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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: 450d, last: 12d

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 1295d 1702d 16/24 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream C 35 5d16h 86d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup 53 16d 187d 0/2 premoderation: reported on 2022/11/29 19:20
upstream BUG: workqueue lockup (2) C 406 1851d 2009d 6/24 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 96d 1498d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2032d 2043d 3/24 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) C done 1000 1h32m 1237d 0/24 upstream: reported C repro on 2020/01/14 22:04
upstream BUG: workqueue lockup (3) C 1215 1795d 1848d 9/24 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup 1 18d 18d 0/2 premoderation: reported on 2023/05/17 23:30
android-414 BUG: workqueue lockup C 114 1360d 1516d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 90d 1504d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 490d 588d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1284d 1516d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream C 19 2d00h 89d 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 job log (0) log
2022/09/22 07:49 28m bisect fix android12-5.10-lts job log (0) log
2022/08/23 07:16 31m bisect fix android12-5.10-lts job log (0) log
2022/07/24 06:47 28m bisect fix android12-5.10-lts job log (0) log

Sample crash report:
 kthread+0x349/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 246s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 245s!
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
    in-flight: 7:toggle_allocation_gate
workqueue events_power_efficient: flags=0x80
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: neigh_periodic_work, gc_worker, check_lifetime
workqueue mm_percpu_wq: flags=0x8
  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
pool 4: cpus=0-1 flags=0x4 nice=0 hung=245s workers=3 idle: 9 177

Crashes (42):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
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
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
2023/05/24 03:32 android13-5.10-lts 43c801dc3325 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/04/30 17:26 android12-5.10-lts 416c4356f372 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/04/27 12:45 android12-5.10-lts 416c4356f372 6f3d6fa7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/04/21 12:26 android12-5.10-lts 416c4356f372 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/04/08 00:54 android12-5.10-lts 416c4356f372 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/03/30 14:49 android12-5.10-lts 416c4356f372 f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/03/30 05:35 android12-5.10-lts 416c4356f372 f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/03/28 00:18 android12-5.10-lts 416c4356f372 47f3aaf1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/03/25 14:56 android12-5.10-lts 416c4356f372 fbf0499a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/03/21 17:50 android12-5.10-lts 416c4356f372 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/03/16 19:28 android12-5.10-lts 416c4356f372 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/03/16 16:13 android12-5.10-lts 416c4356f372 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/03/16 01:00 android12-5.10-lts 416c4356f372 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/03/12 00:36 android12-5.10-lts 416c4356f372 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/03/10 12:18 android12-5.10-lts 416c4356f372 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/03/05 16:52 android12-5.10-lts 416c4356f372 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/03/05 04:34 android12-5.10-lts 416c4356f372 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/03/01 07:59 android12-5.10-lts 416c4356f372 ef65e6cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/02/27 09:06 android12-5.10-lts 416c4356f372 9189cb53 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/02/25 02:21 android12-5.10-lts 416c4356f372 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/02/24 12:59 android12-5.10-lts 416c4356f372 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/02/21 05:56 android12-5.10-lts 416c4356f372 2414209c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/02/19 12:21 android12-5.10-lts 416c4356f372 bcdf85f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/02/16 07:00 android12-5.10-lts 416c4356f372 6be0f1f5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/02/13 18:48 android12-5.10-lts 416c4356f372 957959cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/02/12 11:07 android12-5.10-lts 416c4356f372 93e26d60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/02/09 15:41 android12-5.10-lts 416c4356f372 07980f9d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/02/05 08:52 android12-5.10-lts 416c4356f372 be607b78 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/02/03 12:17 android12-5.10-lts 416c4356f372 1b2f701a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/02/03 03:54 android12-5.10-lts 416c4356f372 33fc5c09 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/01/22 13:40 android12-5.10-lts 416c4356f372 cc0f9968 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2023/01/19 22:18 android12-5.10-lts 416c4356f372 71197f3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/01/06 09:28 android12-5.10-lts 003c389455eb 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2022/11/27 23:55 android12-5.10-lts 673a7341bdab f4470a7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2022/10/11 01:20 android12-5.10-lts bc7618b4936f 5bcf0c31 .config console log report info [disk image] [vmlinux] ci2-android-5-10 BUG: workqueue lockup
2022/06/24 06:47 android12-5.10-lts fdd06dc6b0f8 912f5df7 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2022/05/17 14:34 android12-5.10-lts 0577ff1c6970 744a39e2 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2022/04/22 16:52 android12-5.10-lts e08dd85cc95e 131df97d .config console log report info ci2-android-5-10 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.