syzbot


INFO: rcu detected stall in call_timer_fn (2)
Status: upstream: reported C repro on 2019/09/15 17:29
Reported-by: syzbot+f33388c0f89e31abe109@syzkaller.appspotmail.com
First crash: 694d, last: 6d14h

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: INFO: rcu detected stall in corrupted (log)
Repro: C syz .config

Fix bisection: failed (bisect log)
similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: rcu detected stall in call_timer_fn (2) 16 274d 548d 0/1 auto-closed as invalid on 2021/03/04 12:30
linux-4.14 INFO: rcu detected stall in call_timer_fn (2) 1 336d 336d 0/1 auto-closed as invalid on 2020/12/31 22:00
upstream INFO: rcu detected stall in call_timer_fn 2 1027d 1039d 0/22 closed as dup on 2019/01/02 16:26
linux-4.19 INFO: rcu detected stall in call_timer_fn 1 687d 687d 0/1 auto-closed as invalid on 2020/01/15 18:43
linux-4.14 INFO: rcu detected stall in call_timer_fn 5 461d 580d 0/1 auto-closed as invalid on 2020/08/29 09:07
linux-4.19 BUG: soft lockup in call_timer_fn 3 15d 26d 0/1 upstream: reported on 2021/07/10 02:48

Sample crash report:

Crashes (31):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2019/09/11 14:56 upstream 3120b9a6a3f7 a60cb4cd .config log report syz C
ci-upstream-bpf-kasan-gce 2020/09/01 08:18 bpf 3168c158ad35 d5a3ae1f .config log report syz C
ci-upstream-kasan-gce-smack-root 2021/07/30 03:08 upstream 7e96bf476270 c585c7b0 .config log report info INFO: rcu detected stall in call_timer_fn
ci-upstream-kasan-gce 2021/04/21 16:57 upstream 1fe5501ba1ab 95777977 .config log report info INFO: rcu detected stall in call_timer_fn
ci-upstream-kasan-gce 2021/02/10 18:19 upstream e0756cfc7d7c 2bd9619f .config log report info INFO: rcu detected stall in call_timer_fn
ci-upstream-kasan-gce 2021/02/05 03:15 upstream 5c279c4cf206 23a562df .config log report info INFO: rcu detected stall in call_timer_fn
ci-upstream-kasan-gce-root 2021/01/04 03:35 upstream e71ba9452f0b 79264ae3 .config log report info
ci-upstream-kasan-gce-root 2020/12/08 00:46 upstream cd796ed33450 51a9082e .config log report info
ci-upstream-kasan-gce-root 2020/12/03 09:36 upstream 34816d20f173 e6b0d314 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/11/22 15:46 upstream a349e4c65960 0d27f508 .config log report info
ci-upstream-kasan-gce 2020/10/07 14:55 upstream c85fb28b6f99 1880b4a9 .config log report info
ci-upstream-kasan-gce-root 2020/09/23 04:33 upstream eff48ddeab78 3e8f6c27 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/09/04 13:36 upstream e28f0104343d abf9ba4f .config log report
ci-upstream-kasan-gce 2020/08/29 21:59 upstream 4d41ead6ead9 d5a3ae1f .config log report
ci-upstream-kasan-gce-root 2020/08/27 18:29 upstream 15bc20c6af4c 816e0689 .config log report
ci-upstream-kasan-gce 2020/08/25 15:05 upstream 6a9dc5fd6170 344da168 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/23 19:04 upstream c3d8f220d012 cef5ae68 .config log report
ci-upstream-kasan-gce-root 2020/07/10 01:17 upstream 0bddd227f3dc bc238812 .config log report
ci-upstream-kasan-gce-root 2020/07/09 13:27 upstream 0bddd227f3dc bc238812 .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/07 08:45 upstream 7ae77150d94d e6b89e4e .config log report
ci-upstream-kasan-gce-smack-root 2020/05/15 08:12 upstream 8c1684bb81f1 2d572622 .config log report
ci-upstream-kasan-gce-smack-root 2020/03/24 21:07 upstream 76ccd234269b 68660b21 .config log report
ci-upstream-kasan-gce-smack-root 2020/03/14 14:34 upstream fffb08b37df9 749688d2 .config log report
ci-upstream-kasan-gce-smack-root 2020/02/18 10:23 upstream 11a48a5a18c6 1ce142dc .config log report
ci-upstream-kasan-gce-smack-root 2020/02/04 16:24 upstream 322bf2d3446a 93e5e335 .config log report
ci-upstream-kasan-gce-selinux-root 2020/02/03 08:30 upstream 46d6b7becb1d 93e5e335 .config log report
ci-upstream-kasan-gce 2020/01/26 06:11 upstream 2821e26f3a0a f4e7270e .config log report
ci-upstream-kasan-gce-selinux-root 2020/01/13 01:36 upstream 040a3c33623b 53faa9fe .config log report
ci-qemu-upstream 2019/11/29 10:50 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-upstream-kasan-gce-root 2019/09/28 08:47 upstream 8f744bdee4fe d8074e0b .config log report
ci-upstream-kasan-gce-386 2020/01/30 22:10 upstream 39bed42de2e7 5ed23f9a .config log report