diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 6f682f669..172ef97eb 100755
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2869,11 +2869,11 @@ int udp_lib_getsockopt(struct sock *sk, int level, int optname,
 	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 UDP_CORK:
 		val = READ_ONCE(up->corkflag);