Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753640AbbKBQ2J (ORCPT ); Mon, 2 Nov 2015 11:28:09 -0500 Received: from mail-wm0-f42.google.com ([74.125.82.42]:36355 "EHLO mail-wm0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751923AbbKBQ2F (ORCPT ); Mon, 2 Nov 2015 11:28:05 -0500 Date: Mon, 2 Nov 2015 16:28:01 +0000 From: Matt Fleming To: kernel test robot Cc: Paolo Bonzini , lkp@01.org, LKML , Andy Lutomirski , Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , Borislav Petkov , Laszlo Ersek Subject: Re: [lkp] [x86/setup] f5f3497cad: BUG: kernel boot crashed Message-ID: <20151102162551.GB2331@codeblueprint.co.uk> References: <87io5rpn1c.fsf@yhuang-dev.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87io5rpn1c.fsf@yhuang-dev.intel.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2083 Lines: 40 On Wed, 28 Oct, at 01:41:51PM, kernel test robot wrote: > FYI, we noticed the below changes on > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > commit f5f3497cad8c8416a74b9aaceb127908755d020a ("x86/setup: Extend low identity map to cover whole kernel range") > > > +------------------------------------------------+------------+------------+ > | | 8a53554e12 | f5f3497cad | > +------------------------------------------------+------------+------------+ > | boot_successes | 19 | 10 | > | boot_failures | 2 | 9 | > | IP-Config:Auto-configuration_of_network_failed | 2 | 2 | > | BUG:kernel_boot_crashed | 0 | 7 | > +------------------------------------------------+------------+------------+ > > > [ 0.053410] smpboot: CPU0: GenuineIntel GenuineIntel QEMU Virtual CPU version 2.4.0QEMU Virtual CPU version 2.4.0 (family: 0x6, model: 0x6 (family: 0x6, model: 0x6, stepping: 0x3) > , stepping: 0x3) > [ 0.056666] Performance Events: > [ 0.056666] Performance Events: no PMU driver, software events only. > no PMU driver, software events only. > [ 0.060520] CPU 1 irqstacks, hard=8a832000 soft=8a834000 > [ 0.060520] CPU 1 irqstacks, hard=8a832000 soft=8a834000 > [ 0.061605] x86: Booting SMP configuration: > [ 0.061605] x86: Booting SMP configuration: > [ 0.062445] .... node #0, CPUs: > [ 0.062445] .... node #0, CPUs: #1 #1 > Elapsed time: 10 > BUG: kernel boot crashed Yikes! Yeah, I can reproduce this. It appears the STARTUP IPI code is triggering this crash in wakeup_secondary_cpu_via_init(). I'll take a look unless anyone else has any bright ideas? -- 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/