diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index f58d69216b61..ce5b55491942 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -773,6 +773,8 @@ vti6_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	struct net *net = dev_net(dev);
 	struct vti6_net *ip6n = net_generic(net, vti6_net_id);
 
+	memset(&p1, 0, sizeof(p1));
+
 	switch (cmd) {
 	case SIOCGETTUNNEL:
 		if (dev == ip6n->fb_tnl_dev) {