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

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Message-ID: <00000000000046e89e05e4851ee1@google.com>
Date:   Sat, 23 Jul 2022 21:01:13 -0700
From:   syzbot <syzbot+c70d87ac1d001f29a058@...kaller.appspotmail.com>
To:     christophe.jaillet@...adoo.fr, code@...dh.me, dhowells@...hat.com,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KASAN: use-after-free Read in post_one_notification

Hello,

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

Reported-and-tested-by: syzbot+c70d87ac1d001f29a058@...kaller.appspotmail.com

Tested on:

commit:         fa4c07d9 kernel/watch_queue: Make pipe NULL while clea..
git tree:       https://github.com/siddhpant/linux.git post_one_notification
console output: https://syzkaller.appspot.com/x/log.txt?x=17f5cf52080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=95c061eee05f8e15
dashboard link: https://syzkaller.appspot.com/bug?extid=c70d87ac1d001f29a058
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.