syzbot


BUG: workqueue lockup

Status: closed as invalid on 2022/02/22 17:18
Reported-by: syzbot+fc281927ab42f4732c76@syzkaller.appspotmail.com
First crash: 858d, last: 760d
Cause bisection: failed (error log, bisect log)
  
Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block C 47 1565d 1972d 15/26 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup origin:upstream C 119 3d00h 356d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup origin:upstream missing-backport C error 219 9h12m 252d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) C 406 2121d 2280d 5/26 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 366d 1768d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2302d 2313d 3/26 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) kernel C done 3531 5h25m 1507d 0/26 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 319 9h28m 361d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 2065d 2118d 8/26 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream C error 145 1d03h 221d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 1630d 1786d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 360d 1774d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-49 BUG: workqueue lockup C 69 1554d 1786d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream C 78 2h42m 359d 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 230s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 222s!
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: perf_sched_delayed
  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=0x5 nice=0 active=1/512 refcnt=3
    in-flight: 9:toggle_allocation_gate
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
    pending: neigh_periodic_work, gc_worker, check_lifetime
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    in-flight: 24:vmstat_update
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    in-flight: 67:vmstat_update
workqueue writeback: flags=0x4a
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=5 MAYDAY
    in-flight: 27(RESCUER):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 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=230s workers=2 idle: 5
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=222s workers=2 idle: 124
pool 4: cpus=0-1 flags=0x5 nice=0 hung=83s workers=2 manager: 360

Crashes (25):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/10/25 07:24 android12-5.10-lts 234d53d2bb60 4f0000ee .config console log report syz C ci2-android-5-10 BUG: workqueue lockup
2021/10/24 20:55 android12-5.10-lts 234d53d2bb60 282f03fb .config console log report syz C ci2-android-5-10 BUG: workqueue lockup
2021/10/26 09:04 android12-5.10-lts 234d53d2bb60 c1132b49 .config console log report syz ci2-android-5-10 BUG: workqueue lockup
2022/01/30 22:43 android12-5.10-lts 0347b1658399 495e00c5 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2022/01/13 12:34 android12-5.10-lts d605f2f30d54 44d1319a .config console log report info ci2-android-5-10 BUG: workqueue lockup
2022/01/03 11:41 android12-5.10-lts 9b28b48fb343 e1768e9c .config console log report info ci2-android-5-10 BUG: workqueue lockup
2022/01/02 11:59 android12-5.10-lts 9b28b48fb343 e1768e9c .config console log report info ci2-android-5-10 BUG: workqueue lockup
2022/01/01 17:27 android12-5.10-lts 9b28b48fb343 e1768e9c .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/31 05:30 android12-5.10-lts 9b28b48fb343 36bd2e48 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/26 23:32 android12-5.10-lts c4d08791d941 e4f103c4 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/23 13:38 android12-5.10-lts c4d08791d941 6caa12e4 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/21 23:04 android12-5.10-lts c4d08791d941 6caa12e4 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/18 21:07 android12-5.10-lts afc997898ece 44068e19 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/18 03:35 android12-5.10-lts afc997898ece 44068e19 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/17 10:42 android12-5.10-lts afc997898ece 44068e19 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/16 06:25 android12-5.10-lts afc997898ece 572bcb40 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/16 00:02 android12-5.10-lts afc997898ece 572bcb40 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/13 03:46 android12-5.10-lts e2aed161fc26 49ca1f59 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/12 05:24 android12-5.10-lts e2aed161fc26 49ca1f59 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/12/04 11:54 android12-5.10-lts bc8ae0e2afaf a617004c .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/11/19 11:52 android12-5.10-lts 76698ea35fd3 31a30fc0 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/11/17 10:43 android12-5.10-lts 76698ea35fd3 cafff8b6 .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/11/06 20:15 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/10/27 12:35 android12-5.10-lts 4944ec82ebb9 373bf66b .config console log report info ci2-android-5-10 BUG: workqueue lockup
2021/10/24 15:19 android12-5.10-lts 234d53d2bb60 282f03fb .config console log report info ci2-android-5-10 BUG: workqueue lockup
* Struck through repros no longer work on HEAD.