syzbot suspects this issue was fixed by commit:

commit 794ebcea865bff47231de89269e9d542121ab7be
Author: Stephen Brennan [off-list ref]
Date:   Wed Sep 1 17:51:42 2021 +0000

    namei: Standardize callers of filename_lookup()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1163691d300000
start commit:   acd3d2859453 Merge tag 'fixes-v5.13' of git://git.kernel.o..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=f04bb30bd3c55050
dashboard link: https://syzkaller.appspot.com/bug?extid=db0c9917f71539bc4ad1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13f63543d00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=122c8ef1d00000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: namei: Standardize callers of filename_lookup()

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