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: 589d, last: 1d18h

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 (5):
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 169d 444d 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 232d 232d 0/1 auto-closed as invalid on 2020/12/31 22:00
upstream INFO: rcu detected stall in call_timer_fn 2 923d 935d 0/22 closed as dup on 2019/01/02 16:26
linux-4.19 INFO: rcu detected stall in call_timer_fn 1 583d 583d 0/1 auto-closed as invalid on 2020/01/15 18:43
linux-4.14 INFO: rcu detected stall in call_timer_fn 5 357d 476d 0/1 auto-closed as invalid on 2020/08/29 09:07

Sample crash report:

Crashes (30):
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 3120b9a6 a60cb4cd .config log report syz C
ci-upstream-bpf-kasan-gce 2020/09/01 08:18 bpf 3168c158 d5a3ae1f .config log report syz C
ci-upstream-kasan-gce 2021/04/21 16:57 upstream 1fe5501b 95777977 .config log report info INFO: rcu detected stall in call_timer_fn
ci-upstream-kasan-gce 2021/02/10 18:19 upstream e0756cfc 2bd9619f .config log report info INFO: rcu detected stall in call_timer_fn
ci-upstream-kasan-gce 2021/02/05 03:15 upstream 5c279c4c 23a562df .config log report info INFO: rcu detected stall in call_timer_fn
ci-upstream-kasan-gce-root 2021/01/04 03:35 upstream e71ba945 79264ae3 .config log report info
ci-upstream-kasan-gce-root 2020/12/08 00:46 upstream cd796ed3 51a9082e .config log report info
ci-upstream-kasan-gce-root 2020/12/03 09:36 upstream 34816d20 e6b0d314 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/11/22 15:46 upstream a349e4c6 0d27f508 .config log report info
ci-upstream-kasan-gce 2020/10/07 14:55 upstream c85fb28b 1880b4a9 .config log report info
ci-upstream-kasan-gce-root 2020/09/23 04:33 upstream eff48dde 3e8f6c27 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/09/04 13:36 upstream e28f0104 abf9ba4f .config log report
ci-upstream-kasan-gce 2020/08/29 21:59 upstream 4d41ead6 d5a3ae1f .config log report
ci-upstream-kasan-gce-root 2020/08/27 18:29 upstream 15bc20c6 816e0689 .config log report
ci-upstream-kasan-gce 2020/08/25 15:05 upstream 6a9dc5fd 344da168 .config log report
ci-upstream-kasan-gce-smack-root 2020/08/23 19:04 upstream c3d8f220 cef5ae68 .config log report
ci-upstream-kasan-gce-root 2020/07/10 01:17 upstream 0bddd227 bc238812 .config log report
ci-upstream-kasan-gce-root 2020/07/09 13:27 upstream 0bddd227 bc238812 .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/07 08:45 upstream 7ae77150 e6b89e4e .config log report
ci-upstream-kasan-gce-smack-root 2020/05/15 08:12 upstream 8c1684bb 2d572622 .config log report
ci-upstream-kasan-gce-smack-root 2020/03/24 21:07 upstream 76ccd234 68660b21 .config log report
ci-upstream-kasan-gce-smack-root 2020/03/14 14:34 upstream fffb08b3 749688d2 .config log report
ci-upstream-kasan-gce-smack-root 2020/02/18 10:23 upstream 11a48a5a 1ce142dc .config log report
ci-upstream-kasan-gce-smack-root 2020/02/04 16:24 upstream 322bf2d3 93e5e335 .config log report
ci-upstream-kasan-gce-selinux-root 2020/02/03 08:30 upstream 46d6b7be 93e5e335 .config log report
ci-upstream-kasan-gce 2020/01/26 06:11 upstream 2821e26f f4e7270e .config log report
ci-upstream-kasan-gce-selinux-root 2020/01/13 01:36 upstream 040a3c33 53faa9fe .config log report
ci-qemu-upstream 2019/11/29 10:50 upstream 81b6b964 4f7e1d0f .config log report
ci-upstream-kasan-gce-root 2019/09/28 08:47 upstream 8f744bde d8074e0b .config log report
ci-upstream-kasan-gce-386 2020/01/30 22:10 upstream 39bed42d 5ed23f9a .config log report