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: 752d, last: 3h07m
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 1860d 2267d 15/28 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream missing-backport C done 493 8d11h 651d 0/3 upstream: reported C repro on 2023/03/11 08:51
upstream BUG: workqueue lockup (2) C 406 2416d 2574d 5/28 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 661d 2063d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2597d 2608d 3/28 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) kernel C done 9893 1h43m 1802d 0/28 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 5176 11h20m 656d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2360d 2413d 8/28 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream missing-backport C error 2587 3h00m 516d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 1925d 2081d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 655d 2069d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 1055d 1153d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1849d 2081d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport C unreliable 215 8d12h 654d 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 183s!
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=-20 stuck for 178s!
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=1/256 refcnt=2
    pending: neigh_periodic_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    in-flight: 20:gc_worker
    pending: neigh_periodic_work, 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 writeback: flags=0x4a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    in-flight: 45:wb_workfn
workqueue kblockd: flags=0x18
  pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
    pending: blk_mq_timeout_work
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
workqueue ext4-rsv-conversion: flags=0x2000a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=3
    pending: ext4_end_io_rsv_work
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=184s workers=3 idle: 60 6
pool 4: cpus=0-1 flags=0x4 nice=0 hung=185s workers=3 idle: 8 197

Crashes (2270):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/20 13:45 android13-5.15-lts b4bd207b0380 0f61b415 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/20 00:15 android13-5.15-lts b4bd207b0380 5905cb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/18 23:05 android13-5.15-lts b4bd207b0380 a0626d3a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/15 09:34 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/14 18:46 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/14 04:01 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/14 02:19 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/12 11:23 android13-5.15-lts 1f9202a6d83b 6f1b0fa8 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 05:59 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 00:25 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/08 18:50 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/08 12:50 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/08 08:53 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/07 22:33 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/07 07:14 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/06 15:35 android13-5.15-lts 431fb5556be3 946d28f0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/06 04:47 android13-5.15-lts 431fb5556be3 29f61fce .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/03 16:19 android13-5.15-lts fa1d8b6c5d4d 578925bc .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/01 17:36 android13-5.15-lts 548ca9fbf844 68914665 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/11/30 15:09 android13-5.15-lts 548ca9fbf844 68914665 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/11/30 08:48 android13-5.15-lts 548ca9fbf844 68914665 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/11/27 13:15 android13-5.15-lts 101e665d55a8 52b38cc1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/11/26 23:55 android13-5.15-lts 101e665d55a8 e9a9a9f2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/11/26 17:24 android13-5.15-lts 101e665d55a8 e9a9a9f2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/11/25 16:20 android13-5.15-lts 101e665d55a8 68da6d95 .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
2024/12/21 11:00 android13-5.15-lts b4bd207b0380 d7f584ee .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/20 16:31 android13-5.15-lts b4bd207b0380 0f61b415 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/20 03:01 android13-5.15-lts b4bd207b0380 5905cb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/19 12:30 android13-5.15-lts b4bd207b0380 1432fc84 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/17 02:17 android13-5.15-lts b4bd207b0380 eec85da6 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/16 08:22 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/16 01:00 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/15 05:19 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/12 13:54 android13-5.15-lts 1f9202a6d83b 6f1b0fa8 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/11 03:39 android13-5.15-lts 1f9202a6d83b cfc402b4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 20:06 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 11:07 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 02:26 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/07 10:02 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/07 04:07 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/01 15:52 android13-5.15-lts 548ca9fbf844 68914665 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/11/30 18:17 android13-5.15-lts 548ca9fbf844 68914665 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/11/30 16:46 android13-5.15-lts 548ca9fbf844 68914665 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/21 01:16 android13-5.15-lts b4bd207b0380 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/20 18:01 android13-5.15-lts b4bd207b0380 0f61b415 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/20 04:55 android13-5.15-lts b4bd207b0380 5905cb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/20 04:54 android13-5.15-lts b4bd207b0380 5905cb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/19 19:46 android13-5.15-lts b4bd207b0380 5905cb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/19 17:35 android13-5.15-lts b4bd207b0380 5905cb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/19 08:48 android13-5.15-lts b4bd207b0380 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/19 06:49 android13-5.15-lts b4bd207b0380 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/19 06:10 android13-5.15-lts b4bd207b0380 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/19 02:55 android13-5.15-lts b4bd207b0380 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/18 11:49 android13-5.15-lts b4bd207b0380 a0626d3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/18 10:01 android13-5.15-lts b4bd207b0380 a0626d3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/17 18:41 android13-5.15-lts b4bd207b0380 f93b2b55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/17 12:24 android13-5.15-lts b4bd207b0380 f93b2b55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/17 12:03 android13-5.15-lts b4bd207b0380 f93b2b55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/17 10:34 android13-5.15-lts b4bd207b0380 f93b2b55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/16 15:59 android13-5.15-lts b4bd207b0380 eec85da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/15 21:55 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/15 15:56 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/14 20:34 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/14 15:23 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/14 11:35 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/14 01:05 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/14 00:02 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/13 22:42 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/13 22:37 android13-5.15-lts 6f0de8f8a165 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/12 20:06 android13-5.15-lts 1f9202a6d83b 530e80f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue lockup
2024/12/12 17:20 android13-5.15-lts 1f9202a6d83b 530e80f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/12 12:26 android13-5.15-lts 1f9202a6d83b 6f1b0fa8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/12 04:17 android13-5.15-lts 1f9202a6d83b 6f1b0fa8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/12 03:15 android13-5.15-lts 1f9202a6d83b 6f1b0fa8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/11 13:05 android13-5.15-lts 1f9202a6d83b ff949d25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/11 11:36 android13-5.15-lts 1f9202a6d83b ff949d25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/11 00:58 android13-5.15-lts 1f9202a6d83b cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/10 22:32 android13-5.15-lts 1f9202a6d83b cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 23:54 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 22:18 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 19:12 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 17:53 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/09 07:03 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/08 17:18 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/08 12:36 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/08 04:14 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/08 02:04 android13-5.15-lts 431fb5556be3 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue lockup
2024/12/07 19:39 android13-5.15-lts 431fb5556be3 9ac0fdc6 .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.