syzbot has bisected this issue to:
commit f86cd20c9454847a524ddbdcdec32c0380ed7c9b
Author: Jens Axboe <axboe@xxxxxxxxx>
Date: Wed Jan 29 20:46:44 2020 +0000
io_uring: fix linked command file table usage
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16db4d3a900000
start commit: 9420f1ce Merge tag 'pinctrl-v5.9-1' of git://git.kernel.or..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=15db4d3a900000
console output: https://syzkaller.appspot.com/x/log.txt?x=11db4d3a900000
kernel config: https://syzkaller.appspot.com/x/.config?x=72cf85e4237850c8
dashboard link: https://syzkaller.appspot.com/bug?extid=6338dcebf269a590b668
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=141dde52900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15b196aa900000
Reported-by: syzbot+6338dcebf269a590b668@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: f86cd20c9454 ("io_uring: fix linked command file table usage")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
