--- zzzz-none-000/linux-5.4.213/net/core/sock_diag.c	2022-09-15 10:04:56.000000000 +0000
+++ miami-7690-761/linux-5.4.213/net/core/sock_diag.c	2024-05-29 11:20:02.000000000 +0000
@@ -19,19 +19,6 @@
 static int (*inet_rcv_compat)(struct sk_buff *skb, struct nlmsghdr *nlh);
 static DEFINE_MUTEX(sock_diag_table_mutex);
 static struct workqueue_struct *broadcast_wq;
-static atomic64_t cookie_gen;
-
-u64 sock_gen_cookie(struct sock *sk)
-{
-	while (1) {
-		u64 res = atomic64_read(&sk->sk_cookie);
-
-		if (res)
-			return res;
-		res = atomic64_inc_return(&cookie_gen);
-		atomic64_cmpxchg(&sk->sk_cookie, 0, res);
-	}
-}
 
 int sock_diag_check_cookie(struct sock *sk, const __u32 *cookie)
 {