ipv6: tcp: add rcu locking in tcp_v6_send_synack()

[pandora-kernel.git] / net / ipv6 / tcp_ipv6.c

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 0170679..b20f7a0 100644 (file)
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -513,8 +513,10 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
                __tcp_v6_send_check(skb, &treq->loc_addr, &treq->rmt_addr);
 
                ipv6_addr_copy(&fl6.daddr, &treq->rmt_addr);
+               rcu_read_lock();
                err = ip6_xmit(sk, skb, &fl6, rcu_dereference(np->opt),
                               np->tclass);
+               rcu_read_unlock();
                err = net_xmit_eval(err);
        }