Re: [syzbot] [fs?] possible deadlock in put_mnt_ns

[syzbot]

Hello,

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

Reported-by: syzbot+55fd613012e606d75d45@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+55fd613012e606d75d45@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         e64f65a7 FOLDME
git tree:       https://github.com/brauner/linux.git vfs-7.0.namespace
console output: https://syzkaller.appspot.com/x/log.txt?x=15fac39a580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=dac5329a4190a189
dashboard link: https://syzkaller.appspot.com/bug?extid=55fd613012e606d75d45
compiler:       Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.