Re: [syzbot] [hardening?] [mm?] BUG: bad usercopy in vfs_readlink

[syzbot]

Hello,

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

Reported-by: syzbot+48a99e426f29859818c0@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+48a99e426f29859818c0@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         5c8c2292 Merge tag 'kthreads-fixes-2025-02-04' of git:..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=108993df980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=207eb10d2de1b054
dashboard link: https://syzkaller.appspot.com/bug?extid=48a99e426f29859818c0
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=112ecdf8580000

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