syzbot


INFO: rcu detected stall in sys_mount (6)
Status: upstream: reported C repro on 2021/09/27 18:50
Reported-by: syzbot+ee7d095f44a683a195f8@syzkaller.appspotmail.com
First crash: 20d, last: 7d16h

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: no output from test machine (log)
Repro: C syz .config
similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sys_mount (4) 2 590d 605d 0/22 auto-closed as invalid on 2020/06/02 15:48
upstream INFO: rcu detected stall in sys_mount (5) C done done 10 380d 401d 17/22 fixed on 2020/11/16 12:12
upstream INFO: rcu detected stall in sys_mount (3) 6 681d 682d 0/22 closed as invalid on 2019/12/04 14:04
upstream INFO: rcu detected stall in sys_mount 1 1087d 1087d 0/22 closed as invalid on 2018/10/29 13:47
upstream INFO: rcu detected stall in sys_mount (2) 1 1038d 1038d 0/22 closed as dup on 2018/12/12 21:01

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/09/26 14:20 linux-next 5a5d008887b4 8cac236e .config log report syz C INFO: rcu detected stall in sys_mount
ci-upstream-linux-next-kasan-gce-root 2021/10/08 04:12 linux-next f8dc23b3dc0c efe0f24d .config log report info INFO: rcu detected stall in sys_mount
ci-upstream-linux-next-kasan-gce-root 2021/10/03 09:56 linux-next a25006a77348 db0f5787 .config log report info INFO: rcu detected stall in sys_mount
ci-upstream-linux-next-kasan-gce-root 2021/09/26 10:32 linux-next 5a5d008887b4 8cac236e .config log report info INFO: rcu detected stall in sys_mount
ci-upstream-linux-next-kasan-gce-root 2021/09/25 23:47 linux-next 5a5d008887b4 8cac236e .config log report info INFO: rcu detected stall in sys_mount
ci-upstream-linux-next-kasan-gce-root 2021/09/25 19:46 linux-next 5a5d008887b4 8cac236e .config log report info INFO: rcu detected stall in sys_mount
ci-upstream-linux-next-kasan-gce-root 2021/09/25 05:17 linux-next 5a5d008887b4 8cac236e .config log report info INFO: rcu detected stall in sys_mount