syzbot has bisected this bug to:
commit 387e3746d01c34457d6a73688acd90428725070b
Author: Amir Goldstein <amir73il@xxxxxxxxx>
Date: Fri Jun 7 14:24:38 2019 +0000
locks: eliminate false positive conflicts for write lease
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15a79594600000
start commit: c6dd78fc Merge branch 'x86-urgent-for-linus' of git://git...
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=17a79594600000
console output: https://syzkaller.appspot.com/x/log.txt?x=13a79594600000
kernel config: https://syzkaller.appspot.com/x/.config?x=3c8985c08e1f9727
dashboard link: https://syzkaller.appspot.com/bug?extid=032bc63605089a199d30
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15855334600000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17fcc4c8600000
Reported-by: syzbot+032bc63605089a199d30@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 387e3746d01c ("locks: eliminate false positive conflicts for write
lease")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
