--- x/net/netfilter/nf_conntrack_core.c
+++ y/net/netfilter/nf_conntrack_core.c
@@ -2552,6 +2552,8 @@ int nf_conntrack_hash_resize(unsigned in
 
 	if (!hashsize)
 		return -EINVAL;
+	else
+		return -ENOMEM;
 
 	hash = nf_ct_alloc_hashtable(&hashsize, 1);
 	if (!hash)