vhost: show vhost-user <interface> may crash [VPP-1242]

[vpp.git] / src / vnet / devices / virtio / vhost-user.c

diff --git a/src/vnet/devices/virtio/vhost-user.c b/src/vnet/devices/virtio/vhost-user.c
index 5460f10..c1fca44 100644 (file)
--- a/src/vnet/devices/virtio/vhost-user.c
+++ b/src/vnet/devices/virtio/vhost-user.c
@@ -3253,6 +3253,13 @@ show_vhost_user_command_fn (vlib_main_t * vm,
       if (unformat
          (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
        {
+         hi = vnet_get_hw_interface (vnm, hw_if_index);
+         if (vhost_user_dev_class.index != hi->dev_class_index)
+           {
+             error = clib_error_return (0, "unknown input `%U'",
+                                        format_unformat_error, input);
+             goto done;
+           }
          vec_add1 (hw_if_indices, hw_if_index);
        }
       else if (unformat (input, "descriptors") || unformat (input, "desc"))