ipv6: fix route error binding peer in func icmp6_dst_alloc

in func icmp6_dst_alloc,dst_metric_set call ipv6_cow_metrics to set metric.
ipv6_cow_metrics may will call rt6_bind_peer to set rt6_info->rt6i_peer.
So,we should move ipv6_addr_copy before dst_metric_set to make sure rt6_bind_peer success.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 2 deletions

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index fb545edef6e..57b82dc1ae9 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1086,11 +1086,10 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
         rt->dst.output  = ip6_output;
         dst_set_neighbour(&rt->dst, neigh);
         atomic_set(&rt->dst.__refcnt, 1);
-        dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
-
         ipv6_addr_copy(&rt->rt6i_dst.addr, addr);
         rt->rt6i_dst.plen = 128;
         rt->rt6i_idev     = idev;
+        dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
 
         spin_lock_bh(&icmp6_dst_lock);
         rt->dst.next = icmp6_dst_gc_list;