linux-kernel - Re: [syzbot] kernel BUG in vhost_get_vq

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Message-ID: <CAGxU2F4f0Gx=-4g-r3QHFPsn0WwSW3HyT+MRKj4=TTWp9R+WYw@mail.gmail.com>
Date:   Mon, 21 Feb 2022 15:09:42 +0100
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     syzbot <syzbot+3140b17cb44a7b174008@...kaller.appspotmail.com>
Cc:     Hillf Danton <hdanton@...a.com>, Jason Wang <jasowang@...hat.com>,
        kernel list <linux-kernel@...r.kernel.org>,
        Michael Tsirkin <mst@...hat.com>,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] kernel BUG in vhost_get_vq_desc

#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
f71077a4d84b

Patch sent upstream:
https://lore.kernel.org/virtualization/20220221114916.107045-1-sgarzare@redhat.com/T/#u

On Sun, Feb 20, 2022 at 3:11 AM syzbot
<syzbot+3140b17cb44a7b174008@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
>
> Reported-and-tested-by: syzbot+3140b17cb44a7b174008@...kaller.appspotmail.com
>
> Tested on:
>
> commit:         f71077a4 Merge tag 'mmc-v5.17-rc1-2' of git://git.kern..
> git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a78b064590b9f912
> dashboard link: https://syzkaller.appspot.com/bug?extid=3140b17cb44a7b174008
> 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=143dc0d4700000
>
> Note: testing is done by a robot and is best-effort only.
>

View attachment "0001-vhost-vsock-don-t-check-owner-in-vhost_vsock_stop-wh.patch" of type "text/x-patch" (2362 bytes)