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BUG: workqueue lockup

Status: fixed on 2017/11/11 01:37
Reported-by: syzbot+4e9e46806dc410690f9015656ec3d1d77afa6662@syzkaller.appspotmail.com
Fix commit: 93161922c658 tun/tap: sanitize TUNSETSNDBUF input
First crash: 2893d, last: 2871d
▶ ▼ Similar bugs (16)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block -1 C 47 2134d 2540d 15/29 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup missing-backport origin:upstream -1 C done 628 8d14h 924d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup origin:upstream missing-backport -1 C error 4144 4h26m 821d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) -1 C 406 2690d 2848d 5/29 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup -1 C 282 934d 2336d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup (5) net 1 C done 13402 2h14m 2076d 0/29 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) -1 C error 10500 1h44m 930d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) -1 C 1215 2634d 2687d 8/29 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream missing-backport -1 C error 3976 1d09h 790d 0/2 upstream: reported C repro on 2023/07/23 17:25
linux-6.6 BUG: workqueue lockup origin:upstream -1 C 13 6d10h 96d 0/2 upstream: reported C repro on 2025/06/17 05:08
android-414 BUG: workqueue lockup -1 C 114 2199d 2355d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup -1 C error 41 929d 2343d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup -1 C error 25 1329d 1427d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup -1 C 69 2123d 2354d 0/3 public: reported C repro on 2019/04/11 08:44
android-6-12 BUG: workqueue lockup -1 1 64d 64d 0/1 premoderation: reported on 2025/07/18 16:39
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport -1 C unreliable 337 5d05h 928d 0/3 upstream: reported C repro on 2023/03/07 17:51

Sample crash report:
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
    pending: cache_reap
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
    pending: vmstat_update
workqueue ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1
    pending: addrconf_dad_work

Crashes (172):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/10/28 13:09 upstream 11224e1fc40a 80c74880 .config console log report syz C ci-upstream-kasan-gce
2017/10/26 22:49 upstream 15f859ae5c43 80c74880 .config console log report syz C ci-upstream-kasan-gce-386
2017/10/26 20:21 upstream 4ed590271a65 6fd57ceb .config console log report syz C ci-upstream-kasan-gce-386
2017/10/26 14:43 upstream 4ed590271a65 6fd57ceb .config console log report syz C ci-upstream-kasan-gce-386
2017/10/26 14:09 upstream 4ed590271a65 6fd57ceb .config console log report syz C ci-upstream-kasan-gce-386
2017/10/21 19:04 upstream 9c323bff13f9 4d9c0713 .config console log report syz C ci-upstream-kasan-gce-386
2017/10/20 01:26 upstream 96f893abc87b 355f57c5 .config console log report syz C ci-upstream-kasan-gce-386
2017/10/20 00:47 upstream 96f893abc87b 355f57c5 .config console log report syz C ci-upstream-kasan-gce-386
2017/10/29 23:09 linux-next 36ef71cae353 e511d9f8 .config console log report syz C ci-upstream-next-kasan-gce
2017/10/29 14:55 linux-next 36ef71cae353 e511d9f8 .config console log report syz C ci-upstream-next-kasan-gce
2017/10/29 12:26 linux-next 36ef71cae353 e511d9f8 .config console log report syz C ci-upstream-next-kasan-gce
2017/10/28 22:16 linux-next 36ef71cae353 e511d9f8 .config console log report syz C ci-upstream-next-kasan-gce
2017/10/28 14:46 mmots 0f611fb6dcc0 e0a2b195 .config console log report syz C ci-upstream-mmots-kasan-gce
2017/10/28 13:50 linux-next 36ef71cae353 e511d9f8 .config console log report syz C ci-upstream-next-kasan-gce
2017/10/27 20:48 mmots 0f611fb6dcc0 e0a2b195 .config console log report syz C ci-upstream-mmots-kasan-gce
2017/10/26 23:14 mmots 0f611fb6dcc0 e0a2b195 .config console log report syz C ci-upstream-mmots-kasan-gce
2017/10/26 19:42 linux-next 36ef71cae353 e511d9f8 .config console log report syz C skylake-linux-next-kasan-qemu
2017/10/26 15:36 mmots 0f611fb6dcc0 e0a2b195 .config console log report syz C ci-upstream-mmots-kasan-gce
2017/10/26 15:11 linux-next 36ef71cae353 e511d9f8 .config console log report syz C ci-upstream-next-kasan-gce
2017/10/21 16:46 linux-next 36ef71cae353 e511d9f8 .config console log report syz C ci-upstream-next-kasan-gce
2017/10/20 00:50 mmots 3ac81ebcbbb3 355f57c5 .config console log report syz C ci-upstream-mmots-kasan-gce
2017/10/20 00:14 linux-next 36ef71cae353 e511d9f8 .config console log report syz C ci-upstream-next-kasan-gce
2017/10/27 21:16 upstream 15f859ae5c43 80c74880 .config console log report syz ci-upstream-kasan-gce-386
2017/10/28 15:56 upstream 11224e1fc40a 80c74880 .config console log report ci-upstream-kasan-gce
2017/10/20 22:24 upstream ce43f4fd6f10 4d9c0713 .config console log report ci-upstream-kasan-gce-386
2017/11/11 01:36 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/11 00:59 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/11 00:47 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/11 00:37 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/11 00:13 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/11 00:08 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/11 00:00 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 23:54 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 23:35 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 22:05 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 21:29 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 20:40 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 20:08 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 20:05 net-next-old 54985120a1c4 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 17:41 net-next-old 4dc6758d7824 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 17:32 net-next-old 4dc6758d7824 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/11/10 17:09 net-next-old 4dc6758d7824 e0a2b195 .config console log report ci-upstream-net-kasan-gce
2017/10/19 23:25 linux-next 36ef71cae353 e511d9f8 .config console log report ci-upstream-next-kasan-gce
* Struck through repros no longer work on HEAD.