soreuseport: fast reuseport UDP socket selection

[cascardo/linux.git] / net / ipv6 / datagram.c

diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index d70b023..517c55b 100644 (file)
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -167,8 +167,10 @@ ipv4_connected:
 
        security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
 
-       opt = flowlabel ? flowlabel->opt : np->opt;
+       rcu_read_lock();
+       opt = flowlabel ? flowlabel->opt : rcu_dereference(np->opt);
        final_p = fl6_update_dst(&fl6, opt, &final);
+       rcu_read_unlock();
 
        dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
        err = 0;