[PATCH v3 16/21] nfnetlink_log: exit_net cleanup check added

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

Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx>
---
 net/netfilter/nfnetlink_log.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index cad6498..85bc47a 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -1093,10 +1093,17 @@ static int __net_init nfnl_log_net_init(struct net *net)
 
 static void __net_exit nfnl_log_net_exit(struct net *net)
 {
+	unsigned int i;
+	struct nfnl_log_net *log = nfnl_log_pernet(net);
 #ifdef CONFIG_PROC_FS
 	remove_proc_entry("nfnetlink_log", net->nf.proc_netfilter);
 #endif
 	nf_log_unset(net, &nfulnl_logger);
+	for (i = 0; i < INSTANCE_BUCKETS; i++)
+		if (WARN_ONCE(!hlist_empty(&log->instance_table[i]),
+			      "net %x %s: instance_table is not empty\n",
+			      net->ns.inum, __func__))
+			break;
 }
 
 static struct pernet_operations nfnl_log_net_ops = {
-- 
2.7.4

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