netdev - [PATCH v4 12/18] nfnetlink_gueue: exit

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Date:   Sun, 12 Nov 2017 11:47:01 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     netdev@...r.kernel.org
Cc:     Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
        Florian Westphal <fw@...len.de>,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org
Subject: [PATCH v4 12/18] nfnetlink_gueue: exit_net cleanup check added

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

Signed-off-by: Vasily Averin <vvs@...tuozzo.com>
---
 net/netfilter/nfnetlink_queue.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index c979662..fd41077 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -1512,10 +1512,16 @@ static int __net_init nfnl_queue_net_init(struct net *net)
 
 static void __net_exit nfnl_queue_net_exit(struct net *net)
 {
+	unsigned int i;
+	struct nfnl_queue_net *q = nfnl_queue_pernet(net);
+
 	nf_unregister_queue_handler(net);
 #ifdef CONFIG_PROC_FS
 	remove_proc_entry("nfnetlink_queue", net->nf.proc_netfilter);
 #endif
+	for (i = 0; i < INSTANCE_BUCKETS; i++)
+		if (WARN_ON_ONCE(!hlist_empty(&q->instance_table[i])))
+			break;
 }
 
 static void nfnl_queue_net_exit_batch(struct list_head *net_exit_list)
-- 
2.7.4