[NETNS]: Add netns refcnt debug for dst ops.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 6293cb91ed1d49aca560c255c04ea545a1247026..210a079cfc6f44261cc621b1ce827f6bed2af935 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2622,7 +2622,7 @@ static int ip6_route_net_init(struct net *net)
                                        GFP_KERNEL);
        if (!net->ipv6.ip6_dst_ops)
                goto out;
-       net->ipv6.ip6_dst_ops->dst_net = net;
+       net->ipv6.ip6_dst_ops->dst_net = hold_net(net);
 
        net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template,
                                           sizeof(*net->ipv6.ip6_null_entry),
@@ -2669,6 +2669,7 @@ out:
        return ret;
 
 out_ip6_dst_ops:
+       release_net(net->ipv6.ip6_dst_ops->dst_net);
        kfree(net->ipv6.ip6_dst_ops);
        goto out;
 }
@@ -2684,6 +2685,7 @@ static void ip6_route_net_exit(struct net *net)
        kfree(net->ipv6.ip6_prohibit_entry);
        kfree(net->ipv6.ip6_blk_hole_entry);
 #endif
+       release_net(net->ipv6.ip6_dst_ops->dst_net);
        kfree(net->ipv6.ip6_dst_ops);
 }