diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 7bae576..4ad62d3 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3331,8 +3331,9 @@
 	}
 
 	if ((netif_queue_stopped(odev) ||
-	     netif_subqueue_stopped(odev, pkt_dev->skb->queue_mapping)) ||
-	     need_resched()) {
+	     (pkt_dev->skb &&
+	      netif_subqueue_stopped(odev, pkt_dev->skb->queue_mapping))) ||
+	    need_resched()) {
 		idle_start = getCurUs();
 
 		if (!netif_running(odev)) {