Index: head/sys/net/iflib.c
===================================================================
--- head/sys/net/iflib.c
+++ head/sys/net/iflib.c
@@ -1781,7 +1781,7 @@
 		bus_dmamap_unload(txq->ift_tso_buf_tag,
 		    txq->ift_sds.ifsd_tso_map[i]);
 	}
-	m_free(*mp);
+	m_freem(*mp);
 	DBG_COUNTER_INC(tx_frees);
 	*mp = NULL;
 }
@@ -3660,7 +3660,7 @@
 		DBG_COUNTER_INC(txq_drain_flushing);
 		for (i = 0; i < avail; i++) {
 			if (__predict_true(r->items[(cidx + i) & (r->size-1)] != (void *)txq))
-				m_free(r->items[(cidx + i) & (r->size-1)]);
+				m_freem(r->items[(cidx + i) & (r->size-1)]);
 			r->items[(cidx + i) & (r->size-1)] = NULL;
 		}
 		return (avail);