diff mbox series

[v2] Bluetooth: virtio_bt: Use skb_put to set length

Message ID 20220727070541.6450-1-soenke.huster@eknoes.de (mailing list archive)
State New, archived
Headers show
Series [v2] Bluetooth: virtio_bt: Use skb_put to set length | expand

Checks

Context Check Description
tedd_an/pre-ci_am success Success
tedd_an/checkpatch success Checkpatch PASS
tedd_an/gitlint success Gitlint PASS
tedd_an/subjectprefix success PASS
tedd_an/buildkernel success Build Kernel PASS
tedd_an/buildkernel32 success Build Kernel32 PASS
tedd_an/incremental_build success Pass
tedd_an/testrunnersetup success Test Runner Setup PASS
tedd_an/testrunnerl2cap-tester success Total: 40, Passed: 40 (100.0%), Failed: 0, Not Run: 0
tedd_an/testrunnerbnep-tester success Total: 1, Passed: 1 (100.0%), Failed: 0, Not Run: 0
tedd_an/testrunnermgmt-tester success Total: 494, Passed: 494 (100.0%), Failed: 0, Not Run: 0
tedd_an/testrunnerrfcomm-tester success Total: 10, Passed: 10 (100.0%), Failed: 0, Not Run: 0
tedd_an/testrunnersco-tester success Total: 12, Passed: 12 (100.0%), Failed: 0, Not Run: 0
tedd_an/testrunnersmp-tester success Total: 8, Passed: 8 (100.0%), Failed: 0, Not Run: 0
tedd_an/testrunneruserchan-tester success Total: 4, Passed: 4 (100.0%), Failed: 0, Not Run: 0

Commit Message

Soenke Huster July 27, 2022, 7:05 a.m. UTC
By using skb_put we ensure that skb->tail is set
correctly. Currently, skb->tail is always zero, which
leads to errors, such as the following page fault in
rfcomm_recv_frame:

    BUG: unable to handle page fault for address: ffffed1021de29ff
    #PF: supervisor read access in kernel mode
    #PF: error_code(0x0000) - not-present page
    RIP: 0010:rfcomm_run+0x831/0x4040 (net/bluetooth/rfcomm/core.c:1751)

Fixes: afd2daa26c7a ("Bluetooth: Add support for virtio transport driver")
Signed-off-by: Soenke Huster <soenke.huster@eknoes.de>
---
v2: Add Fixes tag
 drivers/bluetooth/virtio_bt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

bluez.test.bot@gmail.com July 27, 2022, 8:05 a.m. UTC | #1
This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=663357

---Test result---

Test Summary:
CheckPatch                    PASS      1.39 seconds
GitLint                       PASS      0.69 seconds
SubjectPrefix                 PASS      0.52 seconds
BuildKernel                   PASS      33.52 seconds
BuildKernel32                 PASS      28.96 seconds
Incremental Build with patchesPASS      41.43 seconds
TestRunner: Setup             PASS      487.36 seconds
TestRunner: l2cap-tester      PASS      17.07 seconds
TestRunner: bnep-tester       PASS      6.20 seconds
TestRunner: mgmt-tester       PASS      99.23 seconds
TestRunner: rfcomm-tester     PASS      9.42 seconds
TestRunner: sco-tester        PASS      9.27 seconds
TestRunner: smp-tester        PASS      9.29 seconds
TestRunner: userchan-tester   PASS      6.31 seconds



---
Regards,
Linux Bluetooth
diff mbox series

Patch

diff --git a/drivers/bluetooth/virtio_bt.c b/drivers/bluetooth/virtio_bt.c
index 67c21263f9e0..fd281d439505 100644
--- a/drivers/bluetooth/virtio_bt.c
+++ b/drivers/bluetooth/virtio_bt.c
@@ -219,7 +219,7 @@  static void virtbt_rx_work(struct work_struct *work)
 	if (!skb)
 		return;
 
-	skb->len = len;
+	skb_put(skb, len);
 	virtbt_rx_handle(vbt, skb);
 
 	if (virtbt_add_inbuf(vbt) < 0)