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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: 308d, last: 2d06h
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 1416d 1823d 16/25 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream C 69 4d07h 207d 0/3 upstream: reported C repro on 2023/03/11 08:51
upstream BUG: workqueue lockup (2) C 406 1972d 2131d 6/25 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 217d 1619d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2153d 2164d 3/25 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) C done 1355 1h25m 1358d 0/25 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 109 1d10h 212d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 1917d 1969d 9/25 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream C error 32 3d15h 72d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 1481d 1637d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 211d 1625d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 611d 710d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1405d 1637d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream C 42 4d07h 210d 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 189s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 184s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 183s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 189s!
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: 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 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 0: cpus=0 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 (84):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/25 05:14 android13-5.15-lts ea586874d2f9 0b6a67ac .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/19 08:15 android13-5.15-lts ea586874d2f9 0b6a67ac .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/19 05:10 android13-5.15-lts ea586874d2f9 0b6a67ac .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/10 09:11 android13-5.15-lts ea586874d2f9 6654cf89 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/10 06:23 android13-5.15-lts ea586874d2f9 6654cf89 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/06 12:30 android13-5.15-lts 1317bd27a72f 0b6286dc .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
2023/07/23 21:41 android13-5.15-lts 879959450ec7 27cbe77f .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/22 17:29 android13-5.15-lts ea586874d2f9 0b6a67ac .config strace log report syz [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/10/02 10:42 android13-5.15-lts ea586874d2f9 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/10/01 07:22 android13-5.15-lts ea586874d2f9 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/30 09:34 android13-5.15-lts ea586874d2f9 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/27 13:27 android13-5.15-lts ea586874d2f9 2895a507 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/22 01:23 android13-5.15-lts ea586874d2f9 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/21 04:53 android13-5.15-lts ea586874d2f9 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/16 12:06 android13-5.15-lts ea586874d2f9 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/09/06 06:06 android13-5.15-lts 1317bd27a72f 0b6286dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/08/30 02:23 android13-5.15-lts 83c56fbab45d ce731e62 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/08/27 06:40 android13-5.15-lts 83c56fbab45d 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/08/24 10:07 android13-5.15-lts 1463976ddc64 4d7ae7ab .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/08/21 21:05 android13-5.15-lts 1463976ddc64 6b415825 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/08/07 04:00 android13-5.15-lts 748fd0d9ca0f 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/08/05 13:27 android13-5.15-lts 748fd0d9ca0f 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/07/27 16:54 android13-5.15-lts d567dc0a2c02 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/07/27 13:37 android13-5.15-lts d567dc0a2c02 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/07/25 09:39 android13-5.15-lts 8523417a404f 3b91ad04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/07/23 12:06 android13-5.15-lts 879959450ec7 27cbe77f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/07/14 16:17 android13-5.15-lts 879959450ec7 d624500f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/07/06 09:34 android13-5.15-lts 879959450ec7 ba5dba36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/06/28 07:30 android13-5.15-lts 241da2ad5601 4cd5bb25 .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
2023/05/01 17:36 android13-5.15-lts 6d40cb68a657 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/04/30 16:36 android13-5.15-lts 6d40cb68a657 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/04/03 05:52 android13-5.15-lts 7364b7abbafb 41147e3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/04/02 14:42 android13-5.15-lts 7364b7abbafb f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/03/31 17:05 android13-5.15-lts 7364b7abbafb f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/03/31 10:33 android13-5.15-lts 7364b7abbafb f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/03/30 17:16 android13-5.15-lts 7364b7abbafb f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/03/28 08:55 android13-5.15-lts fa7bbebb182b 47f3aaf1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/03/26 00:12 android13-5.15-lts 5448b2fda85f fbf0499a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/03/15 11:23 android13-5.15-lts 5448b2fda85f 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/03/11 09:07 android13-5.15-lts 5448b2fda85f 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/03/01 16:06 android13-5.15-lts 5448b2fda85f ef65e6cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/22 18:30 android13-5.15-lts 5448b2fda85f 9f1e2cb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/20 05:05 android13-5.15-lts 5448b2fda85f bcdf85f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/15 21:09 android13-5.15-lts 5020746bff95 6be0f1f5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/15 04:59 android13-5.15-lts 5020746bff95 e62ba3c1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/14 15:52 android13-5.15-lts 5020746bff95 93ae7e0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/14 02:06 android13-5.15-lts 5020746bff95 93ae7e0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/14 01:01 android13-5.15-lts 5020746bff95 93ae7e0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/14 00:56 android13-5.15-lts 5020746bff95 93ae7e0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/12 23:04 android13-5.15-lts 5020746bff95 93e26d60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/12 08:06 android13-5.15-lts 5020746bff95 93e26d60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/12 02:44 android13-5.15-lts 5020746bff95 93e26d60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/02/07 17:08 android13-5.15-lts 5020746bff95 5bc3be51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/01/09 03:35 android13-5.15-lts c73b4619ad86 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2023/01/07 07:06 android13-5.15-lts c73b4619ad86 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2022/12/28 15:29 android13-5.15-lts c73b4619ad86 44712fbc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2022/12/19 12:42 android13-5.15-lts c73b4619ad86 05494336 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2022/12/18 03:57 android13-5.15-lts c73b4619ad86 05494336 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf 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.