syzbot


WARNING: locking bug in try_to_wake_up (2)

Status: auto-obsoleted due to no activity on 2025/08/21 02:28
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+6ac735cc9f9ce6ec2f74@syzkaller.appspotmail.com
First crash: 288d, last: 77d
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [net?] WARNING: locking bug in try_to_wake_up (2) 0 (2) 2024/11/23 13:32
Similar bugs (11)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING: locking bug in try_to_wake_up kernel 19 C error 157 289d 469d 28/29 fixed on 2024/11/12 23:31
linux-5.15 KASAN: use-after-free Read in try_to_wake_up 19 C done 71 342d 798d 3/3 fixed on 2024/10/21 12:01
linux-4.14 KASAN: use-after-free Read in try_to_wake_up nilfs2 19 C 8 911d 1032d 0/1 upstream: reported C repro on 2022/10/30 09:08
upstream general protection fault in try_to_wake_up (2) io-uring 19 C done done 3588 405d 1643d 0/29 closed as invalid on 2024/07/25 16:29
linux-4.14 general protection fault in try_to_wake_up 2 C done 707 1594d 1624d 1/1 fixed on 2021/05/17 08:49
upstream KASAN: use-after-free Read in try_to_wake_up fs 19 C unreliable 82 1644d 1644d 0/29 closed as invalid on 2021/02/25 16:53
linux-6.1 KASAN: use-after-free Read in try_to_wake_up origin:upstream missing-backport 19 C done 44 446d 878d 3/3 fixed on 2024/07/22 09:08
linux-5.15 KASAN: use-after-free Read in try_to_wake_up (2) 19 3 232d 264d 0/3 auto-obsoleted due to no activity on 2025/04/18 01:07
linux-4.19 general protection fault in try_to_wake_up 2 syz done 229 1536d 1624d 1/1 fixed on 2021/07/14 00:01
upstream BUG: unable to handle kernel paging request in try_to_wake_up (2) net 19 C error 31 189d 275d 28/29 fixed on 2025/05/06 15:33
linux-6.1 KASAN: use-after-free Read in try_to_wake_up (2) 19 2 356d 388d 0/3 auto-obsoleted due to no activity on 2024/12/14 10:22
Last patch testing requests (4)
Created Duration User Patch Repo Result
2025/07/28 19:41 22m retest repro upstream OK log
2025/06/26 04:52 22m retest repro upstream OK log
2025/04/08 08:39 20m retest repro upstream report log
2025/04/08 08:39 27m retest repro upstream report log
Cause bisection attempts (2)
Created Duration User Patch Repo Result
2024/12/22 04:05 23m bisect upstream error job log
2024/11/24 16:56 22m bisect upstream error job log
marked invalid by nogikh@google.com

Sample crash report:
=============================
[ BUG: Invalid wait context ]
6.14.0-syzkaller #0 Not tainted
-----------------------------
kworker/u8:1/11143 is trying to lock:
ffff8880b863e958 (&tbl->lock){+.-.}-{3:3}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
other info that might help us debug this:
context-{5:5}
2 locks held by kworker/u8:1/11143:
 #0: ffff88801b098018 (&pool->lock){-.-.}-{2:2}, at: worker_thread+0xa38/0xd30 kernel/workqueue.c:3353
 #1: ffff88801cece428 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
 #1: ffff88801cece428 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xc2/0x1470 kernel/sched/core.c:4214
stack backtrace:
CPU: 0 UID: 0 PID: 11143 Comm: kworker/u8:1 Not tainted 6.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound toggle_allocation_gate
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4828 [inline]
 check_wait_context kernel/locking/lockdep.c:4900 [inline]
 __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5178
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
 raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
 rq_lock kernel/sched/sched.h:1852 [inline]
 ttwu_queue kernel/sched/core.c:4000 [inline]
 try_to_wake_up+0x7e2/0x1470 kernel/sched/core.c:4330
 kick_pool+0x45c/0x620 kernel/workqueue.c:1279
 process_one_work kernel/workqueue.c:3196 [inline]
 process_scheduled_works+0x7ad/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd30 kernel/workqueue.c:3400
 kthread+0x7ab/0x920 kernel/kthread.c:464
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
==================================================================
BUG: KASAN: wild-memory-access in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: wild-memory-access in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: wild-memory-access in __lock_acquire+0xc94/0x2100 kernel/locking/lockdep.c:5198
Read of size 8 at addr 1fffffff8b706080 by task kworker/u8:1/11143

CPU: 0 UID: 0 PID: 11143 Comm: kworker/u8:1 Not tainted 6.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound toggle_allocation_gate
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_report+0xe3/0x5b0 mm/kasan/report.c:524
 kasan_report+0x143/0x180 mm/kasan/report.c:634
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 __lock_acquire+0xc94/0x2100 kernel/locking/lockdep.c:5198
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
 raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
 rq_lock kernel/sched/sched.h:1852 [inline]
 ttwu_queue kernel/sched/core.c:4000 [inline]
 try_to_wake_up+0x7e2/0x1470 kernel/sched/core.c:4330
 kick_pool+0x45c/0x620 kernel/workqueue.c:1279
 process_one_work kernel/workqueue.c:3196 [inline]
 process_scheduled_works+0x7ad/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd30 kernel/workqueue.c:3400
 kthread+0x7ab/0x920 kernel/kthread.c:464
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
==================================================================

Crashes (154):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/24 22:41 upstream 38fec10eb60d 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/21 05:51 upstream 5fc319360819 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/21 03:30 upstream 5fc319360819 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/21 00:12 upstream 5fc319360819 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/18 18:19 upstream fc444ada1310 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/16 21:50 upstream cb82ca153949 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/16 10:17 upstream 31d7109a19f6 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/15 22:08 upstream 3571e8b091f4 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/14 16:55 upstream 695caca9345a e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/12 02:56 upstream 0b46b049d6ec f2eee6b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/11 23:00 upstream 0b46b049d6ec f2eee6b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/10 02:38 upstream 1110ce6a1e34 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/07 18:24 upstream 00a7d39898c8 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/03 12:15 upstream 7eb172143d55 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/03/01 06:58 upstream 7a5668899f54 1e7a43e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/28 21:49 upstream 76544811c850 1e7a43e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/28 19:44 upstream 76544811c850 1e7a43e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/27 18:49 upstream dd83757f6e68 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/27 17:39 upstream dd83757f6e68 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/25 05:07 upstream d082ecbc71e9 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/24 04:26 upstream d082ecbc71e9 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/23 06:11 upstream 5cf80612d3f7 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/19 02:59 upstream 6537cfb395f3 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/16 08:34 upstream 496659003dac 40a34ec9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/13 17:11 upstream 4dc1d1bec898 2afad16e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/13 02:53 upstream 4dc1d1bec898 b27c2402 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/09 04:51 upstream 595ab66f1bec ef44b750 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/08 03:00 upstream 7ee983c850b4 a4f327c2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/06 15:52 upstream 92514ef226f5 577d049b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/05 23:25 upstream 92514ef226f5 577d049b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/04 09:39 upstream 0de63bb7d919 8f267cef .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/02 06:53 upstream 69e858e0b8b2 0dff8567 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/01 20:23 upstream 69e858e0b8b2 0dff8567 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/02/01 07:39 upstream 69e858e0b8b2 aa47157c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/31 21:52 upstream 69e858e0b8b2 aa47157c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/31 18:40 upstream 69e858e0b8b2 aa47157c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/31 14:50 upstream 69e858e0b8b2 4c6ac32f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/30 17:25 upstream 9c5968db9e62 9c8ab845 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/30 09:35 upstream 9c5968db9e62 afe4eff5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/28 18:02 upstream 9c5968db9e62 f5427d7c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/27 21:00 upstream 9c5968db9e62 18070896 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/27 14:02 upstream 9c5968db9e62 9fbd772e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/25 13:26 upstream 0afd22092df4 9fbd772e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/25 11:33 upstream 0afd22092df4 9fbd772e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/01/06 07:31 upstream ab75170520d4 f3558dbf .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2024/11/23 13:31 upstream 06afb0f36106 68da6d95 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2024/11/16 20:12 upstream e8bdb3c8be08 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2024/11/13 07:14 upstream 3022e9d00ebe 62026c85 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in try_to_wake_up
2025/06/12 02:27 upstream 488ef3560196 98683f8f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING: locking bug in try_to_wake_up
2025/02/05 09:19 upstream 5c8c229261f1 5896748e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING: locking bug in try_to_wake_up
* Struck through repros no longer work on HEAD.