syzbot


WARNING: bad unlock balance in ovl_llseek
Status: fixed on 2020/04/15 17:19
Reported-by: syzbot+66a9752fa927f745385e@syzkaller.appspotmail.com
Fix commit: 531d3040bc5c ovl: fix lock in ovl_llseek()
First crash: 645d, last: 630d

Cause bisection: introduced by (bisect log) :
commit b1f9d3858f724ed45b279b689fb5b400d91352e3
Author: Amir Goldstein <amir73il@gmail.com>
Date: Sat Dec 21 09:42:29 2019 +0000

  ovl: use ovl_inode_lock in ovl_llseek()

Crash: WARNING: bad unlock balance in ovl_llseek (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2020/03/03 07:34 19m amir73il@gmail.com https://github.com/amir73il/linux.git ovl-fixes OK

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/03/03 08:07 upstream 63623fd44972 c88c7b75 .config log report syz C
ci-upstream-kasan-gce-root 2020/03/02 02:31 upstream 63623fd44972 c88c7b75 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/02/28 12:12 upstream f8788d86ab28 59b57593 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/03/15 02:36 linux-next 770fbb32d34e 749688d2 .config log report syz C