From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarek Poplawski Subject: Re: NMI lockup, 2.6.26 release Date: Fri, 15 Aug 2008 16:16:06 +0200 Message-ID: <20080815141606.GA2916@ami.dom.local> References: <200807222142.23710.denys@visp.net.lb> <200808131102.34988.denys@visp.net.lb> <20080813084931.GC5367@ff.dom.local> <200808151614.00255.denys@visp.net.lb> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org To: Denys Fedoryshchenko Return-path: Received: from ik-out-1112.google.com ([66.249.90.181]:36895 "EHLO ik-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751680AbYHOOOS (ORCPT ); Fri, 15 Aug 2008 10:14:18 -0400 Received: by ik-out-1112.google.com with SMTP id c28so1007732ika.5 for ; Fri, 15 Aug 2008 07:14:16 -0700 (PDT) Content-Disposition: inline In-Reply-To: <200808151614.00255.denys@visp.net.lb> Sender: netdev-owner@vger.kernel.org List-ID: On Fri, Aug 15, 2008 at 04:13:59PM +0300, Denys Fedoryshchenko wrote: ... > After patching issue with locking, i apply 2.6.27-rc3 with those(locking, not > testing patch which limits resolution) patches on shaper who was crashing on > load. Without your patch it was crashing like before on 2.6.27-rc3 too (NMI > watchdog issuing panic, and machine not rebooting) after few hours of > running. > > Sadly i will not be able to test on this machine anymore, because i lost > access to it and had to change network structure. > > I will try to bring it locally to my office and simulate crash by generating > traffic, but most probably it will not work. Seems your patch is required for > mainline, but now i can test it only in theory, because another machine > running as shaper now, running HPET, not TSC (it is AMD Opteron). Since this bug looks so rare, probably hardware dependent, it looks like fixing this can wait until it bothers somebody again. The most important, some workaround has been found, and we can go back to to improve this. Thanks, Jarek P.