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BUG: workqueue lockup

Status: upstream: reported C repro on 2023/06/22 22:19
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+2499e5a71acdc2680959@syzkaller.appspotmail.com
First crash: 677d, last: 2h47m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (4)
Date Name Commit Repro Result
2023/09/06 android13-5.15-lts (ToT) 1317bd27a72f C [report] BUG: workqueue lockup
2023/06/23 lts (merge base) 8a7f2a5c5aa1 C Didn't crash
2023/06/23 upstream (ToT) 8a28a0b6f1a1 C [report] BUG: workqueue lockup
2023/09/06 upstream (ToT) 65d6e954e378 C Didn't crash
▶ ▼ Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block C 47 1785d 2192d 15/28 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream C 423 8h06m 576d 0/3 upstream: reported C repro on 2023/03/11 08:51
upstream BUG: workqueue lockup (2) C 406 2341d 2500d 5/28 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 586d 1988d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2522d 2533d 3/28 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) net C done 6568 6m 1727d 0/28 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 4084 1h42m 581d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2285d 2338d 8/28 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream C error 2036 41m 441d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 1850d 2006d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 580d 1994d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 980d 1078d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1774d 2006d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream C 201 16h48m 579d 0/3 upstream: reported C repro on 2023/03/07 17:51

Sample crash report:
RBP: 00007f6ebfa7e300 R08: 00007f6ebf9b56c0 R09: 00007f6ebf9b56c0
R10: 0000000000000000 R11: 0000000000000202 R12: 00007f6ebfa7e30c
R13: 0000000000000000 R14: 00007fff8eaaeba0 R15: 00007fff8eaaec88
 </TASK>
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 287s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 287s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 287s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: vmstat_shepherd, psi_avgs_work
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4
    pending: flush_memcg_stats_dwork, toggle_allocation_gate
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    pending: neigh_periodic_work, neigh_periodic_work, gc_worker, check_lifetime
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
workqueue writeback: flags=0x4a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wb_workfn
workqueue dm_bufio_cache: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: work_fn
workqueue ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work

Crashes (1716):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/07 00:21 android13-5.15-lts 80dd36dca275 d7906eff .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/06 21:39 android13-5.15-lts 80dd36dca275 d7906eff .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/17 09:09 android13-5.15-lts b92c0d35d015 c673ca06 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/17 02:34 android13-5.15-lts b92c0d35d015 c673ca06 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/23 09:59 android13-5.15-lts 85445b5a2107 edc5149a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/21 14:45 android13-5.15-lts 85445b5a2107 dac2aa43 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/20 19:34 android13-5.15-lts 85445b5a2107 dac2aa43 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/20 10:29 android13-5.15-lts 85445b5a2107 41b7e219 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/09 21:29 android13-5.15-lts 79bd336c7a94 82c05ab8 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/07 03:07 android13-5.15-lts 79bd336c7a94 121701b6 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/03 16:52 android13-5.15-lts 79bd336c7a94 0aba2352 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/03 08:21 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/03 00:13 android13-5.15-lts 424f92bcbe8f 3113787f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/02 09:53 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/02 07:10 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/01 12:39 android13-5.15-lts 424f92bcbe8f 3113787f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/01 08:25 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/01 05:18 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/29 15:33 android13-5.15-lts 424f92bcbe8f 34889ee3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/27 09:55 android13-5.15-lts 424f92bcbe8f a10a183e .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/26 22:29 android13-5.15-lts 424f92bcbe8f a10a183e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/25 00:21 android13-5.15-lts 424f92bcbe8f a10a183e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/05/23 20:05 android13-5.15-lts 5d96939590c0 4c2072ee .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/21 05:34 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/21 02:55 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/21 00:22 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/20 21:44 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/20 13:18 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/17 23:04 android13-5.15-lts 5d96939590c0 a12e99e7 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/17 02:21 android13-5.15-lts 5d96939590c0 c2e07261 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/16 10:02 android13-5.15-lts 5d96939590c0 ef5d53ed .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/14 15:13 android13-5.15-lts 5d96939590c0 fdb4c10c .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/14 11:49 android13-5.15-lts 5d96939590c0 fdb4c10c .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/13 09:06 android13-5.15-lts 5d96939590c0 9026e142 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/12 08:15 android13-5.15-lts 5d96939590c0 9026e142 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/11 05:02 android13-5.15-lts 5d96939590c0 f7c35481 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/06/22 22:07 android13-5.15-lts 565c3abfa129 79782afc .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/06 09:51 android13-5.15-lts 80dd36dca275 d7906eff .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/29 00:31 android13-5.15-lts 8e36931104ac ba29ff75 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/18 18:26 android13-5.15-lts b92c0d35d015 c673ca06 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/03 23:40 android13-5.15-lts 38761ec9fc9e 326f9c5a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/01 17:04 android13-5.15-lts 29d153aabd54 1eda0d14 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/23 04:22 android13-5.15-lts 85445b5a2107 edc5149a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/07 11:52 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/07 10:51 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/07 08:08 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/10/07 05:21 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/07 00:16 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/06 23:01 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/06 18:42 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/05 23:53 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/05 19:32 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/05 18:55 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/05 18:49 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/05 02:04 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/05 00:35 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/04 22:41 android13-5.15-lts 80dd36dca275 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/04 20:56 android13-5.15-lts bdff225da48e d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/04 14:42 android13-5.15-lts bdff225da48e d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/04 13:02 android13-5.15-lts bdff225da48e d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/04 09:06 android13-5.15-lts bdff225da48e d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/03 23:31 android13-5.15-lts a66ed446788c d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/03 20:27 android13-5.15-lts a66ed446788c d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/03 10:28 android13-5.15-lts d68227c9c16d a4c7fd36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/03 02:30 android13-5.15-lts 8e36931104ac a4c7fd36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/01 16:54 android13-5.15-lts 8e36931104ac ea2b66a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/01 11:21 android13-5.15-lts 8e36931104ac ea2b66a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/10/01 08:53 android13-5.15-lts 8e36931104ac bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/30 22:07 android13-5.15-lts 8e36931104ac bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/30 19:32 android13-5.15-lts 8e36931104ac bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/30 18:00 android13-5.15-lts 8e36931104ac bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/30 11:15 android13-5.15-lts 8e36931104ac ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/29 05:58 android13-5.15-lts 8e36931104ac ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/29 00:28 android13-5.15-lts 8e36931104ac ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/28 23:20 android13-5.15-lts 8e36931104ac ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/27 22:57 android13-5.15-lts 8e36931104ac 440b26ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/27 14:08 android13-5.15-lts b92c0d35d015 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/27 13:22 android13-5.15-lts b92c0d35d015 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/26 22:48 android13-5.15-lts b92c0d35d015 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/25 20:35 android13-5.15-lts b92c0d35d015 0d19f247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/25 09:47 android13-5.15-lts b92c0d35d015 349a68c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/25 05:40 android13-5.15-lts b92c0d35d015 5643e0e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/25 02:13 android13-5.15-lts b92c0d35d015 5643e0e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/24 13:59 android13-5.15-lts b92c0d35d015 5643e0e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/23 09:24 android13-5.15-lts b92c0d35d015 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/22 14:51 android13-5.15-lts b92c0d35d015 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/22 10:18 android13-5.15-lts b92c0d35d015 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/22 07:26 android13-5.15-lts b92c0d35d015 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/22 05:18 android13-5.15-lts b92c0d35d015 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/22 04:54 android13-5.15-lts b92c0d35d015 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/09/05 03:48 android13-5.15-lts 38761ec9fc9e dfbe2ed4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/05/20 09:13 android13-5.15-lts 19c0ed55a470 96689200 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2022/11/29 19:19 android13-5.15-lts d9d889009b78 579a3740 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
* Struck through repros no longer work on HEAD.