syzbot suspects this issue was fixed by commit:
commit 3b5260d12b1fe76b566fe182de8abc586b827ed0
Author: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Fri May 23 23:20:36 2025 +0000
Don't propagate mounts into detached trees
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=160a018c580000
start commit: bec6f00f120e Merge tag 'usb-6.15-rc6' of git://git.kernel...
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=b9683d529ec1b880
dashboard link: https://syzkaller.appspot.com/bug?extid=799d4cf78a7476483ba2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17eb1670580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17794cf4580000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: Don't propagate mounts into detached trees
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
