netdev - [PATCH 03/33] nf_conntrack_gre: nf_ct_gre_keymap

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Date:	Mon,  8 Sep 2008 07:02:40 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	kaber@...sh.net
Cc:	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
	containers@...ts.linux-foundation.org
Subject: [PATCH 03/33] nf_conntrack_gre: nf_ct_gre_keymap_flush() fixlet

It does "kfree(list_head)" which looks wrong because entity that was
allocated is definitely not list_head.

However, this all works because list_head is first item in
struct nf_ct_gre_keymap .

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>

diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index 2752b74..c5a7822 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -45,12 +45,12 @@ static LIST_HEAD(gre_keymap_list);
 
 void nf_ct_gre_keymap_flush(void)
 {
-	struct list_head *pos, *n;
+	struct nf_ct_gre_keymap *km, *tmp;
 
 	write_lock_bh(&nf_ct_gre_lock);
-	list_for_each_safe(pos, n, &gre_keymap_list) {
-		list_del(pos);
-		kfree(pos);
+	list_for_each_entry_safe(km, tmp, &gre_keymap_list, list) {
+		list_del(&km->list);
+		kfree(km);
 	}
 	write_unlock_bh(&nf_ct_gre_lock);
 }
--
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