/* Classify filter specified, but no classify filter configured */
if ((a->rx_enable + a->tx_enable + a->drop_enable) && a->filter &&
- cm->classify_table_index_by_sw_if_index[0] == ~0)
+ (!cm->classify_table_index_by_sw_if_index ||
+ cm->classify_table_index_by_sw_if_index[0] == ~0))
return VNET_API_ERROR_NO_SUCH_LABEL;
if (a->rx_enable + a->tx_enable + a->drop_enable)