[PATCH v2 16/21] x_tables: exit_net cleanup check added

[Vasily Averin]

Be sure that xt.tables array initialized in net_init hook was return
to initial state.

Signed-off-by: Vasily Averin <v...@virtuozzo.com>
---
 net/netfilter/x_tables.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index d8571f4..8125363 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -1714,8 +1714,18 @@ static int __net_init xt_net_init(struct net *net)
        return 0;
 }
 
+static void __net_exit xt_net_exit(struct net *net)
+{
+       int i;
+
+       for (i = 0; i < NFPROTO_NUMPROTO; i++)
+               WARN(!list_empty(&net->xt.tables[i]),
+                    "%s: tables list is not empty\n", __func__);
+}
+
 static struct pernet_operations xt_net_ops = {
        .init = xt_net_init,
+       .exit = xt_net_exit,
 };
 
 static int __init xt_init(void)
-- 
2.7.4