syzbot has bisected this issue to:
commit 0f38d76646157357fcfa02f50575ea044830c494
Author: Christoph Hellwig <hch@xxxxxx>
Date: Tue Oct 12 10:40:45 2021 +0000
blk-mq: cleanup blk_mq_submit_bio
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12506f7ef00000
start commit: c5eb0a61238d Linux 5.18-rc6
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=11506f7ef00000
console output: https://syzkaller.appspot.com/x/log.txt?x=16506f7ef00000
kernel config: https://syzkaller.appspot.com/x/.config?x=78013caa620443d6
dashboard link: https://syzkaller.appspot.com/bug?extid=99938118dfd9e1b0741a
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1484cbc1f00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10c7026cf00000
Reported-by: syzbot+99938118dfd9e1b0741a@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 0f38d7664615 ("blk-mq: cleanup blk_mq_submit_bio")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
