Re: [syzbot] possible deadlock in mnt_want_write (2)

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+b42fe626038981fb7bfa@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         08986606 Merge tag 'libnvdimm-fixes-5.19-rc5' of git:/..
git tree:       http://kernel.source.codeaurora.cn/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=1479f7fff00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=75c9ff14e1db87c0
dashboard link: https://syzkaller.appspot.com/bug?extid=b42fe626038981fb7bfa
compiler:       Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=11e05fd4080000

Note: testing is done by a robot and is best-effort only.