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BUG: workqueue lockup

Status: upstream: reported C repro on 2023/06/22 22:19
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+2499e5a71acdc2680959@syzkaller.appspotmail.com
First crash: 949d, last: 15h47m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (4)
Date Name Commit Repro Result
2023/09/06 android13-5.15-lts (ToT) 1317bd27a72f C [report] BUG: workqueue lockup
2023/06/23 lts (merge base) 8a7f2a5c5aa1 C Didn't crash
2023/06/23 upstream (ToT) 8a28a0b6f1a1 C [report] BUG: workqueue lockup
2023/09/06 upstream (ToT) 65d6e954e378 C Didn't crash
▶ ▼ Similar bugs (15)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block C 47 2057d 2464d 15/29 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup missing-backport origin:upstream C done 609 13h52m 848d 0/3 upstream: reported C repro on 2023/03/11 08:51
upstream BUG: workqueue lockup (2) C 406 2613d 2771d 5/29 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 858d 2260d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2794d 2805d 3/29 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) net C done 12818 5h37m 1999d 0/29 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 9037 33m 853d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2557d 2610d 8/29 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream missing-backport C error 3643 6h04m 713d 0/2 upstream: reported C repro on 2023/07/23 17:25
linux-6.6 BUG: workqueue lockup 5 21m 19d 0/2 upstream: reported on 2025/06/17 05:08
android-414 BUG: workqueue lockup C 114 2122d 2278d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 852d 2266d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 1252d 1350d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 2046d 2278d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport C unreliable 307 3d17h 851d 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 146s!
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=2/512 refcnt=4
    pending: flush_memcg_stats_dwork, 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: check_lifetime, neigh_periodic_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: neigh_periodic_work, gc_worker
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 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work

Crashes (3540):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/23 10:21 android13-5.15-lts e678c93d43cc d6cdfb8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/20 01:53 android13-5.15-lts e678c93d43cc ed3e87f7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/03 09:07 android13-5.15-lts 4032a894ccb2 a30356b7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/02 23:34 android13-5.15-lts 4032a894ccb2 b396b4bf .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/02 17:39 android13-5.15-lts 4032a894ccb2 b396b4bf .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/02 15:58 android13-5.15-lts 4032a894ccb2 b396b4bf .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/31 02:46 android13-5.15-lts 4032a894ccb2 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/29 22:27 android13-5.15-lts 4032a894ccb2 3d2f584d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/28 08:15 android13-5.15-lts 4032a894ccb2 874a1386 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/15 23:24 android13-5.15-lts 57725b368731 cfde8269 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/05 05:48 android13-5.15-lts 88c4075c39ed b0714e37 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/04 13:11 android13-5.15-lts 88c4075c39ed b0714e37 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/18 05:08 android13-5.15-lts 8034ec1338e8 2a20f901 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/16 08:26 android13-5.15-lts 8034ec1338e8 a95239b1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/14 08:30 android13-5.15-lts a8a88afaecee 0bd6db41 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/06/22 22:07 android13-5.15-lts 565c3abfa129 79782afc .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/22 08:16 android13-5.15-lts e678c93d43cc d6cdfb8a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/21 11:37 android13-5.15-lts e678c93d43cc d6cdfb8a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/30 11:37 android13-5.15-lts 4032a894ccb2 3d2f584d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/24 13:25 android13-5.15-lts 4b77ae0e7f58 ed351ea7 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/17 21:24 android13-5.15-lts 57725b368731 f41472b0 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/17 11:17 android13-5.15-lts 57725b368731 f41472b0 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/14 20:53 android13-5.15-lts 57725b368731 a4fa04ef .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/13 22:44 android13-5.15-lts 57725b368731 7344edeb .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/13 09:13 android13-5.15-lts 57725b368731 f6671af7 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/10 00:31 android13-5.15-lts f93c8b5a9e60 77908e5f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/09 11:21 android13-5.15-lts f93c8b5a9e60 bb813bcc .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/09 09:23 android13-5.15-lts f93c8b5a9e60 bb813bcc .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/09 05:26 android13-5.15-lts f93c8b5a9e60 bb813bcc .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/08 14:54 android13-5.15-lts 57b1420d5e49 dbf35fa1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/05 11:41 android13-5.15-lts 88c4075c39ed b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/04 20:15 android13-5.15-lts 88c4075c39ed b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/03 20:37 android13-5.15-lts 88c4075c39ed b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/03 10:16 android13-5.15-lts 88c4075c39ed b0714e37 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/05/01 22:44 android13-5.15-lts 88c4075c39ed 51b137cd .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/26 16:12 android13-5.15-lts 8034ec1338e8 c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/19 08:57 android13-5.15-lts 8034ec1338e8 2a20f901 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/18 22:14 android13-5.15-lts 8034ec1338e8 2a20f901 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/18 13:37 android13-5.15-lts 8034ec1338e8 2a20f901 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/18 11:37 android13-5.15-lts 8034ec1338e8 2a20f901 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/04/16 06:03 android13-5.15-lts 8034ec1338e8 a95239b1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/05 21:57 android13-5.15-lts 5cf73bface18 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2025/07/05 10:54 android13-5.15-lts 5cf73bface18 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/05 07:49 android13-5.15-lts 5cf73bface18 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/05 03:53 android13-5.15-lts 5cf73bface18 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/04 22:20 android13-5.15-lts 5cf73bface18 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/04 18:01 android13-5.15-lts 5cf73bface18 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/04 00:49 android13-5.15-lts 41b0e17cc2ca 76ad128c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/03 05:48 android13-5.15-lts 0d918fa8e88d 115ceea7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/03 02:53 android13-5.15-lts 0d918fa8e88d bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/02 16:01 android13-5.15-lts 0d918fa8e88d bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/02 13:35 android13-5.15-lts 0d918fa8e88d bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/02 12:10 android13-5.15-lts 0d918fa8e88d bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/02 11:59 android13-5.15-lts 0d918fa8e88d bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/02 05:53 android13-5.15-lts 0d918fa8e88d bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/01 23:02 android13-5.15-lts 0d918fa8e88d 091a06cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/01 19:08 android13-5.15-lts 0d918fa8e88d 091a06cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/07/01 04:42 android13-5.15-lts 0d918fa8e88d 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/30 16:52 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/30 11:14 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/30 10:11 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/30 04:53 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/30 02:02 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/29 23:41 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/29 22:18 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/29 20:09 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/29 16:31 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/29 13:05 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/29 11:47 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/29 07:04 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/28 16:09 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/28 07:46 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/28 03:04 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/28 00:15 android13-5.15-lts 0d918fa8e88d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/27 20:04 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/27 19:44 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/27 15:12 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/27 14:07 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/27 12:07 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/27 09:52 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/27 04:02 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/27 02:59 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/26 21:34 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/26 18:13 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/26 16:39 android13-5.15-lts 0d918fa8e88d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/26 12:37 android13-5.15-lts 0d918fa8e88d 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/26 10:46 android13-5.15-lts 0d918fa8e88d 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/26 03:52 android13-5.15-lts 0d918fa8e88d 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/26 02:45 android13-5.15-lts 0d918fa8e88d 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/26 01:11 android13-5.15-lts 0d918fa8e88d 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/25 20:18 android13-5.15-lts 0d918fa8e88d 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/25 14:31 android13-5.15-lts 0d918fa8e88d 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/25 08:02 android13-5.15-lts e678c93d43cc 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/25 02:33 android13-5.15-lts e678c93d43cc 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2025/06/24 09:43 android13-5.15-lts e678c93d43cc e2f27c35 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/05/20 09:13 android13-5.15-lts 19c0ed55a470 96689200 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2022/11/29 19:19 android13-5.15-lts d9d889009b78 579a3740 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
* Struck through repros no longer work on HEAD.