linux-kernel - Re: [PATCH v2 1/2] virtio-net: Verify page list size before fitting into skb

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20111003184257.GB22427@redhat.com>
Date:	Mon, 3 Oct 2011 20:42:57 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	David Miller <davem@...emloft.net>
Cc:	levinsasha928@...il.com, linux-kernel@...r.kernel.org,
	rusty@...tcorp.com.au, virtualization@...ts.linux-foundation.org,
	netdev@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v2 1/2] virtio-net: Verify page list size before fitting
 into skb

On Mon, Oct 03, 2011 at 02:19:51PM -0400, David Miller wrote:
> From: Sasha Levin <levinsasha928@...il.com>
> Date: Wed, 28 Sep 2011 17:40:54 +0300
> 
> > This patch verifies that the length of a buffer stored in a linked list
> > of pages is small enough to fit into a skb.
> > 
> > If the size is larger than a max size of a skb, it means that we shouldn't
> > go ahead building skbs anyway since we won't be able to send the buffer as
> > the user requested.
> > 
> > Cc: Rusty Russell <rusty@...tcorp.com.au>
> > Cc: "Michael S. Tsirkin" <mst@...hat.com>
> > Cc: virtualization@...ts.linux-foundation.org
> > Cc: netdev@...r.kernel.org
> > Cc: kvm@...r.kernel.org
> > Signed-off-by: Sasha Levin <levinsasha928@...il.com>
> 
> Michael, tell me what's happening with these two virtio-net bug fixes.
> 
> Thanks.

Thanks for the reminder.
They are more enhancements than bugfixes, in that both help debug buggy
hypervisors. So net-next material.
Patch 1 is ok patch 2 would benefit from a slightly clearer comment.

-- 
MST
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/