rcu_assign_sk_user_data
rcu_assign_sk_user_data((*gs4)->sock->sk, NULL);
rcu_assign_sk_user_data((*gs6)->sock->sk, NULL);
rcu_assign_sk_user_data(gs4->sock->sk, gs4);
rcu_assign_sk_user_data(gs6->sock->sk, gs6);
rcu_assign_sk_user_data(sk, NULL);
rcu_assign_sk_user_data(sk, NULL);
rcu_assign_sk_user_data(ovpn_sock->sk, ovpn_sock);
rcu_assign_sk_user_data(ovpn_sock->sk, NULL);
rcu_assign_sk_user_data(sk, NULL);
rcu_assign_sk_user_data(sk, NULL);
rcu_assign_sk_user_data(sock->sk, NULL);
rcu_assign_sk_user_data(sk, cfg->sk_user_data);
rcu_assign_sk_user_data(ps->__sk, NULL);
rcu_assign_sk_user_data(sk, session);
rcu_assign_sk_user_data(child, NULL);
rcu_assign_sk_user_data(clcsk, NULL);
rcu_assign_sk_user_data(smc->clcsock->sk, NULL);
rcu_assign_sk_user_data(smc->clcsock->sk, NULL);