linux-kernel - Re: [PATCH 0/6] virtio-console: spec compliance fixes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180424214104-mutt-send-email-mst@kernel.org>
Date:   Tue, 24 Apr 2018 21:41:29 +0300
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Amit Shah <amit@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        virtualization@...ts.linux-foundation.org, stable@...r.kernel.org,
        Tiwei Bie <tiwei.bie@...el.com>,
        Jason Wang <jasowang@...hat.com>
Subject: Re: [PATCH 0/6] virtio-console: spec compliance fixes

On Fri, Apr 20, 2018 at 09:17:59PM +0300, Michael S. Tsirkin wrote:
> Turns out virtio console tries to take a buffer out of an active vq.
> Works by sheer luck, and is explicitly forbidden by spec.  And while
> going over it I saw that error handling is also broken -
> failure is easy to trigger if I force allocations to fail.
> 
> Lightly tested.

Amit - any feedback before I push these patches?

> Michael S. Tsirkin (6):
>   virtio_console: don't tie bufs to a vq
>   virtio: add ability to iterate over vqs
>   virtio_console: free buffers after reset
>   virtio_console: drop custom control queue cleanup
>   virtio_console: move removal code
>   virtio_console: reset on out of memory
> 
>  drivers/char/virtio_console.c | 155 ++++++++++++++++++++----------------------
>  include/linux/virtio.h        |   3 +
>  2 files changed, 75 insertions(+), 83 deletions(-)
> 
> -- 
> MST
>