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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: 1160d, last: 28m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block C 47 2005d 2412d 15/28 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream missing-backport C done 561 1d16h 796d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup origin:upstream missing-backport C error 3069 5h46m 692d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) C 406 2562d 2720d 5/28 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 806d 2208d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2742d 2753d 3/28 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) wireguard arm C done 12294 1h15m 1947d 0/28 upstream: reported C repro on 2020/01/14 22:04
upstream BUG: workqueue lockup (3) C 1215 2506d 2558d 8/28 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream missing-backport C error 3289 2h01m 662d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 2070d 2226d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 800d 2214d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 1200d 1299d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1994d 2226d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport C unreliable 275 2d07h 799d 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 142s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 143s!
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=1/512 refcnt=3
    pending: toggle_allocation_gate
workqueue events_power_efficient: flags=0x80
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    pending: neigh_periodic_work, neigh_periodic_work, gc_worker, 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
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 2: cpus=1 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 (7586):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/15 00:31 android13-5.10-lts 7e2543346ff7 a4fa04ef .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 20:08 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/08 03:37 android13-5.10-lts 7e2543346ff7 dbf35fa1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/08 00:51 android13-5.10-lts 7e2543346ff7 dbf35fa1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/07 20:38 android13-5.10-lts 7e2543346ff7 dbf35fa1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/07 13:21 android13-5.10-lts 7e2543346ff7 350f4ffc .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/04 18:43 android13-5.10-lts ab07aeb2c93d b0714e37 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/04 17:02 android13-5.10-lts ab07aeb2c93d b0714e37 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/04 09:10 android13-5.10-lts ab07aeb2c93d b0714e37 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/04 06:42 android13-5.10-lts ab07aeb2c93d b0714e37 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/04 04:03 android13-5.10-lts ab07aeb2c93d b0714e37 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/03 23:11 android13-5.10-lts ab07aeb2c93d b0714e37 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/03 19:43 android13-5.10-lts ab07aeb2c93d b0714e37 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/02 21:47 android13-5.10-lts ab07aeb2c93d b0714e37 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/29 02:25 android13-5.10-lts ab07aeb2c93d aeb6ec69 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/29 00:28 android13-5.10-lts ab07aeb2c93d aeb6ec69 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 20:01 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 15:47 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 03:59 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/24 17:19 android13-5.10-lts ba8b8b193394 9882047a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/21 20:15 android13-5.10-lts ba8b8b193394 2a20f901 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/17 03:00 android13-5.10-lts ba8b8b193394 a95239b1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/16 16:32 android13-5.10-lts ba8b8b193394 a95239b1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/16 09:33 android13-5.10-lts ba8b8b193394 a95239b1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/16 06:04 android13-5.10-lts ba8b8b193394 a95239b1 .config console 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
2025/05/12 15:26 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/07 23:12 android13-5.10-lts 7e2543346ff7 dbf35fa1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/06 05:49 android13-5.10-lts ab07aeb2c93d ae98e6b9 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/06 00:35 android13-5.10-lts ab07aeb2c93d 6ca47dd8 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/05 08:32 android13-5.10-lts ab07aeb2c93d b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/05 05:49 android13-5.10-lts ab07aeb2c93d b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/05 03:12 android13-5.10-lts ab07aeb2c93d b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/04 02:10 android13-5.10-lts ab07aeb2c93d b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/03 17:23 android13-5.10-lts ab07aeb2c93d b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/20 23:23 android13-5.10-lts ba8b8b193394 2a20f901 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/17 00:29 android13-5.10-lts ba8b8b193394 a95239b1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/16 21:38 android13-5.10-lts ba8b8b193394 a95239b1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/16 19:38 android13-5.10-lts ba8b8b193394 a95239b1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/16 13:40 android13-5.10-lts ba8b8b193394 a95239b1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/16 11:15 android13-5.10-lts ba8b8b193394 a95239b1 .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
2025/05/15 17:20 android13-5.10-lts 7e2543346ff7 cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/15 14:56 android13-5.10-lts 7e2543346ff7 d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/15 13:03 android13-5.10-lts 7e2543346ff7 d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/15 11:33 android13-5.10-lts 7e2543346ff7 d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/15 09:24 android13-5.10-lts 7e2543346ff7 d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/15 09:20 android13-5.10-lts 7e2543346ff7 d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/15 01:45 android13-5.10-lts 7e2543346ff7 d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/15 00:19 android13-5.10-lts 7e2543346ff7 a4fa04ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 22:43 android13-5.10-lts 7e2543346ff7 a4fa04ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 18:28 android13-5.10-lts 7e2543346ff7 a4fa04ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 14:39 android13-5.10-lts 7e2543346ff7 a4fa04ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 13:31 android13-5.10-lts 7e2543346ff7 a4fa04ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 11:48 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 10:13 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 09:05 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 07:33 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 06:32 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 05:25 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 02:57 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/14 00:53 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 23:38 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 22:22 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 19:31 android13-5.10-lts 7e2543346ff7 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 14:01 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 12:26 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 11:24 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 10:13 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 08:10 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 06:41 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/13 01:03 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 23:46 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 19:54 android13-5.10-lts 7e2543346ff7 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 16:05 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 14:39 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 13:31 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 12:18 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 11:09 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 09:27 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 07:42 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 06:29 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 04:48 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 03:18 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 03:08 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/12 01:22 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/11 23:59 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/11 22:39 android13-5.10-lts 7e2543346ff7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/05/05 19:32 android13-5.10-lts ab07aeb2c93d 6ca47dd8 .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.