From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933122Ab1KGRyI (ORCPT ); Mon, 7 Nov 2011 12:54:08 -0500 Received: from s15228384.onlinehome-server.info ([87.106.30.177]:47648 "EHLO mail.x86-64.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933138Ab1KGRyG (ORCPT ); Mon, 7 Nov 2011 12:54:06 -0500 Date: Mon, 7 Nov 2011 18:54:02 +0100 From: Borislav Petkov To: Dave Jones Cc: x86@kernel.org, Linux Kernel Subject: Re: BAD APICID ? Message-ID: <20111107175402.GA3384@gere.osrc.amd.com> References: <20111107173948.GA1344@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20111107173948.GA1344@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 07, 2011 at 12:39:48PM -0500, Dave Jones wrote: > We got a report from a Fedora user hitting a WARN_ON in the apic setup code. > > Here.. > > 1230 #ifdef CONFIG_X86_32 > 1231 /* > 1232 * APIC LDR is initialized. If logical_apicid mapping was > 1233 * initialized during get_smp_config(), make sure it matches the > 1234 * actual value. > 1235 */ > 1236 i = early_per_cpu(x86_cpu_to_logical_apicid, cpu); > 1237 WARN_ON(i != BAD_APICID && i != logical_smp_processor_id()); > 1238 /* always use the value from LDR */ > 1239 early_per_cpu(x86_cpu_to_logical_apicid, cpu) = > 1240 logical_smp_processor_id(); > > The full report is at https://bugzilla.redhat.com/show_bug.cgi?id=743930 > > Report is against our 3.0 builds, but that code look unchanged in 3.1 too, > and even in current Linus head. > > Any thoughts on what could cause this ? Already fixed upstream: 838312be46f3abfbdc175f81c3e54a857994476d Here's the whole thread: http://lkml.org/lkml/2011/10/14/231 HTH. -- Regards/Gruss, Boris. Advanced Micro Devices GmbH Einsteinring 24, 85609 Dornach GM: Alberto Bozzo Reg: Dornach, Landkreis Muenchen HRB Nr. 43632 WEEE Registernr: 129 19551