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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: 1143d, last: 32m
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 1988d 2395d 15/28 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream missing-backport C done 548 2d03h 779d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup origin:upstream missing-backport C error 2896 6h31m 675d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) C 406 2545d 2703d 5/28 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 789d 2191d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2725d 2736d 3/28 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) wireguard arm C done 12099 1h37m 1930d 0/28 upstream: reported C repro on 2020/01/14 22:04
upstream BUG: workqueue lockup (3) C 1215 2489d 2541d 8/28 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream missing-backport C error 3181 2h59m 645d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 2053d 2209d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 783d 2197d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 1183d 1282d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1977d 2209d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport C unreliable 266 9m 783d 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:
 kthread+0x346/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 257s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 257s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 254s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 257s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: vmstat_shepherd, psi_avgs_work, regulator_init_complete_work_function
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=1/256 refcnt=2
    pending: neigh_periodic_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    pending: neigh_periodic_work, reg_check_chans_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
  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 kblockd: flags=0x18
  pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
    pending: blk_mq_timeout_work
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 (7120):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2025/04/16 01:49 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
2025/04/09 19:06 android13-5.10-lts e0b88ee5f09c 47d015b1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/06 13:22 android13-5.10-lts 094fc3778d6b 1c65791e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/06 08:54 android13-5.10-lts 094fc3778d6b 1c65791e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/04 20:31 android13-5.10-lts 094fc3778d6b 1c4febdb .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/04 15:37 android13-5.10-lts 094fc3778d6b 1c4febdb .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/04 08:03 android13-5.10-lts 094fc3778d6b d7ae3a11 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/04 03:31 android13-5.10-lts 094fc3778d6b d7ae3a11 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/03 22:05 android13-5.10-lts 094fc3778d6b d7ae3a11 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/03 17:14 android13-5.10-lts 094fc3778d6b 996a9618 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/03/30 19:14 android13-5.10-lts 094fc3778d6b d3999433 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/03/15 16:47 android13-5.10-lts fc9aa81462ee e2826670 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/03/02 07:02 android13-5.10-lts 3f5f2283d684 c3901742 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/03/01 22:09 android13-5.10-lts 3f5f2283d684 c3901742 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/03/01 20:27 android13-5.10-lts 3f5f2283d684 c3901742 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/03/01 06:43 android13-5.10-lts 3f5f2283d684 67cf5345 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/03/01 04:48 android13-5.10-lts 3f5f2283d684 67cf5345 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/02/27 19:17 android13-5.10-lts 3f5f2283d684 6a8fcbc4 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/02/26 14:38 android13-5.10-lts 3f5f2283d684 d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/02/26 01:20 android13-5.10-lts 3f5f2283d684 d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/02/17 15:51 android13-5.10-lts 6686f2996d23 4121cf9d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/02/11 18:50 android13-5.10-lts 6686f2996d23 f2baddf5 .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
2025/04/20 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
2025/04/07 01:21 android13-5.10-lts 094fc3778d6b 1c65791e .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/03/20 12:29 android13-5.10-lts 094fc3778d6b 9209bc22 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/03/16 12:33 android13-5.10-lts fc9aa81462ee e2826670 .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
2025/04/28 17:32 android13-5.10-lts ab07aeb2c93d c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/28 08:34 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/28 06:57 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/28 05:55 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/28 04:50 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/28 03:37 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/28 02:29 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/28 02:08 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/28 01:02 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 22:13 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 21:04 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 18:54 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 17:42 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 16:07 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 14:56 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 13:22 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 12:12 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 11:10 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 10:05 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 08:48 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 07:24 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 06:32 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 05:27 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 03:15 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/27 01:47 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 21:13 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 20:59 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 19:07 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 18:05 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 16:48 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 14:45 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 13:35 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 12:17 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 10:51 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 09:31 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 06:54 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 06:39 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/26 03:32 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/25 23:17 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/25 20:14 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/25 19:14 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/25 14:26 android13-5.10-lts ba8b8b193394 e3715315 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/25 13:12 android13-5.10-lts ba8b8b193394 e3715315 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/25 06:13 android13-5.10-lts ba8b8b193394 e3715315 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/25 03:03 android13-5.10-lts ba8b8b193394 9882047a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2025/04/04 01:17 android13-5.10-lts 094fc3778d6b d7ae3a11 .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.