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=-9.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 BD2C7C47082 for ; Wed, 26 May 2021 18:29:15 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8A982613B0 for ; Wed, 26 May 2021 18:29:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8A982613B0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:In-Reply-To:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=CsQ5p7gRy0hM9lVuGhVHjAM+xpwfiNAeGwSJpQqG4SU=; b=XInnb216U+IsO3 zaGQgqOGyDBPxYWE3u/CQFPOzGrM4tryODvAYiPLwt3u6czoAYaWJUZy3DmUaRot5ZbKY0xlj/OPy fcme3khN6j9lY5XWWbu776NNXLFKL6yQuAEtMJWc8QaC7XyCHr3MihDy5TdJWT7Nkd+s5ts9BRyxy Bhv5YzPLIt6MCQnTEb5z+h50399XndHwfFGMZ9zDBGvZv/hnL4NxvVQbBs0JSATRZshwDg+2RETdD qJXqaiwMU877yy/gSz1UVnuqwwP+xxSHd0DG0fQIzrVrftuNsToeky98w11sZvupyaS8dB/S2Pc4w oo6EX5+kfqvlhnHly3+A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1llyE5-00GVIQ-6i; Wed, 26 May 2021 18:25:55 +0000 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5] helo=mx0a-001b2d01.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1llxH9-00G5yS-8I for linux-arm-kernel@lists.infradead.org; Wed, 26 May 2021 17:25:01 +0000 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 14QH3ZDr093842; Wed, 26 May 2021 13:24:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=date : from : to : cc : subject : message-id : references : content-type : in-reply-to : mime-version; s=pp1; bh=W9GEqnBinXruebArN1y+MT1ffCt+eSjpcahPGOjqJe4=; b=VVFC8B35qJ5EQEdJZYhNbOqg+7hjxNYTHbEEqvzUKHUQn8HwuNYLvLkO4RlRFrv3s5kA LiuRa+xtlwJQOAxo9kelYWeXc1M/AccoyaRxJ/aGakHXoaef1jWs4KrIhlfDMYrGlyyT cQoSW6OruJ7TscH0zijFmygb8E6+ADN6l78jdVINHRL17voN0aPIrDZYId7Vmh6as3s4 ZgBii1uS/RSXoIB6QPVa6s++/s2UhenDaCPGwsp2mXk1WMDIddJ16VR2z4ziivS972qW fFcbaH3ROczXv+1AfpwXRj6wkP6rLX1LqPekfWvuv0INoi4AHcDOw9w62QXNplVAyln6 bw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 38st4413hx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 26 May 2021 13:24:52 -0400 Received: from m0098414.ppops.net (m0098414.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 14QH4vWk101963; Wed, 26 May 2021 13:24:52 -0400 Received: from ppma03ams.nl.ibm.com (62.31.33a9.ip4.static.sl-reverse.com [169.51.49.98]) by mx0b-001b2d01.pphosted.com with ESMTP id 38st4413hg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 26 May 2021 13:24:52 -0400 Received: from pps.filterd (ppma03ams.nl.ibm.com [127.0.0.1]) by ppma03ams.nl.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 14QH9B5O022776; Wed, 26 May 2021 17:24:50 GMT Received: from b06cxnps3075.portsmouth.uk.ibm.com (d06relay10.portsmouth.uk.ibm.com [9.149.109.195]) by ppma03ams.nl.ibm.com with ESMTP id 38sba2rhgh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 26 May 2021 17:24:50 +0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 14QHOmFu31785332 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 26 May 2021 17:24:48 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 38DA152050; Wed, 26 May 2021 17:24:48 +0000 (GMT) Received: from linux.ibm.com (unknown [9.145.39.77]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id D3FB95204F; Wed, 26 May 2021 17:24:46 +0000 (GMT) Date: Wed, 26 May 2021 20:24:44 +0300 From: Mike Rapoport To: "Qian Cai (QUIC)" Cc: Andrew Morton , David Hildenbrand , Catalin Marinas , Anshuman Khandual , Ard Biesheuvel , Linux Memory Management List , Will Deacon , Marc Zyngier , Linux Kernel Mailing List , Linux ARM Subject: Re: Arm64 crash while reading memory sysfs Message-ID: References: Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 701emXfpoA5TE6Ksza6VEiZcWlzOAt45 X-Proofpoint-ORIG-GUID: H2vnzDMmgn_6rR_9t7vySldh9aae885d X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-05-26_10:2021-05-26, 2021-05-26 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxscore=0 malwarescore=0 suspectscore=0 mlxlogscore=999 lowpriorityscore=0 spamscore=0 impostorscore=0 clxscore=1015 bulkscore=0 priorityscore=1501 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105260115 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210526_102459_565660_8032E18E X-CRM114-Status: GOOD ( 27.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, May 26, 2021 at 12:09:14PM +0000, Qian Cai (QUIC) wrote: > > > > On Tue, May 25, 2021 at 03:25:59PM +0000, Qian Cai (QUIC) wrote: > > > Reverting the patchset "arm64: drop pfn_valid_within() and simplify pfn_valid()" [1] from today's linux-next fixed a crash while > > reading files under /sys/devices/system/memory. Does the issue persist of you only revert the latest patch in the series? In next-20210525 it would be commit 89fb47db72f2 ("arm64-drop-pfn_valid_within-and-simplify-pfn_valid-fix") and commit dfe215e9bac2 ("arm64: drop pfn_valid_within() and simplify pfn_valid()"). > > Can you please send the beginning of the boot log, up to the > > "Memory: xK/yK available ..." > > line? > > [ 0.000000] NUMA: Failed to initialise from firmware > [ 0.000000] NUMA: Faking a node at [mem 0x0000000090000000-0x0000009fffffffff] > [ 0.000000] NUMA: NODE_DATA [mem 0x9ffefbabc0-0x9ffefbffff] > [ 0.000000] Zone ranges: > [ 0.000000] Normal [mem 0x0000000090000000-0x0000009fffffffff] > [ 0.000000] Movable zone start for each node > [ 0.000000] Early memory node ranges > [ 0.000000] node 0: [mem 0x0000000090000000-0x0000000091ffffff] > [ 0.000000] node 0: [mem 0x0000000092000000-0x00000000928fffff] > [ 0.000000] node 0: [mem 0x0000000092900000-0x00000000fffbffff] > [ 0.000000] node 0: [mem 0x00000000fffc0000-0x00000000ffffffff] > [ 0.000000] node 0: [mem 0x0000000880000000-0x0000000fffffffff] > [ 0.000000] node 0: [mem 0x0000008800000000-0x0000009ff5aeffff] > [ 0.000000] node 0: [mem 0x0000009ff5af0000-0x0000009ff5b2ffff] > [ 0.000000] node 0: [mem 0x0000009ff5b30000-0x0000009ff5baffff] > [ 0.000000] node 0: [mem 0x0000009ff5bb0000-0x0000009ff7deffff] > [ 0.000000] node 0: [mem 0x0000009ff7df0000-0x0000009ff7e5ffff] > [ 0.000000] node 0: [mem 0x0000009ff7e60000-0x0000009ff7ffffff] > [ 0.000000] node 0: [mem 0x0000009ff8000000-0x0000009fffffffff] > [ 0.000000] Initmem setup node 0 [mem 0x0000000090000000-0x0000009fffffffff] > [ 0.000000] mem auto-init: stack:off, heap alloc:on, heap free:off > [ 0.000000] Memory: 777216K/133955584K available (17920K kernel code, 118786K rwdata, 4416K rodata, 6080K init, 67276K bss, 17379072K reserved, 0K cma-reserved) The available and reserved sizes look weird. Can you post the log with memblock=debug and mminit_loglevel=4 added to the kernel command line? > > > [1] https://lore.kernel.org/kvmarm/20210511100550.28178-1-rppt@kernel.org/ > > > > > > [ 247.669668][ T1443] kernel BUG at include/linux/mm.h:1383! > > > [ 247.675987][ T1443] Internal error: Oops - BUG: 0 [#1] SMP > > > [ 247.681472][ T1443] Modules linked in: loop processor efivarfs ip_tables x_tables ext4 mbcache jbd2 dm_mod igb i2c_algo_bit > > nvme mlx5_core i2c_core nvme_core firmware_class > > > [ 247.696894][ T1443] CPU: 15 PID: 1443 Comm: ranbug Not tainted 5.13.0-rc3-next-20210524+ #11 > > > [ 247.705326][ T1443] Hardware name: MiTAC RAPTOR EV-883832-X3-0001/RAPTOR, BIOS 1.6 06/28/2020 > > > [ 247.713842][ T1443] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--) > > > [ 247.720536][ T1443] pc : test_pages_in_a_zone+0x23c/0x300 > > > [ 247.725935][ T1443] lr : test_pages_in_a_zone+0x23c/0x300 Do we know what PFN triggers it? Can you please run with this patch: diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 70620d0dd923..b9d1dd0dae5f 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1443,6 +1443,12 @@ struct zone *test_pages_in_a_zone(unsigned long start_pfn, i++; if (i == MAX_ORDER_NR_PAGES || pfn + i >= end_pfn) continue; + + if (!pfn_valid(pfn)) + pr_info("%s: pfn %lx is not valid\n", __func__, pfn); + else if (PagePoisoned(pfn_to_page(pfn))) + dump_page(pfn_to_page(pfn), ""); + /* Check if we got outside of the zone */ if (zone && !zone_spans_pfn(zone, pfn + i)) return NULL; -- Sincerely yours, Mike. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel