From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6A8DC33C99 for ; Tue, 7 Jan 2020 06:45:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B11942075A for ; Tue, 7 Jan 2020 06:45:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727176AbgAGGpE (ORCPT ); Tue, 7 Jan 2020 01:45:04 -0500 Received: from foss.arm.com ([217.140.110.172]:53050 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725781AbgAGGpE (ORCPT ); Tue, 7 Jan 2020 01:45:04 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id F3E7731B; Mon, 6 Jan 2020 22:45:02 -0800 (PST) Received: from [10.162.43.133] (p8cg001049571a15.blr.arm.com [10.162.43.133]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A45EE3F703; Mon, 6 Jan 2020 22:48:16 -0800 (PST) Subject: Re: [mm/debug] 87c4696d57: kernel_BUG_at_include/linux/mm.h To: kernel test robot Cc: linux-mm@kvack.org, Andrew Morton , Vlastimil Babka , Greg Kroah-Hartman , Thomas Gleixner , Mike Rapoport , Jason Gunthorpe , Dan Williams , Peter Zijlstra , Michal Hocko , Mark Rutland , Mark Brown , Steven Price , Ard Biesheuvel , Masahiro Yamada , Kees Cook , Tetsuo Handa , Matthew Wilcox , Sri Krishna chowdary , Dave Hansen , Russell King - ARM Linux , Michael Ellerman , Paul Mackerras , Martin Schwidefsky , Heiko Carstens , "David S. Miller" , Vineet Gupta , James Hogan , Paul Burton , Ralf Baechle , "Kirill A . Shutemov" , Gerald Schaefer , Christophe Leroy , Ingo Molnar , linux-snps-arc@lists.infradead.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, lkp@lists.01.org References: <20191227142255.GD2760@shao2-debian> From: Anshuman Khandual Message-ID: <490e77d6-a3ef-dd70-4c29-b90234f8a13d@arm.com> Date: Tue, 7 Jan 2020 12:16:02 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20191227142255.GD2760@shao2-debian> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org On 12/27/2019 07:52 PM, kernel test robot wrote: > [ 9.781974] kernel BUG at include/linux/mm.h:592! > [ 9.782810] invalid opcode: 0000 [#1] PTI > [ 9.783443] CPU: 0 PID: 1 Comm: swapper Not tainted 5.5.0-rc3-00001-g87c4696d57b5e #1 > [ 9.784528] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 > [ 9.785756] EIP: __free_pages+0x14/0x40 > [ 9.786442] Code: 0c 9c 5e fa 89 d8 e8 5b f3 ff ff 56 9d 5b 5e 5d c3 8d 74 26 00 90 8b 48 1c 55 89 e5 85 c9 75 16 ba b4 b6 84 d6 e8 ac 49 fe ff <0f> 0b 8d b4 26 00 00 00 00 8d 76 00 ff 48 1c 75 10 85 d2 75 07 e8 > [ 9.789697] EAX: d68761f7 EBX: ea52f000 ECX: ea4f8520 EDX: d684b6b4 > [ 9.790850] ESI: 00000000 EDI: ef45e000 EBP: ea501f08 ESP: ea501f08 > [ 9.791879] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010286 > [ 9.792783] CR0: 80050033 CR2: ffffffff CR3: 16d00000 CR4: 000406b0 > [ 9.792783] Call Trace: > [ 9.792783] free_pages+0x3c/0x50 > [ 9.792783] pgd_free+0x5a/0x170 > [ 9.792783] __mmdrop+0x42/0xe0 > [ 9.792783] debug_vm_pgtable+0x54f/0x567 > [ 9.792783] kernel_init_freeable+0x90/0x1e3 > [ 9.792783] ? rest_init+0xf0/0xf0 > [ 9.792783] kernel_init+0x8/0xf0 > [ 9.792783] ret_from_fork+0x19/0x24 > [ 9.792783] Modules linked in: > [ 9.792803] ---[ end trace 91b7335adcf0b656 ]--- > > > To reproduce: > > # build kernel > cd linux > cp config-5.5.0-rc3-00001-g87c4696d57b5e .config > make HOSTCC=gcc-7 CC=gcc-7 ARCH=i386 olddefconfig prepare modules_prepare bzImage > > git clone https://github.com/intel/lkp-tests.git > cd lkp-tests > bin/lkp qemu -k job-script # job-script is attached in this email Hello, As the failure might be happening during boot when the test executes, do we really need to run these LKP based QEMU environment in order to reproduce the problem ? Could not this be recreated on a standalone system. - Anshuman