Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752917AbZGBLn5 (ORCPT ); Thu, 2 Jul 2009 07:43:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752045AbZGBLns (ORCPT ); Thu, 2 Jul 2009 07:43:48 -0400 Received: from mail.anarazel.de ([217.115.131.40]:33658 "EHLO smtp.anarazel.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751928AbZGBLnr (ORCPT ); Thu, 2 Jul 2009 07:43:47 -0400 Message-ID: <4A4C9D75.5010300@anarazel.de> Date: Thu, 02 Jul 2009 13:43:49 +0200 From: Andres Freund User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1pre) Gecko/20090629 Shredder/3.0b3pre MIME-Version: 1.0 To: Jarek Poplawski CC: LKML , netdev@vger.kernel.org, Stephen Hemminger , Patrick McHardy Subject: Re: Soft-Lockup/Race in networking in 2.6.31-rc1+195 (possibly caused by netem) References: <4A4A9DD6.8060800@anarazel.de> <4A4BAD5F.7050908@gmail.com> <4A4BD384.3090407@anarazel.de> <4A4C0144.5070203@anarazel.de> <20090702093031.GC4954@ff.dom.local> <20090702101207.GA7056@ff.dom.local> <4A4C95FC.7040305@anarazel.de> In-Reply-To: <4A4C95FC.7040305@anarazel.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1353 Lines: 33 On 07/02/2009 01:11 PM, Andres Freund wrote: > On 07/02/2009 12:12 PM, Jarek Poplawski wrote: >> On Thu, Jul 02, 2009 at 09:30:31AM +0000, Jarek Poplawski wrote: >>> On Thu, Jul 02, 2009 at 02:37:24AM +0200, Andres Freund wrote: >>> ... >>>> So I tried - and I did not catch any lockdep output before the crash. >>>> Unfortunately I do not have another machine on the same local >>>> network to >>>> catch any messages after the crash... So I could be missing some >>>> warning >>>> (I did synchronous logging though). >>>> Will check with netconsole tomorrow. >>> >>> Could you try if this patch changes anything? >> >> ...and maybe CONFIG_PACKET_MMAP turned off. > Ok. Removed the skb_orphan and turned of CONFIG_PACKET_MMAP. Seemingly > the same game. > I now had another computer to catch the netconsole output. Still no > lockdep warnings. > > Unfortunately the other computer was a windows machine with its strange > terminal, so long lines are wrapped at 80cols, but that shouldn't be too > bad. I will start trying to place the issue by testing with existing kernels between 2.6.30 and now. Andres -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/