linux-kernel - Re: [syzbot] [hardening?] [mm?] BUG: bad usercopy in vfs

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Message-ID: <67a381a3.050a0220.50516.0077.GAE@google.com>
Date: Wed, 05 Feb 2025 07:20:03 -0800
From: syzbot <syzbot+48a99e426f29859818c0@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, brauner@...nel.org, gustavoars@...nel.org, 
	kees@...nel.org, linux-hardening@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, mjguzik@...il.com, 
	syzkaller-bugs@...glegroups.com, tytso@....edu
Subject: Re: [syzbot] [hardening?] [mm?] BUG: bad usercopy in vfs_readlink

Hello,

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

Reported-by: syzbot+48a99e426f29859818c0@...kaller.appspotmail.com
Tested-by: syzbot+48a99e426f29859818c0@...kaller.appspotmail.com

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.