On Wed, Jan 07, 2015 at 11:58:00PM +0300, Sergei Shtylyov wrote:
> Hello.
>
> On 01/07/2015 11:55 AM, Michael S. Tsirkin wrote:
>
> >commit 8b38694a2dc8b18374310df50174f1e4376d6824
> > vhost/net: virtio 1.0 byte swap
> >had this chunk:
> >- heads[headcount - 1].len += datalen;
> >+
Hello.
On 01/07/2015 11:55 AM, Michael S. Tsirkin wrote:
commit 8b38694a2dc8b18374310df50174f1e4376d6824
vhost/net: virtio 1.0 byte swap
had this chunk:
- heads[headcount - 1].len += datalen;
+ heads[headcount - 1].len = cpu_to_vhost32(vq, len - datalen);
This adds datalen w
On Wed, 2015-01-07 at 10:55 +0200, Michael S. Tsirkin wrote:
> commit 8b38694a2dc8b18374310df50174f1e4376d6824
> vhost/net: virtio 1.0 byte swap
> had this chunk:
> - heads[headcount - 1].len += datalen;
> + heads[headcount - 1].len = cpu_to_vhost32(vq, len - datalen);
>
> This add
commit 8b38694a2dc8b18374310df50174f1e4376d6824
vhost/net: virtio 1.0 byte swap
had this chunk:
- heads[headcount - 1].len += datalen;
+ heads[headcount - 1].len = cpu_to_vhost32(vq, len - datalen);
This adds datalen with the wrong sign, causing guest panics.
Fixes: 8b38694a2dc8b1