diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index d3dd1c1a9..c690c36f5 100755
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3718,11 +3718,11 @@ static int do_tcp_getsockopt(struct sock *sk, int level,
 	if (get_user(len, optlen))
 		return -EFAULT;
 
-	len = min_t(unsigned int, len, sizeof(int));
-
 	if (len < 0)
 		return -EINVAL;
 
+	len = min_t(unsigned int, len, sizeof(int));
+
 	switch (optname) {
 	case TCP_MAXSEG:
 		val = tp->mss_cache;