From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: Re: Boot failure on x86_64 (OOPS set_cpu_sibling_map() ) Date: Thu, 30 Jul 2009 15:56:23 +0200 Message-ID: <20090730135623.GB16659@aftab> References: <20090730182143.eadf36e6.sfr@canb.auug.org.au> <4A718338.6050907@in.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from sg2ehsobe002.messaging.microsoft.com ([207.46.51.76]:28071 "EHLO SG2EHSOBE002.bigfish.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750925AbZG3N4i convert rfc822-to-8bit (ORCPT ); Thu, 30 Jul 2009 09:56:38 -0400 Content-Disposition: inline In-Reply-To: <4A718338.6050907@in.ibm.com> Sender: linux-next-owner@vger.kernel.org List-ID: To: Sachin Sant Cc: Stephen Rothwell , linux-next@vger.kernel.org, LKML , Ingo Molnar Hi, On Thu, Jul 30, 2009 at 04:55:44PM +0530, Sachin Sant wrote: > Today's Next failed to boot on a x86_64 box with following traces >=20 > ACPI: Core revision 20090625 > BUG: unable to handle kernel NULL pointer dereference at (null) > IP: [] set_cpu_sibling_map+0x24f/0x353 I can't trigger it here, please send me your .config. In the meantime, you could try the following: -- diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 3ede593..5fd57fe 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1070,6 +1070,7 @@ void __init native_smp_prepare_cpus(unsigned int = max_cpus) for_each_possible_cpu(i) { zalloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL); zalloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL); + zalloc_cpumask_var(&per_cpu(cpu_node_map, i), GFP_KERNEL); zalloc_cpumask_var(&cpu_data(i).llc_shared_map, GFP_KERNEL); } set_cpu_sibling_map(0); --=20 1.6.3.3 --=20 Regards/Gruss, Boris. Operating | Advanced Micro Devices GmbH System | Karl-Hammerschmidt-Str. 34, 85609 Dornach b. M=FCnchen, Ger= many Research | Gesch=E4ftsf=FChrer: Thomas M. McCoy, Giuliano Meroni Center | Sitz: Dornach, Gemeinde Aschheim, Landkreis M=FCnchen (OSRC) | Registergericht M=FCnchen, HRB Nr. 43632