Am 26.03.2015 um 16:36 schrieb Cornelia Huck:
> Processing for READ_VQ_CONF needs to check whether the requested queue
> value is actually in the supported range and post a channel program
> check if not.
>
> Cc: qemu-sta...@nongnu.org
> Reviewed-by: David Hildenbrand <d...@linux.vnet.ibm.com>
> Signed-off-by: Cornelia Huck <cornelia.h...@de.ibm.com>
Acked-by: Christian Borntraeger <borntrae...@de.ibm.com>
> ---
> hw/s390x/virtio-ccw.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
> index ceb6a45..d32ecaf 100644
> --- a/hw/s390x/virtio-ccw.c
> +++ b/hw/s390x/virtio-ccw.c
> @@ -549,6 +549,10 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
> ret = -EFAULT;
> } else {
> vq_config.index = lduw_be_phys(&address_space_memory, ccw.cda);
> + if (vq_config.index >= VIRTIO_PCI_QUEUE_MAX) {
> + ret = -EINVAL;
> + break;
> + }
> vq_config.num_max = virtio_queue_get_num(vdev,
> vq_config.index);
> stw_be_phys(&address_space_memory,
>
