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BUG: workqueue lockup

Status: upstream: reported C repro on 2023/07/23 17:25
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+64286f251ae123d869a5@syzkaller.appspotmail.com
First crash: 771d, last: 3h40m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (4)
Date Name Commit Repro Result
2024/10/23 android14-6.1 (ToT) e02772c76d6f C [report] BUG: workqueue lockup
2023/09/10 lts (merge base) b1644a0031cf C [report] BUG: workqueue lockup
2023/09/10 upstream (ToT) 1548b060d6f3 C [report] BUG: workqueue lockup
2024/10/23 upstream (ToT) c2ee9f594da8 C Didn't crash
▶ ▼ Similar bugs (15)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block C 47 2048d 2455d 15/29 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup missing-backport origin:upstream C done 600 18h26m 839d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup origin:upstream missing-backport C error 3479 17m 735d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) C 406 2604d 2763d 5/29 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 849d 2251d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2785d 2796d 3/29 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) net C done 12753 3h53m 1990d 0/29 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 8771 now 844d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2549d 2601d 8/29 fixed on 2018/07/09 18:05
linux-6.6 BUG: workqueue lockup 3 3d05h 10d 0/2 upstream: reported on 2025/06/17 05:08
android-414 BUG: workqueue lockup C 114 2113d 2269d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 843d 2257d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 1243d 1342d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 2037d 2269d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport C unreliable 304 5d13h 842d 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 149s!
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=5/256 refcnt=6
    pending: neigh_managed_work, neigh_managed_work, 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 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 (3589):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/12 04:41 android14-6.1 5b2e204a7b75 98683f8f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/26 08:44 android14-6.1 3c6d0251e1fb 2d4582d0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/26 02:25 android14-6.1 3c6d0251e1fb 2d4582d0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/26 00:38 android14-6.1 3c6d0251e1fb 2d4582d0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/25 11:19 android14-6.1 3c6d0251e1fb ed351ea7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/25 09:23 android14-6.1 3c6d0251e1fb ed351ea7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/24 18:43 android14-6.1 3c6d0251e1fb ed351ea7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/08 02:03 android14-6.1 646380b087a5 dbf35fa1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/01 09:42 android14-6.1 242f90b45e89 ce7952f4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/30 00:15 android14-6.1 242f90b45e89 85a5a23f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/27 12:49 android14-6.1 a4fc1bef0501 c6b4fb39 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/12 15:51 android14-6.1 19a0fb1d3513 0bd6db41 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/11 04:18 android14-6.1 6bd3b482a8f1 1ef3ab4d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/09 20:11 android14-6.1 ca24c52e3c25 47d015b1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/01 12:18 android14-6.1 df2dac406f15 36d76a97 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2024/03/02 15:47 android14-6.1 09ca5740fbbe 25905f5d .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2024/02/29 11:00 android14-6.1 4289e1348ea3 352ab904 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2024/02/29 06:14 android14-6.1 4289e1348ea3 352ab904 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2024/02/28 18:49 android14-6.1 26d7216e1dd5 55d6f11d .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2024/02/23 19:18 android14-6.1 8c0f9174731d 8d446f15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2023/10/08 06:01 android14-6.1 1fe248991f96 5e837c76 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2023/09/17 10:26 android14-6.1 d3212c2dbaba 0b6a67ac .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2023/09/14 04:35 android14-6.1 c2ac612610e0 0b6a67ac .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2023/09/10 19:15 android14-6.1 cd94fe67fd33 6654cf89 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2023/08/27 05:27 android14-6.1 5ef132d5643b 7ba13a15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2023/07/23 17:17 android14-6.1 d51e21b39415 27cbe77f .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/19 20:09 android14-6.1 f6c21bc9a693 ed3e87f7 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/15 04:32 android14-6.1 6246d345f550 5f4b362d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/13 20:07 android14-6.1 74db64dcc8aa 98683f8f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/24 00:10 android14-6.1 3c6d0251e1fb f8cc0c83 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/17 08:07 android14-6.1 a0fa2316cce1 f41472b0 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/16 18:04 android14-6.1 a0fa2316cce1 cfde8269 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/10 01:00 android14-6.1 646380b087a5 77908e5f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/09 11:41 android14-6.1 646380b087a5 bb813bcc .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/06 16:29 android14-6.1 7b89b57429c2 ae98e6b9 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/05 12:10 android14-6.1 0c1a07d9c284 b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/04 23:59 android14-6.1 0c1a07d9c284 b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/01 23:21 android14-6.1 0c1a07d9c284 51b137cd .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/01 07:22 android14-6.1 242f90b45e89 ce7952f4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/05/01 04:28 android14-6.1 242f90b45e89 ce7952f4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/30 12:28 android14-6.1 242f90b45e89 85a5a23f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/28 05:42 android14-6.1 a4fc1bef0501 c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/27 14:37 android14-6.1 a4fc1bef0501 c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/26 18:31 android14-6.1 25fc41bbde8e c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/25 12:05 android14-6.1 70d648657b1e e3715315 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/18 09:45 android14-6.1 bc3d1d352ab6 2a20f901 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/18 05:54 android14-6.1 bc3d1d352ab6 2a20f901 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/17 05:41 android14-6.1 05899bf38900 a95239b1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/13 14:56 android14-6.1 19a0fb1d3513 0bd6db41 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/13 02:42 android14-6.1 19a0fb1d3513 0bd6db41 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/04/12 09:48 android14-6.1 777d8313618b 0bd6db41 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/27 11:49 android14-6.1 36d69f6a49eb 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/26 17:25 android14-6.1 36d69f6a49eb 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/26 15:14 android14-6.1 36d69f6a49eb 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/26 12:47 android14-6.1 36d69f6a49eb 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/26 12:17 android14-6.1 36d69f6a49eb 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/26 08:33 android14-6.1 44c8456c4231 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/26 05:36 android14-6.1 44c8456c4231 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/25 23:11 android14-6.1 44c8456c4231 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/25 11:25 android14-6.1 147721011eea 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/25 09:40 android14-6.1 147721011eea 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/25 02:11 android14-6.1 5ea45f742edd 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/25 01:07 android14-6.1 5ea45f742edd 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/25 01:03 android14-6.1 5ea45f742edd 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/25 00:00 android14-6.1 5ea45f742edd 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/24 22:40 android14-6.1 5ea45f742edd 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/24 21:22 android14-6.1 5ea45f742edd 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/24 19:53 android14-6.1 5ea45f742edd 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/24 14:54 android14-6.1 45271a2c461a e2f27c35 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/24 07:04 android14-6.1 45271a2c461a e2f27c35 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/24 05:23 android14-6.1 45271a2c461a e2f27c35 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/24 03:32 android14-6.1 45271a2c461a e2f27c35 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/24 01:31 android14-6.1 45271a2c461a e2f27c35 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/22 17:51 android14-6.1 45271a2c461a d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/22 12:29 android14-6.1 f6c21bc9a693 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/22 08:39 android14-6.1 f6c21bc9a693 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/22 06:05 android14-6.1 f6c21bc9a693 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/21 14:24 android14-6.1 f6c21bc9a693 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/20 15:43 android14-6.1 f6c21bc9a693 804b3919 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/20 11:43 android14-6.1 f6c21bc9a693 ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/20 03:09 android14-6.1 f6c21bc9a693 ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/19 18:21 android14-6.1 f6c21bc9a693 ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/19 14:24 android14-6.1 f6c21bc9a693 ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/18 15:25 android14-6.1 ba4506940166 ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/18 10:07 android14-6.1 ba4506940166 e77fae15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf BUG: workqueue lockup
2025/06/18 03:11 android14-6.1 ba4506940166 e77fae15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/17 21:05 android14-6.1 ba4506940166 e77fae15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/17 05:45 android14-6.1 6246d345f550 cfebc887 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/17 05:41 android14-6.1 6246d345f550 cfebc887 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/17 03:24 android14-6.1 6246d345f550 cfebc887 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/16 10:24 android14-6.1 6246d345f550 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/16 07:54 android14-6.1 6246d345f550 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/15 13:37 android14-6.1 6246d345f550 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/15 09:37 android14-6.1 6246d345f550 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/15 07:42 android14-6.1 6246d345f550 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/14 20:22 android14-6.1 6246d345f550 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/06/14 03:03 android14-6.1 6246d345f550 0e8da31f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2023/07/05 20:16 android14-6.1 f63b2625af7c ba5dba36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf BUG: workqueue lockup
* Struck through repros no longer work on HEAD.