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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 C480AC33C99 for ; Tue, 7 Jan 2020 05:56:43 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6B71C207E0 for ; Tue, 7 Jan 2020 05:56:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B71C207E0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C47C48E0014; Tue, 7 Jan 2020 00:56:42 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BF7DC8E0001; Tue, 7 Jan 2020 00:56:42 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B0DE98E0014; Tue, 7 Jan 2020 00:56:42 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0170.hostedemail.com [216.40.44.170]) by kanga.kvack.org (Postfix) with ESMTP id 9644D8E0001 for ; Tue, 7 Jan 2020 00:56:42 -0500 (EST) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 3540F180AD801 for ; Tue, 7 Jan 2020 05:56:42 +0000 (UTC) X-FDA: 76349779044.26.pigs23_5780cb231d940 X-HE-Tag: pigs23_5780cb231d940 X-Filterd-Recvd-Size: 4644 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf12.hostedemail.com (Postfix) with ESMTP for ; Tue, 7 Jan 2020 05:56:41 +0000 (UTC) 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 2EC0A31B; Mon, 6 Jan 2020 21:56:40 -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 7447B3F703; Mon, 6 Jan 2020 21:56:38 -0800 (PST) Subject: Re: 87c4696d57 ("mm/debug: Add tests validating architecture page .."): [ 1.395296] kernel BUG at include/linux/mm.h:2007! To: kernel test robot Cc: Ingo Molnar , Andrew Morton , Linux Memory Management List , Christophe Leroy , LKP References: <20191226084925.GX2760@shao2-debian> From: Anshuman Khandual Message-ID: Date: Tue, 7 Jan 2020 11:27:50 +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: <20191226084925.GX2760@shao2-debian> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 12/26/2019 02:19 PM, kernel test robot wrote: > 46cf053efe Linux 5.5-rc3 > 87c4696d57 mm/debug: Add tests validating architecture page table helpers > +------------------------------------------+----------+------------+ > | | v5.5-rc3 | 87c4696d57 | > +------------------------------------------+----------+------------+ > | boot_successes | 32 | 0 | > | boot_failures | 0 | 11 | > | kernel_BUG_at_include/linux/mm.h | 0 | 11 | > | invalid_opcode:#[##] | 0 | 11 | > | EIP:pgtable_pmd_page_dtor | 0 | 11 | > | Kernel_panic-not_syncing:Fatal_exception | 0 | 11 | > +------------------------------------------+----------+------------+ > > If you fix the issue, kindly add following tag > Reported-by: kernel test robot > > [ 1.390624] smp: Brought up 1 node, 2 CPUs > [ 1.390624] smpboot: Max logical packages: 2 > [ 1.390624] smpboot: Total of 2 processors activated (8783.48 BogoMIPS) > [ 1.391537] debug_vm_pgtable: debug_vm_pgtable: Validating architecture page table helpers > [ 1.392382] page:f29b85c0 refcount:0 mapcount:0 mapping:00000000 index:0x0 > [ 1.393415] raw: 02800000 f29b8624 f29b8584 00000000 00000000 edc22280 ffffffff 00000000 > [ 1.394178] page dumped because: VM_BUG_ON_PAGE(page->pmd_huge_pte) > [ 1.394820] ------------[ cut here ]------------ > [ 1.395296] kernel BUG at include/linux/mm.h:2007! > [ 1.395942] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC PTI > [ 1.396463] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.5.0-rc3-00001-g87c4696d57b5e #1 > [ 1.396722] EIP: pgtable_pmd_page_dtor+0x1a/0x23 > [ 1.396722] Code: d4 8a 27 c2 e8 16 81 04 00 b2 01 5b 88 d0 5d c3 55 89 e5 52 89 45 fc 8b 45 fc 83 78 08 00 74 0c ba e1 e2 e0 c1 e8 14 99 13 00 <0f> 0b e8 92 eb 13 00 c9 c3 55 89 e5 52 89 45 fc 8b 45 fc 90 8d 74 > [ 1.396722] EAX: c1e0e2e1 EBX: 2dc2e000 ECX: 00000000 EDX: c1e0e2e1 > [ 1.396722] ESI: edc2b000 EDI: edc4e010 EBP: ee287f14 ESP: ee287f10 > [ 1.396722] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010246 > [ 1.396722] CR0: 80050033 CR2: ffffffff CR3: 0226a000 CR4: 001406b0 > [ 1.396722] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 > [ 1.396722] DR6: fffe0ff0 DR7: 00000400 > [ 1.396722] Call Trace: > [ 1.396722] mop_up_one_pmd+0x48/0x62 > [ 1.396722] pgd_free+0x35/0xe0 > [ 1.396722] __mmdrop+0x42/0x96 > [ 1.396722] debug_vm_pgtable+0x460/0x47c > [ 1.396722] kernel_init_freeable+0x84/0x172 > [ 1.396722] ? rest_init+0xe9/0xe9 > [ 1.396722] kernel_init+0xd/0xe9 > [ 1.396722] ret_from_fork+0x1e/0x28 > [ 1.396722] Modules linked in: > [ 1.396742] ---[ end trace 9c6f11143a94c590 ]--- > [ 1.397197] EIP: pgtable_pmd_page_dtor+0x1a/0x23 Hello, Wondering if some one could help me with steps to reproduce this crash ? Could not reproduce the problem with the patch applied on Linux 5.5-rc3 when built with the config file provided here on a standard KVM guest. - Anshuman From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============0196279225659472463==" MIME-Version: 1.0 From: Anshuman Khandual To: lkp@lists.01.org Subject: Re: 87c4696d57 ("mm/debug: Add tests validating architecture page .."): [ 1.395296] kernel BUG at include/linux/mm.h:2007! Date: Tue, 07 Jan 2020 11:27:50 +0530 Message-ID: In-Reply-To: <20191226084925.GX2760@shao2-debian> List-Id: --===============0196279225659472463== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On 12/26/2019 02:19 PM, kernel test robot wrote: > 46cf053efe Linux 5.5-rc3 > 87c4696d57 mm/debug: Add tests validating architecture page table helpers > +------------------------------------------+----------+------------+ > | | v5.5-rc3 | 87c4696d57 | > +------------------------------------------+----------+------------+ > | boot_successes | 32 | 0 | > | boot_failures | 0 | 11 | > | kernel_BUG_at_include/linux/mm.h | 0 | 11 | > | invalid_opcode:#[##] | 0 | 11 | > | EIP:pgtable_pmd_page_dtor | 0 | 11 | > | Kernel_panic-not_syncing:Fatal_exception | 0 | 11 | > +------------------------------------------+----------+------------+ > = > If you fix the issue, kindly add following tag > Reported-by: kernel test robot > = > [ 1.390624] smp: Brought up 1 node, 2 CPUs > [ 1.390624] smpboot: Max logical packages: 2 > [ 1.390624] smpboot: Total of 2 processors activated (8783.48 BogoMIPS) > [ 1.391537] debug_vm_pgtable: debug_vm_pgtable: Validating architectur= e page table helpers > [ 1.392382] page:f29b85c0 refcount:0 mapcount:0 mapping:00000000 index= :0x0 > [ 1.393415] raw: 02800000 f29b8624 f29b8584 00000000 00000000 edc22280= ffffffff 00000000 > [ 1.394178] page dumped because: VM_BUG_ON_PAGE(page->pmd_huge_pte) > [ 1.394820] ------------[ cut here ]------------ > [ 1.395296] kernel BUG at include/linux/mm.h:2007! > [ 1.395942] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC PTI > [ 1.396463] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.5.0-rc3-00001-= g87c4696d57b5e #1 > [ 1.396722] EIP: pgtable_pmd_page_dtor+0x1a/0x23 > [ 1.396722] Code: d4 8a 27 c2 e8 16 81 04 00 b2 01 5b 88 d0 5d c3 55 8= 9 e5 52 89 45 fc 8b 45 fc 83 78 08 00 74 0c ba e1 e2 e0 c1 e8 14 99 13 00 <= 0f> 0b e8 92 eb 13 00 c9 c3 55 89 e5 52 89 45 fc 8b 45 fc 90 8d 74 > [ 1.396722] EAX: c1e0e2e1 EBX: 2dc2e000 ECX: 00000000 EDX: c1e0e2e1 > [ 1.396722] ESI: edc2b000 EDI: edc4e010 EBP: ee287f14 ESP: ee287f10 > [ 1.396722] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010= 246 > [ 1.396722] CR0: 80050033 CR2: ffffffff CR3: 0226a000 CR4: 001406b0 > [ 1.396722] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 > [ 1.396722] DR6: fffe0ff0 DR7: 00000400 > [ 1.396722] Call Trace: > [ 1.396722] mop_up_one_pmd+0x48/0x62 > [ 1.396722] pgd_free+0x35/0xe0 > [ 1.396722] __mmdrop+0x42/0x96 > [ 1.396722] debug_vm_pgtable+0x460/0x47c > [ 1.396722] kernel_init_freeable+0x84/0x172 > [ 1.396722] ? rest_init+0xe9/0xe9 > [ 1.396722] kernel_init+0xd/0xe9 > [ 1.396722] ret_from_fork+0x1e/0x28 > [ 1.396722] Modules linked in: > [ 1.396742] ---[ end trace 9c6f11143a94c590 ]--- > [ 1.397197] EIP: pgtable_pmd_page_dtor+0x1a/0x23 Hello, Wondering if some one could help me with steps to reproduce this crash ? Could not reproduce the problem with the patch applied on Linux 5.5-rc3 when built with the config file provided here on a standard KVM guest. - Anshuman --===============0196279225659472463==--