLK_CGROUP=y CONFIG_CGROUP_WRITEBACK=y CONFIG_CGROUP_SCHED=y CONFIG_FAIR_GROUP_SCHED=y CONFIG_CFS_BANDWIDTH=y CONFIG_RT_GROUP_SCHED=y CONFIG_CGROUP_PIDS=y CONFIG_CGROUP_RDMA=y CONFIG_CGROUP_FREEZER=y CONFIG_CGROUP_HUGETLB=y CONFIG_CPUSETS=y CONFIG_PROC_PID_CPUSET=y CONFIG_CGROUP_DEVICE=y CONFIG_CGROUP_CPUACCT=y CONFIG_CGROUP_PERF=y CONFIG_CGROUP_MISC=y # CONFIG_CGROUP_DEBUG is not set CONFIG_SOCK_CGROUP_DATA=y CONFIG_NAMESPACES=y CONFIG_UTS_NS=y CONFIG_TIME_NS=y CONFIG_IPC_NS=y CONFIG_USER_NS=y CONFIG_PID_NS=y CONFIG_NET_NS=y CONFIG_CHECKPOINT_RESTORE=y CONFIG_SCHED_AUTOGROUP=y # CONFIG_SYSFS_DEPRECATED is not set CONFIG_RELAY=y CONFIG_BLK_DEV_INITRD=y CONFIG_INITRAMFS_SOURCE="" CONFIG_RD_GZIP=y CONFIG_RD_BZIP2=y CONFIG_RD_LZMA=y CONFIG_RD_XZ=y CONFIG_RD_LZO=y CONFIG_RD_LZ4=y CONFIG_RD_ZSTD=y CONFIG_BOOT_CONFIG=y # CONFIG_BOOT_CONFIG_EMBED is not set CONFIG_INITRAMFS_PRESERVE_MTIME=y CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set CONFIG_SYSCTL=y CONFIG_HAVE_UID16=y CONFIG_SYSCTL_EXCEPTION_TRACE=y CONFIG_EXPERT=y CONFIG_UID16=y CONFIG_MULTIUSER=y # CONFIG_SGETMASK_SYSCALL is not set # CONFIG_SYSFS_SYSCALL is not set CONFIG_FHANDLE=y CONFIG_POSIX_TIMERS=y CONFIG_PRINTK=y CONFIG_BUG=y CONFIG_ELF_CORE=y CONFIG_BASE_FULL=y CONFIG_FUTEX=y CONFIG_FUTEX_PI=y CONFIG_EPOLL=y CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EVENTFD=y CONFIG_SHMEM=y CONFIG_AIO=y CONFIG_IO_URING=y CONFIG_ADVISE_SYSCALLS=y CONFIG_MEMBARRIER=y CONFIG_KALLSYMS=y CONFIG_KALLSYMS_ALL=y CONFIG_KALLSYMS_BASE_RELATIVE=y CONFIG_KCMP=y CONFIG_RSEQ=y # CONFIG_DEBUG_RSEQ is not set # CONFIG_EMBEDDED is not set CONFIG_HAVE_PERF_EVENTS=y # CONFIG_PC104 is not set # # Kernel Performance Events And Counters # CONFIG_PERF_EVENTS=y # CONFIG_DEBUG_PERF_USE_VMALLOC is not set # end of Kernel Performance Events And Counters CONFIG_SYSTEM_DATA_VERIFICATION=y CONFIG_PROFILING=y CONFIG_TRACEPOINTS=y # end of General setup CONFIG_MMU=y CONFIG_CPU_BIG_ENDIAN=y CONFIG_LOCKDEP_SUPPORT=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_GENERIC_HWEIGHT=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y CONFIG_PGSTE=y CONFIG_AUDIT_ARCH=y CONFIG_NO_IOPORT_MAP=y # CONFIG_PCI_QUIRKS is not set CONFIG_ARCH_SUPPORTS_UPROBES=y CONFIG_S390=y CONFIG_SCHED_OMIT_FRAME_POINTER=y CONFIG_PGTABLE_LEVELS=5 CONFIG_HAVE_LIVEPATCH=y CONFIG_LIVEPATCH=y # # Processor type and features # CONFIG_HAVE_MARCH_Z10_FEATURES=y CONFIG_HAVE_MARCH_Z196_FEATURES=y CONFIG_HAVE_MARCH_ZEC12_FEATURES=y # CONFIG_MARCH_Z10 is not set # CONFIG_MARCH_Z196 is not set CONFIG_MARCH_ZEC12=y # CONFIG_MARCH_Z13 is not set # CONFIG_MARCH_Z14 is not set # CONFIG_MARCH_Z15 is not set CONFIG_MARCH_ZEC12_TUNE=y # CONFIG_TUNE_DEFAULT is not set # CONFIG_TUNE_Z10 is not set # CONFIG_TUNE_Z196 is not set CONFIG_TUNE_ZEC12=y # CONFIG_TUNE_Z13 is not set # CONFIG_TUNE_Z14 is not set # CONFIG_TUNE_Z15 is not set # CONFIG_TUNE_Z16 is not set CONFIG_64BIT=y CONFIG_COMMAND_LINE_SIZE=4096 CONFIG_COMPAT=y CONFIG_SMP=y CONFIG_NR_CPUS=512 CONFIG_HOTPLUG_CPU=y CONFIG_NUMA=y CONFIG_NODES_SHIFT=1 CONFIG_SCHED_SMT=y CONFIG_SCHED_MC=y CONFIG_SCHED_BOOK=y CONFIG_SCHED_DRAWER=y CONFIG_SCHED_TOPOLOGY=y CONFIG_HZ_100=y # CONFIG_HZ_250 is not set # CONFIG_HZ_300 is not set # CONFIG_HZ_1000 is not set CONFIG_HZ=100 CONFIG_SCHED_HRTICK=y CONFIG_KEXEC=y CONFIG_KEXEC_FILE=y CONFIG_ARCH_HAS_KEXEC_PURGATORY=y CONFIG_KEXEC_SIG=y CONFIG_ARCH_RANDOM=y # CONFIG_KERNEL_NOBP is not set CONFIG_EXPOLINE=y # CONFIG_EXPOLINE_EXTERN is not set # CONFIG_EXPOLINE_OFF is not set CONFIG_EXPOLINE_AUTO=y # CONFIG_EXPOLINE_FULL is not set CONFIG_RELOCATABLE=y CONFIG_RANDOMIZE_BASE=y # end of Processor type and features # # Memory setup # CONFIG_ARCH_SPARSEMEM_ENABLE=y CONFIG_ARCH_SPARSEMEM_DEFAULT=y CONFIG_MAX_PHYSMEM_BITS=46 # end of Memory setup # # I/O subsystem # CONFIG_QDIO=y CONFIG_PCI_NR_FUNCTIONS=512 CONFIG_HAS_IOMEM=y CONFIG_CHSC_SCH=y CONFIG_SCM_BUS=y CONFIG_EADM_SCH=m CONFIG_VFIO_CCW=m CONFIG_VFIO_AP=m # end of I/O subsystem # # Dump support # CONFIG_CRASH_DUMP=y # end of Dump support CONFIG_CCW=y CONFIG_HAVE_PNETID=y # # Virtualization # CONFIG_PROTECTED_VIRTUALIZATION_GUEST=y CONFIG_PFAULT=y CONFIG_CMM=m CONFIG_CMM_IUCV=y CONFIG_APPLDATA_BASE=y CONFIG_APPLDATA_MEM=m CONFIG_APPLDATA_OS=m CONFIG_APPLDATA_NET_SUM=m CONFIG_S390_HYPFS_FS=y CONFIG_HAVE_KVM=y CONFIG_HAVE_KVM_IRQCHIP=y CONFIG_HAVE_KVM_IRQFD=y CONFIG_HAVE_KVM_IRQ_ROUTING=y CONFIG_HAVE_KVM_EVENTFD=y CONFIG_KVM_ASYNC_PF=y CONFIG_KVM_ASYNC_PF_SYNC=y CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y CONFIG_KVM_VFIO=y CONFIG_HAVE_KVM_INVALID_WAKEUPS=y CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL=y CONFIG_HAVE_KVM_NO_POLL=y CONFIG_VIRTUALIZATION=y CONFIG_KVM=m # CONFIG_KVM_S390_UCONTROL is not set CONFIG_S390_GUEST=y # end of Virtualization CONFIG_S390_MODULES_SANITY_TEST_HELPERS=y # # Selftests # CONFIG_S390_UNWIND_SELFTEST=m CONFIG_S390_KPROBES_SANITY_TEST=m CONFIG_S390_MODULES_SANITY_TEST=m # end of Selftests # # General architecture-dependent options # CONFIG_CRASH_CORE=y CONFIG_KEXEC_CORE=y CONFIG_GENERIC_ENTRY=y CONFIG_KPROBES=y CONFIG_JUMP_LABEL=y # CONFIG_STATIC_KEYS_SELFTEST is not set CONFIG_KPROBES_ON_FTRACE=y CONFIG_UPROBES=y CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y CONFIG_ARCH_USE_BUILTIN_BSWAP=y CONFIG_KRETPROBES=y CONFIG_HAVE_IOREMAP_PROT=y CONFIG_HAVE_KPROBES=y CONFIG_HAVE_KRETPROBES=y CONFIG_HAVE_KPROBES_ON_FTRACE=y CONFIG_ARCH_CORRECT_STACKTRACE_ON_KRETPROBE=y CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y CONFIG_HAVE_NMI=y CONFIG_TRACE_IRQFLAGS_SUPPORT=y CONFIG_HAVE_ARCH_TRACEHOOK=y CONFIG_HAVE_DMA_CONTIGUOUS=y CONFIG_GENERIC_SMP_IDLE_THREAD=y CONFIG_ARCH_HAS_FORTIFY_SOURCE=y CONFIG_ARCH_HAS_SET_MEMORY=y CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y CONFIG_ARCH_WANTS_NO_INSTR=y CONFIG_ARCH_32BIT_USTAT_F_TINODE=y CONFIG_HAVE_ASM_MODVERSIONS=y CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y CONFIG_HAVE_RSEQ=y CONFIG_HAVE_FUNCTION_ARG_ACCESS_API=y CONFIG_HAVE_PERF_REGS=y CONFIG_HAVE_PERF_USER_STACK_DUMP=y CONFIG_HAVE_ARCH_JUMP_LABEL=y CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y CONFIG_MMU_GATHER_TABLE_FREE=y CONFIG_MMU_GATHER_RCU_TABLE_FREE=y CONFIG_MMU_GATHER_NO_GATHER=y CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y CONFIG_HAVE_CMPXCHG_LOCAL=y CONFIG_HAVE_CMPXCHG_DOUBLE=y CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y CONFIG_HAVE_ARCH_SECCOMP=y CONFIG_HAVE_ARCH_SECCOMP_FILTER=y CONFIG_SECCOMP=y CONFIG_SECCOMP_FILTER=y # CONFIG_SECCOMP_CACHE_DEBUG is not set CONFIG_LTO_NONE=y CONFIG_HAVE_VIRT_CPU_ACCOUNTING=y CONFIG_HAVE_VIRT_CPU_ACCOUNTING_IDLE=y CONFIG_ARCH_HAS_SCALED_CPUTIME=y CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y CONFIG_HAVE_ARCH_SOFT_DIRTY=y CONFIG_HAVE_MOD_ARCH_SPECIFIC=y CONFIG_MODULES_USE_ELF_RELA=y CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y CONFIG_ALTERNATE_USER_ADDRESS_SPACE=y CONFIG_ARCH_HAS_ELF_RANDOMIZE=y CONFIG_PAGE_SIZE_LESS_THAN_64KB=y CONFIG_PAGE_SIZE_LESS_THAN_256KB=y CONFIG_HAVE_RELIABLE_STACKTRACE=y CONFIG_CLONE_BACKWARDS2=y CONFIG_OLD_SIGSUSPEND3=y CONFIG_OLD_SIGACTION=y CONFIG_COMPAT_OLD_SIGACTION=y CONFIG_COMPAT_32BIT_TIME=y CONFIG_HAVE_ARCH_VMAP_STACK=y CONFIG_VMAP_STACK=y CONFIG_HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET=y CONFIG_RANDOMIZE_KSTACK_OFFSET=y # CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT is not set CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y CONFIG_STRICT_KERNEL_RWX=y CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y CONFIG_STRICT_MODULE_RWX=y # CONFIG_LOCK_EVENT_COUNTS is not set CONFIG_ARCH_HAS_MEM_ENCRYPT=y CONFIG_ARCH_HAS_VDSO_DATA=y CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y # # GCOV-based kernel profiling # # CONFIG_GCOV_KERNEL is not set CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y # end of GCOV-based kernel profiling CONFIG_HAVE_GCC_PLUGINS=y # CONFIG_GCC_PLUGINS is not set # end of General architecture-dependent options CONFIG_RT_MUTEXES=y CONFIG_BASE_SMALL=0 CONFIG_MODULE_SIG_FORMAT=y CONFIG_MODULES=y CONFIG_MODULE_FORCE_LOAD=y CONFIG_MODULE_UNLOAD=y CONFIG_MODULE_FORCE_UNLOAD=y # CONFIG_MODULE_UNLOAD_TAINT_TRACKING is not set CONFIG_MODVERSIONS=y CONFIG_ASM_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y CONFIG_MODULE_SIG=y # CONFIG_MODULE_SIG_FORCE is not set CONFIG_MODULE_SIG_ALL=y # CONFIG_MODULE_SIG_SHA1 is not set # CONFIG_MODULE_SIG_SHA224 is not set CONFIG_MODULE_SIG_SHA256=y # CONFIG_MODULE_SIG_SHA384 is not set # CONFIG_MODULE_SIG_SHA512 is not set CONFIG_MODULE_SIG_HASH="sha256" CONFIG_MODULE_COMPRESS_NONE=y # CONFIG_MODULE_COMPRESS_GZIP is not set # CONFIG_MODULE_COMPRESS_XZ is not set # CONFIG_MODULE_COMPRESS_ZSTD is not set # CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is not set CONFIG_MODPROBE_PATH="/sbin/modprobe" # CONFIG_TRIM_UNUSED_KSYMS is not set CONFIG_MODULES_TREE_LOOKUP=y CONFIG_BLOCK=y CONFIG_BLOCK_LEGACY_AUTOLOAD=y CONFIG_BLK_RQ_ALLOC_TIME=y CONFIG_BLK_CGROUP_RWSTAT=y CONFIG_BLK_DEV_BSG_COMMON=y CONFIG_BLK_ICQ=y CONFIG_BLK_DEV_BSGLIB=y CONFIG_BLK_DEV_INTEGRITY=y CONFIG_BLK_DEV_INTEGRITY_T10=y # CONFIG_BLK_DEV_ZONED is not set CONFIG_BLK_DEV_THROTTLING=y # CONFIG_BLK_DEV_THROTTLING_LOW is not set CONFIG_BLK_WBT=y CONFIG_BLK_WBT_MQ=y CONFIG_BLK_CGROUP_IOLATENCY=y CONFIG_BLK_CGROUP_IOCOST=y CONFIG_BLK_CGROUP_IOPRIO=y CONFIG_BLK_DEBUG_FS=y # CONFIG_BLK_SED_OPAL is not set CONFIG_BLK_INLINE_ENCRYPTION=y CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK=y # # Partition Types # CONFIG_PARTITION_ADVANCED=y # CONFIG_ACORN_PARTITION is not set # CONFIG_AIX_PARTITION is not set # CONFIG_OSF_PARTITION is not set # CONFIG_AMIGA_PARTITION is not set # CONFIG_ATARI_PARTITION is not set CONFIG_IBM_PARTITION=y # CONFIG_MAC_PARTITION is not set CONFIG_MSDOS_PARTITION=y CONFIG_BSD_DISKLABEL=y CONFIG_MINIX_SUBPARTITION=y CONFIG_SOLARIS_X86_PARTITION=y CONFIG_UNIXWARE_DISKLABEL=y # CONFIG_LDM_PARTITION is not set # CONFIG_SGI_PARTITION is not set # CONFIG_ULTRIX_PARTITION is not set # CONFIG_SUN_PARTITION is not set # CONFIG_KARMA_PARTITION is not set CONFIG_EFI_PARTITION=y # CONFIG_SYSV68_PARTITION is not set # CONFIG_CMDLINE_PARTITION is not set # end of Partition Types CONFIG_BLOCK_COMPAT=y CONFIG_BLK_MQ_PCI=y CONFIG_BLK_MQ_VIRTIO=y CONFIG_BLK_MQ_RDMA=y CONFIG_BLOCK_HOLDER_DEPRECATED=y CONFIG_BLK_MQ_STACKING=y # # IO Schedulers # CONFIG_MQ_IOSCHED_DEADLINE=y CONFIG_MQ_IOSCHED_KYBER=y CONFIG_IOSCHED_BFQ=y CONFIG_BFQ_GROUP_IOSCHED=y # CONFIG_BFQ_CGROUP_DEBUG is not set # end of IO Schedulers CONFIG_PREEMPT_NOTIFIERS=y CONFIG_PADATA=y CONFIG_ASN1=y CONFIG_ARCH_INLINE_SPIN_TRYLOCK=y CONFIG_ARCH_INLINE_SPIN_TRYLOCK_BH=y CONFIG_ARCH_INLINE_SPIN_LOCK=y CONFIG_ARCH_INLINE_SPIN_LOCK_BH=y CONFIG_ARCH_INLINE_SPIN_LOCK_IRQ=y CONFIG_ARCH_INLINE_SPIN_LOCK_IRQSAVE=y CONFIG_ARCH_INLINE_SPIN_UNLOCK=y CONFIG_ARCH_INLINE_SPIN_UNLOCK_BH=y CONFIG_ARCH_INLINE_SPIN_UNLOCK_IRQ=y CONFIG_ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE=y CONFIG_ARCH_INLINE_READ_TRYLOCK=y CONFIG_ARCH_INLINE_READ_LOCK=y CONFIG_ARCH_INLINE_READ_LOCK_BH=y CONFIG_ARCH_INLINE_READ_LOCK_IRQ=y CONFIG_ARCH_INLINE_READ_LOCK_IRQSAVE=y CONFIG_ARCH_INLINE_READ_UNLOCK=y CONFIG_ARCH_INLINE_READ_UNLOCK_BH=y CONFIG_ARCH_INLINE_READ_UNLOCK_IRQ=y CONFIG_ARCH_INLINE_READ_UNLOCK_IRQRESTORE=y CONFIG_ARCH_INLINE_WRITE_TRYLOCK=y CONFIG_ARCH_INLINE_WRITE_LOCK=y CONFIG_ARCH_INLINE_WRITE_LOCK_BH=y CONFIG_ARCH_INLINE_WRITE_LOCK_IRQ=y CONFIG_ARCH_INLINE_WRITE_LOCK_IRQSAVE=y CONFIG_ARCH_INLINE_WRITE_UNLOCK=y CONFIG_ARCH_INLINE_WRITE_UNLOCK_BH=y CONFIG_ARCH_INLINE_WRITE_UNLOCK_IRQ=y CONFIG_ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE=y CONFIG_UNINLINE_SPIN_UNLOCK=y CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y CONFIG_MUTEX_SPIN_ON_OWNER=y CONFIG_RWSEM_SPIN_ON_OWNER=y CONFIG_LOCK_SPIN_ON_OWNER=y CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y CONFIG_FREEZER=y # # Executable file formats # CONFIG_BINFMT_ELF=y CONFIG_COMPAT_BINFMT_ELF=y CONFIG_ARCH_BINFMT_ELF_STATE=y CONFIG_ELFCORE=y CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y CONFIG_BINFMT_SCRIPT=y CONFIG_BINFMT_MISC=m CONFIG_COREDUMP=y # end of Executable file formats # # Memory Management options # CONFIG_ZPOOL=y CONFIG_SWAP=y CONFIG_ZSWAP=y # CONFIG_ZSWAP_DEFAULT_ON is not set # CONFIG_ZSWAP_COMPRESSOR_DEFAULT_DEFLATE is not set CONFIG_ZSWAP_COMPRESSOR_DEFAULT_LZO=y # CONFIG_ZSWAP_COMPRESSOR_DEFAULT_842 is not set # CONFIG_ZSWAP_COMPRESSOR_DEFAULT_LZ4 is not set # CONFIG_ZSWAP_COMPRESSOR_DEFAULT_LZ4HC is not set # CONFIG_ZSWAP_COMPRESSOR_DEFAULT_ZSTD is not set CONFIG_ZSWAP_COMPRESSOR_DEFAULT="lzo" CONFIG_ZSWAP_ZPOOL_DEFAULT_ZBUD=y # CONFIG_ZSWAP_ZPOOL_DEFAULT_Z3FOLD is not set # CONFIG_ZSWAP_ZPOOL_DEFAULT_ZSMALLOC is not set CONFIG_ZSWAP_ZPOOL_DEFAULT="zbud" CONFIG_ZBUD=y # CONFIG_Z3FOLD is not set CONFIG_ZSMALLOC=y CONFIG_ZSMALLOC_STAT=y # # SLAB allocator options # # CONFIG_SLAB is not set CONFIG_SLUB=y # CONFIG_SLOB is not set CONFIG_SLAB_MERGE_DEFAULT=y # CONFIG_SLAB_FREELIST_RANDOM is not set # CONFIG_SLAB_FREELIST_HARDENED is not set # CONFIG_SLUB_STATS is not set CONFIG_SLUB_CPU_PARTIAL=y # end of SLAB allocator options # CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set # CONFIG_COMPAT_BRK is not set CONFIG_SPARSEMEM=y CONFIG_SPARSEMEM_EXTREME=y CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y CONFIG_SPARSEMEM_VMEMMAP=y CONFIG_HAVE_MEMBLOCK_PHYS_MAP=y CONFIG_HAVE_FAST_GUP=y CONFIG_NUMA_KEEP_MEMINFO=y CONFIG_MEMORY_ISOLATION=y CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y CONFIG_MEMORY_HOTPLUG=y # CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE is not set CONFIG_MEMORY_HOTREMOVE=y CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_MEMORY_BALLOON=y CONFIG_BALLOON_COMPACTION=y CONFIG_COMPACTION=y CONFIG_PAGE_REPORTING=y CONFIG_MIGRATION=y CONFIG_CONTIG_ALLOC=y CONFIG_PHYS_ADDR_T_64BIT=y CONFIG_MMU_NOTIFIER=y CONFIG_KSM=y CONFIG_DEFAULT_MMAP_MIN_ADDR=4096 CONFIG_TRANSPARENT_HUGEPAGE=y CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y # CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set # CONFIG_READ_ONLY_THP_FOR_FS is not set CONFIG_FRONTSWAP=y CONFIG_CMA=y # CONFIG_CMA_DEBUG is not set # CONFIG_CMA_DEBUGFS is not set CONFIG_CMA_SYSFS=y CONFIG_CMA_AREAS=7 CONFIG_MEM_SOFT_DIRTY=y CONFIG_DEFERRED_STRUCT_PAGE_INIT=y CONFIG_PAGE_IDLE_FLAG=y CONFIG_IDLE_PAGE_TRACKING=y CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y CONFIG_ZONE_DMA=y CONFIG_HMM_MIRROR=y CONFIG_VM_EVENT_COUNTERS=y CONFIG_PERCPU_STATS=y # CONFIG_GUP_TEST is not set CONFIG_ARCH_HAS_PTE_SPECIAL=y CONFIG_ANON_VMA_NAME=y CONFIG_USERFAULTFD=y # # Data Access Monitoring # # CONFIG_DAMON is not set # end of Data Access Monitoring # end of Memory Management options CONFIG_NET=y CONFIG_NET_INGRESS=y CONFIG_NET_EGRESS=y CONFIG_NET_REDIRECT=y CONFIG_SKB_EXTENSIONS=y # # Networking options # CONFIG_PACKET=y CONFIG_PACKET_DIAG=m CONFIG_UNIX=y CONFIG_UNIX_SCM=y CONFIG_AF_UNIX_OOB=y CONFIG_UNIX_DIAG=m # CONFIG_TLS is not set CONFIG_XFRM=y CONFIG_XFRM_ALGO=m CONFIG_XFRM_USER=m # CONFIG_XFRM_INTERFACE is not set # CONFIG_XFRM_SUB_POLICY is not set # CONFIG_XFRM_MIGRATE is not set # CONFIG_XFRM_STATISTICS is not set CONFIG_XFRM_AH=m CONFIG_XFRM_ESP=m CONFIG_XFRM_IPCOMP=m CONFIG_NET_KEY=m # CONFIG_NET_KEY_MIGRATE is not set CONFIG_XFRM_ESPINTCP=y CONFIG_IUCV=y CONFIG_AFIUCV=m CONFIG_SMC=m CONFIG_SMC_DIAG=m CONFIG_INET=y CONFIG_IP_MULTICAST=y CONFIG_IP_ADVANCED_ROUTER=y # CONFIG_IP_FIB_TRIE_STATS is not set CONFIG_IP_MULTIPLE_TABLES=y CONFIG_IP_ROUTE_MULTIPATH=y CONFIG_IP_ROUTE_VERBOSE=y CONFIG_IP_ROUTE_CLASSID=y # CONFIG_IP_PNP is not set CONFIG_NET_IPIP=m CONFIG_NET_IPGRE_DEMUX=m CONFIG_NET_IP_TUNNEL=m CONFIG_NET_IPGRE=m CONFIG_NET_IPGRE_BROADCAST=y CONFIG_IP_MROUTE_COMMON=y CONFIG_IP_MROUTE=y CONFIG_IP_MROUTE_MULTIPLE_TABLES=y CONFIG_IP_PIMSM_V1=y CONFIG_IP_PIMSM_V2=y CONFIG_SYN_COOKIES=y CONFIG_NET_IPVTI=m CONFIG_NET_UDP_TUNNEL=m # CONFIG_NET_FOU is not set # CONFIG_NET_FOU_IP_TUNNELS is not set CONFIG_INET_AH=m CONFIG_INET_ESP=m # CONFIG_INET_ESP_OFFLOAD is not set CONFIG_INET_ESPINTCP=y CONFIG_INET_IPCOMP=m CONFIG_INET_XFRM_TUNNEL=m CONFIG_INET_TUNNEL=m CONFIG_INET_DIAG=m CONFIG_INET_TCP_DIAG=m CONFIG_INET_UDP_DIAG=m # CONFIG_INET_RAW_DIAG is not set # CONFIG_INET_DIAG_DESTROY is not set CONFIG_TCP_CONG_ADVANCED=y CONFIG_TCP_CONG_BIC=m CONFIG_TCP_CONG_CUBIC=y CONFIG_TCP_CONG_WESTWOOD=m CONFIG_TCP_CONG_HTCP=m CONFIG_TCP_CONG_HSTCP=m CONFIG_TCP_CONG_HYBLA=m CONFIG_TCP_CONG_VEGAS=m # CONFIG_TCP_CONG_NV is not set CONFIG_TCP_CONG_SCALABLE=m CONFIG_TCP_CONG_LP=m CONFIG_TCP_CONG_VENO=m CONFIG_TCP_CONG_YEAH=m CONFIG_TCP_CONG_ILLINOIS=m # CONFIG_TCP_CONG_DCTCP is not set # CONFIG_TCP_CONG_CDG is not set # CONFIG_TCP_CONG_BBR is not set CONFIG_DEFAULT_CUBIC=y # CONFIG_DEFAULT_RENO is not set CONFIG_DEFAULT_TCP_CONG="cubic" # CONFIG_TCP_MD5SIG is not set CONFIG_IPV6=y CONFIG_IPV6_ROUTER_PREF=y # CONFIG_IPV6_ROUTE_INFO is not set # CONFIG_IPV6_OPTIMISTIC_DAD is not set CONFIG_INET6_AH=m CONFIG_INET6_ESP=m # CONFIG_INET6_ESP_OFFLOAD is not set CONFIG_INET6_ESPINTCP=y CONFIG_INET6_IPCOMP=m CONFIG_IPV6_MIP6=m # CONFIG_IPV6_ILA is not set CONFIG_INET6_XFRM_TUNNEL=m CONFIG_INET6_TUNNEL=m CONFIG_IPV6_VTI=m CONFIG_IPV6_SIT=m # CONFIG_IPV6_SIT_6RD is not set CONFIG_IPV6_NDISC_NODETYPE=y CONFIG_IPV6_TUNNEL=m CONFIG_IPV6_GRE=m CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_IPV6_SUBTREES=y # CONFIG_IPV6_MROUTE is not set # CONFIG_IPV6_SEG6_LWTUNNEL is not set # CONFIG_IPV6_SEG6_HMAC is not set CONFIG_IPV6_RPL_LWTUNNEL=y # CONFIG_IPV6_IOAM6_LWTUNNEL is not set # CONFIG_NETLABEL is not set CONFIG_MPTCP=y CONFIG_INET_MPTCP_DIAG=m CONFIG_MPTCP_IPV6=y # CONFIG_MPTCP_KUNIT_TEST is not set CONFIG_NETWORK_SECMARK=y # CONFIG_NETWORK_PHY_TIMESTAMPING is not set CONFIG_NETFILTER=y CONFIG_NETFILTER_ADVANCED=y CONFIG_BRIDGE_NETFILTER=m # # Core Netfilter Configuration # CONFIG_NETFILTER_INGRESS=y CONFIG_NETFILTER_EGRESS=y CONFIG_NETFILTER_SKIP_EGRESS=y CONFIG_NETFILTER_NETLINK=m CONFIG_NETFILTER_FAMILY_BRIDGE=y CONFIG_NETFILTER_FAMILY_ARP=y CONFIG_NETFILTER_NETLINK_HOOK=m CONFIG_NETFILTER_NETLINK_ACCT=m CONFIG_NETFILTER_NETLINK_QUEUE=m CONFIG_NETFILTER_NETLINK_LOG=m CONFIG_NETFILTER_NETLINK_OSF=m CONFIG_NF_CONNTRACK=m CONFIG_NF_LOG_SYSLOG=m CONFIG_NETFILTER_CONNCOUNT=m CONFIG_NF_CONNTRACK_MARK=y CONFIG_NF_CONNTRACK_SECMARK=y # CONFIG_NF_CONNTRACK_ZONES is not set CONFIG_NF_CONNTRACK_PROCFS=y CONFIG_NF_CONNTRACK_EVENTS=y CONFIG_NF_CONNTRACK_TIMEOUT=y CONFIG_NF_CONNTRACK_TIMESTAMP=y CONFIG_NF_CONNTRACK_LABELS=y CONFIG_NF_CT_PROTO_DCCP=y CONFIG_NF_CT_PROTO_GRE=y CONFIG_NF_CT_PROTO_SCTP=y CONFIG_NF_CT_PROTO_UDPLITE=y CONFIG_NF_CONNTRACK_AMANDA=m CONFIG_NF_CONNTRACK_FTP=m CONFIG_NF_CONNTRACK_H323=m CONFIG_NF_CONNTRACK_IRC=m CONFIG_NF_CONNTRACK_BROADCAST=m CONFIG_NF_CONNTRACK_NETBIOS_NS=m CONFIG_NF_CONNTRACK_SNMP=m CONFIG_NF_CONNTRACK_PPTP=m CONFIG_NF_CONNTRACK_SANE=m CONFIG_NF_CONNTRACK_SIP=m CONFIG_NF_CONNTRACK_TFTP=m CONFIG_NF_CT_NETLINK=m CONFIG_NF_CT_NETLINK_TIMEOUT=m # CONFIG_NETFILTER_NETLINK_GLUE_CT is not set CONFIG_NF_NAT=m CONFIG_NF_NAT_AMANDA=m CONFIG_NF_NAT_FTP=m CONFIG_NF_NAT_IRC=m CONFIG_NF_NAT_SIP=m CONFIG_NF_NAT_TFTP=m CONFIG_NF_NAT_MASQUERADE=y CONFIG_NF_TABLES=m CONFIG_NF_TABLES_INET=y # CONFIG_NF_TABLES_NETDEV is not set # CONFIG_NFT_NUMGEN is not set CONFIG_NFT_CT=m # CONFIG_NFT_CONNLIMIT is not set CONFIG_NFT_LOG=m CONFIG_NFT_LIMIT=m # CONFIG_NFT_MASQ is not set # CONFIG_NFT_REDIR is not set CONFIG_NFT_NAT=m # CONFIG_NFT_TUNNEL is not set CONFIG_NFT_OBJREF=m # CONFIG_NFT_QUEUE is not set # CONFIG_NFT_QUOTA is not set CONFIG_NFT_REJECT=m CONFIG_NFT_REJECT_INET=m CONFIG_NFT_COMPAT=m CONFIG_NFT_HASH=m CONFIG_NFT_FIB=m CONFIG_NFT_FIB_INET=m # CONFIG_NFT_XFRM is not set # CONFIG_NFT_SOCKET is not set # CONFIG_NFT_OSF is not set # CONFIG_NFT_TPROXY is not set # CONFIG_NFT_SYNPROXY is not set # CONFIG_NF_FLOW_TABLE is not set CONFIG_NETFILTER_XTABLES=m CONFIG_NETFILTER_XTABLES_COMPAT=y # # Xtables combined modules # CONFIG_NETFILTER_XT_MARK=m CONFIG_NETFILTER_XT_CONNMARK=m CONFIG_NETFILTER_XT_SET=m # # Xtables targets # CONFIG_NETFILTER_XT_TARGET_AUDIT=m CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m CONFIG_NETFILTER_XT_TARGET_CONNMARK=m CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=m CONFIG_NETFILTER_XT_TARGET_CT=m CONFIG_NETFILTER_XT_TARGET_DSCP=m CONFIG_NETFILTER_XT_TARGET_HL=m CONFIG_NETFILTER_XT_TARGET_HMARK=m CONFIG_NETFILTER_XT_TARGET_IDLETIMER=m CONFIG_NETFILTER_XT_TARGET_LOG=m CONFIG_NETFILTER_XT_TARGET_MARK=m CONFIG_NETFILTER_XT_NAT=m # CONFIG_NETFILTER_XT_TARGET_NETMAP is not set CONFIG_NETFILTER_XT_TARGET_NFLOG=m CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m # CONFIG_NETFILTER_XT_TARGET_NOTRACK is not set CONFIG_NETFILTER_XT_TARGET_RATEEST=m # CONFIG_NETFILTER_XT_TARGET_REDIRECT is not set CONFIG_NETFILTER_XT_TARGET_MASQUERADE=m CONFIG_NETFILTER_XT_TARGET_TEE=m CONFIG_NETFILTER_XT_TARGET_TPROXY=m CONFIG_NETFILTER_XT_TARGET_TRACE=m CONFIG_NETFILTER_XT_TARGET_SECMARK=m CONFIG_NETFILTER_XT_TARGET_TCPMSS=m CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m # # Xtables matches # CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m CONFIG_NETFILTER_XT_MATCH_BPF=m # CONFIG_NETFILTER_XT_MATCH_CGROUP is not set CONFIG_NETFILTER_XT_MATCH_CLUSTER=m CONFIG_NETFILTER_XT_MATCH_COMMENT=m CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m CONFIG_NETFILTER_XT_MATCH_CONNLABEL=m CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m CONFIG_NETFILTER_XT_MATCH_CONNMARK=m CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m CONFIG_NETFILTER_XT_MATCH_CPU=m CONFIG_NETFILTER_XT_MATCH_DCCP=m CONFIG_NETFILTER_XT_MATCH_DEVGROUP=m CONFIG_NETFILTER_XT_MATCH_DSCP=m CONFIG_NETFILTER_XT_MATCH_ECN=m CONFIG_NETFILTER_XT_MATCH_ESP=m CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m CONFIG_NETFILTER_XT_MATCH_HELPER=m CONFIG_NETFILTER_XT_MATCH_HL=m # CONFIG_NETFILTER_XT_MATCH_IPCOMP is not set CONFIG_NETFILTER_XT_MATCH_IPRANGE=m CONFIG_NETFILTER_XT_MATCH_IPVS=m CONFIG_NETFILTER_XT_MATCH_L2TP=m CONFIG_NETFILTER_XT_MATCH_LENGTH=m CONFIG_NETFILTER_XT_MATCH_LIMIT=m CONFIG_NETFILTER_XT_MATCH_MAC=m CONFIG_NETFILTER_XT_MATCH_MARK=m CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m CONFIG_NETFILTER_XT_MATCH_NFACCT=m CONFIG_NETFILTER_XT_MATCH_OSF=m CONFIG_NETFILTER_XT_MATCH_OWNER=m CONFIG_NETFILTER_XT_MATCH_POLICY=m CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m CONFIG_NETFILTER_XT_MATCH_QUOTA=m CONFIG_NETFILTER_XT_MATCH_RATEEST=m CONFIG_NETFILTER_XT_MATCH_REALM=m CONFIG_NETFILTER_XT_MATCH_RECENT=m CONFIG_NETFILTER_XT_MATCH_SCTP=m # CONFIG_NETFILTER_XT_MATCH_SOCKET is not set CONFIG_NETFILTER_XT_MATCH_STATE=m CONFIG_NETFILTER_XT_MATCH_STATISTIC=m CONFIG_NETFILTER_XT_MATCH_STRING=m CONFIG_NETFILTER_XT_MATCH_TCPMSS=m CONFIG_NETFILTER_XT_MATCH_TIME=m CONFIG_NETFILTER_XT_MATCH_U32=m # end of Core Netfilter Configuration CONFIG_IP_SET=m CONFIG_IP_SET_MAX=256 CONFIG_IP_SET_BITMAP_IP=m CONFIG_IP_SET_BITMAP_IPMAC=m CONFIG_IP_SET_BITMAP_PORT=m CONFIG_IP_SET_HASH_IP=m # CONFIG_IP_SET_HASH_IPMARK is not set CONFIG_IP_SET_HASH_IPPORT=m CONFIG_IP_SET_HASH_IPPORTIP=m CONFIG_IP_SET_HASH_IPPORTNET=m # CONFIG_IP_SET_HASH_IPMAC is not set # CONFIG_IP_SET_HASH_MAC is not set CONFIG_IP_SET_HASH_NETPORTNET=m CONFIG_IP_SET_HASH_NET=m CONFIG_IP_SET_HASH_NETNET=m CONFIG_IP_SET_HASH_NETPORT=m CONFIG_IP_SET_HASH_NETIFACE=m CONFIG_IP_SET_LIST_SET=m CONFIG_IP_VS=m # CONFIG_IP_VS_IPV6 is not set # CONFIG_IP_VS_DEBUG is not set CONFIG_IP_VS_TAB_BITS=12 # # IPVS transport protocol load balancing support # CONFIG_IP_VS_PROTO_TCP=y CONFIG_IP_VS_PROTO_UDP=y CONFIG_IP_VS_PROTO_AH_ESP=y CONFIG_IP_VS_PROTO_ESP=y CONFIG_IP_VS_PROTO_AH=y # CONFIG_IP_VS_PROTO_SCTP is not set # # IPVS scheduler # CONFIG_IP_VS_RR=m CONFIG_IP_VS_WRR=m CONFIG_IP_VS_LC=m CONFIG_IP_VS_WLC=m # CONFIG_IP_VS_FO is not set # CONFIG_IP_VS_OVF is not set CONFIG_IP_VS_LBLC=m CONFIG_IP_VS_LBLCR=m CONFIG_IP_VS_DH=m CONFIG_IP_VS_SH=m # CONFIG_IP_VS_MH is not set CONFIG_IP_VS_SED=m CONFIG_IP_VS_NQ=m CONFIG_IP_VS_TWOS=m # # IPVS SH scheduler # CONFIG_IP_VS_SH_TAB_BITS=8 # # IPVS MH scheduler # CONFIG_IP_VS_MH_TAB_INDEX=12 # # IPVS application helper # CONFIG_IP_VS_FTP=m CONFIG_IP_VS_NFCT=y CONFIG_IP_VS_PE_SIP=m # # IP: Netfilter Configuration # CONFIG_NF_DEFRAG_IPV4=m # CONFIG_NF_SOCKET_IPV4 is not set CONFIG_NF_TPROXY_IPV4=m CONFIG_NF_TABLES_IPV4=y CONFIG_NFT_REJECT_IPV4=m # CONFIG_NFT_DUP_IPV4 is not set CONFIG_NFT_FIB_IPV4=m CONFIG_NF_TABLES_ARP=y CONFIG_NF_DUP_IPV4=m # CONFIG_NF_LOG_ARP is not set CONFIG_NF_LOG_IPV4=m CONFIG_NF_REJECT_IPV4=m CONFIG_NF_NAT_SNMP_BASIC=m CONFIG_NF_NAT_PPTP=m CONFIG_NF_NAT_H323=m CONFIG_IP_NF_IPTABLES=m CONFIG_IP_NF_MATCH_AH=m CONFIG_IP_NF_MATCH_ECN=m CONFIG_IP_NF_MATCH_RPFILTER=m CONFIG_IP_NF_MATCH_TTL=m CONFIG_IP_NF_FILTER=m CONFIG_IP_NF_TARGET_REJECT=m # CONFIG_IP_NF_TARGET_SYNPROXY is not set CONFIG_IP_NF_NAT=m CONFIG_IP_NF_TARGET_MASQUERADE=m # CONFIG_IP_NF_TARGET_NETMAP is not set # CONFIG_IP_NF_TARGET_REDIRECT is not set CONFIG_IP_NF_MANGLE=m CONFIG_IP_NF_TARGET_CLUSTERIP=m CONFIG_IP_NF_TARGET_ECN=m CONFIG_IP_NF_TARGET_TTL=m CONFIG_IP_NF_RAW=m CONFIG_IP_NF_SECURITY=m CONFIG_IP_NF_ARPTABLES=m CONFIG_IP_NF_ARPFILTER=m CONFIG_IP_NF_ARP_MANGLE=m # end of IP: Netfilter Configuration # # IPv6: Netfilter Configuration # # CONFIG_NF_SOCKET_IPV6 is not set CONFIG_NF_TPROXY_IPV6=m CONFIG_NF_TABLES_IPV6=y CONFIG_NFT_REJECT_IPV6=m # CONFIG_NFT_DUP_IPV6 is not set CONFIG_NFT_FIB_IPV6=m CONFIG_NF_DUP_IPV6=m CONFIG_NF_REJECT_IPV6=m CONFIG_NF_LOG_IPV6=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_MATCH_AH=m CONFIG_IP6_NF_MATCH_EUI64=m CONFIG_IP6_NF_MATCH_FRAG=m CONFIG_IP6_NF_MATCH_OPTS=m CONFIG_IP6_NF_MATCH_HL=m CONFIG_IP6_NF_MATCH_IPV6HEADER=m CONFIG_IP6_NF_MATCH_MH=m CONFIG_IP6_NF_MATCH_RPFILTER=m CONFIG_IP6_NF_MATCH_RT=m # CONFIG_IP6_NF_MATCH_SRH is not set CONFIG_IP6_NF_TARGET_HL=m CONFIG_IP6_NF_FILTER=m CONFIG_IP6_NF_TARGET_REJECT=m # CONFIG_IP6_NF_TARGET_SYNPROXY is not set CONFIG_IP6_NF_MANGLE=m CONFIG_IP6_NF_RAW=m CONFIG_IP6_NF_SECURITY=m CONFIG_IP6_NF_NAT=m CONFIG_IP6_NF_TARGET_MASQUERADE=m # CONFIG_IP6_NF_TARGET_NPT is not set # end of IPv6: Netfilter Configuration CONFIG_NF_DEFRAG_IPV6=m CONFIG_NF_TABLES_BRIDGE=m # CONFIG_NFT_BRIDGE_META is not set # CONFIG_NFT_BRIDGE_REJECT is not set # CONFIG_NF_CONNTRACK_BRIDGE is not set # CONFIG_BRIDGE_NF_EBTABLES is not set # CONFIG_BPFILTER is not set # CONFIG_IP_DCCP is not set CONFIG_IP_SCTP=m # CONFIG_SCTP_DBG_OBJCNT is not set CONFIG_SCTP_DEFAULT_COOKIE_HMAC_MD5=y # CONFIG_SCTP_DEFAULT_COOKIE_HMAC_SHA1 is not set # CONFIG_SCTP_DEFAULT_COOKIE_HMAC_NONE is not set CONFIG_SCTP_COOKIE_HMAC_MD5=y # CONFIG_SCTP_COOKIE_HMAC_SHA1 is not set CONFIG_INET_SCTP_DIAG=m CONFIG_RDS=m CONFIG_RDS_RDMA=m CONFIG_RDS_TCP=m # CONFIG_RDS_DEBUG is not set # CONFIG_TIPC is not set # CONFIG_ATM is not set CONFIG_L2TP=m CONFIG_L2TP_DEBUGFS=m CONFIG_L2TP_V3=y CONFIG_L2TP_IP=m CONFIG_L2TP_ETH=m CONFIG_STP=y CONFIG_GARP=m CONFIG_BRIDGE=y CONFIG_BRIDGE_IGMP_SNOOPING=y # CONFIG_BRIDGE_VLAN_FILTERING is not set CONFIG_BRIDGE_MRP=y # CONFIG_BRIDGE_CFM is not set # CONFIG_NET_DSA is not set CONFIG_VLAN_8021Q=m CONFIG_VLAN_8021Q_GVRP=y # CONFIG_VLAN_8021Q_MVRP is not set # CONFIG_DECNET is not set CONFIG_LLC=y # CONFIG_LLC2 is not set # CONFIG_ATALK is not set # CONFIG_X25 is not set # CONFIG_LAPB is not set # CONFIG_PHONET is not set # CONFIG_6LOWPAN is not set # CONFIG_IEEE802154 is not set CONFIG_NET_SCHED=y # # Queueing/Scheduling # CONFIG_NET_SCH_CBQ=m CONFIG_NET_SCH_HTB=m CONFIG_NET_SCH_HFSC=m CONFIG_NET_SCH_PRIO=m CONFIG_NET_SCH_MULTIQ=m CONFIG_NET_SCH_RED=m CONFIG_NET_SCH_SFB=m CONFIG_NET_SCH_SFQ=m CONFIG_NET_SCH_TEQL=m CONFIG_NET_SCH_TBF=m # CONFIG_NET_SCH_CBS is not set # CONFIG_NET_SCH_ETF is not set # CONFIG_NET_SCH_TAPRIO is not set CONFIG_NET_SCH_GRED=m CONFIG_NET_SCH_DSMARK=m CONFIG_NET_SCH_NETEM=m CONFIG_NET_SCH_DRR=m CONFIG_NET_SCH_MQPRIO=m # CONFIG_NET_SCH_SKBPRIO is not set CONFIG_NET_SCH_CHOKE=m CONFIG_NET_SCH_QFQ=m CONFIG_NET_SCH_CODEL=m CONFIG_NET_SCH_FQ_CODEL=m # CONFIG_NET_SCH_CAKE is not set # CONFIG_NET_SCH_FQ is not set # CONFIG_NET_SCH_HHF is not set # CONFIG_NET_SCH_PIE is not set CONFIG_NET_SCH_INGRESS=m CONFIG_NET_SCH_PLUG=m CONFIG_NET_SCH_ETS=m # CONFIG_NET_SCH_DEFAULT is not set # # Classification # CONFIG_NET_CLS=y CONFIG_NET_CLS_BASIC=m CONFIG_NET_CLS_TCINDEX=m CONFIG_NET_CLS_ROUTE4=m CONFIG_NET_CLS_FW=m CONFIG_NET_CLS_U32=m CONFIG_CLS_U32_PERF=y CONFIG_CLS_U32_MARK=y CONFIG_NET_CLS_RSVP=m CONFIG_NET_CLS_RSVP6=m CONFIG_NET_CLS_FLOW=m CONFIG_NET_CLS_CGROUP=y CONFIG_NET_CLS_BPF=m # CONFIG_NET_CLS_FLOWER is not set # CONFIG_NET_CLS_MATCHALL is not set # CONFIG_NET_EMATCH is not set CONFIG_NET_CLS_ACT=y CONFIG_NET_ACT_POLICE=m CONFIG_NET_ACT_GACT=m CONFIG_GACT_PROB=y CONFIG_NET_ACT_MIRRED=m # CONFIG_NET_ACT_SAMPLE is not set CONFIG_NET_ACT_IPT=m CONFIG_NET_ACT_NAT=m CONFIG_NET_ACT_PEDIT=m CONFIG_NET_ACT_SIMP=m CONFIG_NET_ACT_SKBEDIT=m CONFIG_NET_ACT_CSUM=m # CONFIG_NET_ACT_MPLS is not set # CONFIG_NET_ACT_VLAN is not set # CONFIG_NET_ACT_BPF is not set # CONFIG_NET_ACT_CONNMARK is not set # CONFIG_NET_ACT_CTINFO is not set # CONFIG_NET_ACT_SKBMOD is not set # CONFIG_NET_ACT_IFE is not set # CONFIG_NET_ACT_TUNNEL_KEY is not set CONFIG_NET_ACT_GATE=m # CONFIG_NET_TC_SKB_EXT is not set CONFIG_NET_SCH_FIFO=y # CONFIG_DCB is not set CONFIG_DNS_RESOLVER=y # CONFIG_BATMAN_ADV is not set CONFIG_OPENVSWITCH=m CONFIG_OPENVSWITCH_GRE=m CONFIG_OPENVSWITCH_VXLAN=m CONFIG_VSOCKETS=m CONFIG_VSOCKETS_DIAG=m CONFIG_VSOCKETS_LOOPBACK=m CONFIG_VIRTIO_VSOCKETS=m CONFIG_VIRTIO_VSOCKETS_COMMON=m CONFIG_NETLINK_DIAG=m CONFIG_MPLS=y CONFIG_NET_MPLS_GSO=m # CONFIG_MPLS_ROUTING is not set CONFIG_NET_NSH=m # CONFIG_HSR is not set CONFIG_NET_SWITCHDEV=y # CONFIG_NET_L3_MASTER_DEV is not set # CONFIG_QRTR is not set # CONFIG_NET_NCSI is not set CONFIG_PCPU_DEV_REFCNT=y CONFIG_RPS=y CONFIG_RFS_ACCEL=y CONFIG_SOCK_RX_QUEUE_MAPPING=y CONFIG_XPS=y CONFIG_CGROUP_NET_PRIO=y CONFIG_CGROUP_NET_CLASSID=y CONFIG_NET_RX_BUSY_POLL=y CONFIG_BQL=y CONFIG_NET_FLOW_LIMIT=y # # Network testing # CONFIG_NET_PKTGEN=m # CONFIG_NET_DROP_MONITOR is not set # end of Network testing # end of Networking options # CONFIG_CAN is not set # CONFIG_AF_RXRPC is not set # CONFIG_AF_KCM is not set CONFIG_STREAM_PARSER=y # CONFIG_MCTP is not set CONFIG_FIB_RULES=y # CONFIG_RFKILL is not set # CONFIG_NET_9P is not set # CONFIG_CAIF is not set CONFIG_CEPH_LIB=m # CONFIG_CEPH_LIB_PRETTYDEBUG is not set # CONFIG_CEPH_LIB_USE_DNS_RESOLVER is not set # CONFIG_NFC is not set # CONFIG_PSAMPLE is not set # CONFIG_NET_IFE is not set CONFIG_LWTUNNEL=y CONFIG_LWTUNNEL_BPF=y CONFIG_DST_CACHE=y CONFIG_GRO_CELLS=y CONFIG_NET_SOCK_MSG=y CONFIG_NET_DEVLINK=y CONFIG_PAGE_POOL=y # CONFIG_PAGE_POOL_STATS is not set CONFIG_FAILOVER=m CONFIG_ETHTOOL_NETLINK=y # CONFIG_NETDEV_ADDR_LIST_TEST is not set # # Device Drivers # CONFIG_HAVE_PCI=y CONFIG_PCI=y CONFIG_PCI_DOMAINS=y # CONFIG_PCIEPORTBUS is not set # CONFIG_PCIEASPM is not set # CONFIG_PCIE_PTM is not set CONFIG_PCI_MSI=y CONFIG_PCI_MSI_IRQ_DOMAIN=y CONFIG_PCI_MSI_ARCH_FALLBACKS=y # CONFIG_PCI_DEBUG is not set # CONFIG_PCI_REALLOC_ENABLE_AUTO is not set # CONFIG_PCI_STUB is not set # CONFIG_PCI_PF_STUB is not set CONFIG_PCI_ATS=y CONFIG_PCI_IOV=y # CONFIG_PCI_PRI is not set # CONFIG_PCI_PASID is not set # CONFIG_PCIE_BUS_TUNE_OFF is not set CONFIG_PCIE_BUS_DEFAULT=y # CONFIG_PCIE_BUS_SAFE is not set # CONFIG_PCIE_BUS_PERFORMANCE is not set # CONFIG_PCIE_BUS_PEER2PEER is not set CONFIG_HOTPLUG_PCI=y # CONFIG_HOTPLUG_PCI_CPCI is not set # CONFIG_HOTPLUG_PCI_SHPC is not set CONFIG_HOTPLUG_PCI_S390=y # # PCI controller drivers # # # DesignWare PCI Core Support # # CONFIG_PCIE_DW_PLAT_HOST is not set # CONFIG_PCI_MESON is not set # end of DesignWare PCI Core Support # # Mobiveil PCIe Core Support # # end of Mobiveil PCIe Core Support # # Cadence PCIe controllers support # # end of Cadence PCIe controllers support # end of PCI controller drivers # # PCI Endpoint # # CONFIG_PCI_ENDPOINT is not set # end of PCI Endpoint # # PCI switch controller drivers # # CONFIG_PCI_SW_SWITCHTEC is not set # end of PCI switch controller drivers # CONFIG_CXL_BUS is not set # CONFIG_PCCARD is not set # CONFIG_RAPIDIO is not set # # Generic Driver Options # CONFIG_AUXILIARY_BUS=y CONFIG_UEVENT_HELPER=y CONFIG_UEVENT_HELPER_PATH="" CONFIG_DEVTMPFS=y # CONFIG_DEVTMPFS_MOUNT is not set CONFIG_DEVTMPFS_SAFE=y CONFIG_STANDALONE=y CONFIG_PREVENT_FIRMWARE_BUILD=y # # Firmware loader # CONFIG_FW_LOADER=y CONFIG_EXTRA_FIRMWARE="" # CONFIG_FW_LOADER_USER_HELPER is not set # CONFIG_FW_LOADER_COMPRESS is not set # CONFIG_FW_UPLOAD is not set # end of Firmware loader CONFIG_ALLOW_DEV_COREDUMP=y # CONFIG_DEBUG_DRIVER is not set # CONFIG_DEBUG_DEVRES is not set # CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set # CONFIG_TEST_ASYNC_DRIVER_PROBE is not set CONFIG_SYS_HYPERVISOR=y CONFIG_GENERIC_CPU_AUTOPROBE=y CONFIG_GENERIC_CPU_VULNERABILITIES=y CONFIG_DMA_SHARED_BUFFER=y # CONFIG_DMA_FENCE_TRACE is not set # end of Generic Driver Options # # Bus devices # # CONFIG_MHI_BUS is not set # CONFIG_MHI_BUS_EP is not set # end of Bus devices CONFIG_CONNECTOR=y CONFIG_PROC_EVENTS=y # # Firmware Drivers # # # ARM System Control and Management Interface Protocol # # end of ARM System Control and Management Interface Protocol # CONFIG_FIRMWARE_MEMMAP is not set # CONFIG_GOOGLE_FIRMWARE is not set # # Tegra firmware driver # # end of Tegra firmware driver # end of Firmware Drivers # CONFIG_GNSS is not set # CONFIG_MTD is not set # CONFIG_OF is not set # CONFIG_PARPORT is not set CONFIG_BLK_DEV=y # CONFIG_BLK_DEV_NULL_BLK is not set CONFIG_CDROM=m # CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set CONFIG_ZRAM=y CONFIG_ZRAM_DEF_COMP_LZORLE=y # CONFIG_ZRAM_DEF_COMP_ZSTD is not set # CONFIG_ZRAM_DEF_COMP_LZ4 is not set # CONFIG_ZRAM_DEF_COMP_LZO is not set # CONFIG_ZRAM_DEF_COMP_LZ4HC is not set # CONFIG_ZRAM_DEF_COMP_842 is not set CONFIG_ZRAM_DEF_COMP="lzo-rle" # CONFIG_ZRAM_WRITEBACK is not set # CONFIG_ZRAM_MEMORY_TRACKING is not set CONFIG_BLK_DEV_LOOP=m CONFIG_BLK_DEV_LOOP_MIN_COUNT=8 CONFIG_BLK_DEV_DRBD=m # CONFIG_DRBD_FAULT_INJECTION is not set CONFIG_BLK_DEV_NBD=m # CONFIG_BLK_DEV_SX8 is not set CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_COUNT=16 CONFIG_BLK_DEV_RAM_SIZE=32768 # CONFIG_CDROM_PKTCDVD is not set # CONFIG_ATA_OVER_ETH is not set # # S/390 block device drivers # CONFIG_DCSSBLK=m CONFIG_DASD=y CONFIG_DASD_PROFILE=y CONFIG_DASD_ECKD=y CONFIG_DASD_FBA=y CONFIG_DASD_DIAG=y CONFIG_DASD_EER=y CONFIG_SCM_BLOCK=m CONFIG_VIRTIO_BLK=y CONFIG_BLK_DEV_RBD=m # # NVME Support # CONFIG_NVME_CORE=m CONFIG_BLK_DEV_NVME=m # CONFIG_NVME_MULTIPATH is not set # CONFIG_NVME_VERBOSE_ERRORS is not set # CONFIG_NVME_RDMA is not set # CONFIG_NVME_FC is not set # CONFIG_NVME_TCP is not set # CONFIG_NVME_TARGET is not set # end of NVME Support # # Misc devices # # CONFIG_DUMMY_IRQ is not set # CONFIG_PHANTOM is not set # CONFIG_TIFM_CORE is not set CONFIG_ENCLOSURE_SERVICES=m # CONFIG_HP_ILO is not set # CONFIG_SRAM is not set # CONFIG_DW_XDATA_PCIE is not set # CONFIG_PCI_ENDPOINT_TEST is not set # CONFIG_XILINX_SDFEC is not set # CONFIG_C2PORT is not set # # EEPROM support # # CONFIG_EEPROM_93CX6 is not set # end of EEPROM support # CONFIG_CB710_CORE is not set # # Texas Instruments shared transport line discipline # # end of Texas Instruments shared transport line discipline # # Altera FPGA firmware download module (requires I2C) # CONFIG_GENWQE=m CONFIG_GENWQE_PLATFORM_ERROR_RECOVERY=0 # CONFIG_ECHO is not set # CONFIG_BCM_VK is not set # CONFIG_MISC_ALCOR_PCI is not set # CONFIG_MISC_RTSX_PCI is not set # CONFIG_HABANA_AI is not set # CONFIG_UACCE is not set # CONFIG_PVPANIC is not set # end of Misc devices # # SCSI device support # CONFIG_SCSI_MOD=y CONFIG_RAID_ATTRS=m CONFIG_SCSI_COMMON=y CONFIG_SCSI=y CONFIG_SCSI_DMA=y CONFIG_SCSI_NETLINK=y CONFIG_SCSI_PROC_FS=y # # SCSI support type (disk, tape, CD-ROM) # CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=m CONFIG_BLK_DEV_SR=m CONFIG_CHR_DEV_SG=y CONFIG_BLK_DEV_BSG=y CONFIG_CHR_DEV_SCH=m CONFIG_SCSI_ENCLOSURE=m CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_LOGGING=y # CONFIG_SCSI_SCAN_ASYNC is not set # # SCSI Transports # CONFIG_SCSI_SPI_ATTRS=m CONFIG_SCSI_FC_ATTRS=m CONFIG_SCSI_ISCSI_ATTRS=m CONFIG_SCSI_SAS_ATTRS=m CONFIG_SCSI_SAS_LIBSAS=m CONFIG_SCSI_SAS_HOST_SMP=y CONFIG_SCSI_SRP_ATTRS=m # end of SCSI Transports CONFIG_SCSI_LOWLEVEL=y CONFIG_ISCSI_TCP=m # CONFIG_ISCSI_BOOT_SYSFS is not set # CONFIG_SCSI_CXGB3_ISCSI is not set # CONFIG_SCSI_CXGB4_ISCSI is not set # CONFIG_SCSI_BNX2_ISCSI is not set # CONFIG_BE2ISCSI is not set # CONFIG_BLK_DEV_3W_XXXX_RAID is not set # CONFIG_SCSI_HPSA is not set # CONFIG_SCSI_3W_9XXX is not set # CONFIG_SCSI_3W_SAS is not set # CONFIG_SCSI_ACARD is not set # CONFIG_SCSI_AACRAID is not set # CONFIG_SCSI_AIC7XXX is not set # CONFIG_SCSI_AIC79XX is not set # CONFIG_SCSI_AIC94XX is not set # CONFIG_SCSI_MVSAS is not set # CONFIG_SCSI_MVUMI is not set # CONFIG_SCSI_ADVANSYS is not set # CONFIG_SCSI_ARCMSR is not set # CONFIG_SCSI_ESAS2R is not set # CONFIG_MEGARAID_NEWGEN is not set # CONFIG_MEGARAID_LEGACY is not set # CONFIG_MEGARAID_SAS is not set # CONFIG_SCSI_MPT3SAS is not set # CONFIG_SCSI_MPT2SAS is not set # CONFIG_SCSI_MPI3MR is not set # CONFIG_SCSI_HPTIOP is not set # CONFIG_SCSI_MYRB is not set # CONFIG_LIBFC is not set # CONFIG_SCSI_SNIC is not set # CONFIG_SCSI_DMX3191D is not set # CONFIG_SCSI_FDOMAIN_PCI is not set # CONFIG_SCSI_IPS is not set # CONFIG_SCSI_INITIO is not set # CONFIG_SCSI_INIA100 is not set # CONFIG_SCSI_STEX is not set # CONFIG_SCSI_SYM53C8XX_2 is not set # CONFIG_SCSI_QLOGIC_1280 is not set # CONFIG_SCSI_QLA_FC is not set # CONFIG_SCSI_QLA_ISCSI is not set # CONFIG_SCSI_DC395x is not set # CONFIG_SCSI_AM53C974 is not set # CONFIG_SCSI_WD719X is not set CONFIG_SCSI_DEBUG=m CONFIG_ZFCP=m # CONFIG_SCSI_PMCRAID is not set # CONFIG_SCSI_PM8001 is not set # CONFIG_SCSI_BFA_FC is not set CONFIG_SCSI_VIRTIO=m # CONFIG_SCSI_CHELSIO_FCOE is not set CONFIG_SCSI_DH=y CONFIG_SCSI_DH_RDAC=m CONFIG_SCSI_DH_HP_SW=m CONFIG_SCSI_DH_EMC=m CONFIG_SCSI_DH_ALUA=m # end of SCSI device support # CONFIG_ATA is not set CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_AUTODETECT=y CONFIG_MD_LINEAR=m CONFIG_MD_RAID0=m CONFIG_MD_RAID1=m CONFIG_MD_RAID10=m CONFIG_MD_RAID456=m CONFIG_MD_MULTIPATH=m CONFIG_MD_FAULTY=m CONFIG_MD_CLUSTER=m CONFIG_BCACHE=m # CONFIG_BCACHE_DEBUG is not set # CONFIG_BCACHE_CLOSURES_DEBUG is not set # CONFIG_BCACHE_ASYNC_REGISTRATION is not set CONFIG_BLK_DEV_DM_BUILTIN=y CONFIG_BLK_DEV_DM=y # CONFIG_DM_DEBUG is not set CONFIG_DM_BUFIO=m # CONFIG_DM_DEBUG_BLOCK_MANAGER_LOCKING is not set CONFIG_DM_BIO_PRISON=m CONFIG_DM_PERSISTENT_DATA=m CONFIG_DM_UNSTRIPED=m CONFIG_DM_CRYPT=m CONFIG_DM_SNAPSHOT=m CONFIG_DM_THIN_PROVISIONING=m # CONFIG_DM_CACHE is not set CONFIG_DM_WRITECACHE=m # CONFIG_DM_EBS is not set # CONFIG_DM_ERA is not set CONFIG_DM_CLONE=m CONFIG_DM_MIRROR=m CONFIG_DM_LOG_USERSPACE=m CONFIG_DM_RAID=m CONFIG_DM_ZERO=m CONFIG_DM_MULTIPATH=m CONFIG_DM_MULTIPATH_QL=m CONFIG_DM_MULTIPATH_ST=m CONFIG_DM_MULTIPATH_HST=m CONFIG_DM_MULTIPATH_IOA=m CONFIG_DM_DELAY=m # CONFIG_DM_DUST is not set CONFIG_DM_INIT=y CONFIG_DM_UEVENT=y CONFIG_DM_FLAKEY=m CONFIG_DM_VERITY=m CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG=y # CONFIG_DM_VERITY_FEC is not set CONFIG_DM_SWITCH=m # CONFIG_DM_LOG_WRITES is not set CONFIG_DM_INTEGRITY=m CONFIG_DM_AUDIT=y # CONFIG_TARGET_CORE is not set # CONFIG_FUSION is not set # # IEEE 1394 (FireWire) support # # CONFIG_FIREWIRE is not set # CONFIG_FIREWIRE_NOSY is not set # end of IEEE 1394 (FireWire) support CONFIG_NETDEVICES=y CONFIG_NET_CORE=y CONFIG_BONDING=m CONFIG_DUMMY=m # CONFIG_WIREGUARD is not set CONFIG_EQUALIZER=m # CONFIG_NET_FC is not set CONFIG_IFB=m # CONFIG_NET_TEAM is not set CONFIG_MACVLAN=m CONFIG_MACVTAP=m # CONFIG_IPVLAN is not set CONFIG_VXLAN=m # CONFIG_GENEVE is not set CONFIG_BAREUDP=m # CONFIG_GTP is not set CONFIG_AMT=m # CONFIG_MACSEC is not set # CONFIG_NETCONSOLE is not set CONFIG_TUN=m CONFIG_TAP=m # CONFIG_TUN_VNET_CROSS_LE is not set CONFIG_VETH=m CONFIG_VIRTIO_NET=m CONFIG_NLMON=m # CONFIG_VSOCKMON is not set # CONFIG_ARCNET is not set CONFIG_ETHERNET=y # CONFIG_NET_VENDOR_3COM is not set # CONFIG_NET_VENDOR_ADAPTEC is not set # CONFIG_NET_VENDOR_AGERE is not set # CONFIG_NET_VENDOR_ALACRITECH is not set # CONFIG_NET_VENDOR_ALTEON is not set # CONFIG_ALTERA_TSE is not set # CONFIG_NET_VENDOR_AMAZON is not set # CONFIG_NET_VENDOR_AMD is not set # CONFIG_NET_VENDOR_AQUANTIA is not set # CONFIG_NET_VENDOR_ARC is not set # CONFIG_NET_VENDOR_ASIX is not set # CONFIG_NET_VENDOR_ATHEROS is not set # CONFIG_NET_VENDOR_BROADCOM is not set # CONFIG_NET_VENDOR_CADENCE is not set # CONFIG_NET_VENDOR_CAVIUM is not set # CONFIG_NET_VENDOR_CHELSIO is not set # CONFIG_NET_VENDOR_CISCO is not set # CONFIG_NET_VENDOR_CORTINA is not set # CONFIG_NET_VENDOR_DAVICOM is not set # CONFIG_DNET is not set # CONFIG_NET_VENDOR_DEC is not set # CONFIG_NET_VENDOR_DLINK is not set # CONFIG_NET_VENDOR_EMULEX is not set # CONFIG_NET_VENDOR_ENGLEDER is not set # CONFIG_NET_VENDOR_EZCHIP is not set # CONFIG_NET_VENDOR_FUNGIBLE is not set # CONFIG_NET_VENDOR_GOOGLE is not set # CONFIG_NET_VENDOR_HUAWEI is not set # CONFIG_NET_VENDOR_INTEL is not set # CONFIG_JME is not set # CONFIG_NET_VENDOR_LITEX is not set # CONFIG_NET_VENDOR_MARVELL is not set CONFIG_NET_VENDOR_MELLANOX=y CONFIG_MLX4_EN=m CONFIG_MLX4_CORE=m CONFIG_MLX4_DEBUG=y CONFIG_MLX4_CORE_GEN2=y CONFIG_MLX5_CORE=m # CONFIG_MLX5_FPGA is not set CONFIG_MLX5_CORE_EN=y CONFIG_MLX5_EN_ARFS=y CONFIG_MLX5_EN_RXNFC=y CONFIG_MLX5_MPFS=y CONFIG_MLX5_ESWITCH=y CONFIG_MLX5_BRIDGE=y CONFIG_MLX5_CLS_ACT=y CONFIG_MLX5_TC_SAMPLE=y # CONFIG_MLX5_CORE_IPOIB is not set CONFIG_MLX5_SW_STEERING=y # CONFIG_MLX5_SF is not set # CONFIG_MLXSW_CORE is not set # CONFIG_MLXFW is not set # CONFIG_NET_VENDOR_MICREL is not set # CONFIG_NET_VENDOR_MICROCHIP is not set # CONFIG_NET_VENDOR_MICROSEMI is not set # CONFIG_NET_VENDOR_MICROSOFT is not set # CONFIG_NET_VENDOR_MYRI is not set # CONFIG_FEALNX is not set # CONFIG_NET_VENDOR_NI is not set # CONFIG_NET_VENDOR_NATSEMI is not set # CONFIG_NET_VENDOR_NETERION is not set # CONFIG_NET_VENDOR_NETRONOME is not set # CONFIG_NET_VENDOR_NVIDIA is not set # CONFIG_NET_VENDOR_OKI is not set # CONFIG_ETHOC is not set # CONFIG_NET_VENDOR_PACKET_ENGINES is not set # CONFIG_NET_VENDOR_PENSANDO is not set # CONFIG_NET_VENDOR_QLOGIC is not set # CONFIG_NET_VENDOR_BROCADE is not set # CONFIG_NET_VENDOR_QUALCOMM is not set # CONFIG_NET_VENDOR_RDC is not set # CONFIG_NET_VENDOR_REALTEK is not set # CONFIG_NET_VENDOR_RENESAS is not set # CONFIG_NET_VENDOR_ROCKER is not set # CONFIG_NET_VENDOR_SAMSUNG is not set # CONFIG_NET_VENDOR_SEEQ is not set # CONFIG_NET_VENDOR_SILAN is not set # CONFIG_NET_VENDOR_SIS is not set # CONFIG_NET_VENDOR_SOLARFLARE is not set # CONFIG_NET_VENDOR_SMSC is not set # CONFIG_NET_VENDOR_SOCIONEXT is not set # CONFIG_NET_VENDOR_STMICRO is not set # CONFIG_NET_VENDOR_SUN is not set # CONFIG_NET_VENDOR_SYNOPSYS is not set # CONFIG_NET_VENDOR_TEHUTI is not set # CONFIG_NET_VENDOR_TI is not set # CONFIG_NET_VENDOR_VERTEXCOM is not set # CONFIG_NET_VENDOR_VIA is not set # CONFIG_NET_VENDOR_WIZNET is not set # CONFIG_NET_VENDOR_XILINX is not set # CONFIG_FDDI is not set # CONFIG_HIPPI is not set # CONFIG_PHYLIB is not set # CONFIG_MDIO_DEVICE is not set # # PCS device drivers # # end of PCS device drivers CONFIG_PPP=m CONFIG_PPP_BSDCOMP=m CONFIG_PPP_DEFLATE=m CONFIG_PPP_FILTER=y CONFIG_PPP_MPPE=m CONFIG_PPP_MULTILINK=y CONFIG_PPPOE=m CONFIG_PPTP=m CONFIG_PPPOL2TP=m CONFIG_PPP_ASYNC=m CONFIG_PPP_SYNC_TTY=m # CONFIG_SLIP is not set CONFIG_SLHC=m # # S/390 network device drivers # CONFIG_LCS=m CONFIG_CTCM=m CONFIG_NETIUCV=m CONFIG_SMSGIUCV=m CONFIG_SMSGIUCV_EVENT=m CONFIG_QETH=y CONFIG_QETH_L2=y CONFIG_QETH_L3=y CONFIG_QETH_OSX=y CONFIG_CCWGROUP=y CONFIG_ISM=m # end of S/390 network device drivers # # Host-side USB support is needed for USB Network Adapter support # # CONFIG_WAN is not set # # Wireless WAN # # CONFIG_WWAN is not set # end of Wireless WAN # CONFIG_VMXNET3 is not set # CONFIG_NETDEVSIM is not set CONFIG_NET_FAILOVER=m # # Input device support # CONFIG_INPUT=y # CONFIG_INPUT_FF_MEMLESS is not set # CONFIG_INPUT_SPARSEKMAP is not set # CONFIG_INPUT_MATRIXKMAP is not set # # Userland interfaces # # CONFIG_INPUT_MOUSEDEV is not set # CONFIG_INPUT_JOYDEV is not set CONFIG_INPUT_EVDEV=y # CONFIG_INPUT_EVBUG is not set # # Input Device Drivers # # CONFIG_INPUT_KEYBOARD is not set # CONFIG_INPUT_MOUSE is not set # CONFIG_INPUT_JOYSTICK is not set # CONFIG_INPUT_TABLET is not set # CONFIG_INPUT_TOUCHSCREEN is not set # CONFIG_INPUT_MISC is not set # CONFIG_RMI4_CORE is not set # # Hardware I/O ports # # CONFIG_SERIO is not set # CONFIG_GAMEPORT is not set # end of Hardware I/O ports # end of Input device support # # Character devices # CONFIG_TTY=y CONFIG_VT=y CONFIG_CONSOLE_TRANSLATIONS=y CONFIG_VT_CONSOLE=y CONFIG_HW_CONSOLE=y CONFIG_VT_HW_CONSOLE_BINDING=y CONFIG_UNIX98_PTYS=y CONFIG_LEGACY_PTYS=y CONFIG_LEGACY_PTY_COUNT=0 CONFIG_LDISC_AUTOLOAD=y # # Serial drivers # # # Non-8250 serial port support # # CONFIG_SERIAL_UARTLITE is not set # CONFIG_SERIAL_JSM is not set # CONFIG_SERIAL_SCCNXP is not set # CONFIG_SERIAL_ALTERA_JTAGUART is not set # CONFIG_SERIAL_ALTERA_UART is not set # CONFIG_SERIAL_ARC is not set # CONFIG_SERIAL_RP2 is not set # CONFIG_SERIAL_FSL_LPUART is not set # CONFIG_SERIAL_FSL_LINFLEXUART is not set # end of Serial drivers # CONFIG_SERIAL_NONSTANDARD is not set # CONFIG_N_GSM is not set # CONFIG_NOZOMI is not set # CONFIG_NULL_TTY is not set CONFIG_HVC_DRIVER=y CONFIG_HVC_IUCV=y # CONFIG_SERIAL_DEV_BUS is not set # CONFIG_TTY_PRINTK is not set CONFIG_VIRTIO_CONSOLE=m # CONFIG_IPMI_HANDLER is not set CONFIG_HW_RANDOM=m # CONFIG_HW_RANDOM_TIMERIOMEM is not set # CONFIG_HW_RANDOM_BA431 is not set CONFIG_HW_RANDOM_VIRTIO=m CONFIG_HW_RANDOM_S390=m # CONFIG_HW_RANDOM_XIPHERA is not set # CONFIG_APPLICOM is not set CONFIG_DEVMEM=y CONFIG_DEVPORT=y CONFIG_HANGCHECK_TIMER=m CONFIG_TCG_TPM=y # CONFIG_TCG_VTPM_PROXY is not set # # S/390 character device drivers # CONFIG_TN3270=y CONFIG_TN3270_TTY=y CONFIG_TN3270_FS=y CONFIG_TN3270_CONSOLE=y CONFIG_TN3215=y CONFIG_TN3215_CONSOLE=y CONFIG_CCW_CONSOLE=y CONFIG_SCLP_TTY=y CONFIG_SCLP_CONSOLE=y CONFIG_SCLP_VT220_TTY=y CONFIG_SCLP_VT220_CONSOLE=y CONFIG_HMC_DRV=m # CONFIG_SCLP_OFB is not set CONFIG_S390_UV_UAPI=m CONFIG_S390_TAPE=m # # S/390 tape hardware support # CONFIG_S390_TAPE_34XX=m CONFIG_S390_TAPE_3590=m CONFIG_VMLOGRDR=m CONFIG_VMCP=y CONFIG_VMCP_CMA_SIZE=4 CONFIG_MONREADER=m CONFIG_MONWRITER=m CONFIG_S390_VMUR=m # CONFIG_XILLYBUS is not set CONFIG_RANDOM_TRUST_CPU=y CONFIG_RANDOM_TRUST_BOOTLOADER=y # end of Character devices # # I2C support # # CONFIG_I2C is not set # end of I2C support # CONFIG_I3C is not set # CONFIG_SPI is not set # CONFIG_SPMI is not set # CONFIG_HSI is not set # CONFIG_PPS is not set # # PTP clock support # # CONFIG_PTP_1588_CLOCK is not set CONFIG_PTP_1588_CLOCK_OPTIONAL=y # # Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks. # # end of PTP clock support # CONFIG_PINCTRL is not set # CONFIG_GPIOLIB is not set # CONFIG_W1 is not set # CONFIG_POWER_RESET is not set # CONFIG_POWER_SUPPLY is not set # CONFIG_HWMON is not set # CONFIG_THERMAL is not set CONFIG_WATCHDOG=y CONFIG_WATCHDOG_CORE=y CONFIG_WATCHDOG_NOWAYOUT=y CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED=y CONFIG_WATCHDOG_OPEN_TIMEOUT=0 # CONFIG_WATCHDOG_SYSFS is not set # CONFIG_WATCHDOG_HRTIMER_PRETIMEOUT is not set # # Watchdog Pretimeout Governors # # CONFIG_WATCHDOG_PRETIMEOUT_GOV is not set # # Watchdog Device Drivers # CONFIG_SOFT_WATCHDOG=m # CONFIG_XILINX_WATCHDOG is not set # CONFIG_CADENCE_WATCHDOG is not set # CONFIG_DW_WATCHDOG is not set # CONFIG_MAX63XX_WATCHDOG is not set # CONFIG_ALIM7101_WDT is not set # CONFIG_I6300ESB_WDT is not set CONFIG_DIAG288_WATCHDOG=m # # PCI-based Watchdog Cards # # CONFIG_PCIPCWATCHDOG is not set # CONFIG_WDTPCI is not set CONFIG_SSB_POSSIBLE=y # CONFIG_SSB is not set CONFIG_BCMA_POSSIBLE=y # CONFIG_BCMA is not set # # Multifunction device drivers # # CONFIG_MFD_MADERA is not set # CONFIG_HTC_PASIC3 is not set # CONFIG_LPC_ICH is not set # CONFIG_LPC_SCH is not set # CONFIG_MFD_JANZ_CMODIO is not set # CONFIG_MFD_KEMPLD is not set # CONFIG_MFD_MT6397 is not set # CONFIG_MFD_RDC321X is not set # CONFIG_MFD_SM501 is not set # CONFIG_MFD_SYSCON is not set # CONFIG_MFD_TI_AM335X_TSCADC is not set # CONFIG_MFD_TQMX86 is not set # CONFIG_MFD_VX855 is not set # end of Multifunction device drivers # CONFIG_REGULATOR is not set # CONFIG_RC_CORE is not set # # CEC support # # CONFIG_MEDIA_CEC_SUPPORT is not set # end of CEC support # CONFIG_MEDIA_SUPPORT is not set # # Graphics support # # CONFIG_DRM is not set # CONFIG_DRM_DEBUG_MODESET_LOCK is not set # # ARM devices # # end of ARM devices # # Frame buffer Devices # CONFIG_FB_CMDLINE=y CONFIG_FB_NOTIFY=y CONFIG_FB=y # CONFIG_FIRMWARE_EDID is not set # CONFIG_FB_FOREIGN_ENDIAN is not set # CONFIG_FB_MODE_HELPERS is not set # CONFIG_FB_TILEBLITTING is not set # # Frame buffer hardware drivers # # CONFIG_FB_CIRRUS is not set # CONFIG_FB_PM2 is not set # CONFIG_FB_CYBER2000 is not set # CONFIG_FB_ASILIANT is not set # CONFIG_FB_IMSTT is not set # CONFIG_FB_UVESA is not set # CONFIG_FB_OPENCORES is not set # CONFIG_FB_S1D13XXX is not set # CONFIG_FB_NVIDIA is not set # CONFIG_FB_RIVA is not set # CONFIG_FB_I740 is not set # CONFIG_FB_MATROX is not set # CONFIG_FB_RADEON is not set # CONFIG_FB_ATY128 is not set # CONFIG_FB_ATY is not set # CONFIG_FB_S3 is not set # CONFIG_FB_SAVAGE is not set # CONFIG_FB_SIS is not set # CONFIG_FB_NEOMAGIC is not set # CONFIG_FB_KYRO is not set # CONFIG_FB_3DFX is not set # CONFIG_FB_VOODOO1 is not set # CONFIG_FB_VT8623 is not set # CONFIG_FB_TRIDENT is not set # CONFIG_FB_ARK is not set # CONFIG_FB_PM3 is not set # CONFIG_FB_CARMINE is not set # CONFIG_FB_IBM_GXT4500 is not set # CONFIG_FB_VIRTUAL is not set # CONFIG_FB_METRONOME is not set # CONFIG_FB_MB862XX is not set # CONFIG_FB_SIMPLE is not set # CONFIG_FB_SM712 is not set # end of Frame buffer Devices # # Backlight & LCD device support # # CONFIG_LCD_CLASS_DEVICE is not set # CONFIG_BACKLIGHT_CLASS_DEVICE is not set # end of Backlight & LCD device support # # Console display driver support # CONFIG_DUMMY_CONSOLE=y CONFIG_DUMMY_CONSOLE_COLUMNS=80 CONFIG_DUMMY_CONSOLE_ROWS=25 CONFIG_FRAMEBUFFER_CONSOLE=y # CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION is not set CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y # CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set # CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER is not set # end of Console display driver support # CONFIG_LOGO is not set # end of Graphics support # CONFIG_SOUND is not set # # HID support # # CONFIG_HID is not set # end of HID support CONFIG_USB_OHCI_LITTLE_ENDIAN=y # CONFIG_USB_SUPPORT is not set # CONFIG_MMC is not set # CONFIG_SCSI_UFSHCD is not set # CONFIG_MEMSTICK is not set # CONFIG_NEW_LEDS is not set # CONFIG_ACCESSIBILITY is not set CONFIG_INFINIBAND=m # CONFIG_INFINIBAND_USER_MAD is not set CONFIG_INFINIBAND_USER_ACCESS=m CONFIG_INFINIBAND_USER_MEM=y CONFIG_INFINIBAND_ON_DEMAND_PAGING=y CONFIG_INFINIBAND_ADDR_TRANS=y CONFIG_INFINIBAND_ADDR_TRANS_CONFIGFS=y CONFIG_INFINIBAND_VIRT_DMA=y # CONFIG_INFINIBAND_MTHCA is not set CONFIG_MLX4_INFINIBAND=m CONFIG_MLX5_INFINIBAND=m # CONFIG_INFINIBAND_OCRDMA is not set # CONFIG_RDMA_RXE is not set # CONFIG_RDMA_SIW is not set # CONFIG_INFINIBAND_IPOIB is not set # CONFIG_INFINIBAND_SRP is not set # CONFIG_INFINIBAND_ISER is not set # CONFIG_INFINIBAND_RTRS_CLIENT is not set # CONFIG_INFINIBAND_RTRS_SERVER is not set # CONFIG_DMADEVICES is not set # # DMABUF options # CONFIG_SYNC_FILE=y # CONFIG_SW_SYNC is not set # CONFIG_UDMABUF is not set # CONFIG_DMABUF_MOVE_NOTIFY is not set # CONFIG_DMABUF_DEBUG is not set # CONFIG_DMABUF_SELFTESTS is not set # CONFIG_DMABUF_HEAPS is not set # CONFIG_DMABUF_SYSFS_STATS is not set # end of DMABUF options # CONFIG_AUXDISPLAY is not set # CONFIG_UIO is not set CONFIG_VFIO=m CONFIG_VFIO_IOMMU_TYPE1=m CONFIG_VFIO_VIRQFD=m # CONFIG_VFIO_NOIOMMU is not set CONFIG_VFIO_PCI_CORE=m CONFIG_VFIO_PCI=m CONFIG_MLX5_VFIO_PCI=m CONFIG_VFIO_MDEV=m CONFIG_IRQ_BYPASS_MANAGER=m # CONFIG_VIRT_DRIVERS is not set CONFIG_VIRTIO=y CONFIG_VIRTIO_PCI_LIB=m CONFIG_VIRTIO_PCI_LIB_LEGACY=m CONFIG_VIRTIO_MENU=y CONFIG_VIRTIO_PCI=m CONFIG_VIRTIO_PCI_LEGACY=y CONFIG_VIRTIO_BALLOON=m CONFIG_VIRTIO_INPUT=y # CONFIG_VIRTIO_MMIO is not set # CONFIG_VDPA is not set CONFIG_VHOST_IOTLB=m CONFIG_VHOST=m CONFIG_VHOST_MENU=y CONFIG_VHOST_NET=m CONFIG_VHOST_VSOCK=m # CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set # # Microsoft Hyper-V guest support # # end of Microsoft Hyper-V guest support # CONFIG_GREYBUS is not set # CONFIG_COMEDI is not set # CONFIG_STAGING is not set # CONFIG_GOLDFISH is not set # CONFIG_COMMON_CLK is not set # CONFIG_HWSPINLOCK is not set # # Clock Source drivers # # end of Clock Source drivers # CONFIG_MAILBOX is not set CONFIG_IOMMU_API=y CONFIG_IOMMU_SUPPORT=y # # Generic IOMMU Pagetable Support # # end of Generic IOMMU Pagetable Support # CONFIG_IOMMU_DEBUGFS is not set CONFIG_IOMMU_DEFAULT_DMA_STRICT=y # CONFIG_IOMMU_DEFAULT_DMA_LAZY is not set # CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set CONFIG_S390_IOMMU=y CONFIG_S390_CCW_IOMMU=y CONFIG_S390_AP_IOMMU=y # # Remoteproc drivers # # CONFIG_REMOTEPROC is not set # end of Remoteproc drivers # # Rpmsg drivers # # CONFIG_RPMSG_VIRTIO is not set # end of Rpmsg drivers # # SOC (System On Chip) specific Drivers # # # Amlogic SoC drivers # # end of Amlogic SoC drivers # # Broadcom SoC drivers # # end of Broadcom SoC drivers # # NXP/Freescale QorIQ SoC drivers # # end of NXP/Freescale QorIQ SoC drivers # # i.MX SoC drivers # # end of i.MX SoC drivers # # Enable LiteX SoC Builder specific drivers # # end of Enable LiteX SoC Builder specific drivers # # Qualcomm SoC drivers # # end of Qualcomm SoC drivers # CONFIG_SOC_TI is not set # # Xilinx SoC drivers # # end of Xilinx SoC drivers # end of SOC (System On Chip) specific Drivers # CONFIG_PM_DEVFREQ is not set # CONFIG_EXTCON is not set # CONFIG_MEMORY is not set # CONFIG_IIO is not set # CONFIG_NTB is not set # CONFIG_VME_BUS is not set # CONFIG_PWM is not set # # IRQ chip support # # end of IRQ chip support # CONFIG_IPACK_BUS is not set # CONFIG_RESET_CONTROLLER is not set # # PHY Subsystem # # CONFIG_GENERIC_PHY is not set # CONFIG_PHY_CAN_TRANSCEIVER is not set # # PHY drivers for Broadcom platforms # # CONFIG_BCM_KONA_USB2_PHY is not set # end of PHY drivers for Broadcom platforms # CONFIG_PHY_PXA_28NM_HSIC is not set # CONFIG_PHY_PXA_28NM_USB2 is not set # end of PHY Subsystem # CONFIG_POWERCAP is not set # CONFIG_MCB is not set # # Performance monitor support # # end of Performance monitor support # CONFIG_RAS is not set # CONFIG_USB4 is not set # # Android # # CONFIG_ANDROID is not set # end of Android # CONFIG_LIBNVDIMM is not set CONFIG_DAX=y # CONFIG_DEV_DAX is not set # CONFIG_NVMEM is not set # # HW tracing support # # CONFIG_STM is not set # CONFIG_INTEL_TH is not set # end of HW tracing support # CONFIG_FPGA is not set # CONFIG_SIOX is not set # CONFIG_SLIMBUS is not set # CONFIG_INTERCONNECT is not set # CONFIG_COUNTER is not set # CONFIG_MOST is not set # CONFIG_PECI is not set # CONFIG_HTE is not set # end of Device Drivers # # File systems # # CONFIG_VALIDATE_FS_PARSER is not set CONFIG_FS_IOMAP=y # CONFIG_EXT2_FS is not set # CONFIG_EXT3_FS is not set CONFIG_EXT4_FS=y CONFIG_EXT4_USE_FOR_EXT2=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y # CONFIG_EXT4_DEBUG is not set # CONFIG_EXT4_KUNIT_TESTS is not set CONFIG_JBD2=y CONFIG_JBD2_DEBUG=y CONFIG_FS_MBCACHE=y # CONFIG_REISERFS_FS is not set CONFIG_JFS_FS=m CONFIG_JFS_POSIX_ACL=y CONFIG_JFS_SECURITY=y # CONFIG_JFS_DEBUG is not set CONFIG_JFS_STATISTICS=y CONFIG_XFS_FS=y CONFIG_XFS_SUPPORT_V4=y CONFIG_XFS_QUOTA=y CONFIG_XFS_POSIX_ACL=y CONFIG_XFS_RT=y # CONFIG_XFS_ONLINE_SCRUB is not set # CONFIG_XFS_WARN is not set # CONFIG_XFS_DEBUG is not set CONFIG_GFS2_FS=m CONFIG_GFS2_FS_LOCKING_DLM=y CONFIG_OCFS2_FS=m CONFIG_OCFS2_FS_O2CB=m CONFIG_OCFS2_FS_USERSPACE_CLUSTER=m CONFIG_OCFS2_FS_STATS=y CONFIG_OCFS2_DEBUG_MASKLOG=y # CONFIG_OCFS2_DEBUG_FS is not set CONFIG_BTRFS_FS=y CONFIG_BTRFS_FS_POSIX_ACL=y # CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set # CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set # CONFIG_BTRFS_DEBUG is not set # CONFIG_BTRFS_ASSERT is not set # CONFIG_BTRFS_FS_REF_VERIFY is not set CONFIG_NILFS2_FS=m # CONFIG_F2FS_FS is not set CONFIG_FS_DAX=y CONFIG_FS_DAX_LIMITED=y CONFIG_FS_POSIX_ACL=y CONFIG_EXPORTFS=y CONFIG_EXPORTFS_BLOCK_OPS=y CONFIG_FILE_LOCKING=y CONFIG_FS_ENCRYPTION=y CONFIG_FS_ENCRYPTION_ALGS=y # CONFIG_FS_ENCRYPTION_INLINE_CRYPT is not set CONFIG_FS_VERITY=y # CONFIG_FS_VERITY_DEBUG is not set CONFIG_FS_VERITY_BUILTIN_SIGNATURES=y CONFIG_FSNOTIFY=y CONFIG_DNOTIFY=y CONFIG_INOTIFY_USER=y CONFIG_FANOTIFY=y CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y CONFIG_QUOTA=y CONFIG_QUOTA_NETLINK_INTERFACE=y CONFIG_PRINT_QUOTA_WARNING=y # CONFIG_QUOTA_DEBUG is not set CONFIG_QUOTA_TREE=m CONFIG_QFMT_V1=m CONFIG_QFMT_V2=m CONFIG_QUOTACTL=y CONFIG_AUTOFS4_FS=m CONFIG_AUTOFS_FS=m CONFIG_FUSE_FS=y CONFIG_CUSE=m CONFIG_VIRTIO_FS=m CONFIG_FUSE_DAX=y CONFIG_OVERLAY_FS=m # CONFIG_OVERLAY_FS_REDIRECT_DIR is not set CONFIG_OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW=y # CONFIG_OVERLAY_FS_INDEX is not set # CONFIG_OVERLAY_FS_XINO_AUTO is not set # CONFIG_OVERLAY_FS_METACOPY is not set # # Caches # CONFIG_NETFS_SUPPORT=m CONFIG_NETFS_STATS=y CONFIG_FSCACHE=m # CONFIG_FSCACHE_STATS is not set # CONFIG_FSCACHE_DEBUG is not set CONFIG_CACHEFILES=m # CONFIG_CACHEFILES_DEBUG is not set # CONFIG_CACHEFILES_ERROR_INJECTION is not set # CONFIG_CACHEFILES_ONDEMAND is not set # end of Caches # # CD-ROM/DVD Filesystems # CONFIG_ISO9660_FS=y CONFIG_JOLIET=y CONFIG_ZISOFS=y CONFIG_UDF_FS=m # end of CD-ROM/DVD Filesystems # # DOS/FAT/EXFAT/NT Filesystems # CONFIG_FAT_FS=m CONFIG_MSDOS_FS=m CONFIG_VFAT_FS=m CONFIG_FAT_DEFAULT_CODEPAGE=437 CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1" # CONFIG_FAT_DEFAULT_UTF8 is not set # CONFIG_FAT_KUNIT_TEST is not set CONFIG_EXFAT_FS=m CONFIG_EXFAT_DEFAULT_IOCHARSET="utf8" CONFIG_NTFS_FS=m # CONFIG_NTFS_DEBUG is not set CONFIG_NTFS_RW=y # CONFIG_NTFS3_FS is not set # end of DOS/FAT/EXFAT/NT Filesystems # # Pseudo filesystems # CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_PROC_VMCORE=y # CONFIG_PROC_VMCORE_DEVICE_DUMP is not set CONFIG_PROC_SYSCTL=y CONFIG_PROC_PAGE_MONITOR=y CONFIG_PROC_CHILDREN=y CONFIG_KERNFS=y CONFIG_SYSFS=y CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y CONFIG_TMPFS_XATTR=y CONFIG_TMPFS_INODE64=y CONFIG_ARCH_SUPPORTS_HUGETLBFS=y CONFIG_HUGETLBFS=y CONFIG_HUGETLB_PAGE=y CONFIG_MEMFD_CREATE=y CONFIG_ARCH_HAS_GIGANTIC_PAGE=y CONFIG_CONFIGFS_FS=m # end of Pseudo filesystems CONFIG_MISC_FILESYSTEMS=y # CONFIG_ORANGEFS_FS is not set # CONFIG_ADFS_FS is not set # CONFIG_AFFS_FS is not set CONFIG_ECRYPT_FS=m # CONFIG_ECRYPT_FS_MESSAGING is not set # CONFIG_HFS_FS is not set # CONFIG_HFSPLUS_FS is not set # CONFIG_BEFS_FS is not set # CONFIG_BFS_FS is not set # CONFIG_EFS_FS is not set CONFIG_CRAMFS=m CONFIG_CRAMFS_BLOCKDEV=y CONFIG_SQUASHFS=m CONFIG_SQUASHFS_FILE_CACHE=y # CONFIG_SQUASHFS_FILE_DIRECT is not set CONFIG_SQUASHFS_DECOMP_SINGLE=y # CONFIG_SQUASHFS_DECOMP_MULTI is not set # CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU is not set CONFIG_SQUASHFS_XATTR=y CONFIG_SQUASHFS_ZLIB=y CONFIG_SQUASHFS_LZ4=y CONFIG_SQUASHFS_LZO=y CONFIG_SQUASHFS_XZ=y CONFIG_SQUASHFS_ZSTD=y # CONFIG_SQUASHFS_4K_DEVBLK_SIZE is not set # CONFIG_SQUASHFS_EMBEDDED is not set CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3 # CONFIG_VXFS_FS is not set # CONFIG_MINIX_FS is not set # CONFIG_OMFS_FS is not set # CONFIG_HPFS_FS is not set # CONFIG_QNX4FS_FS is not set # CONFIG_QNX6FS_FS is not set CONFIG_ROMFS_FS=m CONFIG_ROMFS_BACKED_BY_BLOCK=y CONFIG_ROMFS_ON_BLOCK=y # CONFIG_PSTORE is not set # CONFIG_SYSV_FS is not set # CONFIG_UFS_FS is not set # CONFIG_EROFS_FS is not set CONFIG_NETWORK_FILESYSTEMS=y CONFIG_NFS_FS=m CONFIG_NFS_V2=m CONFIG_NFS_V3=m CONFIG_NFS_V3_ACL=y CONFIG_NFS_V4=m CONFIG_NFS_SWAP=y # CONFIG_NFS_V4_1 is not set # CONFIG_NFS_FSCACHE is not set # CONFIG_NFS_USE_LEGACY_DNS is not set CONFIG_NFS_USE_KERNEL_DNS=y CONFIG_NFS_DISABLE_UDP_SUPPORT=y CONFIG_NFSD=m CONFIG_NFSD_V2_ACL=y CONFIG_NFSD_V3_ACL=y CONFIG_NFSD_V4=y # CONFIG_NFSD_BLOCKLAYOUT is not set # CONFIG_NFSD_SCSILAYOUT is not set # CONFIG_NFSD_FLEXFILELAYOUT is not set CONFIG_NFSD_V4_SECURITY_LABEL=y CONFIG_GRACE_PERIOD=m CONFIG_LOCKD=m CONFIG_LOCKD_V4=y CONFIG_NFS_ACL_SUPPORT=m CONFIG_NFS_COMMON=y CONFIG_SUNRPC=m CONFIG_SUNRPC_GSS=m CONFIG_SUNRPC_SWAP=y CONFIG_RPCSEC_GSS_KRB5=m # CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES is not set # CONFIG_SUNRPC_DEBUG is not set CONFIG_SUNRPC_XPRT_RDMA=m # CONFIG_CEPH_FS is not set CONFIG_CIFS=m CONFIG_CIFS_STATS2=y CONFIG_CIFS_ALLOW_INSECURE_LEGACY=y CONFIG_CIFS_UPCALL=y CONFIG_CIFS_XATTR=y CONFIG_CIFS_POSIX=y # CONFIG_CIFS_DEBUG is not set CONFIG_CIFS_DFS_UPCALL=y CONFIG_CIFS_SWN_UPCALL=y # CONFIG_CIFS_SMB_DIRECT is not set # CONFIG_CIFS_FSCACHE is not set # CONFIG_SMB_SERVER is not set CONFIG_SMBFS_COMMON=m # CONFIG_CODA_FS is not set # CONFIG_AFS_FS is not set CONFIG_NLS=y CONFIG_NLS_DEFAULT="utf8" CONFIG_NLS_CODEPAGE_437=m # CONFIG_NLS_CODEPAGE_737 is not set # CONFIG_NLS_CODEPAGE_775 is not set CONFIG_NLS_CODEPAGE_850=m # CONFIG_NLS_CODEPAGE_852 is not set # CONFIG_NLS_CODEPAGE_855 is not set # CONFIG_NLS_CODEPAGE_857 is not set # CONFIG_NLS_CODEPAGE_860 is not set # CONFIG_NLS_CODEPAGE_861 is not set # CONFIG_NLS_CODEPAGE_862 is not set # CONFIG_NLS_CODEPAGE_863 is not set # CONFIG_NLS_CODEPAGE_864 is not set # CONFIG_NLS_CODEPAGE_865 is not set # CONFIG_NLS_CODEPAGE_866 is not set # CONFIG_NLS_CODEPAGE_869 is not set # CONFIG_NLS_CODEPAGE_936 is not set # CONFIG_NLS_CODEPAGE_950 is not set # CONFIG_NLS_CODEPAGE_932 is not set # CONFIG_NLS_CODEPAGE_949 is not set # CONFIG_NLS_CODEPAGE_874 is not set # CONFIG_NLS_ISO8859_8 is not set # CONFIG_NLS_CODEPAGE_1250 is not set # CONFIG_NLS_CODEPAGE_1251 is not set CONFIG_NLS_ASCII=m CONFIG_NLS_ISO8859_1=m # CONFIG_NLS_ISO8859_2 is not set # CONFIG_NLS_ISO8859_3 is not set # CONFIG_NLS_ISO8859_4 is not set # CONFIG_NLS_ISO8859_5 is not set # CONFIG_NLS_ISO8859_6 is not set # CONFIG_NLS_ISO8859_7 is not set # CONFIG_NLS_ISO8859_9 is not set # CONFIG_NLS_ISO8859_13 is not set # CONFIG_NLS_ISO8859_14 is not set CONFIG_NLS_ISO8859_15=m # CONFIG_NLS_KOI8_R is not set # CONFIG_NLS_KOI8_U is not set # CONFIG_NLS_MAC_ROMAN is not set # CONFIG_NLS_MAC_CELTIC is not set # CONFIG_NLS_MAC_CENTEURO is not set # CONFIG_NLS_MAC_CROATIAN is not set # CONFIG_NLS_MAC_CYRILLIC is not set # CONFIG_NLS_MAC_GAELIC is not set # CONFIG_NLS_MAC_GREEK is not set # CONFIG_NLS_MAC_ICELAND is not set # CONFIG_NLS_MAC_INUIT is not set # CONFIG_NLS_MAC_ROMANIAN is not set # CONFIG_NLS_MAC_TURKISH is not set CONFIG_NLS_UTF8=m CONFIG_DLM=m # CONFIG_DLM_DEBUG is not set CONFIG_UNICODE=y # CONFIG_UNICODE_NORMALIZATION_SELFTEST is not set CONFIG_IO_WQ=y # end of File systems # # Security options # CONFIG_KEYS=y # CONFIG_KEYS_REQUEST_CACHE is not set CONFIG_PERSISTENT_KEYRINGS=y # CONFIG_TRUSTED_KEYS is not set CONFIG_ENCRYPTED_KEYS=m # CONFIG_USER_DECRYPTED_DATA is not set # CONFIG_KEY_DH_OPERATIONS is not set CONFIG_KEY_NOTIFICATIONS=y # CONFIG_SECURITY_DMESG_RESTRICT is not set CONFIG_SECURITY=y CONFIG_SECURITY_WRITABLE_HOOKS=y CONFIG_SECURITYFS=y CONFIG_SECURITY_NETWORK=y # CONFIG_SECURITY_INFINIBAND is not set # CONFIG_SECURITY_NETWORK_XFRM is not set CONFIG_SECURITY_PATH=y CONFIG_LSM_MMAP_MIN_ADDR=65536 CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y # CONFIG_HARDENED_USERCOPY is not set # CONFIG_FORTIFY_SOURCE is not set # CONFIG_STATIC_USERMODEHELPER is not set CONFIG_SECURITY_SELINUX=y CONFIG_SECURITY_SELINUX_BOOTPARAM=y CONFIG_SECURITY_SELINUX_DISABLE=y CONFIG_SECURITY_SELINUX_DEVELOP=y CONFIG_SECURITY_SELINUX_AVC_STATS=y CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=0 CONFIG_SECURITY_SELINUX_SIDTAB_HASH_BITS=9 CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE=256 # CONFIG_SECURITY_SMACK is not set # CONFIG_SECURITY_TOMOYO is not set # CONFIG_SECURITY_APPARMOR is not set # CONFIG_SECURITY_LOADPIN is not set # CONFIG_SECURITY_YAMA is not set # CONFIG_SECURITY_SAFESETID is not set CONFIG_SECURITY_LOCKDOWN_LSM=y CONFIG_SECURITY_LOCKDOWN_LSM_EARLY=y CONFIG_LOCK_DOWN_KERNEL_FORCE_NONE=y # CONFIG_LOCK_DOWN_KERNEL_FORCE_INTEGRITY is not set # CONFIG_LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY is not set CONFIG_SECURITY_LANDLOCK=y CONFIG_INTEGRITY=y CONFIG_INTEGRITY_SIGNATURE=y CONFIG_INTEGRITY_ASYMMETRIC_KEYS=y CONFIG_INTEGRITY_TRUSTED_KEYRING=y CONFIG_INTEGRITY_AUDIT=y CONFIG_IMA=y CONFIG_IMA_MEASURE_PCR_IDX=10 CONFIG_IMA_LSM_RULES=y CONFIG_IMA_NG_TEMPLATE=y # CONFIG_IMA_SIG_TEMPLATE is not set CONFIG_IMA_DEFAULT_TEMPLATE="ima-ng" # CONFIG_IMA_DEFAULT_HASH_SHA1 is not set CONFIG_IMA_DEFAULT_HASH_SHA256=y # CONFIG_IMA_DEFAULT_HASH_SHA512 is not set CONFIG_IMA_DEFAULT_HASH="sha256" CONFIG_IMA_WRITE_POLICY=y CONFIG_IMA_READ_POLICY=y CONFIG_IMA_APPRAISE=y # CONFIG_IMA_ARCH_POLICY is not set # CONFIG_IMA_APPRAISE_BUILD_POLICY is not set CONFIG_IMA_APPRAISE_BOOTPARAM=y # CONFIG_IMA_APPRAISE_MODSIG is not set CONFIG_IMA_TRUSTED_KEYRING=y # CONFIG_IMA_BLACKLIST_KEYRING is not set # CONFIG_IMA_LOAD_X509 is not set CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS=y CONFIG_IMA_QUEUE_EARLY_BOOT_KEYS=y # CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT is not set # CONFIG_IMA_DISABLE_HTABLE is not set # CONFIG_EVM is not set CONFIG_DEFAULT_SECURITY_SELINUX=y # CONFIG_DEFAULT_SECURITY_DAC is not set CONFIG_LSM="yama,loadpin,safesetid,integrity,selinux,smack,tomoyo,apparmor" # # Kernel hardening options # # # Memory initialization # CONFIG_CC_HAS_AUTO_VAR_INIT_PATTERN=y CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO=y # CONFIG_INIT_STACK_NONE is not set # CONFIG_INIT_STACK_ALL_PATTERN is not set CONFIG_INIT_STACK_ALL_ZERO=y # CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set # CONFIG_INIT_ON_FREE_DEFAULT_ON is not set CONFIG_CC_HAS_ZERO_CALL_USED_REGS=y # CONFIG_ZERO_CALL_USED_REGS is not set # end of Memory initialization CONFIG_RANDSTRUCT_NONE=y # end of Kernel hardening options # end of Security options CONFIG_XOR_BLOCKS=y CONFIG_ASYNC_CORE=m CONFIG_ASYNC_MEMCPY=m CONFIG_ASYNC_XOR=m CONFIG_ASYNC_PQ=m CONFIG_ASYNC_RAID6_RECOV=m CONFIG_CRYPTO=y # # Crypto core or helper # CONFIG_CRYPTO_FIPS=y CONFIG_CRYPTO_ALGAPI=y CONFIG_CRYPTO_ALGAPI2=y CONFIG_CRYPTO_AEAD=y CONFIG_CRYPTO_AEAD2=y CONFIG_CRYPTO_SKCIPHER=y CONFIG_CRYPTO_SKCIPHER2=y CONFIG_CRYPTO_HASH=y CONFIG_CRYPTO_HASH2=y CONFIG_CRYPTO_RNG=y CONFIG_CRYPTO_RNG2=y CONFIG_CRYPTO_RNG_DEFAULT=y CONFIG_CRYPTO_AKCIPHER2=y CONFIG_CRYPTO_AKCIPHER=y CONFIG_CRYPTO_KPP2=y CONFIG_CRYPTO_KPP=m CONFIG_CRYPTO_ACOMP2=y CONFIG_CRYPTO_MANAGER=y CONFIG_CRYPTO_MANAGER2=y CONFIG_CRYPTO_USER=m # CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set # CONFIG_CRYPTO_MANAGER_EXTRA_TESTS is not set CONFIG_CRYPTO_GF128MUL=y CONFIG_CRYPTO_NULL=y CONFIG_CRYPTO_NULL2=y CONFIG_CRYPTO_PCRYPT=m CONFIG_CRYPTO_CRYPTD=m CONFIG_CRYPTO_AUTHENC=m CONFIG_CRYPTO_TEST=m CONFIG_CRYPTO_ENGINE=m # # Public-key cryptography # CONFIG_CRYPTO_RSA=y CONFIG_CRYPTO_DH=m # CONFIG_CRYPTO_DH_RFC7919_GROUPS is not set CONFIG_CRYPTO_ECC=m CONFIG_CRYPTO_ECDH=m CONFIG_CRYPTO_ECDSA=m CONFIG_CRYPTO_ECRDSA=m CONFIG_CRYPTO_SM2=m CONFIG_CRYPTO_CURVE25519=m # # Authenticated Encryption with Associated Data # CONFIG_CRYPTO_CCM=m CONFIG_CRYPTO_GCM=y CONFIG_CRYPTO_CHACHA20POLY1305=m CONFIG_CRYPTO_AEGIS128=m CONFIG_CRYPTO_SEQIV=y CONFIG_CRYPTO_ECHAINIV=m # # Block modes # CONFIG_CRYPTO_CBC=y CONFIG_CRYPTO_CFB=m CONFIG_CRYPTO_CTR=y CONFIG_CRYPTO_CTS=y CONFIG_CRYPTO_ECB=y CONFIG_CRYPTO_LRW=m CONFIG_CRYPTO_OFB=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_XTS=y CONFIG_CRYPTO_KEYWRAP=m CONFIG_CRYPTO_NHPOLY1305=m CONFIG_CRYPTO_ADIANTUM=m CONFIG_CRYPTO_ESSIV=m # # Hash modes # CONFIG_CRYPTO_CMAC=m CONFIG_CRYPTO_HMAC=y CONFIG_CRYPTO_XCBC=m CONFIG_CRYPTO_VMAC=m # # Digest # CONFIG_CRYPTO_CRC32C=y CONFIG_CRYPTO_CRC32=m CONFIG_CRYPTO_XXHASH=y CONFIG_CRYPTO_BLAKE2B=y CONFIG_CRYPTO_BLAKE2S=m CONFIG_CRYPTO_CRCT10DIF=y CONFIG_CRYPTO_CRC64_ROCKSOFT=y CONFIG_CRYPTO_GHASH=y CONFIG_CRYPTO_POLY1305=m CONFIG_CRYPTO_MD4=m CONFIG_CRYPTO_MD5=y CONFIG_CRYPTO_MICHAEL_MIC=m CONFIG_CRYPTO_RMD160=m CONFIG_CRYPTO_SHA1=y CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_SHA512=y CONFIG_CRYPTO_SHA3=m CONFIG_CRYPTO_SM3=m # CONFIG_CRYPTO_SM3_GENERIC is not set CONFIG_CRYPTO_STREEBOG=m CONFIG_CRYPTO_WP512=m # # Ciphers # CONFIG_CRYPTO_AES=y CONFIG_CRYPTO_AES_TI=m CONFIG_CRYPTO_ANUBIS=m CONFIG_CRYPTO_ARC4=m CONFIG_CRYPTO_BLOWFISH=m CONFIG_CRYPTO_BLOWFISH_COMMON=m CONFIG_CRYPTO_CAMELLIA=m CONFIG_CRYPTO_CAST_COMMON=m CONFIG_CRYPTO_CAST5=m CONFIG_CRYPTO_CAST6=m CONFIG_CRYPTO_DES=m CONFIG_CRYPTO_FCRYPT=m CONFIG_CRYPTO_KHAZAD=m CONFIG_CRYPTO_CHACHA20=m CONFIG_CRYPTO_SEED=m CONFIG_CRYPTO_SERPENT=m # CONFIG_CRYPTO_SM4_GENERIC is not set CONFIG_CRYPTO_TEA=m CONFIG_CRYPTO_TWOFISH=m CONFIG_CRYPTO_TWOFISH_COMMON=m # # Compression # CONFIG_CRYPTO_DEFLATE=m CONFIG_CRYPTO_LZO=y CONFIG_CRYPTO_842=m CONFIG_CRYPTO_LZ4=m CONFIG_CRYPTO_LZ4HC=m CONFIG_CRYPTO_ZSTD=m # # Random Number Generation # CONFIG_CRYPTO_ANSI_CPRNG=m CONFIG_CRYPTO_DRBG_MENU=y CONFIG_CRYPTO_DRBG_HMAC=y # CONFIG_CRYPTO_DRBG_HASH is not set # CONFIG_CRYPTO_DRBG_CTR is not set CONFIG_CRYPTO_DRBG=y CONFIG_CRYPTO_JITTERENTROPY=y CONFIG_CRYPTO_USER_API=m CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m # CONFIG_CRYPTO_USER_API_RNG_CAVP is not set CONFIG_CRYPTO_USER_API_AEAD=m CONFIG_CRYPTO_USER_API_ENABLE_OBSOLETE=y CONFIG_CRYPTO_STATS=y CONFIG_CRYPTO_HASH_INFO=y CONFIG_CRYPTO_HW=y CONFIG_ZCRYPT=m # CONFIG_ZCRYPT_DEBUG is not set CONFIG_ZCRYPT_MULTIDEVNODES=y CONFIG_PKEY=m CONFIG_CRYPTO_PAES_S390=m CONFIG_CRYPTO_SHA1_S390=m CONFIG_CRYPTO_SHA256_S390=m CONFIG_CRYPTO_SHA512_S390=m CONFIG_CRYPTO_SHA3_256_S390=m CONFIG_CRYPTO_SHA3_512_S390=m CONFIG_CRYPTO_DES_S390=m CONFIG_CRYPTO_AES_S390=m CONFIG_CRYPTO_CHACHA_S390=m CONFIG_S390_PRNG=m CONFIG_CRYPTO_GHASH_S390=m CONFIG_CRYPTO_CRC32_S390=y # CONFIG_CRYPTO_DEV_NITROX_CNN55XX is not set CONFIG_CRYPTO_DEV_VIRTIO=m # CONFIG_CRYPTO_DEV_SAFEXCEL is not set # CONFIG_CRYPTO_DEV_AMLOGIC_GXL is not set CONFIG_ASYMMETRIC_KEY_TYPE=y CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y CONFIG_X509_CERTIFICATE_PARSER=y # CONFIG_PKCS8_PRIVATE_KEY_PARSER is not set CONFIG_PKCS7_MESSAGE_PARSER=y # CONFIG_PKCS7_TEST_KEY is not set # CONFIG_SIGNED_PE_FILE_VERIFICATION is not set # CONFIG_FIPS_SIGNATURE_SELFTEST is not set # # Certificates for signature checking # CONFIG_MODULE_SIG_KEY="certs/signing_key.pem" CONFIG_MODULE_SIG_KEY_TYPE_RSA=y # CONFIG_MODULE_SIG_KEY_TYPE_ECDSA is not set CONFIG_SYSTEM_TRUSTED_KEYRING=y CONFIG_SYSTEM_TRUSTED_KEYS="" # CONFIG_SYSTEM_EXTRA_CERTIFICATE is not set # CONFIG_SECONDARY_TRUSTED_KEYRING is not set # CONFIG_SYSTEM_BLACKLIST_KEYRING is not set # end of Certificates for signature checking CONFIG_BINARY_PRINTF=y # # Library routines # CONFIG_RAID6_PQ=y CONFIG_RAID6_PQ_BENCHMARK=y # CONFIG_PACKING is not set CONFIG_BITREVERSE=y CONFIG_GENERIC_STRNCPY_FROM_USER=y CONFIG_GENERIC_STRNLEN_USER=y CONFIG_GENERIC_NET_UTILS=y CONFIG_CORDIC=m CONFIG_PRIME_NUMBERS=m CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y # # Crypto library routines # CONFIG_CRYPTO_LIB_AES=y CONFIG_CRYPTO_LIB_ARC4=m CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y CONFIG_CRYPTO_ARCH_HAVE_LIB_CHACHA=m CONFIG_CRYPTO_LIB_CHACHA_GENERIC=m CONFIG_CRYPTO_LIB_CHACHA=m CONFIG_CRYPTO_LIB_CURVE25519_GENERIC=m CONFIG_CRYPTO_LIB_CURVE25519=m CONFIG_CRYPTO_LIB_DES=m CONFIG_CRYPTO_LIB_POLY1305_RSIZE=1 CONFIG_CRYPTO_LIB_POLY1305_GENERIC=m CONFIG_CRYPTO_LIB_POLY1305=m CONFIG_CRYPTO_LIB_CHACHA20POLY1305=m CONFIG_CRYPTO_LIB_SHA256=y # end of Crypto library routines CONFIG_LIB_MEMNEQ=y CONFIG_CRC_CCITT=m CONFIG_CRC16=y CONFIG_CRC_T10DIF=y CONFIG_CRC64_ROCKSOFT=y CONFIG_CRC_ITU_T=m CONFIG_CRC32=y # CONFIG_CRC32_SELFTEST is not set CONFIG_CRC32_SLICEBY8=y # CONFIG_CRC32_SLICEBY4 is not set # CONFIG_CRC32_SARWATE is not set # CONFIG_CRC32_BIT is not set CONFIG_CRC64=y CONFIG_CRC4=m CONFIG_CRC7=m CONFIG_LIBCRC32C=y CONFIG_CRC8=m CONFIG_XXHASH=y # CONFIG_RANDOM32_SELFTEST is not set CONFIG_842_COMPRESS=m CONFIG_842_DECOMPRESS=m CONFIG_ZLIB_INFLATE=y CONFIG_ZLIB_DEFLATE=y CONFIG_ZLIB_DFLTCC=y CONFIG_LZO_COMPRESS=y CONFIG_LZO_DECOMPRESS=y CONFIG_LZ4_COMPRESS=m CONFIG_LZ4HC_COMPRESS=m CONFIG_LZ4_DECOMPRESS=y CONFIG_ZSTD_COMPRESS=y CONFIG_ZSTD_DECOMPRESS=y CONFIG_XZ_DEC=y CONFIG_XZ_DEC_X86=y CONFIG_XZ_DEC_POWERPC=y CONFIG_XZ_DEC_IA64=y CONFIG_XZ_DEC_ARM=y CONFIG_XZ_DEC_ARMTHUMB=y CONFIG_XZ_DEC_SPARC=y CONFIG_XZ_DEC_MICROLZMA=y CONFIG_XZ_DEC_BCJ=y # CONFIG_XZ_DEC_TEST is not set CONFIG_DECOMPRESS_GZIP=y CONFIG_DECOMPRESS_BZIP2=y CONFIG_DECOMPRESS_LZMA=y CONFIG_DECOMPRESS_XZ=y CONFIG_DECOMPRESS_LZO=y CONFIG_DECOMPRESS_LZ4=y CONFIG_DECOMPRESS_ZSTD=y CONFIG_GENERIC_ALLOCATOR=y CONFIG_TEXTSEARCH=y CONFIG_TEXTSEARCH_KMP=m CONFIG_TEXTSEARCH_BM=m CONFIG_TEXTSEARCH_FSM=m CONFIG_INTERVAL_TREE=y CONFIG_XARRAY_MULTI=y CONFIG_ASSOCIATIVE_ARRAY=y CONFIG_HAS_DMA=y CONFIG_DMA_OPS=y CONFIG_NEED_SG_DMA_LENGTH=y CONFIG_NEED_DMA_MAP_STATE=y CONFIG_ARCH_DMA_ADDR_T_64BIT=y CONFIG_ARCH_HAS_FORCE_DMA_UNENCRYPTED=y CONFIG_SWIOTLB=y CONFIG_DMA_CMA=y # CONFIG_DMA_PERNUMA_CMA is not set # # Default contiguous memory area size: # CONFIG_CMA_SIZE_MBYTES=0 CONFIG_CMA_SIZE_SEL_MBYTES=y # CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set # CONFIG_CMA_SIZE_SEL_MIN is not set # CONFIG_CMA_SIZE_SEL_MAX is not set CONFIG_CMA_ALIGNMENT=8 # CONFIG_DMA_API_DEBUG is not set # CONFIG_DMA_MAP_BENCHMARK is not set CONFIG_SGL_ALLOC=y CONFIG_IOMMU_HELPER=y CONFIG_CPU_RMAP=y CONFIG_DQL=y CONFIG_GLOB=y # CONFIG_GLOB_SELFTEST is not set CONFIG_NLATTR=y CONFIG_LRU_CACHE=m CONFIG_CLZ_TAB=y CONFIG_IRQ_POLL=y CONFIG_MPILIB=y CONFIG_SIGNATURE=y CONFIG_DIMLIB=y CONFIG_OID_REGISTRY=y CONFIG_HAVE_GENERIC_VDSO=y CONFIG_GENERIC_GETTIMEOFDAY=y CONFIG_GENERIC_VDSO_TIME_NS=y CONFIG_FONT_SUPPORT=y # CONFIG_FONTS is not set CONFIG_FONT_8x8=y CONFIG_FONT_8x16=y CONFIG_SG_POOL=y CONFIG_ARCH_STACKWALK=y CONFIG_STACKDEPOT=y CONFIG_STACK_HASH_ORDER=20 CONFIG_SBITMAP=y # end of Library routines # # Kernel hacking # # # printk and dmesg options # CONFIG_PRINTK_TIME=y # CONFIG_PRINTK_CALLER is not set # CONFIG_STACKTRACE_BUILD_ID is not set CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7 CONFIG_CONSOLE_LOGLEVEL_QUIET=4 CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4 CONFIG_DYNAMIC_DEBUG=y CONFIG_DYNAMIC_DEBUG_CORE=y CONFIG_SYMBOLIC_ERRNAME=y CONFIG_DEBUG_BUGVERBOSE=y # end of printk and dmesg options CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_MISC=y # # Compile-time checks and compiler options # CONFIG_DEBUG_INFO=y # CONFIG_DEBUG_INFO_NONE is not set # CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set CONFIG_DEBUG_INFO_DWARF4=y # CONFIG_DEBUG_INFO_DWARF5 is not set # CONFIG_DEBUG_INFO_REDUCED is not set # CONFIG_DEBUG_INFO_COMPRESSED is not set # CONFIG_DEBUG_INFO_SPLIT is not set CONFIG_PAHOLE_HAS_SPLIT_BTF=y CONFIG_GDB_SCRIPTS=y CONFIG_FRAME_WARN=2048 # CONFIG_STRIP_ASM_SYMS is not set # CONFIG_READABLE_ASM is not set # CONFIG_HEADERS_INSTALL is not set CONFIG_DEBUG_SECTION_MISMATCH=y CONFIG_SECTION_MISMATCH_WARN_ONLY=y # CONFIG_VMLINUX_MAP is not set # CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set # end of Compile-time checks and compiler options # # Generic Kernel Debugging Instruments # CONFIG_MAGIC_SYSRQ=y CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1 CONFIG_MAGIC_SYSRQ_SERIAL=y CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE="" CONFIG_DEBUG_FS=y CONFIG_DEBUG_FS_ALLOW_ALL=y # CONFIG_DEBUG_FS_DISALLOW_MOUNT is not set # CONFIG_DEBUG_FS_ALLOW_NONE is not set CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y # CONFIG_UBSAN is not set CONFIG_HAVE_ARCH_KCSAN=y CONFIG_HAVE_KCSAN_COMPILER=y # CONFIG_KCSAN is not set # end of Generic Kernel Debugging Instruments # # Networking Debugging # # CONFIG_NET_DEV_REFCNT_TRACKER is not set # CONFIG_NET_NS_REFCNT_TRACKER is not set # CONFIG_DEBUG_NET is not set # end of Networking Debugging # # Memory Debugging # # CONFIG_PAGE_EXTENSION is not set # CONFIG_DEBUG_PAGEALLOC is not set CONFIG_SLUB_DEBUG=y # CONFIG_SLUB_DEBUG_ON is not set # CONFIG_PAGE_OWNER is not set # CONFIG_PAGE_POISONING is not set # CONFIG_DEBUG_PAGE_REF is not set # CONFIG_DEBUG_RODATA_TEST is not set CONFIG_ARCH_HAS_DEBUG_WX=y CONFIG_DEBUG_WX=y CONFIG_GENERIC_PTDUMP=y CONFIG_PTDUMP_CORE=y CONFIG_PTDUMP_DEBUGFS=y # CONFIG_DEBUG_OBJECTS is not set CONFIG_HAVE_DEBUG_KMEMLEAK=y # CONFIG_DEBUG_KMEMLEAK is not set # CONFIG_DEBUG_STACK_USAGE is not set # CONFIG_SCHED_STACK_END_CHECK is not set CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y # CONFIG_DEBUG_VM is not set # CONFIG_DEBUG_VM_PGTABLE is not set CONFIG_DEBUG_MEMORY_INIT=y # CONFIG_DEBUG_PER_CPU_MAPS is not set CONFIG_HAVE_ARCH_KASAN=y CONFIG_HAVE_ARCH_KASAN_VMALLOC=y CONFIG_CC_HAS_KASAN_GENERIC=y CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y # CONFIG_KASAN is not set CONFIG_HAVE_ARCH_KFENCE=y # CONFIG_KFENCE is not set # end of Memory Debugging # CONFIG_DEBUG_SHIRQ is not set # # Debug Oops, Lockups and Hangs # CONFIG_PANIC_ON_OOPS=y CONFIG_PANIC_ON_OOPS_VALUE=1 CONFIG_PANIC_TIMEOUT=0 # CONFIG_DETECT_HUNG_TASK is not set # CONFIG_WQ_WATCHDOG is not set CONFIG_TEST_LOCKUP=m # end of Debug Oops, Lockups and Hangs # # Scheduler Debugging # CONFIG_SCHED_DEBUG=y CONFIG_SCHED_INFO=y CONFIG_SCHEDSTATS=y # end of Scheduler Debugging # CONFIG_DEBUG_TIMEKEEPING is not set # # Lock Debugging (spinlocks, mutexes, etc...) # CONFIG_LOCK_DEBUGGING_SUPPORT=y CONFIG_PROVE_LOCKING=y # CONFIG_PROVE_RAW_LOCK_NESTING is not set # CONFIG_LOCK_STAT is not set CONFIG_DEBUG_RT_MUTEXES=y CONFIG_DEBUG_SPINLOCK=y CONFIG_DEBUG_MUTEXES=y CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y CONFIG_DEBUG_RWSEMS=y CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_LOCKDEP=y CONFIG_LOCKDEP_BITS=15 CONFIG_LOCKDEP_CHAINS_BITS=16 CONFIG_LOCKDEP_STACK_TRACE_BITS=19 CONFIG_LOCKDEP_STACK_TRACE_HASH_BITS=14 CONFIG_LOCKDEP_CIRCULAR_QUEUE_BITS=12 # CONFIG_DEBUG_LOCKDEP is not set # CONFIG_DEBUG_ATOMIC_SLEEP is not set # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set # CONFIG_LOCK_TORTURE_TEST is not set # CONFIG_WW_MUTEX_SELFTEST is not set # CONFIG_SCF_TORTURE_TEST is not set # CONFIG_CSD_LOCK_WAIT_DEBUG is not set # end of Lock Debugging (spinlocks, mutexes, etc...) CONFIG_TRACE_IRQFLAGS=y # CONFIG_DEBUG_IRQFLAGS is not set CONFIG_STACKTRACE=y # CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set # CONFIG_DEBUG_KOBJECT is not set # # Debug kernel data structures # CONFIG_DEBUG_LIST=y # CONFIG_DEBUG_PLIST is not set # CONFIG_DEBUG_SG is not set # CONFIG_DEBUG_NOTIFIERS is not set CONFIG_BUG_ON_DATA_CORRUPTION=y # end of Debug kernel data structures # CONFIG_DEBUG_CREDENTIALS is not set # # RCU Debugging # CONFIG_PROVE_RCU=y CONFIG_TORTURE_TEST=m # CONFIG_RCU_SCALE_TEST is not set CONFIG_RCU_TORTURE_TEST=m CONFIG_RCU_REF_SCALE_TEST=m CONFIG_RCU_CPU_STALL_TIMEOUT=60 CONFIG_RCU_EXP_CPU_STALL_TIMEOUT=0 CONFIG_RCU_TRACE=y # CONFIG_RCU_EQS_DEBUG is not set # end of RCU Debugging # CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set # CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set CONFIG_LATENCYTOP=y CONFIG_NOP_TRACER=y CONFIG_HAVE_FUNCTION_TRACER=y CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y CONFIG_HAVE_DYNAMIC_FTRACE=y CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y CONFIG_HAVE_SYSCALL_TRACEPOINTS=y CONFIG_HAVE_FENTRY=y CONFIG_HAVE_NOP_MCOUNT=y CONFIG_TRACER_MAX_TRACE=y CONFIG_TRACE_CLOCK=y CONFIG_RING_BUFFER=y CONFIG_EVENT_TRACING=y CONFIG_CONTEXT_SWITCH_TRACER=y CONFIG_PREEMPTIRQ_TRACEPOINTS=y CONFIG_TRACING=y CONFIG_GENERIC_TRACER=y CONFIG_TRACING_SUPPORT=y CONFIG_FTRACE=y CONFIG_BOOTTIME_TRACING=y CONFIG_FUNCTION_TRACER=y CONFIG_FUNCTION_GRAPH_TRACER=y CONFIG_DYNAMIC_FTRACE=y CONFIG_DYNAMIC_FTRACE_WITH_REGS=y CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y CONFIG_DYNAMIC_FTRACE_WITH_ARGS=y CONFIG_FUNCTION_PROFILER=y CONFIG_STACK_TRACER=y # CONFIG_IRQSOFF_TRACER is not set CONFIG_SCHED_TRACER=y # CONFIG_HWLAT_TRACER is not set # CONFIG_OSNOISE_TRACER is not set # CONFIG_TIMERLAT_TRACER is not set CONFIG_FTRACE_SYSCALLS=y CONFIG_TRACER_SNAPSHOT=y # CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP is not set CONFIG_BRANCH_PROFILE_NONE=y # CONFIG_PROFILE_ANNOTATED_BRANCHES is not set # CONFIG_PROFILE_ALL_BRANCHES is not set CONFIG_BLK_DEV_IO_TRACE=y CONFIG_KPROBE_EVENTS=y # CONFIG_KPROBE_EVENTS_ON_NOTRACE is not set CONFIG_UPROBE_EVENTS=y CONFIG_DYNAMIC_EVENTS=y CONFIG_PROBE_EVENTS=y CONFIG_FTRACE_MCOUNT_RECORD=y CONFIG_FTRACE_MCOUNT_USE_CC=y CONFIG_TRACING_MAP=y CONFIG_SYNTH_EVENTS=y CONFIG_HIST_TRIGGERS=y # CONFIG_TRACE_EVENT_INJECT is not set # CONFIG_TRACEPOINT_BENCHMARK is not set # CONFIG_RING_BUFFER_BENCHMARK is not set # CONFIG_TRACE_EVAL_MAP_FILE is not set # CONFIG_FTRACE_RECORD_RECURSION is not set # CONFIG_FTRACE_STARTUP_TEST is not set # CONFIG_RING_BUFFER_STARTUP_TEST is not set # CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set # CONFIG_PREEMPTIRQ_DELAY_TEST is not set # CONFIG_SYNTH_EVENT_GEN_TEST is not set # CONFIG_KPROBE_EVENT_GEN_TEST is not set # CONFIG_HIST_TRIGGERS_DEBUG is not set CONFIG_SAMPLES=y # CONFIG_SAMPLE_AUXDISPLAY is not set # CONFIG_SAMPLE_TRACE_EVENTS is not set # CONFIG_SAMPLE_TRACE_CUSTOM_EVENTS is not set CONFIG_SAMPLE_TRACE_PRINTK=m CONFIG_SAMPLE_FTRACE_DIRECT=m CONFIG_SAMPLE_FTRACE_DIRECT_MULTI=m # CONFIG_SAMPLE_TRACE_ARRAY is not set # CONFIG_SAMPLE_KOBJECT is not set # CONFIG_SAMPLE_KPROBES is not set # CONFIG_SAMPLE_KFIFO is not set # CONFIG_SAMPLE_LIVEPATCH is not set # CONFIG_SAMPLE_CONFIGFS is not set # CONFIG_SAMPLE_VFIO_MDEV_MTTY is not set # CONFIG_SAMPLE_VFIO_MDEV_MDPY is not set # CONFIG_SAMPLE_VFIO_MDEV_MDPY_FB is not set # CONFIG_SAMPLE_VFIO_MDEV_MBOCHS is not set # CONFIG_SAMPLE_WATCHDOG is not set CONFIG_HAVE_SAMPLE_FTRACE_DIRECT=y CONFIG_HAVE_SAMPLE_FTRACE_DIRECT_MULTI=y CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y # CONFIG_STRICT_DEVMEM is not set # # s390 Debugging # CONFIG_EARLY_PRINTK=y # CONFIG_DEBUG_ENTRY is not set # CONFIG_CIO_INJECT is not set # end of s390 Debugging # # Kernel Testing and Coverage # CONFIG_KUNIT=m CONFIG_KUNIT_DEBUGFS=y # CONFIG_KUNIT_TEST is not set # CONFIG_KUNIT_EXAMPLE_TEST is not set # CONFIG_KUNIT_ALL_TESTS is not set # CONFIG_NOTIFIER_ERROR_INJECTION is not set CONFIG_FUNCTION_ERROR_INJECTION=y # CONFIG_FAULT_INJECTION is not set CONFIG_ARCH_HAS_KCOV=y CONFIG_CC_HAS_SANCOV_TRACE_PC=y # CONFIG_KCOV is not set CONFIG_RUNTIME_TESTING_MENU=y CONFIG_LKDTM=m # CONFIG_TEST_LIST_SORT is not set # CONFIG_TEST_MIN_HEAP is not set # CONFIG_TEST_SORT is not set # CONFIG_TEST_DIV64 is not set CONFIG_KPROBES_SANITY_TEST=m # CONFIG_BACKTRACE_SELF_TEST is not set # CONFIG_TEST_REF_TRACKER is not set # CONFIG_RBTREE_TEST is not set # CONFIG_REED_SOLOMON_TEST is not set # CONFIG_INTERVAL_TREE_TEST is not set CONFIG_PERCPU_TEST=m CONFIG_ATOMIC64_SELFTEST=y # CONFIG_ASYNC_RAID6_TEST is not set # CONFIG_TEST_HEXDUMP is not set # CONFIG_STRING_SELFTEST is not set # CONFIG_TEST_STRING_HELPERS is not set # CONFIG_TEST_STRSCPY is not set # CONFIG_TEST_KSTRTOX is not set # CONFIG_TEST_PRINTF is not set # CONFIG_TEST_SCANF is not set # CONFIG_TEST_BITMAP is not set # CONFIG_TEST_UUID is not set # CONFIG_TEST_XARRAY is not set # CONFIG_TEST_RHASHTABLE is not set # CONFIG_TEST_SIPHASH is not set # CONFIG_TEST_IDA is not set # CONFIG_TEST_LKM is not set # CONFIG_TEST_BITOPS is not set # CONFIG_TEST_VMALLOC is not set # CONFIG_TEST_USER_COPY is not set CONFIG_TEST_BPF=m # CONFIG_TEST_BLACKHOLE_DEV is not set # CONFIG_FIND_BIT_BENCHMARK is not set # CONFIG_TEST_FIRMWARE is not set # CONFIG_TEST_SYSCTL is not set # CONFIG_BITFIELD_KUNIT is not set # CONFIG_HASH_KUNIT_TEST is not set # CONFIG_RESOURCE_KUNIT_TEST is not set # CONFIG_SYSCTL_KUNIT_TEST is not set # CONFIG_LIST_KUNIT_TEST is not set # CONFIG_LINEAR_RANGES_TEST is not set # CONFIG_CMDLINE_KUNIT_TEST is not set # CONFIG_BITS_TEST is not set # CONFIG_SLUB_KUNIT_TEST is not set # CONFIG_MEMCPY_KUNIT_TEST is not set # CONFIG_OVERFLOW_KUNIT_TEST is not set # CONFIG_STACKINIT_KUNIT_TEST is not set # CONFIG_TEST_UDELAY is not set # CONFIG_TEST_STATIC_KEYS is not set # CONFIG_TEST_KMOD is not set # CONFIG_TEST_MEMCAT_P is not set CONFIG_TEST_LIVEPATCH=m # CONFIG_TEST_MEMINIT is not set # CONFIG_TEST_FREE_PAGES is not set # end of Kernel Testing and Coverage # end of Kernel hacking
Hi, Steven Rostedt <rostedt@goodmis.org> writes: > On Tue, 21 Jun 2022 17:15:47 +0200 > Alexander Gordeev <agordeev@linux.ibm.com> wrote: > >> So I assume (checked actually) the return 0 below from kernel/sched/core.c: >> wait_task_inactive() is where it bails out: >> >> 3303 while (task_running(rq, p)) { >> 3304 if (match_state && unlikely(READ_ONCE(p->__state) != match_state)) >> 3305 return 0; >> 3306 cpu_relax(); >> 3307 } >> >> Yet, the child task is always found in __TASK_TRACED state (as seen >> in crash dumps): >> >> > 101447 11342 13 ce3a8100 RU 0.0 10040 4412 strace >> 101450 101447 0 bb04b200 TR 0.0 2272 1136 kill_child >> 108261 101447 2 d0b10100 TR 0.0 2272 532 kill_child >> crash> task bb04b200 __state >> PID: 101450 TASK: bb04b200 CPU: 0 COMMAND: "kill_child" >> __state = 8, >> >> crash> task d0b10100 __state >> PID: 108261 TASK: d0b10100 CPU: 2 COMMAND: "kill_child" >> __state = 8, > > If you are using crash, can you enable all trace events? > > Then you should be able to extract the ftrace ring buffer from crash using > the trace.so extend (https://github.com/fujitsu/crash-trace) > > I guess it should still work with s390. > > Then you can see the events that lead up to the crash. Alexander is busy with other stuff, so I took over. I enabled the sys,signal,sched and task tracepoints and ftrace_dump_on_oops. The last lines from the trace buffer are: [ 281.043459] strace-1177215 0d.... 269457070us : sched_waking: comm=kill_child pid=1178157 prio=120 target_cpu=003 [ 281.043463] kill_chi-1177218 1d.... 269457070us : signal_generate: sig=17 errno=0 code=4 comm=strace pid=1177215 grp=1 res=1 [ 281.043467] kill_chi-1177218 1d.... 269457070us : sched_stat_runtime: comm=kill_child pid=1177218 runtime=5299 [ns] vruntime=1830714210855 [ns] [ 281.043471] kill_chi-1177218 1d.... 269457071us : sched_switch: prev_comm=kill_child prev_pid=1177218 prev_prio=120 prev_state=t ==> next_comm=swapper/1 next_pid=0 next_prio=120 [ 281.043475] strace-1177215 0..... 269457071us : sys_ptrace -> 0x50 [ 281.043478] strace-1177215 0..... 269457071us : sys_write(fd: 2, buf: 2aa15db3ad0, count: 12) [ 281.043482] strace-1177215 0..... 269457072us : sys_write -> 0x12 [ 281.043485] <idle>-0 3dNh.. 269457072us : sched_wakeup: comm=kill_child pid=1178157 prio=120 target_cpu=003 [ 281.043489] <idle>-0 3d.... 269457073us : sched_switch: prev_comm=swapper/3 prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=kill_child next_pid=1178157 next_prio=120 [ 281.043493] strace-1177215 0..... 269457073us : sys_write(fd: 2, buf: 2aa15db3ad0, count: 1a) [ 281.043496] strace-1177215 0..... 269457073us : sys_write -> 0x1a [ 281.043500] kill_chi-1178157 3..... 269457073us : sys_sched_yield -> 0xffffffffffffffda [ 281.043504] strace-1177215 0..... 269457073us : sys_ptrace(request: 18, pid: 11fa2d, addr: 0, data: 0) [ 281.043508] kill_chi-1178157 3d.... 269457073us : signal_deliver: sig=9 errno=0 code=0 sa_handler=0 sa_flags=0 [ 281.043511] kill_chi-1178157 3d.... 269457074us : signal_generate: sig=17 errno=0 code=4 comm=strace pid=1177215 grp=1 res=1 [ 281.043515] kill_chi-1178157 3d.... 269457074us : sched_stat_runtime: comm=kill_child pid=1178157 runtime=2408 [ns] vruntime=1983050055579 [ns] [ 281.043519] kill_chi-1178157 3d.... 269457075us : sched_switch: prev_comm=kill_child prev_pid=1178157 prev_prio=120 prev_state=t ==> next_comm=swapper/3 next_pid=0 next_prio=120 I attached the full output to this mail. I haven't yet tried to understand the problem, i just wanted to send you the requested information in the hope that it will help you. Regards Sven
On Tue, Jun 28, 2022 at 10:39:59PM -0500, Eric W. Biederman wrote: > > That is, the two paths should already be synchronized, and the memory > > barriers will not help anything inside the locks. The locking should (and > > must) handle all that. > > I would presume so to. However the READ_ONCE that is going astray > does not look like it is honoring that. > > So perhaps there is a bug in the s390 spin_lock barriers? Perhaps there > is a subtle detail in the barriers that spin locks provide that we are > overlooking? So the thing is, s390 is, like x86, a TSO architecture with SC atomics. Or at least it used to be; I'm not entirely solid on the Z196 features. I've been looking at this and I can't find anything obviously wrong. arch_spin_trylock_once() has what seems a spurious barrier() but that's not going to cause this. Specifically, s390 is using a simple test-and-set spinlock based on their Compare-and-Swap (CS) instruction (so no Z196 funnies around). Except perhaps arch_spin_unlock(), I can't grok the magic there. It does something weird before the presumably regular TSO store of 0 into the lock word. Ooohh.. /me finds arch_spin_lock_queued().. *urfh* because obviously a copy of queued spinlocks is what we need. rwlock_t OTOH is using __atomic_add_*() and that's all Z196 magic. Sven, does all this still reproduce if you take out CONFIG_HAVE_MARCH_Z196_FEATURES ? Also, could you please explain the Z196 bits or point me to the relevant section in the PoO. Additionally, what's that _niai[48] stuff? And I'm assuming s390 has hardware fairness on competing CS ?
Sven Schnelle <svens@linux.ibm.com> writes: > Steven Rostedt <rostedt@goodmis.org> writes: > >> On Tue, 21 Jun 2022 17:15:47 +0200 >> Alexander Gordeev <agordeev@linux.ibm.com> wrote: >> >>> So I assume (checked actually) the return 0 below from kernel/sched/core.c: >>> wait_task_inactive() is where it bails out: >>> >>> 3303 while (task_running(rq, p)) { >>> 3304 if (match_state && unlikely(READ_ONCE(p->__state) != match_state)) >>> 3305 return 0; >>> 3306 cpu_relax(); >>> 3307 } >>> >>> Yet, the child task is always found in __TASK_TRACED state (as seen >>> in crash dumps): >>> >>> > 101447 11342 13 ce3a8100 RU 0.0 10040 4412 strace >>> 101450 101447 0 bb04b200 TR 0.0 2272 1136 kill_child >>> 108261 101447 2 d0b10100 TR 0.0 2272 532 kill_child >>> crash> task bb04b200 __state >>> PID: 101450 TASK: bb04b200 CPU: 0 COMMAND: "kill_child" >>> __state = 8, >>> >>> crash> task d0b10100 __state >>> PID: 108261 TASK: d0b10100 CPU: 2 COMMAND: "kill_child" >>> __state = 8, >> >> If you are using crash, can you enable all trace events? >> >> Then you should be able to extract the ftrace ring buffer from crash using >> the trace.so extend (https://github.com/fujitsu/crash-trace) >> >> I guess it should still work with s390. >> >> Then you can see the events that lead up to the crash. I think there's a race in ptrace_check_attach(). It first calls ptrace_freeze_task(), which checks whether JOBCTL_TRACED is set. If it is (and a few other conditions match) it will set ret = 0. Later outside of siglock and tasklist_lock it will call wait_task_inactive, assuming the target is in TASK_TRACED, but it isn't. ptrace_stop(), which runs on another CPU, does: set_special_state(TASK_TRACED); current->jobctl |= JOBCTL_TRACED; which looks ok on first sight, but in this case JOBCTL is already set, so the reading CPU will immediately move on to wait_task_inactive(), before JOBCTL_TRACED is set. I don't know whether this is a valid combination. I never looked into JOBCTL_* semantics, but i guess now is a good time to do so. I added some debugging statements, and that gives: [ 86.218488] kill_chi-300545 2d.... 79990135us : ptrace_stop: state 8 [ 86.218492] kill_chi-300545 2d.... 79990136us : signal_generate: sig=17 errno=0 code=4 comm=strace pid=300542 grp=1 res=1 [ 86.218496] kill_chi-300545 2d.... 79990136us : sched_stat_runtime: comm=kill_child pid=300545 runtime=3058 [ns] vruntime=606165713178 [ns] [ 86.218500] kill_chi-300545 2d.... 79990136us : sched_switch: prev_comm=kill_child prev_pid=300545 prev_prio=120 prev_state=t ==> next_comm=swapper/2 next_pid=0 next_prio=120 [ 86.218504] strace-300542 7..... 79990139us : sys_ptrace -> 0x50 [ 86.218508] strace-300542 7..... 79990139us : sys_write(fd: 2, buf: 2aa198f7ad0, count: 12) [ 86.218512] strace-300542 7..... 79990140us : sys_write -> 0x12 [ 86.218515] <idle>-0 6dNh.. 79990140us : sched_wakeup: comm=kill_child pid=343805 prio=120 target_cpu=006 [ 86.218519] <idle>-0 6d.... 79990140us : sched_switch: prev_comm=swapper/6 prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=kill_child next_pid=343805 next_prio=120 [ 86.218524] strace-300542 7..... 79990140us : sys_write(fd: 2, buf: 2aa198f7ad0, count: 19) [ 86.218527] strace-300542 7..... 79990141us : sys_write -> 0x19 [ 86.218531] kill_chi-343805 6..... 79990141us : sys_sched_yield -> 0xffffffffffffffda [ 86.218535] strace-300542 7..... 79990141us : sys_ptrace(request: 18, pid: 53efd, addr: 0, data: 0) [ 86.218539] kill_chi-343805 6d.... 79990141us : signal_deliver: sig=9 errno=0 code=0 sa_handler=0 sa_flags=0 [ 86.218543] strace-300542 7d.... 79990141us : ptrace_check_attach: task_is_traced: 1, fatal signal pending: 0 [ 86.218547] strace-300542 7..... 79990141us : ptrace_check_attach: child->pid = 343805, child->__flags=0 [ 86.218551] kill_chi-343805 6d.... 79990141us : ptrace_stop: JOBCTL_TRACED already set, state=0 <------ valid combination of flags? [ 86.218554] kill_chi-343805 6d.... 79990141us : ptrace_stop: state 8 [ 86.218558] kill_chi-343805 6d.... 79990142us : signal_generate: sig=17 errno=0 code=4 comm=strace pid=300542 grp=1 res=1 [ 86.218562] kill_chi-343805 6d.... 79990142us : sched_stat_runtime: comm=kill_child pid=343805 runtime=2135 [ns] vruntime=556109013931 [ns] [ 86.218566] strace-300542 7..... 79990142us : wait_task_inactive: NO MATCH: state 0, match_state 8, pid 343805 [ 86.218570] kill_chi-343805 6d.... 79990142us : sched_switch: prev_comm=kill_child prev_pid=343805 prev_prio=120 prev_state=t ==>next_comm=swapper/6 next_pid=0 next_prio=120 I'll continue debugging tomorrow, but maybe this helps already.
On Tue, Jul 05, 2022 at 07:28:49PM +0200, Sven Schnelle wrote: > Sven Schnelle <svens@linux.ibm.com> writes: > I think there's a race in ptrace_check_attach(). It first calls > ptrace_freeze_task(), which checks whether JOBCTL_TRACED is set. > If it is (and a few other conditions match) it will set ret = 0. > > Later outside of siglock and tasklist_lock it will call > wait_task_inactive, assuming the target is in TASK_TRACED, but it isn't. > > ptrace_stop(), which runs on another CPU, does: > > set_special_state(TASK_TRACED); > current->jobctl |= JOBCTL_TRACED; > > which looks ok on first sight, but in this case JOBCTL is already set, > so the reading CPU will immediately move on to wait_task_inactive(), > before JOBCTL_TRACED is set. I don't know whether this is a valid > combination. I never looked into JOBCTL_* semantics, but i guess now > is a good time to do so. I added some debugging statements, and that > gives: > > [ 86.218488] kill_chi-300545 2d.... 79990135us : ptrace_stop: state 8 > [ 86.218492] kill_chi-300545 2d.... 79990136us : signal_generate: sig=17 errno=0 code=4 comm=strace pid=300542 grp=1 res=1 > [ 86.218496] kill_chi-300545 2d.... 79990136us : sched_stat_runtime: comm=kill_child pid=300545 runtime=3058 [ns] vruntime=606165713178 [ns] > [ 86.218500] kill_chi-300545 2d.... 79990136us : sched_switch: prev_comm=kill_child prev_pid=300545 prev_prio=120 prev_state=t ==> next_comm=swapper/2 next_pid=0 next_prio=120 > [ 86.218504] strace-300542 7..... 79990139us : sys_ptrace -> 0x50 > [ 86.218508] strace-300542 7..... 79990139us : sys_write(fd: 2, buf: 2aa198f7ad0, count: 12) > [ 86.218512] strace-300542 7..... 79990140us : sys_write -> 0x12 > [ 86.218515] <idle>-0 6dNh.. 79990140us : sched_wakeup: comm=kill_child pid=343805 prio=120 target_cpu=006 > [ 86.218519] <idle>-0 6d.... 79990140us : sched_switch: prev_comm=swapper/6 prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=kill_child next_pid=343805 next_prio=120 > [ 86.218524] strace-300542 7..... 79990140us : sys_write(fd: 2, buf: 2aa198f7ad0, count: 19) > [ 86.218527] strace-300542 7..... 79990141us : sys_write -> 0x19 > [ 86.218531] kill_chi-343805 6..... 79990141us : sys_sched_yield -> 0xffffffffffffffda > [ 86.218535] strace-300542 7..... 79990141us : sys_ptrace(request: 18, pid: 53efd, addr: 0, data: 0) > [ 86.218539] kill_chi-343805 6d.... 79990141us : signal_deliver: sig=9 errno=0 code=0 sa_handler=0 sa_flags=0 > [ 86.218543] strace-300542 7d.... 79990141us : ptrace_check_attach: task_is_traced: 1, fatal signal pending: 0 > [ 86.218547] strace-300542 7..... 79990141us : ptrace_check_attach: child->pid = 343805, child->__flags=0 > [ 86.218551] kill_chi-343805 6d.... 79990141us : ptrace_stop: JOBCTL_TRACED already set, state=0 <------ valid combination of flags? Yeah, that's not supposed to be so. JOBCTL_TRACED is supposed to follow __TASK_TRACED for now. Set when __TASK_TRACED, cleared when TASK_RUNNING. Specifically {ptrace_,}signal_wake_up() in signal.h clear JOBCTL_TRACED when they would wake a __TASK_TRACED task. > [ 86.218554] kill_chi-343805 6d.... 79990141us : ptrace_stop: state 8 > [ 86.218558] kill_chi-343805 6d.... 79990142us : signal_generate: sig=17 errno=0 code=4 comm=strace pid=300542 grp=1 res=1 > [ 86.218562] kill_chi-343805 6d.... 79990142us : sched_stat_runtime: comm=kill_child pid=343805 runtime=2135 [ns] vruntime=556109013931 [ns] > [ 86.218566] strace-300542 7..... 79990142us : wait_task_inactive: NO MATCH: state 0, match_state 8, pid 343805 > [ 86.218570] kill_chi-343805 6d.... 79990142us : sched_switch: prev_comm=kill_child prev_pid=343805 prev_prio=120 prev_state=t ==>next_comm=swapper/6 next_pid=0 next_prio=120 >
On Tue, Jul 05, 2022 at 05:44:06PM +0200, Peter Zijlstra wrote: Hi Peter, > Sven, does all this still reproduce if you take out > CONFIG_HAVE_MARCH_Z196_FEATURES ? Yes, it hits.
Hi Peter, Peter Zijlstra <peterz@infradead.org> writes: > On Tue, Jul 05, 2022 at 07:28:49PM +0200, Sven Schnelle wrote: >> Sven Schnelle <svens@linux.ibm.com> writes: > >> I think there's a race in ptrace_check_attach(). It first calls >> ptrace_freeze_task(), which checks whether JOBCTL_TRACED is set. >> If it is (and a few other conditions match) it will set ret = 0. >> >> Later outside of siglock and tasklist_lock it will call >> wait_task_inactive, assuming the target is in TASK_TRACED, but it isn't. >> >> ptrace_stop(), which runs on another CPU, does: >> >> set_special_state(TASK_TRACED); >> current->jobctl |= JOBCTL_TRACED; >> >> which looks ok on first sight, but in this case JOBCTL is already set, >> so the reading CPU will immediately move on to wait_task_inactive(), >> before JOBCTL_TRACED is set. I don't know whether this is a valid >> combination. I never looked into JOBCTL_* semantics, but i guess now >> is a good time to do so. I added some debugging statements, and that >> gives: >> >> [ 86.218488] kill_chi-300545 2d.... 79990135us : ptrace_stop: state 8 >> [ 86.218492] kill_chi-300545 2d.... 79990136us : signal_generate: sig=17 errno=0 code=4 comm=strace pid=300542 grp=1 res=1 >> [ 86.218496] kill_chi-300545 2d.... 79990136us : sched_stat_runtime: comm=kill_child pid=300545 runtime=3058 [ns] vruntime=606165713178 [ns] >> [ 86.218500] kill_chi-300545 2d.... 79990136us : sched_switch: >> prev_comm=kill_child prev_pid=300545 prev_prio=120 prev_state=t ==> >> next_comm=swapper/2 next_pid=0 next_prio=120 >> [ 86.218504] strace-300542 7..... 79990139us : sys_ptrace -> 0x50 >> [ 86.218508] strace-300542 7..... 79990139us : sys_write(fd: 2, buf: 2aa198f7ad0, count: 12) >> [ 86.218512] strace-300542 7..... 79990140us : sys_write -> 0x12 >> [ 86.218515] <idle>-0 6dNh.. 79990140us : sched_wakeup: comm=kill_child pid=343805 prio=120 target_cpu=006 >> [ 86.218519] <idle>-0 6d.... 79990140us : sched_switch: >> prev_comm=swapper/6 prev_pid=0 prev_prio=120 prev_state=R ==> >> next_comm=kill_child next_pid=343805 next_prio=120 >> [ 86.218524] strace-300542 7..... 79990140us : sys_write(fd: 2, buf: 2aa198f7ad0, count: 19) >> [ 86.218527] strace-300542 7..... 79990141us : sys_write -> 0x19 >> [ 86.218531] kill_chi-343805 6..... 79990141us : sys_sched_yield -> 0xffffffffffffffda >> [ 86.218535] strace-300542 7..... 79990141us : sys_ptrace(request: 18, pid: 53efd, addr: 0, data: 0) >> [ 86.218539] kill_chi-343805 6d.... 79990141us : signal_deliver: sig=9 errno=0 code=0 sa_handler=0 sa_flags=0 >> [ 86.218543] strace-300542 7d.... 79990141us : ptrace_check_attach: task_is_traced: 1, fatal signal pending: 0 >> [ 86.218547] strace-300542 7..... 79990141us : ptrace_check_attach: child->pid = 343805, child->__flags=0 >> [ 86.218551] kill_chi-343805 6d.... 79990141us : ptrace_stop: JOBCTL_TRACED already set, state=0 <------ valid combination of flags? > > Yeah, that's not supposed to be so. JOBCTL_TRACED is supposed to follow > __TASK_TRACED for now. Set when __TASK_TRACED, cleared when > TASK_RUNNING. > > Specifically {ptrace_,}signal_wake_up() in signal.h clear JOBCTL_TRACED > when they would wake a __TASK_TRACED task. try_to_wake_up() clears TASK_TRACED in this case because a signal (SIGKILL) has to be delivered. As a test I put the following change on top, and it "fixes" the problem: diff --git a/kernel/sched/core.c b/kernel/sched/core.c index da0bf6fe9ecd..f2e0f5e70e77 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4141,6 +4149,9 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) * TASK_WAKING such that we can unlock p->pi_lock before doing the * enqueue, such as ttwu_queue_wakelist(). */ + if (p->__state & TASK_TRACED) + trace_printk("clearing TASK_TRACED 2\n"); + p->jobctl &= ~JOBCTL_TRACED; WRITE_ONCE(p->__state, TASK_WAKING); /* There are several places where the state is changed from TASK_TRACED to something else without clearing JOBCTL_TRACED.
On Wed, Jul 06, 2022 at 09:58:55AM +0200, Sven Schnelle wrote: > >> [ 86.218551] kill_chi-343805 6d.... 79990141us : ptrace_stop: JOBCTL_TRACED already set, state=0 <------ valid combination of flags? > > > > Yeah, that's not supposed to be so. JOBCTL_TRACED is supposed to follow > > __TASK_TRACED for now. Set when __TASK_TRACED, cleared when > > TASK_RUNNING. > > > > Specifically {ptrace_,}signal_wake_up() in signal.h clear JOBCTL_TRACED > > when they would wake a __TASK_TRACED task. > > try_to_wake_up() clears TASK_TRACED in this case because a signal > (SIGKILL) has to be delivered. As a test I put the following change > on top, and it "fixes" the problem: > > diff --git a/kernel/sched/core.c b/kernel/sched/core.c > index da0bf6fe9ecd..f2e0f5e70e77 100644 > --- a/kernel/sched/core.c > +++ b/kernel/sched/core.c > @@ -4141,6 +4149,9 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) > * TASK_WAKING such that we can unlock p->pi_lock before doing the > * enqueue, such as ttwu_queue_wakelist(). > */ > + if (p->__state & TASK_TRACED) > + trace_printk("clearing TASK_TRACED 2\n"); > + p->jobctl &= ~JOBCTL_TRACED; > WRITE_ONCE(p->__state, TASK_WAKING); > > /* > > There are several places where the state is changed from TASK_TRACED to > something else without clearing JOBCTL_TRACED. I'm having difficulty spotting them; I find: TASK_WAKEKILL: signal_wake_up() __TASK_TRACED: ptrace_signal_wake_up(), ptrace_unfreeze_traced(), ptrace_resume() And all those sites dutifully clear JOBCTL_TRACED. I'd be most interested in the calstack for the 'clearing TASK_TRACED 2' events to see where we miss a spot.
Peter Zijlstra <peterz@infradead.org> writes: > On Wed, Jul 06, 2022 at 09:58:55AM +0200, Sven Schnelle wrote: > >> >> [ 86.218551] kill_chi-343805 6d.... 79990141us : ptrace_stop: JOBCTL_TRACED already set, state=0 <------ valid combination of flags? >> > >> > Yeah, that's not supposed to be so. JOBCTL_TRACED is supposed to follow >> > __TASK_TRACED for now. Set when __TASK_TRACED, cleared when >> > TASK_RUNNING. >> > >> > Specifically {ptrace_,}signal_wake_up() in signal.h clear JOBCTL_TRACED >> > when they would wake a __TASK_TRACED task. >> >> try_to_wake_up() clears TASK_TRACED in this case because a signal >> (SIGKILL) has to be delivered. As a test I put the following change >> on top, and it "fixes" the problem: >> >> diff --git a/kernel/sched/core.c b/kernel/sched/core.c >> index da0bf6fe9ecd..f2e0f5e70e77 100644 >> --- a/kernel/sched/core.c >> +++ b/kernel/sched/core.c >> @@ -4141,6 +4149,9 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) >> * TASK_WAKING such that we can unlock p->pi_lock before doing the >> * enqueue, such as ttwu_queue_wakelist(). >> */ >> + if (p->__state & TASK_TRACED) >> + trace_printk("clearing TASK_TRACED 2\n"); >> + p->jobctl &= ~JOBCTL_TRACED; >> WRITE_ONCE(p->__state, TASK_WAKING); >> >> /* >> >> There are several places where the state is changed from TASK_TRACED to >> something else without clearing JOBCTL_TRACED. > > I'm having difficulty spotting them; I find: > > TASK_WAKEKILL: signal_wake_up() > __TASK_TRACED: ptrace_signal_wake_up(), ptrace_unfreeze_traced(), ptrace_resume() > > And all those sites dutifully clear JOBCTL_TRACED. > > I'd be most interested in the calstack for the 'clearing TASK_TRACED 2' > events to see where we miss a spot. The calltrace is: [ 9.863613] Call Trace: [ 9.863616] [<00000000d3105f0e>] try_to_wake_up+0xae/0x620 [ 9.863620] ([<00000000d3106164>] try_to_wake_up+0x304/0x620) [ 9.863623] [<00000000d30d1e46>] ptrace_unfreeze_traced+0x9e/0xa8 [ 9.863629] [<00000000d30d2ef0>] __s390x_sys_ptrace+0xc0/0x160 [ 9.863633] [<00000000d3c5d8f4>] __do_syscall+0x1d4/0x200 [ 9.863678] [<00000000d3c6c332>] system_call+0x82/0xb0 [ 9.863685] Last Breaking-Event-Address: [ 9.863686] [<00000000d3106176>] try_to_wake_up+0x316/0x620 [ 9.863688] ---[ end trace 0000000000000000 ]--- ptrace_unfreeze_traced() is: static void ptrace_unfreeze_traced(struct task_struct *task) { unsigned long flags; /* * The child may be awake and may have cleared * JOBCTL_PTRACE_FROZEN (see ptrace_resume). The child will * not set JOBCTL_PTRACE_FROZEN or enter __TASK_TRACED anew. */ if (lock_task_sighand(task, &flags)) { task->jobctl &= ~JOBCTL_PTRACE_FROZEN; if (__fatal_signal_pending(task)) { task->jobctl &= ~TASK_TRACED; Looking at this, shouldn't the line above read task->jobctl &= ~JOBCTL_TRACED? wake_up_state(task, __TASK_TRACED); } unlock_task_sighand(task, &flags); } }
On Wed, Jul 06, 2022 at 11:27:05AM +0200, Sven Schnelle wrote: > Peter Zijlstra <peterz@infradead.org> writes: > > > On Wed, Jul 06, 2022 at 09:58:55AM +0200, Sven Schnelle wrote: > > > >> >> [ 86.218551] kill_chi-343805 6d.... 79990141us : ptrace_stop: JOBCTL_TRACED already set, state=0 <------ valid combination of flags? > >> > > >> > Yeah, that's not supposed to be so. JOBCTL_TRACED is supposed to follow > >> > __TASK_TRACED for now. Set when __TASK_TRACED, cleared when > >> > TASK_RUNNING. > >> > > >> > Specifically {ptrace_,}signal_wake_up() in signal.h clear JOBCTL_TRACED > >> > when they would wake a __TASK_TRACED task. > >> > >> try_to_wake_up() clears TASK_TRACED in this case because a signal > >> (SIGKILL) has to be delivered. As a test I put the following change > >> on top, and it "fixes" the problem: > >> > >> diff --git a/kernel/sched/core.c b/kernel/sched/core.c > >> index da0bf6fe9ecd..f2e0f5e70e77 100644 > >> --- a/kernel/sched/core.c > >> +++ b/kernel/sched/core.c > >> @@ -4141,6 +4149,9 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) > >> * TASK_WAKING such that we can unlock p->pi_lock before doing the > >> * enqueue, such as ttwu_queue_wakelist(). > >> */ > >> + if (p->__state & TASK_TRACED) > >> + trace_printk("clearing TASK_TRACED 2\n"); > >> + p->jobctl &= ~JOBCTL_TRACED; > >> WRITE_ONCE(p->__state, TASK_WAKING); > >> > >> /* > >> > >> There are several places where the state is changed from TASK_TRACED to > >> something else without clearing JOBCTL_TRACED. > > > > I'm having difficulty spotting them; I find: > > > > TASK_WAKEKILL: signal_wake_up() > > __TASK_TRACED: ptrace_signal_wake_up(), ptrace_unfreeze_traced(), ptrace_resume() > > > > And all those sites dutifully clear JOBCTL_TRACED. > > > > I'd be most interested in the calstack for the 'clearing TASK_TRACED 2' > > events to see where we miss a spot. > > The calltrace is: > [ 9.863613] Call Trace: > [ 9.863616] [<00000000d3105f0e>] try_to_wake_up+0xae/0x620 > [ 9.863620] ([<00000000d3106164>] try_to_wake_up+0x304/0x620) > [ 9.863623] [<00000000d30d1e46>] ptrace_unfreeze_traced+0x9e/0xa8 > [ 9.863629] [<00000000d30d2ef0>] __s390x_sys_ptrace+0xc0/0x160 > [ 9.863633] [<00000000d3c5d8f4>] __do_syscall+0x1d4/0x200 > [ 9.863678] [<00000000d3c6c332>] system_call+0x82/0xb0 > [ 9.863685] Last Breaking-Event-Address: > [ 9.863686] [<00000000d3106176>] try_to_wake_up+0x316/0x620 > [ 9.863688] ---[ end trace 0000000000000000 ]--- > > ptrace_unfreeze_traced() is: > > static void ptrace_unfreeze_traced(struct task_struct *task) > { > unsigned long flags; > > /* > * The child may be awake and may have cleared > * JOBCTL_PTRACE_FROZEN (see ptrace_resume). The child will > * not set JOBCTL_PTRACE_FROZEN or enter __TASK_TRACED anew. > */ > if (lock_task_sighand(task, &flags)) { > task->jobctl &= ~JOBCTL_PTRACE_FROZEN; > if (__fatal_signal_pending(task)) { > task->jobctl &= ~TASK_TRACED; > > Looking at this, shouldn't the line above read task->jobctl &= ~JOBCTL_TRACED? YES! Absolutely. > wake_up_state(task, __TASK_TRACED); > } > unlock_task_sighand(task, &flags); > } > }
diff --git a/include/linux/sched.h b/include/linux/sched.h index 610f2fdb1e2c..cbe5c899599c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -118,11 +118,9 @@ struct task_group; #define task_is_running(task) (READ_ONCE((task)->__state) == TASK_RUNNING) -#define task_is_traced(task) ((READ_ONCE(task->__state) & __TASK_TRACED) != 0) - -#define task_is_stopped(task) ((READ_ONCE(task->__state) & __TASK_STOPPED) != 0) - -#define task_is_stopped_or_traced(task) ((READ_ONCE(task->__state) & (__TASK_STOPPED | __TASK_TRACED)) != 0) +#define task_is_traced(task) ((READ_ONCE(task->jobctl) & JOBCTL_TRACED) != 0) +#define task_is_stopped(task) ((READ_ONCE(task->jobctl) & JOBCTL_STOPPED) != 0) +#define task_is_stopped_or_traced(task) ((READ_ONCE(task->jobctl) & (JOBCTL_STOPPED | JOBCTL_TRACED)) != 0) /* * Special states are those that do not use the normal wait-loop pattern. See diff --git a/include/linux/sched/jobctl.h b/include/linux/sched/jobctl.h index d556c3425963..68876d0a7ef9 100644 --- a/include/linux/sched/jobctl.h +++ b/include/linux/sched/jobctl.h @@ -21,6 +21,9 @@ struct task_struct; #define JOBCTL_TRAP_FREEZE_BIT 23 /* trap for cgroup freezer */ #define JOBCTL_PTRACE_FROZEN_BIT 24 /* frozen for ptrace */ +#define JOBCTL_STOPPED_BIT 26 /* do_signal_stop() */ +#define JOBCTL_TRACED_BIT 27 /* ptrace_stop() */ + #define JOBCTL_STOP_DEQUEUED (1UL << JOBCTL_STOP_DEQUEUED_BIT) #define JOBCTL_STOP_PENDING (1UL << JOBCTL_STOP_PENDING_BIT) #define JOBCTL_STOP_CONSUME (1UL << JOBCTL_STOP_CONSUME_BIT) @@ -31,6 +34,9 @@ struct task_struct; #define JOBCTL_TRAP_FREEZE (1UL << JOBCTL_TRAP_FREEZE_BIT) #define JOBCTL_PTRACE_FROZEN (1UL << JOBCTL_PTRACE_FROZEN_BIT) +#define JOBCTL_STOPPED (1UL << JOBCTL_STOPPED_BIT) +#define JOBCTL_TRACED (1UL << JOBCTL_TRACED_BIT) + #define JOBCTL_TRAP_MASK (JOBCTL_TRAP_STOP | JOBCTL_TRAP_NOTIFY) #define JOBCTL_PENDING_MASK (JOBCTL_STOP_PENDING | JOBCTL_TRAP_MASK) diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h index e66948abbee4..07ba3404fcde 100644 --- a/include/linux/sched/signal.h +++ b/include/linux/sched/signal.h @@ -294,8 +294,10 @@ static inline int kernel_dequeue_signal(void) static inline void kernel_signal_stop(void) { spin_lock_irq(¤t->sighand->siglock); - if (current->jobctl & JOBCTL_STOP_DEQUEUED) + if (current->jobctl & JOBCTL_STOP_DEQUEUED) { + current->jobctl |= JOBCTL_STOPPED; set_special_state(TASK_STOPPED); + } spin_unlock_irq(¤t->sighand->siglock); schedule(); @@ -437,12 +439,21 @@ extern void signal_wake_up_state(struct task_struct *t, unsigned int state); static inline void signal_wake_up(struct task_struct *t, bool fatal) { - fatal = fatal && !(t->jobctl & JOBCTL_PTRACE_FROZEN); - signal_wake_up_state(t, fatal ? TASK_WAKEKILL | __TASK_TRACED : 0); + unsigned int state = 0; + if (fatal && !(t->jobctl & JOBCTL_PTRACE_FROZEN)) { + t->jobctl &= ~(JOBCTL_STOPPED | JOBCTL_TRACED); + state = TASK_WAKEKILL | __TASK_TRACED; + } + signal_wake_up_state(t, state); } static inline void ptrace_signal_wake_up(struct task_struct *t, bool resume) { - signal_wake_up_state(t, resume ? __TASK_TRACED : 0); + unsigned int state = 0; + if (resume) { + t->jobctl &= ~JOBCTL_TRACED; + state = __TASK_TRACED; + } + signal_wake_up_state(t, state); } void task_join_group_stop(struct task_struct *task); diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 36a5b7a00d2f..328a34a99124 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -185,7 +185,12 @@ static bool looks_like_a_spurious_pid(struct task_struct *task) return true; } -/* Ensure that nothing can wake it up, even SIGKILL */ +/* + * Ensure that nothing can wake it up, even SIGKILL + * + * A task is switched to this state while a ptrace operation is in progress; + * such that the ptrace operation is uninterruptible. + */ static bool ptrace_freeze_traced(struct task_struct *task) { bool ret = false; @@ -216,8 +221,10 @@ static void ptrace_unfreeze_traced(struct task_struct *task) */ if (lock_task_sighand(task, &flags)) { task->jobctl &= ~JOBCTL_PTRACE_FROZEN; - if (__fatal_signal_pending(task)) + if (__fatal_signal_pending(task)) { + task->jobctl &= ~TASK_TRACED; wake_up_state(task, __TASK_TRACED); + } unlock_task_sighand(task, &flags); } } @@ -462,8 +469,10 @@ static int ptrace_attach(struct task_struct *task, long request, * in and out of STOPPED are protected by siglock. */ if (task_is_stopped(task) && - task_set_jobctl_pending(task, JOBCTL_TRAP_STOP | JOBCTL_TRAPPING)) + task_set_jobctl_pending(task, JOBCTL_TRAP_STOP | JOBCTL_TRAPPING)) { + task->jobctl &= ~JOBCTL_STOPPED; signal_wake_up_state(task, __TASK_STOPPED); + } spin_unlock(&task->sighand->siglock); @@ -875,6 +884,7 @@ static int ptrace_resume(struct task_struct *child, long request, */ spin_lock_irq(&child->sighand->siglock); child->exit_code = data; + child->jobctl &= ~JOBCTL_TRACED; wake_up_state(child, __TASK_TRACED); spin_unlock_irq(&child->sighand->siglock); diff --git a/kernel/signal.c b/kernel/signal.c index a58b68a2d3c6..e782c2611b64 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -762,7 +762,10 @@ static int dequeue_synchronous_signal(kernel_siginfo_t *info) */ void signal_wake_up_state(struct task_struct *t, unsigned int state) { + lockdep_assert_held(&t->sighand->siglock); + set_tsk_thread_flag(t, TIF_SIGPENDING); + /* * TASK_WAKEKILL also means wake it up in the stopped/traced/killable * case. We don't check t->state here because there is a race with it @@ -930,9 +933,10 @@ static bool prepare_signal(int sig, struct task_struct *p, bool force) for_each_thread(p, t) { flush_sigqueue_mask(&flush, &t->pending); task_clear_jobctl_pending(t, JOBCTL_STOP_PENDING); - if (likely(!(t->ptrace & PT_SEIZED))) + if (likely(!(t->ptrace & PT_SEIZED))) { + t->jobctl &= ~JOBCTL_STOPPED; wake_up_state(t, __TASK_STOPPED); - else + } else ptrace_trap_notify(t); } @@ -2218,6 +2222,7 @@ static int ptrace_stop(int exit_code, int why, unsigned long message, return exit_code; set_special_state(TASK_TRACED); + current->jobctl |= JOBCTL_TRACED; /* * We're committing to trapping. TRACED should be visible before @@ -2436,6 +2441,7 @@ static bool do_signal_stop(int signr) if (task_participate_group_stop(current)) notify = CLD_STOPPED; + current->jobctl |= JOBCTL_STOPPED; set_special_state(TASK_STOPPED); spin_unlock_irq(¤t->sighand->siglock);