netdev - [PATCH 53/84] netfilter: CLUSTERIP: clusterip_seq

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Message-Id: <1273522735-24672-54-git-send-email-kaber@trash.net>
Date:	Mon, 10 May 2010 22:18:24 +0200
From:	kaber@...sh.net
To:	davem@...emloft.net
Cc:	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 53/84] netfilter: CLUSTERIP: clusterip_seq_stop() fix

From: Eric Dumazet <eric.dumazet@...il.com>

If clusterip_seq_start() memory allocation fails, we crash later in
clusterip_seq_start(), trying to kfree(ERR_PTR(-ENOMEM))

Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
Signed-off-by: Patrick McHardy <kaber@...sh.net>
---
 net/ipv4/netfilter/ipt_CLUSTERIP.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 5d70c43..c6be74e 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -599,7 +599,8 @@ static void *clusterip_seq_next(struct seq_file *s, void *v, loff_t *pos)
 
 static void clusterip_seq_stop(struct seq_file *s, void *v)
 {
-	kfree(v);
+	if (!IS_ERR(v))
+		kfree(v);
 }
 
 static int clusterip_seq_show(struct seq_file *s, void *v)
-- 
1.7.0.4

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