diff --git a/net/ipv4/gre_demux.c b/net/ipv4/gre_demux.c
index 44bfeecac33e..9c5fac0fc0ee 100644
--- a/net/ipv4/gre_demux.c
+++ b/net/ipv4/gre_demux.c
@@ -60,8 +60,8 @@ EXPORT_SYMBOL_GPL(gre_del_protocol);
 int gre_parse_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,
 		     bool *csum_err, __be16 proto, int nhs)
 {
-	const struct gre_base_hdr *greh;
-	__be32 *options;
+	const struct gre_base_hdr *greh = NULL;
+	__be32 *options = NULL;
 	int hdr_len;
 
 	if (unlikely(!pskb_may_pull(skb, nhs + sizeof(struct gre_base_hdr))))