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BUG: workqueue lockup (2)

Status: upstream: reported C repro on 2023/03/05 21:10
Reported-by: syzbot+94b3d6f6cf4c1e28df60@syzkaller.appspotmail.com
First crash: 1216d, last: 32m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (15)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block -1 C 47 2062d 2468d 15/29 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup missing-backport origin:upstream -1 C done 613 5h51m 852d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup origin:upstream missing-backport -1 C error 3573 9h31m 749d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) -1 C 406 2618d 2776d 5/29 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup -1 C 282 862d 2264d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup -1 C 172 2799d 2809d 3/29 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) net 1 C done 12841 4h41m 2004d 0/29 upstream: reported C repro on 2020/01/14 22:04
upstream BUG: workqueue lockup (3) -1 C 1215 2562d 2615d 8/29 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream missing-backport -1 C error 3654 1h22m 718d 0/2 upstream: reported C repro on 2023/07/23 17:25
linux-6.6 BUG: workqueue lockup -1 5 4d16h 24d 0/2 upstream: reported on 2025/06/17 05:08
android-414 BUG: workqueue lockup -1 C 114 2127d 2283d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup -1 C error 41 857d 2271d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup -1 C error 25 1257d 1355d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup -1 C 69 2051d 2282d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport -1 C unreliable 307 8d09h 856d 0/3 upstream: reported C repro on 2023/03/07 17:51
▶ ▼ Fix bisection attempts (4)
Created Duration User Patch Repo Result
2022/11/10 01:20 27m bisect fix android12-5.10-lts OK (0) job log log
2022/09/22 07:49 28m bisect fix android12-5.10-lts OK (0) job log log
2022/08/23 07:16 31m bisect fix android12-5.10-lts OK (0) job log log
2022/07/24 06:47 28m bisect fix android12-5.10-lts OK (0) job log log

Sample crash report:
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 168s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 168s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 169s!
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=1/512 refcnt=3
    pending: toggle_allocation_gate
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: neigh_periodic_work, check_lifetime
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: gc_worker, neigh_periodic_work
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 dm_bufio_cache: flags=0x8
  pwq 2: cpus=1 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 (9187):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/11 01:31 android13-5.10-lts 59e9a7228857 3cda49cf .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 15:43 android13-5.10-lts 59e9a7228857 956bd956 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 10:32 android13-5.10-lts 59e9a7228857 956bd956 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 01:27 android13-5.10-lts 59e9a7228857 f4e5e155 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/09 23:03 android13-5.10-lts 59e9a7228857 f4e5e155 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/04 07:34 android13-5.10-lts 59e9a7228857 76ad128c .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/02 01:26 android13-5.10-lts 59e9a7228857 091a06cd .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/23 13:34 android13-5.10-lts d76d4cd0623a d6cdfb8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/23 11:01 android13-5.10-lts d76d4cd0623a d6cdfb8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/22 14:08 android13-5.10-lts d76d4cd0623a d6cdfb8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/20 22:07 android13-5.10-lts d76d4cd0623a 804b3919 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/11 01:44 android13-5.10-lts d76d4cd0623a 5d7e17ca .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/07 19:52 android13-5.10-lts d76d4cd0623a 4826c28e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/07 17:41 android13-5.10-lts d76d4cd0623a 4826c28e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/07 14:12 android13-5.10-lts d76d4cd0623a 4826c28e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/30 19:33 android13-5.10-lts cf6ed0f1511d 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/30 17:46 android13-5.10-lts cf6ed0f1511d 3d2f584d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/28 15:45 android13-5.10-lts cf6ed0f1511d 874a1386 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/28 05:07 android13-5.10-lts cf6ed0f1511d 874a1386 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/26 19:40 android13-5.10-lts 7e2543346ff7 874a1386 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/26 12:41 android13-5.10-lts 7e2543346ff7 2d4582d0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/25 23:54 android13-5.10-lts 7e2543346ff7 2d4582d0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/25 22:08 android13-5.10-lts 7e2543346ff7 2d4582d0 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/24 14:14 android13-5.10-lts 7e2543346ff7 ed351ea7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/22 23:43 android13-5.10-lts 7e2543346ff7 0919b50b .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/22 06:50 android13-5.10-lts 7e2543346ff7 0919b50b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/21 20:58 android13-5.10-lts 7e2543346ff7 dc5d3808 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/03/05 21:07 android12-5.10-lts 416c4356f372 f8902b57 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 12:37 android13-5.10-lts 59e9a7228857 956bd956 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/03 03:22 android13-5.10-lts 59e9a7228857 bc80e4f0 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/01 00:58 android13-5.10-lts 59e9a7228857 6e83b42d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/28 21:43 android13-5.10-lts 59e9a7228857 fc9d8ee5 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/28 08:41 android13-5.10-lts 59e9a7228857 fc9d8ee5 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/28 05:34 android13-5.10-lts 59e9a7228857 fc9d8ee5 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/25 05:39 android13-5.10-lts d76d4cd0623a 26d77996 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/24 06:57 android13-5.10-lts d76d4cd0623a e2f27c35 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/16 03:27 android13-5.10-lts d76d4cd0623a 5f4b362d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/15 05:11 android13-5.10-lts d76d4cd0623a 5f4b362d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/15 01:34 android13-5.10-lts d76d4cd0623a 5f4b362d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/07 10:09 android13-5.10-lts d76d4cd0623a 4826c28e .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/06/07 08:38 android13-5.10-lts d76d4cd0623a 4826c28e .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/22 18:59 android13-5.10-lts 7e2543346ff7 0919b50b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2022/10/08 18:58 android12-5.10-lts bc7618b4936f aea5da89 .config strace log report syz [disk image] [vmlinux] ci2-android-5-10 BUG: workqueue lockup
2022/05/25 21:03 android12-5.10-lts 0974b8411a58 3037caa9 .config console log report syz ci2-android-5-10 BUG: workqueue lockup
2025/07/11 04:42 android13-5.10-lts 59e9a7228857 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/11 03:29 android13-5.10-lts 59e9a7228857 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/11 02:27 android13-5.10-lts 59e9a7228857 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/11 01:29 android13-5.10-lts 59e9a7228857 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 23:38 android13-5.10-lts 59e9a7228857 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 19:59 android13-5.10-lts 59e9a7228857 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 18:04 android13-5.10-lts 59e9a7228857 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 14:47 android13-5.10-lts 59e9a7228857 956bd956 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 09:58 android13-5.10-lts 59e9a7228857 956bd956 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 08:29 android13-5.10-lts 59e9a7228857 956bd956 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 07:08 android13-5.10-lts 59e9a7228857 956bd956 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 06:00 android13-5.10-lts 59e9a7228857 956bd956 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/10 00:22 android13-5.10-lts 59e9a7228857 f4e5e155 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/09 19:48 android13-5.10-lts 59e9a7228857 f4e5e155 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/09 13:09 android13-5.10-lts 59e9a7228857 f4e5e155 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/09 11:02 android13-5.10-lts 59e9a7228857 f4e5e155 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/09 10:01 android13-5.10-lts 59e9a7228857 f4e5e155 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/09 05:16 android13-5.10-lts 59e9a7228857 4d9fdfa4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/09 03:57 android13-5.10-lts 59e9a7228857 4d9fdfa4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/09 02:45 android13-5.10-lts 59e9a7228857 4d9fdfa4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/09 02:18 android13-5.10-lts 59e9a7228857 4d9fdfa4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 23:44 android13-5.10-lts 59e9a7228857 4d9fdfa4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 22:12 android13-5.10-lts 59e9a7228857 4d9fdfa4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 19:30 android13-5.10-lts 59e9a7228857 4d9fdfa4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 14:04 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 12:59 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 11:53 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 10:52 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 09:36 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 07:48 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 05:25 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 04:15 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 03:04 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 01:53 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/08 00:45 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/07 23:35 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/07 21:59 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/07 19:51 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/07 18:33 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/07 16:39 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/07 15:12 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/07 11:47 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/07 10:03 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/07/05 05:34 android13-5.10-lts 59e9a7228857 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2022/03/12 13:24 android12-5.10-lts e1b86e7f5cbb 9e8eaa75 .config console log report info ci2-android-5-10 BUG: workqueue lockup
* Struck through repros no longer work on HEAD.