syzbot


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: 598d, last: 1d04h
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 (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block C 47 1706d 2112d 15/27 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream C 270 9h21m 496d 0/3 upstream: reported C repro on 2023/03/11 08:51
upstream BUG: workqueue lockup (2) C 406 2262d 2420d 5/27 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 507d 1908d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2443d 2453d 3/27 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) kernfs C done 5105 1h04m 1648d 0/27 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 1970 22h15m 502d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2206d 2259d 8/27 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream C error 1019 1d02h 362d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 1771d 1927d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 501d 1915d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 901d 999d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1695d 1926d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream C 154 15d 500d 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 205s!
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_periodic_work, neigh_periodic_work, gc_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: 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 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 (1005):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/23 09:59 android13-5.15-lts 85445b5a2107 edc5149a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/21 14:45 android13-5.15-lts 85445b5a2107 dac2aa43 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/20 19:34 android13-5.15-lts 85445b5a2107 dac2aa43 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/20 10:29 android13-5.15-lts 85445b5a2107 41b7e219 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/09 21:29 android13-5.15-lts 79bd336c7a94 82c05ab8 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/07 03:07 android13-5.15-lts 79bd336c7a94 121701b6 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/03 16:52 android13-5.15-lts 79bd336c7a94 0aba2352 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/03 08:21 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/03 00:13 android13-5.15-lts 424f92bcbe8f 3113787f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/02 09:53 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/02 07:10 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/01 12:39 android13-5.15-lts 424f92bcbe8f 3113787f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/01 08:25 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/06/01 05:18 android13-5.15-lts 424f92bcbe8f 3113787f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/29 15:33 android13-5.15-lts 424f92bcbe8f 34889ee3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/27 09:55 android13-5.15-lts 424f92bcbe8f a10a183e .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/26 22:29 android13-5.15-lts 424f92bcbe8f a10a183e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/25 00:21 android13-5.15-lts 424f92bcbe8f a10a183e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/05/23 20:05 android13-5.15-lts 5d96939590c0 4c2072ee .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/21 05:34 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/21 02:55 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/21 00:22 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/20 21:44 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/20 13:18 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/17 23:04 android13-5.15-lts 5d96939590c0 a12e99e7 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/17 02:21 android13-5.15-lts 5d96939590c0 c2e07261 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/16 10:02 android13-5.15-lts 5d96939590c0 ef5d53ed .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/14 15:13 android13-5.15-lts 5d96939590c0 fdb4c10c .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/14 11:49 android13-5.15-lts 5d96939590c0 fdb4c10c .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/13 09:06 android13-5.15-lts 5d96939590c0 9026e142 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/12 08:15 android13-5.15-lts 5d96939590c0 9026e142 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/11 05:02 android13-5.15-lts 5d96939590c0 f7c35481 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/09 22:22 android13-5.15-lts 5d96939590c0 05079661 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/05/04 06:00 android13-5.15-lts 5d96939590c0 610f2a54 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/04/30 06:26 android13-5.15-lts 5d96939590c0 f10afd69 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/04/20 15:36 android13-5.15-lts ad06eaf051cd af24b050 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/04/08 19:41 android13-5.15-lts 993bed180178 53df08b6 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/04/01 07:53 android13-5.15-lts 993bed180178 6baf5069 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/02/29 18:52 android13-5.15-lts 993bed180178 352ab904 .config console log report syz 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
2024/06/23 04:22 android13-5.15-lts 85445b5a2107 edc5149a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/19 02:53 android13-5.15-lts db06c48ab67e ee4e11c8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/19 01:12 android13-5.15-lts db06c48ab67e 71884c12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/18 11:47 android13-5.15-lts db06c48ab67e 0f902625 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/18 10:55 android13-5.15-lts db06c48ab67e 0f902625 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/18 09:48 android13-5.15-lts db06c48ab67e 0f902625 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/18 08:33 android13-5.15-lts db06c48ab67e 0f902625 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/18 05:40 android13-5.15-lts db06c48ab67e 0f902625 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/18 02:20 android13-5.15-lts db06c48ab67e 0f902625 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/18 01:20 android13-5.15-lts db06c48ab67e 0f902625 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/17 22:34 android13-5.15-lts db06c48ab67e 0f902625 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/17 20:11 android13-5.15-lts db06c48ab67e 0f902625 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/15 20:01 android13-5.15-lts db06c48ab67e e8709b21 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/14 18:03 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/14 17:45 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/14 12:28 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/14 09:39 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/14 08:15 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/14 05:43 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/13 23:48 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/13 03:45 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/13 00:20 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/12 20:38 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/12 09:54 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/12 01:05 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/11 19:45 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/11 18:42 android13-5.15-lts db06c48ab67e eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/11 07:55 android13-5.15-lts db06c48ab67e c699c2eb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/11 05:37 android13-5.15-lts db06c48ab67e c699c2eb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/10 16:52 android13-5.15-lts db06c48ab67e 6f7fa383 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/10 15:09 android13-5.15-lts db06c48ab67e bc144f9a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/09 13:39 android13-5.15-lts db06c48ab67e 79d68ada .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/08 22:38 android13-5.15-lts db06c48ab67e cde64f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/08 21:47 android13-5.15-lts db06c48ab67e cde64f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/08 21:04 android13-5.15-lts db06c48ab67e cde64f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/08 20:41 android13-5.15-lts db06c48ab67e cde64f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/08 19:39 android13-5.15-lts db06c48ab67e cde64f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/08 19:10 android13-5.15-lts db06c48ab67e cde64f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/08 18:10 android13-5.15-lts db06c48ab67e cde64f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/08 12:56 android13-5.15-lts db06c48ab67e cde64f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/08 12:32 android13-5.15-lts db06c48ab67e cde64f7d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/08 10:40 android13-5.15-lts db06c48ab67e 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/07/08 09:23 android13-5.15-lts 9044d25b8ff5 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/08 08:21 android13-5.15-lts 9044d25b8ff5 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/07 11:15 android13-5.15-lts 9044d25b8ff5 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/07/07 08:28 android13-5.15-lts 9044d25b8ff5 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 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.