Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761138AbZCTTRT (ORCPT ); Fri, 20 Mar 2009 15:17:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759862AbZCTTRG (ORCPT ); Fri, 20 Mar 2009 15:17:06 -0400 Received: from cpsmtpm-eml101.kpnxchange.com ([195.121.3.5]:57128 "EHLO CPSMTPM-EML101.kpnxchange.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759869AbZCTTRF (ORCPT ); Fri, 20 Mar 2009 15:17:05 -0400 From: Frans Pop To: linux-s390@vger.kernel.org Subject: Re: [BUG,2.6.29-rc7,s390] SOLVED -- System goes into endless loop during boot or logon Date: Fri, 20 Mar 2009 20:17:00 +0100 User-Agent: KMail/1.9.9 Cc: Hendrik Brueckner , Peter Zijlstra , Ingo Molnar , Linux Kernel Mailing List References: <200903080835.14032.elendil@planet.nl> <200903080853.10704.elendil@planet.nl> <200903090253.34173.elendil@planet.nl> In-Reply-To: <200903090253.34173.elendil@planet.nl> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200903202017.01888.elendil@planet.nl> X-OriginalArrivalTime: 20 Mar 2009 19:17:02.0504 (UTC) FILETIME=[72E93280:01C9A990] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1740 Lines: 39 On Monday 09 March 2009, Frans Pop wrote: > Follow-up to an issue reported on the linux-s390 list, seen in the > Hercules S/390 emulator. > > On Sunday 08 March 2009, Frans Pop wrote: > > Well, not quite. It does boot successfully and I do get a login > > prompt. I can also login on the console or connect with SSH, but in > > both cases the system again gets into some loop before I actually get > > a shell prompt. > > During the bisection series the system would sometimes enter the loop > during the boot procedure, before I tried to logon. After it enters the > loop one processor just goes racing at 100%. > > I've bisected this to the following set of three patches: > commit ca109491f612aab5c8152207631c0444f63da97f > Author: Peter Zijlstra > Date: Tue Nov 25 12:43:51 2008 +0100 > hrtimer: removing all ur callback modes > commit 37810659ea7d9572c5ac284ade272f806ef8f788 > hrtimer: removing all ur callback modes, fix hotplug > commit a0a99b227da57f81319dd239bc4de811b0f530ec > hrtimer: removing all ur callback modes, fix > > I've not tried to bisect between these patches as the last two are > fixes. If needed I can do though. Just for the record, this issue was solved with the following commit (that also fixed the hang I saw during boot with 2.6.28): commit 4fa81ed27781a12f6303b9263056635ae74e3e21 Author: Martin Schwidefsky Date: Wed Mar 18 13:27:32 2009 +0100 [S390] __div64_31 broken for CONFIG_MARCH_G5 -- 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/