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WARNING: locking bug in l2cap_sock_teardown_cb

Status: auto-closed as invalid on 2022/02/21 20:37
Subsystems: bluetooth
[Documentation on labels]
Reported-by: syzbot+9cde9e1af823debba3b2@syzkaller.appspotmail.com
First crash: 1215d, last: 914d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
WARNING: locking bug in l2cap_sock_teardown_cb 0 (1) 2021/01/05 11:03
▶ ▼ Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING: locking bug in l2cap_sock_teardown_cb 2 1099d 1138d 0/1 auto-closed as invalid on 2021/08/20 21:06
linux-4.19 WARNING: locking bug in l2cap_sock_teardown_cb 2 1179d 1203d 0/1 auto-closed as invalid on 2021/06/02 08:55
linux-4.19 WARNING: locking bug in l2cap_sock_teardown_cb (3) 1 680d 680d 0/1 auto-obsoleted due to no activity on 2022/10/13 18:01
linux-4.19 WARNING: locking bug in l2cap_sock_teardown_cb (2) 1 957d 957d 0/1 auto-closed as invalid on 2022/01/09 17:11

Sample crash report:
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 1 PID: 8498 at kernel/locking/lockdep.c:203 hlock_class kernel/locking/lockdep.c:203 [inline]
WARNING: CPU: 1 PID: 8498 at kernel/locking/lockdep.c:203 hlock_class kernel/locking/lockdep.c:192 [inline]
WARNING: CPU: 1 PID: 8498 at kernel/locking/lockdep.c:203 check_wait_context kernel/locking/lockdep.c:4688 [inline]
WARNING: CPU: 1 PID: 8498 at kernel/locking/lockdep.c:203 __lock_acquire+0x1344/0x54a0 kernel/locking/lockdep.c:4965
Modules linked in:
CPU: 1 PID: 8498 Comm: kworker/1:6 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events l2cap_chan_timeout
RIP: 0010:hlock_class kernel/locking/lockdep.c:203 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:192 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4688 [inline]
RIP: 0010:__lock_acquire+0x1344/0x54a0 kernel/locking/lockdep.c:4965
Code: 08 84 d2 0f 85 f1 3d 00 00 8b 05 9f 53 13 0c 85 c0 0f 85 f4 fd ff ff 48 c7 c6 60 f1 8b 89 48 c7 c7 20 e5 8b 89 e8 d2 98 98 07 <0f> 0b 31 ed e9 b7 f0 ff ff e8 6e 5d 7c 02 85 c0 0f 84 12 fe ff ff
RSP: 0018:ffffc90016f67920 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff888089830120 RCX: 0000000000000000
RDX: ffff888089dc42c0 RSI: ffffffff815dcf48 RDI: fffff52002decf16
RBP: 00000000000019a8 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815d6cbe R11: 0000000000000000 R12: ffff888089dc4d80
R13: ffff888089dc42c0 R14: 0000000000040000 R15: 00000000000419a8
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f884fe938dc CR3: 000000003f3b3000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire kernel/locking/lockdep.c:5625 [inline]
 lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590
 lock_sock_nested+0x2f/0xf0 net/core/sock.c:3203
 l2cap_sock_teardown_cb+0xa1/0x660 net/bluetooth/l2cap_sock.c:1528
 l2cap_chan_del+0xbc/0xa80 net/bluetooth/l2cap_core.c:622
 l2cap_chan_close+0x1b9/0xaf0 net/bluetooth/l2cap_core.c:825
 l2cap_chan_timeout+0x17e/0x2f0 net/bluetooth/l2cap_core.c:436
 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Crashes (129):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/10/24 20:36 upstream 6c62666d8879 282f03fb .config console log report info ci-upstream-kasan-gce-selinux-root WARNING: locking bug in l2cap_sock_teardown_cb
2021/10/14 17:26 upstream 26d657410983 5462d470 .config console log report info ci-upstream-kasan-gce-root WARNING: locking bug in l2cap_sock_teardown_cb
2021/08/16 03:42 upstream 7c60610d4767 2489ab88 .config console log report info ci-upstream-kasan-gce-selinux-root WARNING: locking bug in l2cap_sock_teardown_cb
2021/08/13 13:44 upstream f8e6dfc64f61 3fd2ea69 .config console log report info ci-upstream-kasan-gce-selinux-root WARNING: locking bug in l2cap_sock_teardown_cb
2021/05/26 23:03 upstream 7ac3a1c1ae51 858ea628 .config console log report info ci-qemu-upstream WARNING: locking bug in l2cap_sock_teardown_cb
2021/04/22 09:41 upstream 16fc44d6387e 33c28d03 .config console log report info ci-qemu-upstream WARNING: locking bug in l2cap_sock_teardown_cb
2021/04/16 10:33 upstream 7e25f40eab52 c59079a6 .config console log report info ci-upstream-kasan-gce-root WARNING: locking bug in l2cap_sock_teardown_cb
2021/02/01 07:00 upstream 1048ba83fb1c fc9fd31e .config console log report info ci-upstream-kasan-gce-smack-root WARNING: locking bug in l2cap_sock_teardown_cb
2021/10/23 03:37 upstream 5ab2ed0a8d75 282f03fb .config console log report info ci-qemu-upstream-386 WARNING: locking bug in l2cap_sock_teardown_cb
2021/07/30 04:36 upstream 7e96bf476270 c585c7b0 .config console log report info ci-qemu-upstream-386 WARNING: locking bug in l2cap_sock_teardown_cb
2021/07/16 23:21 upstream d936eb238744 f115ae98 .config console log report info ci-qemu-upstream-386 WARNING: locking bug in l2cap_sock_teardown_cb
2021/04/14 12:04 upstream 50987beca096 3134b37f .config console log report info ci-qemu-upstream-386 WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/20 03:58 upstream d626c692aaeb 3d01c4de .config console log report info ci-qemu-upstream-386 WARNING: locking bug in l2cap_sock_teardown_cb
2021/10/05 15:50 net-old a56d447f196f 0a63fd36 .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/08/30 19:55 net-old 57f780f1c433 8f58a0ef .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/08/17 04:31 net-old 09e856d54bda 33c26cb7 .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/07/09 16:51 net-old 2b452550a203 281e815f .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/06/28 21:01 net-old 3f2db250099f 9d2ab5df .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/06/06 13:17 net-old 3822d0670c9d 500c2339 .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/05/12 19:10 net-old 440c3247cba3 da958a4d .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/05/06 02:12 net-old bbd6f0a94813 06c27ff5 .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/05/03 00:35 net-old bbd6f0a94813 77e2b668 .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/04/30 22:08 net-old bbd6f0a94813 77e2b668 .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/04/19 08:26 net-old 88a5af943985 7e2b734b .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/04/18 04:10 net-old 88a5af943985 7e2b734b .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/04/10 18:35 net-old 4e04e7513b0f bfeda1b1 .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/04/08 11:24 net-old 8a12f8836145 6a81331a .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/30 17:05 net-old 6e5a03bcba44 6a81331a .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/29 07:32 net-old 1b479fb80160 a8529b82 .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/27 21:03 net-old 75887e881b19 a8529b82 .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/21 10:33 net-old 87d77e59d1eb 17810eae .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/15 07:11 net-old 6577b9a551ae cc1cff8f .config console log report info ci-upstream-net-this-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/09/20 08:52 net-next-old 14e94f9445a9 70b76c1d .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/09/10 11:40 net-next-old 626bf91a292e 5ae8508a .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/08/31 10:44 net-next-old ca49bfd90a9d 8f58a0ef .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/08/22 23:41 net-next-old 8d63ee602da3 b599f2fc .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/08/20 22:47 net-next-old f444fea7896d b599f2fc .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/08/01 12:50 net-next-old 3e12361b6d23 6c236867 .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/07/19 17:03 net-next-old 0d6835ffe50c e6a17580 .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/07/15 02:57 net-next-old 5e437416ff66 94e0b707 .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/07/10 15:46 net-next-old 5e437416ff66 8f5a7b8c .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/06/23 02:19 net-next-old ef2c3ddaa4ed aba2b2fb .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/06/04 10:48 net-next-old b596ce68fd4a 0740de69 .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/06/02 11:30 net-next-old 5fe8e519e44f 0740de69 .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/05/19 05:46 net-next-old 86544c3de6a2 a343ba6b .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/05/17 20:33 net-next-old 77091933e453 a2eb125d .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/05/14 07:20 net-next-old ea89c862f01e 8bdd5343 .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/05/11 10:26 net-next-old 48de7c0c1c92 ca873091 .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/05/05 16:04 net-next-old 95aafe911db6 06c27ff5 .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/04/07 23:24 net-next-old 0b35e0deb5be 6a81331a .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/30 16:02 net-next-old 37f368d8d09d 6a81331a .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/24 19:24 net-next-old 5aa3afe107d9 607e3baf .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/22 22:15 net-next-old 227d72063fcc 8092f30d .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/03/22 19:51 net-next-old a1e6f641e307 8092f30d .config console log report info ci-upstream-net-kasan-gce WARNING: locking bug in l2cap_sock_teardown_cb
2021/07/06 15:22 linux-next d72e63193059 6c4484eb .config console log report info ci-upstream-linux-next-kasan-gce-root WARNING: locking bug in l2cap_sock_teardown_cb
2021/07/05 10:49 linux-next a1f92694393a 55aa55c2 .config console log report info ci-upstream-linux-next-kasan-gce-root WARNING: locking bug in l2cap_sock_teardown_cb
2021/06/10 02:36 linux-next a1f92694393a 1ba81399 .config console log report info ci-upstream-linux-next-kasan-gce-root WARNING: locking bug in l2cap_sock_teardown_cb
2020/12/30 13:54 upstream 139711f033f6 ecb8c012 .config console log report info ci-qemu-upstream
2020/12/28 05:14 upstream 5c8fe583cce5 2242f77f .config console log report info ci-qemu-upstream
2021/01/10 19:25 net-next-old 73b7a6047971 2c1f2513 .config console log report info ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.