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WARNING: ODEBUG bug in del_timer

Status: upstream: reported C repro on 2019/04/13 05:07
Reported-by: syzbot+85eff29cdc3f3bbd82ae@syzkaller.appspotmail.com
First crash: 2064d, last: 1654d
Fix bisection the fix commit could be any of (bisect log):
  58b454ebf81e Linux 4.14.112
  4139fb08c05f Linux 4.14.187
   
▶ ▼ Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING: ODEBUG bug in del_timer (2) net s390 C 6 2395d 2396d 8/28 fixed on 2018/07/09 18:05
linux-4.19 WARNING: ODEBUG bug in del_timer 1 1954d 1954d 0/1 auto-closed as invalid on 2019/11/29 04:56
upstream WARNING: ODEBUG bug in del_timer (3) net syz error error 46 2027d 2040d 0/28 auto-obsoleted due to no activity on 2022/09/06 02:49
upstream WARNING: ODEBUG bug in del_timer net s390 C 200 2396d 2413d 5/28 fixed on 2018/05/16 09:57
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2022/12/28 00:31 12m retest repro linux-4.14.y report log
2022/08/31 15:27 11m retest repro linux-4.14.y report log
▶ ▼ Fix bisection attempts (7)
Created Duration User Patch Repo Result
2020/06/27 04:19 29m (3) bisect fix linux-4.14.y OK (2) job log
2020/05/28 01:27 22m bisect fix linux-4.14.y OK (0) job log log
2020/04/28 01:03 23m bisect fix linux-4.14.y OK (0) job log log
2020/03/29 00:40 22m bisect fix linux-4.14.y OK (0) job log log
2020/02/27 23:39 25m bisect fix linux-4.14.y OK (0) job log log
2020/01/28 22:45 27m bisect fix linux-4.14.y OK (0) job log log
2019/12/29 22:22 23m bisect fix linux-4.14.y OK (0) job log log

Sample crash report:
audit: type=1400 audit(1555490930.863:36): avc:  denied  { map } for  pid=6933 comm="syz-executor597" path="/root/syz-executor597558006" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0xffff8880a04e5030
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5 at lib/debugobjects.c:287 debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.112 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: tipc_send tipc_send_work
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x19c lib/dump_stack.c:53
 panic+0x1f2/0x438 kernel/panic.c:182
 __warn.cold+0x2f/0x34 kernel/panic.c:546
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:944
RIP: 0010:debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
RSP: 0018:ffff8880a9cd79d8 EFLAGS: 00010286
RAX: 0000000000000063 RBX: 0000000000000005 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff866d0860 RDI: ffffed101539af31
RBP: ffff8880a9cd7a00 R08: 0000000000000063 R09: ffff8880a9cc2a30
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff866cba60
R13: ffff8880a04e5030 R14: 0000000000000000 R15: ffff8880a04e5018
 debug_object_assert_init lib/debugobjects.c:656 [inline]
 debug_object_assert_init+0x232/0x300 lib/debugobjects.c:627
 debug_timer_assert_init kernel/time/timer.c:707 [inline]
 debug_assert_init kernel/time/timer.c:755 [inline]
 del_timer+0x67/0xf0 kernel/time/timer.c:1150
 tipc_subscrb_subscrp_delete+0x16a/0x3a0 net/tipc/subscr.c:207
 tipc_subscrb_delete net/tipc/subscr.c:238 [inline]
 tipc_subscrb_release_cb+0x18/0x30 net/tipc/subscr.c:316
 tipc_close_conn+0x179/0x210 net/tipc/server.c:203
 tipc_send_to_sock net/tipc/server.c:538 [inline]
 tipc_send_work+0x470/0x5a0 net/tipc/server.c:564
 process_one_work+0x868/0x1610 kernel/workqueue.c:2114
 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
 kthread+0x31c/0x430 kernel/kthread.c:232
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (74):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/04/17 08:54 linux-4.14.y 58b454ebf81e b0e8efcb .config console log report syz C ci2-linux-4-14
2019/11/29 22:16 linux-4.14.y 43598c571e7e 4f7e1d0f .config console log report ci2-linux-4-14
2019/11/29 16:16 linux-4.14.y 43598c571e7e 4f7e1d0f .config console log report ci2-linux-4-14
2019/11/29 02:29 linux-4.14.y 43598c571e7e 76357d6f .config console log report ci2-linux-4-14
2019/11/27 07:29 linux-4.14.y 43598c571e7e 1048481f .config console log report ci2-linux-4-14
2019/11/25 01:00 linux-4.14.y 43598c571e7e 598ca6c8 .config console log report ci2-linux-4-14
2019/11/22 22:20 linux-4.14.y f56f3d0e65ad 598ca6c8 .config console log report ci2-linux-4-14
2019/11/16 07:12 linux-4.14.y 775d01b65b5d cdac920b .config console log report ci2-linux-4-14
2019/11/14 13:52 linux-4.14.y 775d01b65b5d 048f2d49 .config console log report ci2-linux-4-14
2019/11/12 16:00 linux-4.14.y 4762bcd451a9 048f2d49 .config console log report ci2-linux-4-14
2019/11/10 01:31 linux-4.14.y c9fda4f22428 dc438b91 .config console log report ci2-linux-4-14
2019/11/08 20:12 linux-4.14.y c9fda4f22428 1e35461e .config console log report ci2-linux-4-14
2019/11/08 11:13 linux-4.14.y c9fda4f22428 1e35461e .config console log report ci2-linux-4-14
2019/11/07 03:03 linux-4.14.y c9fda4f22428 d797d201 .config console log report ci2-linux-4-14
2019/11/05 03:27 linux-4.14.y ddef1e8e3f6e 76630fc9 .config console log report ci2-linux-4-14
2019/11/04 15:31 linux-4.14.y ddef1e8e3f6e 18e12644 .config console log report ci2-linux-4-14
2019/10/31 21:57 linux-4.14.y ddef1e8e3f6e a41ca8fa .config console log report ci2-linux-4-14
2019/10/29 10:25 linux-4.14.y ddef1e8e3f6e 5ea87a66 .config console log report ci2-linux-4-14
2019/10/23 19:25 linux-4.14.y b98aebd29824 b602d64b .config console log report ci2-linux-4-14
2019/10/22 19:29 linux-4.14.y b98aebd29824 4ee855e7 .config console log report ci2-linux-4-14
2019/10/22 15:14 linux-4.14.y b98aebd29824 4ee855e7 .config console log report ci2-linux-4-14
2019/10/19 15:11 linux-4.14.y b98aebd29824 8c88c9c1 .config console log report ci2-linux-4-14
2019/10/17 07:21 linux-4.14.y e132c8d7b58d 8c88c9c1 .config console log report ci2-linux-4-14
2019/10/13 19:32 linux-4.14.y e132c8d7b58d 2f661ec4 .config console log report ci2-linux-4-14
2019/10/13 04:38 linux-4.14.y e132c8d7b58d 426631dd .config console log report ci2-linux-4-14
2019/10/09 09:30 linux-4.14.y 42327896f194 312c6a5a .config console log report ci2-linux-4-14
2019/10/07 08:16 linux-4.14.y db1892238c55 28ac6e64 .config console log report ci2-linux-4-14
2019/10/05 17:06 linux-4.14.y db1892238c55 f3f7d9c8 .config console log report ci2-linux-4-14
2019/10/04 23:31 linux-4.14.y f6e27dbb1afa c86336cf .config console log report ci2-linux-4-14
2019/10/03 15:44 linux-4.14.y f6e27dbb1afa fc17ba49 .config console log report ci2-linux-4-14
2019/10/03 14:38 linux-4.14.y f6e27dbb1afa fc17ba49 .config console log report ci2-linux-4-14
2019/10/02 11:35 linux-4.14.y f6e27dbb1afa 2e29b534 .config console log report ci2-linux-4-14
2019/09/30 04:23 linux-4.14.y f6e27dbb1afa c1ad5441 .config console log report ci2-linux-4-14
2019/09/28 00:25 linux-4.14.y f6e27dbb1afa d8074e0b .config console log report ci2-linux-4-14
2019/09/27 16:48 linux-4.14.y f6e27dbb1afa d8074e0b .config console log report ci2-linux-4-14
2019/09/26 16:35 linux-4.14.y f6e27dbb1afa 24d405a3 .config console log report ci2-linux-4-14
2019/09/20 04:18 linux-4.14.y b10ab5e2c476 4d3ae0b7 .config console log report ci2-linux-4-14
2019/09/18 09:07 linux-4.14.y 968722f5371a 03e0d245 .config console log report ci2-linux-4-14
2019/09/10 12:28 linux-4.14.y e2cd24b62938 a60cb4cd .config console log report ci2-linux-4-14
2019/09/07 18:51 linux-4.14.y 414510bc00a5 a60cb4cd .config console log report ci2-linux-4-14
2019/09/04 15:47 linux-4.14.y 01fd1694b93c d994512d .config console log report ci2-linux-4-14
2019/08/27 02:07 linux-4.14.y b5260801526c d21c5d9d .config console log report ci2-linux-4-14
2019/08/26 22:56 linux-4.14.y b5260801526c d21c5d9d .config console log report ci2-linux-4-14
2019/08/26 21:19 linux-4.14.y b5260801526c d21c5d9d .config console log report ci2-linux-4-14
2019/08/13 14:08 linux-4.14.y 3ffe1e79c174 74d61399 .config console log report ci2-linux-4-14
2019/07/29 14:13 linux-4.14.y ff33472c282e f67095ee .config console log report ci2-linux-4-14
2019/07/27 14:40 linux-4.14.y ff33472c282e c85e1c5b .config console log report ci2-linux-4-14
2019/07/27 06:02 linux-4.14.y ff33472c282e c85e1c5b .config console log report ci2-linux-4-14
2019/06/27 17:54 linux-4.14.y f4cc0ed9b2c7 7509bf36 .config console log report ci2-linux-4-14
2019/05/12 06:08 linux-4.14.y d929572d7da9 c017728b .config console log report ci2-linux-4-14
2019/05/10 22:50 linux-4.14.y d929572d7da9 46caad94 .config console log report ci2-linux-4-14
2019/05/07 19:46 linux-4.14.y 6d1510d86ef6 a7383bfa .config console log report ci2-linux-4-14
2019/05/02 08:25 linux-4.14.y 1c046f373132 1852eb18 .config console log report ci2-linux-4-14
2019/04/30 19:06 linux-4.14.y fa5941f45d7e 618456b4 .config console log report ci2-linux-4-14
2019/04/28 15:45 linux-4.14.y fa5941f45d7e b617407b .config console log report ci2-linux-4-14
2019/04/28 13:20 linux-4.14.y fa5941f45d7e b617407b .config console log report ci2-linux-4-14
2019/04/28 12:05 linux-4.14.y fa5941f45d7e b617407b .config console log report ci2-linux-4-14
2019/04/28 03:55 linux-4.14.y fa5941f45d7e b617407b .config console log report ci2-linux-4-14
2019/04/28 02:43 linux-4.14.y fa5941f45d7e b617407b .config console log report ci2-linux-4-14
2019/04/26 18:31 linux-4.14.y 68d7a45eec10 b617407b .config console log report ci2-linux-4-14
2019/04/26 14:48 linux-4.14.y 68d7a45eec10 b617407b .config console log report ci2-linux-4-14
2019/04/25 09:44 linux-4.14.y 68d7a45eec10 8e3c52b1 .config console log report ci2-linux-4-14
2019/04/24 02:26 linux-4.14.y 68d7a45eec10 2398edea .config console log report ci2-linux-4-14
2019/04/22 09:07 linux-4.14.y 68d7a45eec10 0a77c33c .config console log report ci2-linux-4-14
2019/04/21 22:26 linux-4.14.y 68d7a45eec10 b0e8efcb .config console log report ci2-linux-4-14
2019/04/20 21:13 linux-4.14.y 68d7a45eec10 b0e8efcb .config console log report ci2-linux-4-14
2019/04/18 17:45 linux-4.14.y 58b454ebf81e b0e8efcb .config console log report ci2-linux-4-14
2019/04/17 07:23 linux-4.14.y 58b454ebf81e b0e8efcb .config console log report ci2-linux-4-14
2019/04/15 04:17 linux-4.14.y 1ec8f1f0bffe 505ab413 .config console log report ci2-linux-4-14
2019/04/14 22:15 linux-4.14.y 1ec8f1f0bffe 505ab413 .config console log report ci2-linux-4-14
2019/04/13 13:31 linux-4.14.y 1ec8f1f0bffe c402d8f1 .config console log report ci2-linux-4-14
2019/04/13 04:07 linux-4.14.y 1ec8f1f0bffe c402d8f1 .config console log report ci2-linux-4-14
* Struck through repros no longer work on HEAD.