netdev - [PATCH net-next] netfilter: x_tables: xt

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Date:	Wed, 05 Sep 2012 18:37:53 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Cong Wang <xiyou.wangcong@...il.com>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Patrick McHardy <kaber@...sh.net>
Cc:	netfilter-devel@...r.kernel.org,
	Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: [PATCH net-next] netfilter: x_tables: xt_init() should run earlier

From: Eric Dumazet <edumazet@...gle.com>

Cong Wang reported a NULL dereference in xt_register_target()

It turns out xt_nat_init() was called before xt_init(), so xt array
was not yet setup.

xt_init() should be marked core_initcall() to solve this problem.

Reported-by: Cong Wang <xiyou.wangcong@...il.com>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/netfilter/x_tables.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 8d987c3..afcea11 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -1390,6 +1390,6 @@ static void __exit xt_fini(void)
 	kfree(xt);
 }
 
-module_init(xt_init);
+core_initcall(xt_init);
 module_exit(xt_fini);
 


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