Re: [Qemu-devel] [PATCH v5 4/9] virtio: handle virtqueue_map_desc() errors

[Cornelia Huck]

On Wed, 21 Sep 2016 16:52:21 +0100
Stefan Hajnoczi <address@hidden> wrote:

> Errors can occur during virtqueue_pop(), especially in
> virtqueue_map_desc().  In order to handle this we must unmap iov[]
> before returning NULL.  The caller will consider the virtqueue empty and
> the virtio_error() call will have marked the device broken.
> 
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
>  hw/virtio/virtio.c | 74 
> ++++++++++++++++++++++++++++++++++++++++--------------
>  1 file changed, 55 insertions(+), 19 deletions(-)

Reviewed-by: Cornelia Huck <address@hidden>