diff options
| -rw-r--r-- | src/vnet/devices/virtio/vhost_user_output.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/vnet/devices/virtio/vhost_user_output.c b/src/vnet/devices/virtio/vhost_user_output.c index 820594999c8..9b6c01704bf 100644 --- a/src/vnet/devices/virtio/vhost_user_output.c +++ b/src/vnet/devices/virtio/vhost_user_output.c @@ -261,6 +261,12 @@ VNET_DEVICE_CLASS_TX_FN (vhost_user_device_class) (vlib_main_t * vm, VHOST_VRING_IDX_RX (*vec_elt_at_index (vui->per_cpu_tx_qid, thread_index)); rxvq = &vui->vrings[qid]; + if (PREDICT_FALSE (rxvq->avail == 0)) + { + error = VHOST_USER_TX_FUNC_ERROR_MMAP_FAIL; + goto done3; + } + if (PREDICT_FALSE (vui->use_tx_spinlock)) vhost_user_vring_lock (vui, qid); |