Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754032AbZGBLoL (ORCPT ); Thu, 2 Jul 2009 07:44:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752393AbZGBLnw (ORCPT ); Thu, 2 Jul 2009 07:43:52 -0400 Received: from mail-bw0-f225.google.com ([209.85.218.225]:57737 "EHLO mail-bw0-f225.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752120AbZGBLnt (ORCPT ); Thu, 2 Jul 2009 07:43:49 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=yA9648HjIkMRsHZyQqb0mj4dVX64XAULu7qECPruNSwRcPLXFH1/NXFElkqPeHnU8E hLfm/j7PAC5IOL7Qpy8NlJt/aA0H+W+q3ydbu7bLVQ/N5rw1+mncQu6vxAaV1zPF5NO8 qcwzYQuZS7DhK5Ju3O8gI5Y/tyftmosDW19JI= Date: Thu, 2 Jul 2009 11:43:46 +0000 From: Jarek Poplawski To: Andres Freund 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) Message-ID: <20090702114346.GB7402@ff.dom.local> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4A4C95FC.7040305@anarazel.de> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1445 Lines: 34 On Thu, Jul 02, 2009 at 01:11:56PM +0200, 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. It's very nice ;-) Alas we can see here only one side, so there is still some searching needed. I hope I'll be able to reproduce this later. Thanks for your work Andres, Jarek P. -- 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/