From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison overwritten Date: Mon, 21 Jul 2008 21:21:38 +0200 Message-ID: <20080721192138.GA27672@elte.hu> References: <20080717214222.GA29449@elte.hu> <20080718091146.GQ6875@elte.hu> <20080721094110.GA16029@elte.hu> <84144f020807210252k68d5cf65i8c7ae3c11cecc046@mail.gmail.com> <20080721100627.GA5953@2ka.mipt.ru> <20080721105051.GA5830@elte.hu> <20080721112515.GA4777@2ka.mipt.ru> <20080721115555.GA24176@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Pekka Enberg , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Vegard Nossum , "Rafael J. Wysocki" , cl@linux-foundation.org, davem@davemloft.net, Auke Kok To: Evgeniy Polyakov Return-path: Received: from mx3.mail.elte.hu ([157.181.1.138]:33760 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754125AbYGUTWq (ORCPT ); Mon, 21 Jul 2008 15:22:46 -0400 Content-Disposition: inline In-Reply-To: <20080721115555.GA24176@elte.hu> Sender: netdev-owner@vger.kernel.org List-ID: * Ingo Molnar wrote: > * Evgeniy Polyakov wrote: > > > > I could try run tests with netconsole deactivated, if you think > > > that's a worthwile line of probing this problem. (although that > > > would make me do blind tests in essence - having kernel log output > > > is really essential.) > > > > Let's try this way first. If system will continue to crash, we will > > add some debug options in various pathes. Existing reports do not > > contain enough information unfortunately, so we will not lose too > > much. > > ok. I've turned off netconsole - 8 successful bootups in a row so far. > The box is a slow booter/builder with an 8 kernels/hour test > throughput, so if everything goes fine we should have meaningful > results in about 10 hours. > > ( there are other, faster testboxes in -tip testing with 33 kernels/hour > build+boot throughput where we'd have to wait only 2 hours - but as > per Murphy's law they dont trigger this bug ;-) 70 bootups with netconsole turned off, and not a single crash so far. So it's now a strong likelyhood that this crash is a combination of e1000e+netconsole. Ingo