Received: with ECARTIS (v1.0.0; list netdev); Sun, 02 Jan 2005 04:05:44 -0800 (PST)
Received: from outpost.ds9a.nl (postfix@outpost.ds9a.nl [213.244.168.210])
	by oss.sgi.com (8.13.0/8.13.0) with ESMTP id j02C5FhS014608
	for <netdev@oss.sgi.com>; Sun, 2 Jan 2005 04:05:35 -0800
Received: by outpost.ds9a.nl (Postfix, from userid 1000)
	id 7CD1D441A; Sun,  2 Jan 2005 13:13:49 +0100 (CET)
Date: Sun, 2 Jan 2005 13:13:49 +0100
From: bert hubert <ahu@ds9a.nl>
To: jamal <hadi@cyberus.ca>
Cc: Wichert Akkerman <wichert@wiggy.net>, netdev@oss.sgi.com
Subject: Re: unregister_netdev Annoyance WAS(Re: ing_filter debug messages
Message-ID: <20050102121349.GA27022@outpost.ds9a.nl>
Mail-Followup-To: bert hubert <ahu@ds9a.nl>, jamal <hadi@cyberus.ca>,
	Wichert Akkerman <wichert@wiggy.net>, netdev@oss.sgi.com
References: <20041230160643.GD24603@wiggy.net> <1104469666.1049.231.camel@jzny.localdomain> <20041231093827.GG24603@wiggy.net> <1104491510.1047.234.camel@jzny.localdomain> <20041231131553.GA7460@wiggy.net> <1104505838.1048.273.camel@jzny.localdomain> <20041231154844.GA11511@wiggy.net> <1104511697.1048.308.camel@jzny.localdomain>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1104511697.1048.308.camel@jzny.localdomain>
User-Agent: Mutt/1.3.28i
X-Virus-Scanned: ClamAV 0.80/645/Mon Dec 27 14:56:20 2004
	clamav-milter version 0.80j
	on 127.0.0.1
X-Virus-Status: Clean
X-archive-position: 13333
X-ecartis-version: Ecartis v1.0.0
Sender: netdev-bounce@oss.sgi.com
Errors-to: netdev-bounce@oss.sgi.com
X-original-sender: ahu@ds9a.nl
Precedence: bulk
X-list: netdev

> > However, the unregister_netdev problem still persists.
> 
> I am pretty sure its a different problem. Quick scan shows the
> register/unregister state machine may be at fault. 

This is a separate and known problem - see 'Re: Major deadlock:
unregister_netdevice: waiting for <device> to become free. Usage count = 1'
by Peter Bieringer.

For some reason this issue has been widely ignored. I see it as well here
and it is the one reason I don't entirely trust 2.6.10 yet in production.

Thanks for looking into it Jamal!

-- 
http://www.PowerDNS.com      Open source, database driven DNS Software 
http://lartc.org           Linux Advanced Routing & Traffic Control HOWTO