--- x/net/core/sock_map.c
+++ y/net/core/sock_map.c
@@ -209,7 +209,7 @@ static struct sk_psock *sock_map_psock_g
 	rcu_read_lock();
 	psock = sk_psock(sk);
 	if (psock) {
-		if (sk->sk_prot->close != sock_map_close) {
+		if (sk->sk_prot->close == sock_map_close) {
 			psock = ERR_PTR(-EBUSY);
 			goto out;
 		}