netdev - Re: [PATCH] Re: [Bugme-new] [Bug 11571] New: u32

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Message-Id: <20090105.181451.193271284.davem@davemloft.net>
Date:	Mon, 05 Jan 2009 18:14:51 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jarkao2@...il.com
Cc:	akpm@...ux-foundation.org, netdev@...r.kernel.org,
	bugme-daemon@...zilla.kernel.org
Subject: Re: [PATCH] Re: [Bugme-new] [Bug 11571] New: u32_classify Kernel
 Panic

From: Jarek Poplawski <jarkao2@...il.com>
Date: Mon, 5 Jan 2009 13:52:45 +0000

> pkt_sched: cls_u32: Fix locking in u32_change()
> 
> New nodes are inserted in u32_change() under rtnl_lock() with wmb(),
> so without tcf_tree_lock() like in other classifiers (e.g. cls_fw).
> This isn't enough without rmb() on the read side, but on the other
> hand adding such barriers doesn't give any savings, so the lock is
> added instead.
> 
> Reported-by: m0sia <m0sia@...tinka.ru>
> Signed-off-by: Jarek Poplawski <jarkao2@...il.com>

Applied and queued up for -stable, thanks Jarek.
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