syzbot


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: 683d, last: 1h06m
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 (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block C 47 1960d 2366d 15/28 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream missing-backport C done 528 3d06h 751d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup origin:upstream missing-backport C error 2582 57m 647d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) C 406 2516d 2674d 5/28 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 761d 2162d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2697d 2708d 3/28 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) wireguard C done 11782 1h37m 1902d 0/28 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 6363 2h55m 756d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2460d 2513d 8/28 fixed on 2018/07/09 18:05
android-414 BUG: workqueue lockup C 114 2025d 2181d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 755d 2169d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 1155d 1253d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1949d 2181d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport C unreliable 249 4h13m 754d 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 197s!
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=3/256 refcnt=4
    pending: neigh_managed_work, neigh_periodic_work, gc_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: neigh_managed_work, neigh_periodic_work, 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 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 (3016):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/17 15:31 android14-6.1 33c9d4844afc 948c34e4 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/14 10:43 android14-6.1 70d032fba5f4 e2826670 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/10 13:30 android14-6.1 44db4837f75e 163f510d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/10 10:19 android14-6.1 44db4837f75e 163f510d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/10 02:39 android14-6.1 44db4837f75e 163f510d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/09 15:18 android14-6.1 44db4837f75e 163f510d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/25 02:03 android14-6.1 cf7683f71956 d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/21 06:26 android14-6.1 a5f88b652947 0808a665 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/20 12:43 android14-6.1 a5f88b652947 50668798 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/20 10:58 android14-6.1 a5f88b652947 50668798 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/16 12:33 android14-6.1 ccc915784332 40a34ec9 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/15 18:00 android14-6.1 ccc915784332 40a34ec9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/14 23:38 android14-6.1 ccc915784332 1022af74 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/14 11:32 android14-6.1 ccc915784332 d9a046cf .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/04 20:28 android14-6.1 4033df202b20 8f267cef .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/02 13:53 android14-6.1 2055772eada0 568559e4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/01 12:13 android14-6.1 2055772eada0 aa47157c .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/31 22:27 android14-6.1 554eb9d61ac0 aa47157c .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/31 06:26 android14-6.1 554eb9d61ac0 4c6ac32f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/30 22:30 android14-6.1 554eb9d61ac0 4c6ac32f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/26 19:20 android14-6.1 ef4fb40b87a9 9fbd772e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/23 04:43 android14-6.1 0405a25a6ed7 a44b0418 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/20 09:26 android14-6.1 d12538e9da37 f2cb035c .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/18 20:05 android14-6.1 d12538e9da37 f2cb035c .config strace 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
2025/03/29 00:23 android14-6.1 c1fd50266bd6 9a1a9e31 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/14 20:05 android14-6.1 27895588a299 e2826670 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/13 05:37 android14-6.1 69a6dfc9c3cb 1a5d9317 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/10 06:17 android14-6.1 44db4837f75e 163f510d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/07 05:18 android14-6.1 471a10d3af3b 831e3629 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/04 14:35 android14-6.1 471a10d3af3b c3901742 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/25 07:41 android14-6.1 cf7683f71956 d34966d1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/24 14:37 android14-6.1 a624f97c9afe d34966d1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/16 15:13 android14-6.1 ccc915784332 40a34ec9 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/15 12:51 android14-6.1 ccc915784332 40a34ec9 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/13 01:03 android14-6.1 c93dcf3b5358 b27c2402 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/02/12 05:57 android14-6.1 c93dcf3b5358 f2baddf5 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/31 08:15 android14-6.1 554eb9d61ac0 4c6ac32f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/31 00:19 android14-6.1 554eb9d61ac0 4c6ac32f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/21 15:52 android14-6.1 d12538e9da37 6e87cfa2 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/01/19 23:41 android14-6.1 d12538e9da37 f2cb035c .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/31 09:24 android14-6.1 c1fd50266bd6 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/30 12:31 android14-6.1 c1fd50266bd6 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/30 07:28 android14-6.1 c1fd50266bd6 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/30 03:02 android14-6.1 c1fd50266bd6 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf BUG: workqueue lockup
2025/03/29 20:53 android14-6.1 c1fd50266bd6 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/29 15:58 android14-6.1 c1fd50266bd6 cf25e2c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/29 13:20 android14-6.1 c1fd50266bd6 cf25e2c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/29 09:19 android14-6.1 c1fd50266bd6 cf25e2c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/28 17:32 android14-6.1 c1fd50266bd6 9a1a9e31 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/28 10:35 android14-6.1 c1fd50266bd6 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/28 04:34 android14-6.1 e1ab072bcf60 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/28 04:31 android14-6.1 e1ab072bcf60 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/27 18:41 android14-6.1 e1ab072bcf60 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf BUG: workqueue lockup
2025/03/26 23:03 android14-6.1 1c9aeb1ce34b 20510e88 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/26 20:47 android14-6.1 1c9aeb1ce34b 20510e88 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/26 18:36 android14-6.1 1c9aeb1ce34b 20510e88 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/25 15:23 android14-6.1 5145d157731f 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/24 22:40 android14-6.1 5145d157731f 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/24 11:43 android14-6.1 5145d157731f 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/22 09:54 android14-6.1 5145d157731f c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/21 22:51 android14-6.1 5145d157731f c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/21 17:53 android14-6.1 5145d157731f 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/19 16:02 android14-6.1 6bd3e435f2e8 e20d7b13 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/19 01:52 android14-6.1 2afd0800a730 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/18 19:37 android14-6.1 2afd0800a730 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/18 18:35 android14-6.1 2afd0800a730 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/18 15:10 android14-6.1 2afd0800a730 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/17 06:05 android14-6.1 33c9d4844afc 948c34e4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/16 23:54 android14-6.1 33c9d4844afc e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/16 16:43 android14-6.1 33c9d4844afc e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf BUG: workqueue lockup
2025/03/15 14:55 android14-6.1 4da91a8e563c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/15 04:43 android14-6.1 4da91a8e563c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/15 03:27 android14-6.1 4da91a8e563c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/14 13:45 android14-6.1 27895588a299 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf BUG: workqueue lockup
2025/03/13 13:17 android14-6.1 efd0bedd2cb2 44be8b44 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/13 00:55 android14-6.1 69a6dfc9c3cb 1a5d9317 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/12 22:35 android14-6.1 69a6dfc9c3cb 1a5d9317 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/12 04:37 android14-6.1 9bcabbda673a ee70e6db .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/11 11:16 android14-6.1 44db4837f75e 16256247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/10 06:31 android14-6.1 44db4837f75e 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/09 13:18 android14-6.1 44db4837f75e 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/06 20:18 android14-6.1 471a10d3af3b 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/06 18:22 android14-6.1 471a10d3af3b 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/06 13:32 android14-6.1 471a10d3af3b 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/06 09:54 android14-6.1 471a10d3af3b 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/06 00:52 android14-6.1 471a10d3af3b 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: workqueue lockup
2025/03/05 08:31 android14-6.1 471a10d3af3b c3901742 .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.