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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: 857d, last: 15h46m
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 1964d 2371d 15/28 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream missing-backport C done 529 2d00h 755d 0/3 upstream: reported C repro on 2023/03/11 08:51
upstream BUG: workqueue lockup (2) C 406 2521d 2679d 5/28 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 765d 2167d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2701d 2712d 3/28 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) wireguard C done 11829 39m 1906d 0/28 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 6407 16m 760d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2465d 2517d 8/28 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream missing-backport C error 3043 4h34m 621d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 2030d 2185d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 759d 2174d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 1159d 1258d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1954d 2185d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport C unreliable 254 1d07h 759d 0/3 upstream: reported C repro on 2023/03/07 17:51

Sample crash report:
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 154s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: psi_avgs_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_shepherd
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4
    pending: toggle_allocation_gate, flush_memcg_stats_dwork
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, check_lifetime, neigh_periodic_work, gc_worker
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 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work

Crashes (2610):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/24 12:36 android13-5.15-lts 7d1f9b5c2ff5 875573af .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/21 15:00 android13-5.15-lts 7d1f9b5c2ff5 62330552 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/20 18:55 android13-5.15-lts 7d1f9b5c2ff5 9209bc22 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/17 00:01 android13-5.15-lts 7d1f9b5c2ff5 e2826670 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/12 05:46 android13-5.15-lts 7d1f9b5c2ff5 ee70e6db .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/11 19:04 android13-5.15-lts 7d1f9b5c2ff5 16256247 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/11 12:13 android13-5.15-lts 7d1f9b5c2ff5 16256247 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/06 23:43 android13-5.15-lts 7d1f9b5c2ff5 831e3629 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/01 02:24 android13-5.15-lts 7d1f9b5c2ff5 67cf5345 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/28 05:24 android13-5.15-lts 7d1f9b5c2ff5 6a8fcbc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/27 23:45 android13-5.15-lts 7d1f9b5c2ff5 6a8fcbc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/27 21:39 android13-5.15-lts 7d1f9b5c2ff5 6a8fcbc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/24 03:55 android13-5.15-lts 7d1f9b5c2ff5 d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/24 01:27 android13-5.15-lts 7d1f9b5c2ff5 d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/23 13:28 android13-5.15-lts 7d1f9b5c2ff5 d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/20 16:45 android13-5.15-lts 058abb720bd1 50668798 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/11 14:28 android13-5.15-lts 058abb720bd1 43f51a00 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/09 14:32 android13-5.15-lts 058abb720bd1 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/08 07:32 android13-5.15-lts e8fb5110ac05 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/08 05:21 android13-5.15-lts e8fb5110ac05 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/04 08:37 android13-5.15-lts d1a25a6a4b3b 8f267cef .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/01 10:17 android13-5.15-lts d1a25a6a4b3b aa47157c .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/31 00:27 android13-5.15-lts d1a25a6a4b3b 4c6ac32f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/28 10:01 android13-5.15-lts d1a25a6a4b3b 18070896 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/26 19:52 android13-5.15-lts 829d9f138569 9fbd772e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/26 17:05 android13-5.15-lts 829d9f138569 9fbd772e .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/26 12:36 android13-5.15-lts 829d9f138569 9fbd772e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/26 08:45 android13-5.15-lts 829d9f138569 9fbd772e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/24 02:29 android13-5.15-lts 829d9f138569 521b0ce3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/23 06:58 android13-5.15-lts 829d9f138569 a44b0418 .config console log report syz / log 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
2025/04/01 09:56 android13-5.15-lts 5e1b899f19c3 36d76a97 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/04 19:42 android13-5.15-lts 7d1f9b5c2ff5 c3901742 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/04 17:34 android13-5.15-lts 7d1f9b5c2ff5 c3901742 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/22 08:15 android13-5.15-lts 058abb720bd1 d34966d1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/11 02:49 android13-5.15-lts 058abb720bd1 43f51a00 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/05 04:12 android13-5.15-lts d1a25a6a4b3b 5896748e .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/02/01 00:35 android13-5.15-lts d1a25a6a4b3b aa47157c .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/27 16:54 android13-5.15-lts d1a25a6a4b3b d99a33ad .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/24 10:02 android13-5.15-lts 829d9f138569 521b0ce3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/01/24 05:10 android13-5.15-lts 829d9f138569 521b0ce3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/04 05:02 android13-5.15-lts 5e1b899f19c3 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/04/04 02:08 android13-5.15-lts 5e1b899f19c3 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/04/03 23:21 android13-5.15-lts 5e1b899f19c3 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/04/03 21:51 android13-5.15-lts 5e1b899f19c3 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/03 20:46 android13-5.15-lts 5e1b899f19c3 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/03 20:38 android13-5.15-lts 5e1b899f19c3 d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/03 00:32 android13-5.15-lts 5e1b899f19c3 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/02 17:38 android13-5.15-lts 5e1b899f19c3 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/02 10:07 android13-5.15-lts 5e1b899f19c3 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/01 03:22 android13-5.15-lts 5e1b899f19c3 36d76a97 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/01 01:21 android13-5.15-lts 5e1b899f19c3 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/31 15:00 android13-5.15-lts 5e1b899f19c3 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/31 09:34 android13-5.15-lts 5e1b899f19c3 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/31 07:08 android13-5.15-lts 5e1b899f19c3 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/31 06:23 android13-5.15-lts 5e1b899f19c3 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/29 15:12 android13-5.15-lts 5e1b899f19c3 cf25e2c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/29 07:32 android13-5.15-lts 5e1b899f19c3 cf25e2c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/29 06:21 android13-5.15-lts 5e1b899f19c3 cf25e2c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/29 03:54 android13-5.15-lts 5e1b899f19c3 9a1a9e31 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/28 22:18 android13-5.15-lts 5e1b899f19c3 9a1a9e31 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/03/28 17:01 android13-5.15-lts 5e1b899f19c3 9a1a9e31 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/28 02:38 android13-5.15-lts 9cecf52dacae 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/03/27 22:18 android13-5.15-lts 9cecf52dacae 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/27 18:12 android13-5.15-lts 9cecf52dacae 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/27 17:55 android13-5.15-lts 9cecf52dacae 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/27 14:48 android13-5.15-lts 9cecf52dacae 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/26 12:47 android13-5.15-lts 7d1f9b5c2ff5 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/03/26 01:43 android13-5.15-lts 7d1f9b5c2ff5 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/24 07:17 android13-5.15-lts 7d1f9b5c2ff5 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/03/23 22:06 android13-5.15-lts 7d1f9b5c2ff5 4e8d3850 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/23 03:06 android13-5.15-lts 7d1f9b5c2ff5 c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/22 21:08 android13-5.15-lts 7d1f9b5c2ff5 c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/22 20:00 android13-5.15-lts 7d1f9b5c2ff5 c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/03/21 21:00 android13-5.15-lts 7d1f9b5c2ff5 c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/21 17:05 android13-5.15-lts 7d1f9b5c2ff5 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/21 15:50 android13-5.15-lts 7d1f9b5c2ff5 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/20 16:23 android13-5.15-lts 7d1f9b5c2ff5 9209bc22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/03/20 02:28 android13-5.15-lts 7d1f9b5c2ff5 e20d7b13 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/03/19 12:50 android13-5.15-lts 7d1f9b5c2ff5 8d0a2921 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/03/19 04:58 android13-5.15-lts 7d1f9b5c2ff5 8d0a2921 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/18 22:42 android13-5.15-lts 7d1f9b5c2ff5 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/16 21:44 android13-5.15-lts 7d1f9b5c2ff5 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/16 20:27 android13-5.15-lts 7d1f9b5c2ff5 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/16 17:06 android13-5.15-lts 7d1f9b5c2ff5 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/16 11:27 android13-5.15-lts 7d1f9b5c2ff5 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/15 23:49 android13-5.15-lts 7d1f9b5c2ff5 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/03/15 11:24 android13-5.15-lts 7d1f9b5c2ff5 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 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.