Re: [syzbot] [block?] WARNING in blk_mq_start_request

[syzbot]

syzbot has bisected this issue to:

commit d78bfa1346ab1fe04d20aa45a0678d1fc866f37c
Author: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx>
Date:   Wed Sep 13 15:16:16 2023 +0000

    block/null_blk: add queue_rqs() support

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=106414a8e80000
start commit:   13d88ac54ddd Merge tag 'vfs-6.7.fsid' of git://git.kernel...
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=126414a8e80000
console output: https://syzkaller.appspot.com/x/log.txt?x=146414a8e80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=beb32a598fd79db9
dashboard link: https://syzkaller.appspot.com/bug?extid=fcc47ba2476570cbbeb0
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1465bb08e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13e7881f680000

Reported-by: syzbot+fcc47ba2476570cbbeb0@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: d78bfa1346ab ("block/null_blk: add queue_rqs() support")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection