Re: [syzbot] [fs?] general protection fault in __umount_mnt

[syzbot]

Hello,

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

Reported-by: syzbot+e4470cc28308f2081ec8@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+e4470cc28308f2081ec8@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         a0c83177 Merge tag 'drm-fixes-2026-03-21' of https://g..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14884d72580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a1eff8566a28238e
dashboard link: https://syzkaller.appspot.com/bug?extid=e4470cc28308f2081ec8
compiler:       Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
patch:          https://syzkaller.appspot.com/x/patch.diff?x=16c201d6580000

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