From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030329AbWHFBjE (ORCPT ); Sat, 5 Aug 2006 21:39:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751484AbWHFBjD (ORCPT ); Sat, 5 Aug 2006 21:39:03 -0400 Received: from omx1-ext.sgi.com ([192.48.179.11]:57225 "EHLO omx1.americas.sgi.com") by vger.kernel.org with ESMTP id S1751478AbWHFBjC (ORCPT ); Sat, 5 Aug 2006 21:39:02 -0400 Date: Sat, 5 Aug 2006 18:38:42 -0700 From: Paul Jackson To: "Siddha, Suresh B" Cc: mingo@elte.hu, nickpiggin@yahoo.com.au, vatsa@in.ibm.com, Simon.Derr@bull.net, steiner@sgi.com, linux-kernel@vger.kernel.org, akpm@osdl.org Subject: Re: [BUG] sched: big numa dynamic sched domain memory corruption Message-Id: <20060805183842.a23a46cb.pj@sgi.com> In-Reply-To: <20060802143611.A19038@unix-os.sc.intel.com> References: <20060731070734.19126.40501.sendpatchset@v0> <20060731071242.GA31377@elte.hu> <20060731090440.A2311@unix-os.sc.intel.com> <20060731095429.d2b8801d.pj@sgi.com> <20060731101542.A2817@unix-os.sc.intel.com> <20060801235752.28519bda.pj@sgi.com> <20060802143611.A19038@unix-os.sc.intel.com> Organization: SGI X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.8.3; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Suresh wrote: > Paul, I will answer your questions on Suse bugzilla as that is a better > forum than lkml. Well ... can't say I ever got answers to some of my questions. But the critical one was answered - what patch(es) do I need to fix this memory corruption problem on SLES10 kernels. Earlier, Suresh had recommended [numbers added by pj]: > Basically SLES10 has to backport all these patches: > > 1) sched: fix group power for allnodes_domains > 2) sched_domai: Allocate sched_group structures dynamically > 3) sched: build_sched_domains() fix Only two of these three patches are needed for this memory corruption bug: 1) sched: fix group power for allnodes_domains 3) sched: build_sched_domains() fix Patch (2) addresses a separate problem, and has been reworked since anyway, and was the one that caused me grief backporting SLES10 as it depended on other patches not in SLES10. The key fix for the memory corruption is in patch (1). This patch went into Linus's tree on March 28, 2006. Patch (3) fixed a bug introduced in the first patch. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson 1.925.600.0401