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: 448d, last: 1d23h
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 1556d 1963d 15/26 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream C 116 16h29m 347d 0/3 upstream: reported C repro on 2023/03/11 08:51
upstream BUG: workqueue lockup (2) C 406 2113d 2271d 5/26 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 357d 1759d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2293d 2304d 3/26 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) kernel C done 3392 9m 1498d 0/26 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 301 20h21m 352d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2057d 2109d 8/26 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream C error 139 2d03h 213d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 1621d 1777d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 351d 1765d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 751d 850d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1545d 1777d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream C 72 25d 351d 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 259s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 259s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 260s!
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=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=2/256 refcnt=3
    pending: neigh_periodic_work, check_lifetime
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: neigh_periodic_work, gc_worker, reg_check_chans_work
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 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
    in-flight: 54: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
pool 1: cpus=0 node=0 flags=0x0 nice=-20 hung=0s workers=2 idle: 7

Crashes (207):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/02/19 18:53 android13-5.15-lts 993bed180178 3af7dd65 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/02/16 17:32 android13-5.15-lts 993bed180178 578f7538 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/02/14 13:57 android13-5.15-lts 3802b45594e1 d902085f .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/27 13:59 android13-5.15-lts 1c3a1f32bcbd cc4a4020 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/27 11:21 android13-5.15-lts 1c3a1f32bcbd cc4a4020 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/24 09:01 android13-5.15-lts 1c3a1f32bcbd 1e153dc8 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/24 06:08 android13-5.15-lts 1c3a1f32bcbd 1e153dc8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/24 03:09 android13-5.15-lts 1c3a1f32bcbd 1e153dc8 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/24 00:38 android13-5.15-lts 1c3a1f32bcbd 1e153dc8 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/23 15:54 android13-5.15-lts 1c3a1f32bcbd 1c0ecc51 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/12 10:43 android13-5.15-lts ea2937bdd12f dda5a988 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/11 05:04 android13-5.15-lts ea2937bdd12f 04815ef1 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/06 10:57 android13-5.15-lts 92ec34b6c034 d0304e9c .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/05 04:04 android13-5.15-lts 92ec34b6c034 28c42cff .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/02 09:38 android13-5.15-lts 28e3f5851a99 fb427a07 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/30 21:16 android13-5.15-lts 28e3f5851a99 fb427a07 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/28 21:45 android13-5.15-lts 28e3f5851a99 fb427a07 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/28 17:57 android13-5.15-lts 28e3f5851a99 fb427a07 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/25 21:29 android13-5.15-lts 28e3f5851a99 fb427a07 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/20 14:26 android13-5.15-lts 377690365601 3ad490ea .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/20 07:51 android13-5.15-lts 377690365601 3ad490ea .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/17 12:40 android13-5.15-lts 05ef4ccb5774 3222d10c .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/13 12:37 android13-5.15-lts 05ef4ccb5774 ebcad15c .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/13 09:59 android13-5.15-lts 05ef4ccb5774 ebcad15c .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/10 23:03 android13-5.15-lts b1355f1607d5 28b24332 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/10 10:40 android13-5.15-lts b1355f1607d5 28b24332 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/07 08:20 android13-5.15-lts 0e7c7966689d e3299f55 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/07 05:53 android13-5.15-lts 0e7c7966689d e3299f55 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/05 13:10 android13-5.15-lts 0e7c7966689d f819d6f7 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/05 09:25 android13-5.15-lts 0e7c7966689d f819d6f7 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/05 06:08 android13-5.15-lts 0e7c7966689d f819d6f7 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/01 22:48 android13-5.15-lts eb99a642b7e6 f819d6f7 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/01 20:15 android13-5.15-lts eb99a642b7e6 f819d6f7 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/01 15:45 android13-5.15-lts eb99a642b7e6 f819d6f7 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/01 13:20 android13-5.15-lts eb99a642b7e6 f819d6f7 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/11/16 00:58 android13-5.15-lts 61cfd264993d cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/11/14 12:12 android13-5.15-lts 61cfd264993d cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/11/14 07:18 android13-5.15-lts 61cfd264993d cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/11/04 22:53 android13-5.15-lts 61cfd264993d 500bfdc4 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/10/29 20:08 android13-5.15-lts 61cfd264993d 3c418d72 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/10/27 13:36 android13-5.15-lts 558a2461986e bf285f0c .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/10/22 16:44 android13-5.15-lts 754f8cc9b7de 361b23dc .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
2023/11/01 21:49 android13-5.15-lts 61cfd264993d 69904c9f .config console log report syz [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/02/16 07:33 android13-5.15-lts 993bed180178 578f7538 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/02/09 18:25 android13-5.15-lts 3802b45594e1 77b23aa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/02/05 23:44 android13-5.15-lts 3802b45594e1 6404acf9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/02/01 14:32 android13-5.15-lts 1c3a1f32bcbd 81024119 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/31 09:44 android13-5.15-lts 1c3a1f32bcbd 373b66cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/30 11:03 android13-5.15-lts 1c3a1f32bcbd 991a98f4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/01/24 15:09 android13-5.15-lts 1c3a1f32bcbd 1e153dc8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/23 18:53 android13-5.15-lts 1c3a1f32bcbd 1e153dc8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/21 21:51 android13-5.15-lts 1c3a1f32bcbd 9bd8dcda .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/21 15:40 android13-5.15-lts 1c3a1f32bcbd 9bd8dcda .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/19 18:56 android13-5.15-lts 1c3a1f32bcbd 9bd8dcda .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/19 17:13 android13-5.15-lts 1c3a1f32bcbd 9bd8dcda .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/19 00:44 android13-5.15-lts 1c3a1f32bcbd 21772ce4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/18 15:21 android13-5.15-lts 1c3a1f32bcbd 239abf84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/16 23:01 android13-5.15-lts c541149e0f52 2a7bcc7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/15 10:31 android13-5.15-lts 1e6a2d06e944 551587c1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/12 17:42 android13-5.15-lts ea2937bdd12f 551587c1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/11 06:53 android13-5.15-lts ea2937bdd12f 00f3cc59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/10 18:45 android13-5.15-lts ea2937bdd12f 04815ef1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/07 15:13 android13-5.15-lts 92ec34b6c034 d0304e9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/05 22:58 android13-5.15-lts 92ec34b6c034 d0304e9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/03 15:47 android13-5.15-lts 1370e896a3b8 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/01/02 15:26 android13-5.15-lts 28e3f5851a99 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/28 20:21 android13-5.15-lts 28e3f5851a99 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/28 00:04 android13-5.15-lts 28e3f5851a99 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/25 14:35 android13-5.15-lts 28e3f5851a99 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/25 06:21 android13-5.15-lts 28e3f5851a99 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/22 09:58 android13-5.15-lts 377690365601 4f9530a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/20 17:15 android13-5.15-lts 377690365601 de21eb89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/19 09:41 android13-5.15-lts 05ef4ccb5774 3ad490ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/19 08:08 android13-5.15-lts 05ef4ccb5774 3ad490ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/17 23:21 android13-5.15-lts 05ef4ccb5774 3222d10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/13 19:55 android13-5.15-lts 05ef4ccb5774 3222d10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/12 12:33 android13-5.15-lts 05ef4ccb5774 ebcad15c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/12 09:02 android13-5.15-lts 05ef4ccb5774 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/09 19:37 android13-5.15-lts b1355f1607d5 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/08 18:41 android13-5.15-lts b1355f1607d5 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/08 14:50 android13-5.15-lts b1355f1607d5 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/08 01:49 android13-5.15-lts 0e7c7966689d 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/07 11:52 android13-5.15-lts 0e7c7966689d 0a02ce36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/06 20:42 android13-5.15-lts 0e7c7966689d e3299f55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/06 17:39 android13-5.15-lts 0e7c7966689d e3299f55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/06 16:37 android13-5.15-lts 0e7c7966689d e3299f55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/05 21:41 android13-5.15-lts 0e7c7966689d 858d62d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/05 19:33 android13-5.15-lts 0e7c7966689d 858d62d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2023/12/03 21:25 android13-5.15-lts 0e7c7966689d f819d6f7 .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.