gre: Fix use after free in netns compatibility layer.

[sliver-openvswitch.git] / datapath / linux-2.6 / compat-2.6 / net_namespace-ip_gre.c

diff --git a/datapath/linux-2.6/compat-2.6/net_namespace-ip_gre.c b/datapath/linux-2.6/compat-2.6/net_namespace-ip_gre.c
index a7a211c..21a6717 100644 (file)
--- a/datapath/linux-2.6/compat-2.6/net_namespace-ip_gre.c
+++ b/datapath/linux-2.6/compat-2.6/net_namespace-ip_gre.c
@@ -43,13 +43,13 @@ static int device_init_net(struct net *net)
 
 static void device_exit_net(struct net *net)
 {
+       if (dev_ops->exit)
+               dev_ops->exit(net);
+
        if (dev_ops->id && dev_ops->size) {
                int id = *dev_ops->id;
                kfree(rpl_net_generic(net, id));
        }
-
-       if (dev_ops->exit)
-               return dev_ops->exit(net);
 }
 
 int rpl_register_pernet_device(struct extended_pernet_operations *ops)