syzbot


INFO: task hung in synchronize_rcu (3)
Status: upstream: reported C repro on 2020/07/22 18:22
Reported-by: syzbot+0c6da80218456f1edc36@syzkaller.appspotmail.com
First crash: 600d, last: 3d08h

Cause bisection: introduced by (bisect log) :
commit 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
Author: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Date: Sat Sep 29 00:59:43 2018 +0000

  tc: Add support for configuring the taprio scheduler

Crash: INFO: rcu detected stall in smp_call_function (log)
Repro: C syz .config
similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-49 INFO: task hung in synchronize_rcu 1 602d 602d 0/3 auto-closed as invalid on 2020/03/28 16:57
linux-4.14 INFO: task hung in synchronize_rcu C error 113 19d 624d 0/1 upstream: reported C repro on 2019/11/07 04:32
linux-4.19 INFO: task hung in synchronize_rcu 24 32d 623d 0/1 upstream: reported on 2019/11/08 21:27
upstream INFO: task hung in synchronize_rcu syz done 1206 602d 628d 15/22 fixed on 2019/11/29 15:48
android-414 INFO: task hung in synchronize_rcu 1 620d 620d 0/1 auto-closed as invalid on 2020/03/10 10:42
upstream INFO: task hung in synchronize_rcu (2) 8 601d 602d 0/22 closed as invalid on 2019/11/30 16:54

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-386 2020/11/07 08:02 upstream 659caaf65dc9 21f1765e .config log syz C
ci-upstream-kasan-gce-386 2020/08/21 00:30 upstream da2968ff879b 21f1765e .config log syz C
Crashes (253):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-386 2020/07/22 00:02 upstream 4fa640dc5230 21f1765e .config log report syz C
ci-upstream-kasan-gce-root 2021/07/15 07:20 upstream 8096acd7442e b9a2f64e .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-selinux-root 2021/07/07 04:26 upstream 3dbdb38e2869 cca78469 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce 2021/06/24 01:22 upstream 7266f2030eb0 fe4ab389 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-smack-root 2021/06/20 10:19 upstream 913ec3c22ef4 aba2b2fb .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-selinux-root 2021/05/25 17:37 upstream a050a6d2b7e8 93d3a9f6 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-root 2021/05/24 18:28 upstream c4681547bcce 3c7fef33 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce 2021/05/22 01:48 upstream 79a106fc6585 3c7fef33 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-smack-root 2021/05/14 08:27 upstream 315d99318179 8bdd5343 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-selinux-root 2021/05/08 14:01 upstream d2b6f8a17919 bc5434be .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce 2021/04/24 12:38 upstream e77a830c8297 17f0b706 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-selinux-root 2021/02/25 03:46 upstream 719bbd4a509f fcc6d71b .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-386 2021/06/13 07:39 upstream 8ecfa36cd4db 1ba81399 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-386 2021/02/26 18:56 upstream 2c87f7a38f93 4c37c133 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-net-this-kasan-gce 2021/07/03 08:37 net dbe69e433722 55aa55c2 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-net-this-kasan-gce 2021/06/20 13:08 net dda2626b86c2 aba2b2fb .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/06/19 17:36 bpf 61e8aeda9398 aba2b2fb .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/06/18 06:12 bpf da5ac772cfe2 aba2b2fb .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/06/16 03:58 bpf a4f0377db125 990d3cbe .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/06/15 03:39 bpf 973377ffe814 1ba81399 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-net-this-kasan-gce 2021/06/13 09:17 net f4cdcae03f9c 1ba81399 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-net-this-kasan-gce 2021/05/14 04:25 net a93a0a15876d 80f9b418 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/05/11 23:37 bpf bbd6f0a94813 b3c3bb8e .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/04/28 09:20 bpf b02265429681 805b5003 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/04/24 17:20 bpf b02265429681 17f0b706 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/04/24 10:55 bpf b02265429681 17f0b706 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/04/10 10:42 bpf afd0be729953 bfeda1b1 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/04/09 23:56 bpf afd0be729953 6a81331a .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/04/08 05:06 bpf 144748eb0c44 6a81331a .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-kasan-gce 2021/02/25 03:44 bpf f566aac4e053 fcc6d71b .config log report info INFO: task hung in synchronize_rcu
ci-upstream-net-kasan-gce 2021/07/13 09:08 net-next 5e437416ff66 f415556d .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/06/11 08:04 bpf-next 380afe720896 1ba81399 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/06/05 10:37 bpf-next cf68fa431d5d 500c2339 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/06/04 01:00 bpf-next 56b8b7f9533b 0740de69 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-net-kasan-gce 2021/05/24 07:06 net-next 5d6c3d91ad72 3c7fef33 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-net-kasan-gce 2021/05/19 22:11 net-next 86544c3de6a2 a343ba6b .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/05/09 06:37 bpf-next 3733bfbbdd28 bc5434be .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/05/02 00:51 bpf-next 3733bfbbdd28 77e2b668 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/05/01 00:54 bpf-next 3733bfbbdd28 77e2b668 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/04/25 04:56 bpf-next 350a62ca065b 17f0b706 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/04/20 20:35 bpf-next 69443c47305e c0ced557 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/04/18 12:14 bpf-next cdf0e80e9fbe 7e2b734b .config log report info INFO: task hung in synchronize_rcu
ci-upstream-net-kasan-gce 2021/04/17 19:46 net-next e7ad33fa7bc5 7e2b734b .config log report info INFO: task hung in synchronize_rcu
ci-upstream-net-kasan-gce 2021/04/08 05:29 net-next 0b35e0deb5be 6a81331a .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/04/03 09:37 bpf-next 007bdc12d4b4 6a81331a .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/03/28 16:29 bpf-next 36e798516078 a8529b82 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/03/03 08:46 bpf-next 85e142cb42a1 e5b64d68 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/03/02 05:30 bpf-next 85e142cb42a1 183afb6c .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/02/19 00:05 bpf-next 7b1e385c9a48 14052202 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-bpf-next-kasan-gce 2021/02/08 19:50 bpf-next 23a2d70c7a2f 2ce644fc .config log report info INFO: task hung in synchronize_rcu
ci-upstream-linux-next-kasan-gce-root 2021/07/20 19:46 linux-next c1a6d08348fc 1b201b48 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-linux-next-kasan-gce-root 2021/05/23 02:01 linux-next a1f92694393a 3c7fef33 .config log report info INFO: task hung in synchronize_rcu
ci-upstream-linux-next-kasan-gce-root 2021/04/14 06:35 linux-next dcf1b51d6b2a a184b83e .config log report info INFO: task hung in synchronize_rcu
ci-upstream-kasan-gce-root 2019/12/01 07:56 upstream 32ef9553635a a76bf83f .config log report
ci-upstream-bpf-next-kasan-gce 2021/01/16 01:18 bpf-next eed6a9a9571b 65a7a854 .config log report info