linux-kernel - Re: [ 84/95] virtio_blk: fix config handler race

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]

Date:	Mon, 10 Sep 2012 16:25:58 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, "Michael S. Tsirkin" <mst@...hat.com>,
	Asias He <asias@...hat.com>
Subject: Re: [ 84/95] virtio_blk: fix config handler race

On Mon, 2012-09-10 at 11:56 +0930, Rusty Russell wrote:
> Ben Hutchings <ben@...adent.org.uk> writes:
> 
> > 3.2-stable review patch.  If anyone has any objections, please let me know.
> >
> > ------------------
> >
> > From: "Michael S. Tsirkin" <mst@...hat.com>
> >
> > commit 4678d6f970c2f7c0cbfefc0cc666432d153b321b upstream.
> >
> > Fix a theoretical race related to config work
> 
> ???
> 
> From Documentation/stable_kernel_rules.txt:
> 
>  - No "theoretical race condition" issues, unless an explanation of how the
>    race can be exploited is also provided.
> 
> Similarly, '[ 85/95] virtio_blk: Drop unused request tracking list'
> is a marginal perf improvement, why is it in there?
> 
> Neither of these were cc:stable; did someone request them specifically?

They weren't requested; I think I included them as apparent dependencies
of one or more of the others:

b79d866 virtio-blk: Fix hot-unplug race in remove method
02e2b12 virtio-blk: Call del_gendisk() before disable guest kick
483001c virtio-blk: Reset device after blk_cleanup_queue()

The last of those was cc'd to stable and the first two were applied in
3.5.2, thus I assume requested by someone.

Ben.

-- 
Ben Hutchings
Make three consecutive correct guesses and you will be considered an expert.

Download attachment "signature.asc" of type "application/pgp-signature" (829 bytes)