Thinking again about this, doing this zero initialization at the very
end of __release_sock() solves the problem of potential infinite loop
in
__release_sock(). Since producer will hit the backlog limit.

Thanks

diff --git a/net/core/sock.c b/net/core/sock.c
index 305cba4..544cf4a 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c

@@ -1542,6 +1542,11 @@ static void __release_sock(struct sock *sk)
 
                bh_lock_sock(sk);
        } while ((skb = sk->sk_backlog.head) != NULL);
+       /*
+        * Doing this zeroing at the end of this function guarantee we

can not
+        * loop forever while a wild producer attempts to flood us
+        */
+       sk->sk_backlog.len = 0;
 }