@@ -1242,6 +1242,9 @@ void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n,
int r, index = n - hdev->vq_index;
struct vhost_vring_file file;
+ /* should only be called after backend is connected */
+ assert(hdev->vhost_ops);
+
if (mask) {
assert(vdev->use_guest_notifier_mask);
file.fd = event_notifier_get_fd(&hdev->vqs[index].masked_notifier);
@@ -1288,6 +1291,9 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev)
{
int i, r;
+ /* should only be called after backend is connected */
+ assert(hdev->vhost_ops);
+
hdev->started = true;
r = vhost_dev_set_features(hdev, hdev->log_enabled);
@@ -1350,6 +1356,9 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev)
{
int i;
+ /* should only be called after backend is connected */
+ assert(hdev->vhost_ops);
+
for (i = 0; i < hdev->nvqs; ++i) {
vhost_virtqueue_stop(hdev,
vdev,