netdev - Re: [BUG] net_cls: Panic occured when net

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Message-ID: <20090531211252.GC2777@ami.dom.local>
Date:	Sun, 31 May 2009 23:12:52 +0200
From:	Jarek Poplawski <jarkao2@...il.com>
To:	jamal <hadi@...erus.ca>
Cc:	Minoru Usui <usui@....nes.nec.co.jp>, netdev@...r.kernel.org,
	containers@...ts.linux-foundation.org
Subject: Re: [BUG] net_cls: Panic occured when net_cls subsystem use

On Sun, May 31, 2009 at 09:43:47AM -0400, jamal wrote:
> On Sun, 2009-05-31 at 09:24 -0400, jamal wrote:
> 
> > This would imply the classifier is buggy. I will stare at the different
> > classifier - and if any exhibits such traits it needs to be fixed
> 
> I couldnt find any case where this is possible in the current code. If
> you have a specific example, we need to fix it.

I'm almost sure these commands (right or wrong) can trigger such a leak:

$ sudo tc qdisc add dev lo root handle 1: htb
$ sudo tc filter add dev lo proto ip pref 1 handle 800::1 u32 match u32 0 0 classid 1:1
$ sudo tc filter add dev lo proto ip pref 2 handle 800::1 u32 match u32 0 0 classid 1:1
RTNETLINK answers: File exists

Cheers,
Jarek P.
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