syzbot


INFO: task hung in linkwatch_event (2)
Status: fixed on 2022/05/13 11:13
Reported-by: syzbot+96ff6cfc4551fcc29342@syzkaller.appspotmail.com
Fix commit: 563fbefed46a cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
First crash: 802d, last: 24d

Cause bisection: introduced by (bisect log) :
commit 386d4716fd91869e07c731657f2cde5a33086516
Author: Luo bin <luobin9@huawei.com>
Date: Thu Feb 27 06:34:44 2020 +0000

  hinic: fix a bug of rss configuration

Crash: INFO: task hung in io_finish_async (log)
Repro: syz .config

Fix bisection: fixed by (bisect log) :
commit 563fbefed46ae4c1f70cffb8eb54c02df480b2c2
Author: Nguyen Dinh Phi <phind.uet@gmail.com>
Date: Wed Oct 27 17:37:22 2021 +0000

  cfg80211: call cfg80211_stop_ap when switch from P2P_GO type

similar bugs (7):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-414 INFO: task hung in linkwatch_event C 7 915d 1135d 0/1 public: reported C repro on 2019/04/10 16:14
android-44 INFO: task hung in linkwatch_event 6 1351d 1496d 0/2 auto-closed as invalid on 2019/03/05 13:11
upstream INFO: task hung in linkwatch_event C 82 943d 1555d 0/22 closed as dup on 2018/02/14 15:33
linux-4.14 INFO: task hung in linkwatch_event 5 619d 746d 0/1 auto-closed as invalid on 2021/01/05 01:42
linux-4.19 INFO: task hung in linkwatch_event (2) C 155 1d02h 799d 0/1 upstream: reported C repro on 2020/03/11 20:12
linux-4.19 INFO: task hung in linkwatch_event 3 952d 1066d 0/1 auto-closed as invalid on 2020/02/07 01:11
android-49 INFO: task hung in linkwatch_event 13 1114d 1131d 0/3 auto-closed as invalid on 2019/10/25 08:50

Sample crash report:

Crashes (1033):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/02/05 22:54 upstream dd86e7fa07a3 23a562df .config log report syz C INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-smack-root 2021/02/03 16:51 upstream 3aaf0a27ffc2 624dad51 .config log report syz C INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-root 2021/01/26 07:48 upstream f8ad8187c3b5 52e37319 .config log report syz C INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-root 2021/01/25 07:52 upstream e68061375f79 52e37319 .config log report syz C INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/03/31 11:53 linux-next 931294922e65 6a81331a .config log report syz C INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/03/25 10:28 linux-next 20f1b5f9c07c 607e3baf .config log report syz C INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2020/12/11 02:25 net-next a7105e3472bf f900b48c .config log report syz C
ci-upstream-kasan-gce-root 2021/06/18 11:34 upstream fd0aa1a4567d aba2b2fb .config log report syz INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/09/08 09:21 linux-next b2bb710d34d5 064c9eb7 .config log report syz INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-root 2020/08/23 11:41 upstream c3d8f220d012 1da71ab0 .config log report syz
ci-upstream-kasan-gce-selinux-root 2020/08/23 11:35 upstream c3d8f220d012 1da71ab0 .config log report syz
ci-upstream-kasan-gce-selinux-root 2020/04/25 09:49 upstream b4f633221f0a 03d97a1b .config log report syz
ci-upstream-kasan-gce-smack-root 2022/01/18 01:46 upstream 0c947b893d69 731a2d23 .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce 2022/01/12 19:01 upstream daadb3bd0e8d 44d1319a .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-selinux-root 2021/12/15 04:16 upstream 5472f14a3742 f752fb53 .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-selinux-root 2021/11/30 15:52 upstream d58071a8a76d 80270552 .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-root 2021/11/26 19:32 upstream a4849f6000e2 63eeac02 .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-smack-root 2021/11/14 07:50 upstream ccfff0a2bd2a 83f5c9b5 .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-selinux-root 2021/11/12 19:11 upstream 5833291ab6de 83f5c9b5 .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce 2021/11/09 10:50 upstream e851dfae4371 8ab17e57 .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce 2021/11/08 17:11 upstream 6b75d88fa81b d29682f1 .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce 2021/11/07 04:45 upstream 512b7931ad05 4c1be0be .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-smack-root 2021/11/05 12:13 upstream d4439a1189f9 4c1be0be .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-root 2021/11/02 22:46 upstream cc0356d6a02e 17f3edd2 .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-386 2021/12/04 19:18 upstream bbef3c7a63d2 a617004c .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-386 2021/10/30 21:22 upstream 119c85055d86 098b5d53 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2022/04/19 11:12 net 4cf35a2b627a c334415e .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2022/04/18 03:46 net 49aefd131739 8bcc32a6 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2022/02/15 19:17 net 032062f363b4 8b9ca619 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2022/01/08 11:20 net 6dc9a23e2906 2ca0d385 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2022/01/03 06:32 net 29262e1f773b e1768e9c .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2021/12/30 13:14 net f7397cd24c59 2e49f10d .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2021/12/21 23:26 net ac8c58f5b535 a938f0b8 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2021/12/04 04:41 net badd7857f5c9 a617004c .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2021/12/03 03:54 net a51e3ac43ddb 61f86278 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2021/11/24 12:02 net 619ca0d0108a 545ab074 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2021/11/24 08:01 net 619ca0d0108a 545ab074 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2021/11/01 17:53 net 6b278c0cb378 098b5d53 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-this-kasan-gce 2021/10/23 19:18 net 1f83b835a3ea 282f03fb .config log report info INFO: task hung in linkwatch_event
ci-upstream-bpf-kasan-gce 2021/09/28 22:50 bpf 79e2c3066675 d82cb927 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2022/01/27 23:48 net-next fbb8295248e1 64a8e201 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2022/01/26 08:41 net-next 6b0671a23dd6 2cbffd88 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2021/12/04 20:29 net-next ce83278f313c a617004c .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2021/12/01 09:18 net-next 23ea630f86c7 5fa3eacc .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2021/12/01 07:15 net-next 196073f9c44b 80270552 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2021/11/29 14:23 net-next 2f7ed29f2c54 63eeac02 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2021/11/29 03:28 net-next d40ce48cb3a6 63eeac02 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2021/11/28 11:55 net-next d40ce48cb3a6 63eeac02 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2021/11/24 00:29 net-next 2106efda785b 545ab074 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2021/11/17 01:21 net-next 62803fec52f8 cafff8b6 .config log report info INFO: task hung in linkwatch_event
ci-upstream-net-kasan-gce 2021/10/28 06:44 net-next 911e3a46fb38 be531bb4 .config log report info INFO: task hung in linkwatch_event
ci-upstream-bpf-next-kasan-gce 2021/10/03 22:53 bpf-next d636c8da2d60 db0f5787 .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2022/04/25 01:40 linux-next f1244c81da13 131df97d .config log report info INFO: task hung in linkwatch_event
ci2-upstream-usb 2022/03/06 03:12 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 98d107b84614 7bdd8b2c .config log report info INFO: task hung in linkwatch_event
ci2-upstream-usb 2022/01/15 02:23 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 455e73a07f6e 53e00b45 .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/12/07 12:17 linux-next 04fe99a8d936 0230ba3e .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/11/06 17:10 linux-next 6a37ebbe07bf 4c1be0be .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/11/06 05:48 linux-next 6a37ebbe07bf 4c1be0be .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/11/05 16:37 linux-next b477ae38e815 4c1be0be .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/10/21 07:45 linux-next 51dba6e335ff f111d03b .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/10/21 02:25 linux-next 51dba6e335ff f111d03b .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/10/21 00:58 linux-next 51dba6e335ff f111d03b .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/10/21 00:10 linux-next 51dba6e335ff f111d03b .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/10/20 22:57 linux-next 51dba6e335ff f111d03b .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/10/20 22:13 linux-next 51dba6e335ff f111d03b .config log report info INFO: task hung in linkwatch_event
ci-upstream-linux-next-kasan-gce-root 2021/10/20 14:02 linux-next 51dba6e335ff 418a00eb .config log report info INFO: task hung in linkwatch_event
ci-upstream-kasan-gce-root 2021/01/17 04:18 upstream 0da0a8a0a0e1 65a7a854 .config log report info
ci-upstream-net-kasan-gce 2020/03/08 04:06 net-next 425c075dcbb2 2e9971bb .config log report