From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarek Poplawski Subject: Re: Tc bug (kernel crash) more info Date: Fri, 31 Aug 2007 12:17:33 +0200 Message-ID: <20070831101733.GA3108@ff.dom.local> References: <20070830001632.ki4u5bx9sow40o4s@mail.himki.net> <20070830063110.GB1677@ff.dom.local> <20070830072718.GC1677@ff.dom.local> <46D68937.7030305@bigtelecom.ru> <20070830123751.GA2778@ff.dom.local> <46D7BD75.3080008@bigtelecom.ru> <20070831075909.GA1772@ff.dom.local> <46D7D072.5060508@bigtelecom.ru> <20070831090509.GC1772@ff.dom.local> <46D7E050.1030303@bigtelecom.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org To: Badalian Vyacheslav Return-path: Received: from mx10.go2.pl ([193.17.41.74]:51268 "EHLO poczta.o2.pl" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755604AbXHaKQK (ORCPT ); Fri, 31 Aug 2007 06:16:10 -0400 Content-Disposition: inline In-Reply-To: <46D7E050.1030303@bigtelecom.ru> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, Aug 31, 2007 at 01:33:04PM +0400, Badalian Vyacheslav wrote: > > >>i not have testing mashine. > >>we have 2 mashine and dynamic routing. if 1 mashine down - all traffic > >>go to second mashine. > >>I can test is on this mashines but i need that testing mashine will > >>reboot on kernel panic (sysctl message). No freezes =) > >> > >>Ok. i try 2.6.23-rc4. > >> > > > >...but without testing machine it can be too much risk! New versions > >of kernel can break your applications (sometimes they should be at > >least rebuilded). > > > >So, maybe you would better try this, 'less testing', version of my patch: > > > > > I risk only if RC kernel broke hardware. Mashines use only iptables and > TC. All Scrips backuped. But sometime a new kernel can break binary compatibility with previous one (e.g. after data structures change) and e.g. iptables or iproute tools stop working or work in an unpredictable way. There were a few such changes before 2.6.20 - I don't track current changes too much. And I'm sure your system uses much more than iptables or TC, even without your knowledge. > But if i need to reboot PC by hand (if it freeze) i need drive to > servers-room =) Of course, if previous kernel always boots by default, or even there is a possibility to use for testing different partition with a copy of main system this risk should be much smaller. > > > BTW, I think after this BUG could be something more about other CPUs. > > Could you check this? > > I send to you all info that catch NETCONSOLE. i don't cut any info... So, it seems something was broken. But, I meant, there can be sometimes interesting things a few lines before or after the infos too. > > Now 1 mashine work at *"2.6.23-rc4-git2 > " > Backup mashine use 2.6.18* > BTW, -git versions are usually more risky than -rc. And, maybe, let this 2.6.18 better stay away from this testing... Thanks, Jarek P.