Ensure we clear the queue memory we get from alloc_pages(). Otherwise QEMU gets angry when we attempt to migrate a unit test as the used vring index is corrupted by the page allocator's next page link. Signed-off-by: Andrew Jones <drjones@xxxxxxxxxx> --- lib/virtio-mmio.c | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/virtio-mmio.c b/lib/virtio-mmio.c index e5e8f660b5cd..57fe78ecbb6c 100644 --- a/lib/virtio-mmio.c +++ b/lib/virtio-mmio.c @@ -56,6 +56,7 @@ static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, vq = calloc(1, sizeof(*vq)); assert(VIRTIO_MMIO_QUEUE_SIZE_MIN <= 2*PAGE_SIZE); queue = alloc_pages(1); + memset(queue, 0, 2*PAGE_SIZE); assert(vq && queue); writel(index, vm_dev->base + VIRTIO_MMIO_QUEUE_SEL); -- 2.13.6
