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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: 864d, last: 7h15m
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 1972d 2378d 15/28 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream missing-backport C done 537 5d03h 762d 0/3 upstream: reported C repro on 2023/03/11 08:51
upstream BUG: workqueue lockup (2) C 406 2528d 2686d 5/28 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 773d 2174d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2709d 2719d 3/28 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) wireguard C done 11924 3h03m 1914d 0/28 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 6527 56m 768d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2472d 2525d 8/28 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream missing-backport C error 3075 12h53m 628d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 2037d 2193d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 767d 2181d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 1167d 1265d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1961d 2192d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport C unreliable 256 3d07h 766d 0/3 upstream: reported C repro on 2023/03/07 17:51

Sample crash report:
sched: RT throttling activated
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 288s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 286s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 289s!
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: toggle_allocation_gate, flush_memcg_stats_dwork
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: neigh_periodic_work, neigh_periodic_work, gc_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: check_lifetime
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 (2672):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/04/08 20:53 android13-5.15-lts 8b377d8dcfe4 a775275d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/05 00:51 android13-5.15-lts 5e1b899f19c3 1c4febdb .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
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
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
2025/04/11 23:28 android13-5.15-lts a8a88afaecee 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/11 22:19 android13-5.15-lts a8a88afaecee 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/11 16:03 android13-5.15-lts 7b2ee2ec80df 94486846 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/11 12:12 android13-5.15-lts 760764029c6d 94486846 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/11 10:58 android13-5.15-lts 760764029c6d 94486846 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/11 09:28 android13-5.15-lts 760764029c6d 94486846 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/11 08:06 android13-5.15-lts 760764029c6d 94486846 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/11 06:14 android13-5.15-lts 760764029c6d 94486846 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/10 22:49 android13-5.15-lts 760764029c6d 1ef3ab4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/10 19:57 android13-5.15-lts 760764029c6d 1ef3ab4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/10 18:18 android13-5.15-lts 760764029c6d 1ef3ab4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/10 10:40 android13-5.15-lts 760764029c6d 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/09 23:35 android13-5.15-lts 760764029c6d 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/09 15:34 android13-5.15-lts 760764029c6d 47d015b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/09 12:38 android13-5.15-lts 760764029c6d 47d015b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/09 08:40 android13-5.15-lts 760764029c6d a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/09 02:46 android13-5.15-lts 760764029c6d a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/08 14:30 android13-5.15-lts 8b377d8dcfe4 a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/07 09:22 android13-5.15-lts 5e1b899f19c3 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/07 00:07 android13-5.15-lts 5e1b899f19c3 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/06 23:42 android13-5.15-lts 5e1b899f19c3 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/06 21:57 android13-5.15-lts 5e1b899f19c3 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/04/06 15:50 android13-5.15-lts 5e1b899f19c3 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/04/06 14:44 android13-5.15-lts 5e1b899f19c3 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/05 11:17 android13-5.15-lts 5e1b899f19c3 c53ea9c9 .config console log report info [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
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.