netdev - [PATCH 2/6] netfilter: nfnetlink_queue: Unregister pernet subsys in case of init failure

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Date:	Mon, 14 Dec 2015 12:25:42 +0100
From:	Pablo Neira Ayuso <pablo@...filter.org>
To:	netfilter-devel@...r.kernel.org
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 2/6] netfilter: nfnetlink_queue: Unregister pernet subsys in case of init failure

From: Nikolay Borisov <kernel@...p.com>

Commit 3bfe049807c2403 ("netfilter: nfnetlink_{log,queue}:
Register pernet in first place") reorganised the initialisation
order of the pernet_subsys to avoid "use-before-initialised"
condition. However, in doing so the cleanup logic in nfnetlink_queue
got botched in that the pernet_subsys wasn't cleaned in case
nfnetlink_subsys_register failed. This patch adds the necessary
cleanup routine call.

Fixes: 3bfe049807c2403 ("netfilter: nfnetlink_{log,queue}: Register pernet in first place")
Signed-off-by: Nikolay Borisov <kernel@...p.com>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
 net/netfilter/nfnetlink_queue.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index 3e24054..861c661 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -1419,6 +1419,7 @@ static int __init nfnetlink_queue_init(void)
 
 cleanup_netlink_notifier:
 	netlink_unregister_notifier(&nfqnl_rtnl_notifier);
+	unregister_pernet_subsys(&nfnl_queue_net_ops);
 out:
 	return status;
 }
-- 
2.1.4

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