linux-kernel - Re: Regression caused by commit "netfilter: iptables: lock free counters"

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Date:	Mon, 30 Mar 2009 14:08:08 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Roman Mindalev <r000n@...0n.net>
CC:	Eric Dumazet <dada1@...mosbay.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	LKML <linux-kernel@...r.kernel.org>, netfilter@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: Regression caused by commit "netfilter: iptables: lock free counters"

Roman Mindalev wrote:
> On Mon, 30 Mar 2009 09:32:51 +0200
> Eric Dumazet <dada1@...mosbay.com> wrote:
> 
>> Could you try following patch ?
>>
>> [PATCH] netfilter: use rcu_read_bh() in ipt_do_table()
>>
>> Commit 784544739a25c30637397ace5489eeb6e15d7d49
>> (netfilter: iptables: lock free counters) forgot to disable BH
>> in arpt_do_table(), ipt_do_table() and  ip6t_do_table()
>>
>> Use rcu_read_lock_bh() instead of rcu_read_lock() cures the problem.
>>
>> Reported-and-bisected-by: Roman Mindalev <r000n@...0n.net>
>> Signed-off-by: Eric Dumazet <dada1@...mosbay.com>
>> ---
> 
> 2.6.29-git4 and 2.6.29-git6 both works fine for me with this patch. 
> Thanks, Eric!

Thanks indeed Eric :) Dave, please apply.

Acked-by: Patrick McHardy <kaber@...sh.net>


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