syzbot


INFO: rcu detected stall in gc_worker (2)
Status: upstream: reported C repro on 2021/12/09 08:56
Reported-by: syzbot+70c4a3a8fe7f7e1af947@syzkaller.appspotmail.com
First crash: 69d, last: 11d

Cause bisection: introduced by (bisect log) [merge commit]:
commit 6d76f6eb46cbf8334b37352f2c2908329d028286
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu Nov 11 22:22:05 2021 +0000

  Merge tag 'm68knommu-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu

Crash: INFO: rcu detected stall in ext4_file_write_iter (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in gc_worker 8 1016d 1101d 0/22 auto-closed as invalid on 2019/10/14 16:34

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/12/08 20:50 upstream 2a987e65025e a4a2a501 .config log report syz C INFO: rcu detected stall in gc_worker
ci-upstream-kasan-gce-root 2021/12/27 10:05 upstream fc74e0a40e4f e4f103c4 .config log report info INFO: rcu detected stall in gc_worker
ci-upstream-net-this-kasan-gce 2022/01/16 00:45 net 9a9acdccdfa4 723cfaf0 .config log report info INFO: rcu detected stall in gc_worker
ci-upstream-net-kasan-gce 2021/11/19 18:17 net-next 812ad3d270cb 3a9d0024 .config log report info INFO: rcu detected stall in gc_worker