linux-kernel - Re: [PATCH] netfilter: ip6tables fix

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Message-ID: <49D8A6BB.5000700@cosmosbay.com>
Date:	Sun, 05 Apr 2009 14:40:27 +0200
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Graham Murray <graham@...rray.org.uk>,
	"David S. Miller" <davem@...emloft.net>
CC:	linux-kernel@...r.kernel.org,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH] netfilter: ip6tables fix

Eric Dumazet a écrit :
> Eric Dumazet a écrit :
>> Graham Murray a écrit :
>>> iptables gives me no problems at all, it is just ip6tables that
>>> fails. The first indication of this is during the init scripts when
>>> ip6tables-restore fails.
>> I see, its a plain bug in net/ipv6/netfilter/ip6_tables.c
>> function alloc_counters() always returns -ENOMEM
>>
>> Unfortunatly , its Sunday here and I have to run for lunch time with family :)
>>
>> If nobody beats me, I will do the fix in a couple of hours...
> 
> Here is the fix, thanks Graham for the report !
> 
> [PATCH] netfilter: ip6tables fix
> 
> ip6_tables.c	 alloc_counters() misses a return statement, making
> ip6tables -N always failing and leaking memory.

Oh well, this ChangeLog is not correct :(

Here is an updated patch with correct ChangeLog, sorry David.
(-L instead of -N, and there was no memory leak involved)

[PATCH] netfilter: ip6tables fix

ip6_tables.c alloc_counters() misses a return statement, making
ip6tables -L always failing.

Reported-by: Graham Murray <graham@...rray.org.uk>
Signed-off-by: Eric Dumazet <dada1@...mosbay.com>
---

diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index dfed176..800ae85 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -1033,6 +1033,8 @@ static struct xt_counters *alloc_counters(struct xt_table *table)
 
 	xt_free_table_info(info);
 
+	return counters;
+
  free_counters:
 	vfree(counters);
  nomem:


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