diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a67310e00b3f..602c6d0492e2 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -899,14 +899,16 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
 		goto nla_put_failure;
 
 	if (1) {
-		struct rtnl_link_ifmap map = {
-			.mem_start   = dev->mem_start,
-			.mem_end     = dev->mem_end,
-			.base_addr   = dev->base_addr,
-			.irq         = dev->irq,
-			.dma         = dev->dma,
-			.port        = dev->if_port,
-		};
+		struct rtnl_link_ifmap map;
+
+		memset(&map, 0, sizeof(map));
+		map.mem_start   = dev->mem_start;
+		map.mem_end     = dev->mem_end;
+		map.base_addr   = dev->base_addr;
+		map.irq         = dev->irq;
+		map.dma         = dev->dma;
+		map.port        = dev->if_port;
+
 		if (nla_put(skb, IFLA_MAP, sizeof(map), &map))
 			goto nla_put_failure;
 	}