xen-netfront: uninitialized fields in xenvif_rx_action

While npo.copy and npo.meta are initialized in xenvif_rx_action, fields such as npo.meta_prod are directly used later in xenvif_gop_skb without being initialized first. Although the output of xenvif_rx_action is based on the difference between new npo->meta_prod and old npo->meta_prod, it is better to initialize them to 0 at the beginning.

drivers/net/xen-netback/netback.c +4 -0

@@ -560,6 +560,10 @@ static void xenvif_rx_action(struct xenvif_queue *queue)
 	bool need_to_notify = false;
 
 	struct netrx_pending_operations npo = {
+		.copy_prod = 0,
+		.copy_cons = 0,
+		.meta_prod = 0,
+		.meta_cons = 0,
 		.copy  = queue->grant_copy_op,
 		.meta  = queue->meta,
 	};

While npo.copy and npo.meta are initialized in xenvif_rx_action, fields such as npo.meta_prod are directly used later in xenvif_gop_skb without being initialized first. Although the output of xenvif_rx_action is based on the difference between new npo->meta_prod and old npo->meta_prod, it is better to initialize them to 0 at the beginning.

drivers/net/xen-netback/netback.c +4 -0

@@ -560,6 +560,10 @@ static void xenvif_rx_action(struct xenvif_queue *queue)
 	bool need_to_notify = false;
 
 	struct netrx_pending_operations npo = {
+		.copy_prod = 0,
+		.copy_cons = 0,
+		.meta_prod = 0,
+		.meta_cons = 0,
 		.copy  = queue->grant_copy_op,
 		.meta  = queue->meta,
 	};