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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 A897EC2B9F7 for ; Wed, 26 May 2021 06:40:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 26D72613C9 for ; Wed, 26 May 2021 06:40:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 26D72613C9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C91F56B0036; Wed, 26 May 2021 02:40:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C38A06B006E; Wed, 26 May 2021 02:40:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AA56D6B0070; Wed, 26 May 2021 02:40:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0207.hostedemail.com [216.40.44.207]) by kanga.kvack.org (Postfix) with ESMTP id 709486B0036 for ; Wed, 26 May 2021 02:40:19 -0400 (EDT) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 00F288249980 for ; Wed, 26 May 2021 06:40:19 +0000 (UTC) X-FDA: 78182432958.06.4A4F6C4 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by imf15.hostedemail.com (Postfix) with ESMTP id 66568A0001C7 for ; Wed, 26 May 2021 06:40:14 +0000 (UTC) Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 14Q6Xb3T080790; Wed, 26 May 2021 02:40:13 -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=qkTltOOEw1YGnc1KY8pva2+CHx60RP31oqQO/YyPM98=; b=MobCuICAMBF9EsESTHRsJiMSe2VGJpES9NG0FDU+LTMwxNOxgyPGvvgyTg/i0Jqy0VJ4 l9fClRZ7byrvzzjJZF0PRL9qb4F/OslTYBDhYi3OWjDgF+S4/3ujRnd7+Ngeis3d8AZz jaaLY7OJ4YTTla8MnnHdQs0rnmtkz9uhXbo6k7nI43GSVm+SVlxvpNG3D/oE+l3nPwI2 c73oyS3nMZoutEmWctIZmC3i94gOtm5VuBOm7pXiz6P7xtGPtiQSqQgSdqf0S22Ecu4E ey0XTwsXwodVt325vwbkzRlHWM6RfDpG5ss7ZoQdweecOMfX0nah6xRCRoTy2zHBxoPb 2A== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 38sgr2gtg1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 26 May 2021 02:40:12 -0400 Received: from m0098393.ppops.net (m0098393.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 14Q6XvQK082174; Wed, 26 May 2021 02:40:12 -0400 Received: from ppma04fra.de.ibm.com (6a.4a.5195.ip4.static.sl-reverse.com [149.81.74.106]) by mx0a-001b2d01.pphosted.com with ESMTP id 38sgr2gtes-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 26 May 2021 02:40:12 -0400 Received: from pps.filterd (ppma04fra.de.ibm.com [127.0.0.1]) by ppma04fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 14Q6XV42019134; Wed, 26 May 2021 06:40:09 GMT Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by ppma04fra.de.ibm.com with ESMTP id 38s1ht06m5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 26 May 2021 06:40:09 +0000 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 14Q6e7c523527868 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 26 May 2021 06:40:07 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 19FC842045; Wed, 26 May 2021 06:40:07 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D586342041; Wed, 26 May 2021 06:40:05 +0000 (GMT) Received: from linux.ibm.com (unknown [9.145.39.77]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Wed, 26 May 2021 06:40:05 +0000 (GMT) Date: Wed, 26 May 2021 09:40:03 +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-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: WkcJw4Bam72ZJKEFAxvMPt_MCNaj4EUy X-Proofpoint-GUID: hLAI5wI0U758LBzexuSnJIMmNFa4grFt 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_04:2021-05-25,2021-05-26 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 mlxlogscore=593 lowpriorityscore=0 impostorscore=0 bulkscore=0 spamscore=0 clxscore=1011 priorityscore=1501 adultscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105260043 Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=MobCuICA; dmarc=pass (policy=none) header.from=ibm.com; spf=pass (imf15.hostedemail.com: domain of rppt@linux.ibm.com designates 148.163.156.1 as permitted sender) smtp.mailfrom=rppt@linux.ibm.com X-Stat-Signature: i4ht4qgwudjngmutkcdoqq3byej7ypaf X-Rspamd-Queue-Id: 66568A0001C7 X-Rspamd-Server: rspam02 X-HE-Tag: 1622011214-313313 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: Hi, 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. Can you please send the beginning of the boot log, up to the "Memory: xK/yK available ..." 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 > [ 247.731327][ T1443] sp : ffff800023f8f670 > [ 247.735327][ T1443] x29: ffff800023f8f670 x28: 000000000000a000 x27: 000000000000a000 > [ 247.743156][ T1443] x26: ffffffbfffe00000 x25: ffff800011c6f738 x24: dfff800000000000 > [ 247.750984][ T1443] x23: 0000000000002000 x22: ffff009f7efa29c0 x21: 0000000000000000 > [ 247.758812][ T1443] x20: ffffffffffffffff x19: 0000000000008000 x18: ffff00084f9d3370 > [ 247.766640][ T1443] x17: 0000000000000000 x16: 0000000000000007 x15: 0000000000000078 > [ 247.774467][ T1443] x14: 0000000000000000 x13: ffff800011c6eea4 x12: ffff60136cee0574 > [ 247.782295][ T1443] x11: 1fffe0136cee0573 x10: ffff60136cee0573 x9 : dfff800000000000 > [ 247.790123][ T1443] x8 : ffff009b67702b9b x7 : 0000000000000001 x6 : ffff009b67702b98 > [ 247.797951][ T1443] x5 : 00009fec9311fa8d x4 : ffff009b67702b98 x3 : 1fffe00109f3a529 > [ 247.805778][ T1443] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000034 > [ 247.813606][ T1443] Call trace: > [ 247.816738][ T1443] test_pages_in_a_zone+0x23c/0x300 > [ 247.821784][ T1443] valid_zones_show+0x1e0/0x298 > [ 247.826483][ T1443] dev_attr_show+0x50/0xc8 > [ 247.830747][ T1443] sysfs_kf_seq_show+0x164/0x368 > [ 247.835533][ T1443] kernfs_seq_show+0x130/0x198 > [ 247.840143][ T1443] seq_read_iter+0x344/0xd50 > [ 247.844581][ T1443] kernfs_fop_read_iter+0x32c/0x4a8 > [ 247.849625][ T1443] new_sync_read+0x2bc/0x4e8 > [ 247.854063][ T1443] vfs_read+0x18c/0x340 > [ 247.858066][ T1443] ksys_read+0xf8/0x1e0 > [ 247.862068][ T1443] __arm64_sys_read+0x74/0xa8 > [ 247.866591][ T1443] invoke_syscall.constprop.0+0xdc/0x1d8 > [ 247.872072][ T1443] do_el0_svc+0xe4/0x298 > [ 247.876162][ T1443] el0_svc+0x20/0x30 > [ 247.879906][ T1443] el0_sync_handler+0xb0/0xb8 > [ 247.884429][ T1443] el0_sync+0x178/0x180 > [ 247.888435][ T1443] Code: b0005ee1 912b8021 910b0021 97fc57ac (d4210000) > [ 247.895217][ T1443] ---[ end trace 4ff9f5cbe7443f54 ]--- > [ 247.900522][ T1443] Kernel panic - not syncing: Oops - BUG: Fatal exception > [ 247.907501][ T1443] SMP: stopping secondary CPUs > [ 247.912122][ T1443] Kernel Offset: disabled > [ 247.916296][ T1443] CPU features: 0x00000251,20000846 > [ 247.921340][ T1443] Memory Limit: none > [ 247.925100][ T1443] ---[ end Kernel panic - not syncing: Oops - BUG: Fatal exception ]--- > -- Sincerely yours, Mike.