syzbot has bisected this bug to:
commit a10b5c564741cd3b6708f085a1fa892b63c2063d
Author: Byungchul Park <byungchul.park@xxxxxxx>
Date: Mon Aug 14 07:00:51 2017 +0000
locking/lockdep: Add a comment about crossrelease_hist_end() in
lockdep_sys_exit()
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1026190ce00000
start commit: 3a5af36b Merge tag '4.19-rc3-smb3-cifs' of git://git.samba..
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=1226190ce00000
console output: https://syzkaller.appspot.com/x/log.txt?x=1426190ce00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9c4a80625153107e
dashboard link: https://syzkaller.appspot.com/bug?extid=68dce7caebd8543121de
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1068a44e400000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=146386c6400000
Reported-by: syzbot+68dce7caebd8543121de@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: a10b5c564741 ("locking/lockdep: Add a comment about
crossrelease_hist_end() in lockdep_sys_exit()")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
