diff --git a/viostor/virtio_ring.c b/viostor/virtio_ring.c
index d099bb8..2911cef 100644
--- a/viostor/virtio_ring.c
+++ b/viostor/virtio_ring.c
@@ -237,6 +237,8 @@ vring_get_buf(
         return NULL;
     }
 
+    rmb();
+
     i = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].id;
     *len = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].len;