vhost: fix length for cross region descriptor
authorMichael S. Tsirkin <mst@redhat.com>
Mon, 26 Nov 2012 05:57:27 +0000 (05:57 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 3 Mar 2013 22:06:43 +0000 (06:06 +0800)
commit94dcb26bbbed1851e0a7fb16165207c2c61e545f
tree3bbf5cc7eb75e9cdb8f3c5763546767f5a4a9d28
parent7e5e167c5c1b44f408fa8f8a8f062f234cd0f0d6
vhost: fix length for cross region descriptor

commit bd97120fc3d1a11f3124c7c9ba1d91f51829eb85 upstream.

If a single descriptor crosses a region, the
second chunk length should be decremented
by size translated so far, instead it includes
the full descriptor length.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/vhost/vhost.c