--- a/net/socket.c
+++ b/net/socket.c
@@ -3341,6 +3341,7 @@ EXPORT_SYMBOL(kernel_sendpage_locked);
 
 int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how)
 {
+	if (!sock || !sock->ops || !sock->ops->shutdown) return 0;
 	return sock->ops->shutdown(sock, how);
 }
 EXPORT_SYMBOL(kernel_sock_shutdown);