linux-kernel - Re: [syzbot] KASAN: use-after-free Read in kernfs_next_descendant

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Message-ID: <000000000000000a1405eb9a0bee@google.com>
Date:   Fri, 21 Oct 2022 23:55:25 -0700
From:   syzbot <syzbot+6bc35f3913193fe7f0d3@...kaller.appspotmail.com>
To:     hdanton@...a.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, tj@...nel.org
Subject: Re: [syzbot] KASAN: use-after-free Read in kernfs_next_descendant_post
 (2)

Hello,

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

Reported-and-tested-by: syzbot+6bc35f3913193fe7f0d3@...kaller.appspotmail.com

Tested on:

commit:         aae703b0 Merge tag 'for-6.1-rc1-tag' of git://git.kern..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=17242776880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ea03ca45176080bc
dashboard link: https://syzkaller.appspot.com/bug?extid=6bc35f3913193fe7f0d3
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1223c16a880000

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