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Fri, 16 Jul 2021 20:13:07 +0000 Date: Fri, 16 Jul 2021 13:13:05 -0700 From: Roman Gushchin To: Murphy Zhou CC: Linux-Fsdevel , Linux MM Subject: Re: [fsdax xfs] Regression panic at inode_switch_wbs_work_fn Message-ID: References: Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: SJ0PR05CA0033.namprd05.prod.outlook.com (2603:10b6:a03:33f::8) To BYAPR15MB4136.namprd15.prod.outlook.com (2603:10b6:a03:96::24) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from carbon.dhcp.thefacebook.com (2620:10d:c090:400::5:3533) by SJ0PR05CA0033.namprd05.prod.outlook.com (2603:10b6:a03:33f::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4352.13 via Frontend Transport; Fri, 16 Jul 2021 20:13:07 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 25922e44-79b9-497e-471d-08d948962060 X-MS-TrafficTypeDiagnostic: BY3PR15MB4868: X-Microsoft-Antispam-PRVS: X-FB-Source: Internal X-MS-Oob-TLC-OOBClassifiers: OLM:8273; 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dkim=pass header.d=fb.com header.s=facebook header.b=BC0dp04l; spf=pass (imf09.hostedemail.com: domain of "prvs=68319d0bb3=guro@fb.com" designates 67.231.153.30 as permitted sender) smtp.mailfrom="prvs=68319d0bb3=guro@fb.com"; dmarc=pass (policy=reject) header.from=fb.com X-Stat-Signature: sxagjzo9w7qda9hmkgntsxbc1xhd94j4 X-Rspamd-Queue-Id: 18E243000101 X-Rspamd-Server: rspam01 X-HE-Tag: 1626466391-857711 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Jul 16, 2021 at 01:57:55PM +0800, Murphy Zhou wrote: > Hi, > > On Fri, Jul 16, 2021 at 12:07 AM Roman Gushchin wrote: > > > > On Thu, Jul 15, 2021 at 06:10:22PM +0800, Murphy Zhou wrote: > > > Hi, > > > > > > #Looping generic/270 of xfstests[1] on pmem ramdisk with > > > mount option: -o dax=always > > > mkfs.xfs option: -f -b size=4096 -m reflink=0 > > > can hit this panic now. > > > > > > #It's not reproducible on ext4. > > > #It's not reproducible without dax=always. > > > > Hi Murphy! > > > > Thank you for the report! > > > > Can you, please, check if the following patch fixes the problem? > > No. Still the same panic. Hm, can you, please, double check this? It seems that the patch fixes the problem for others (of course, it can be a different problem). CCed you on the proper patch, just sent to the list. Otherwise, can you, please, say on which line of code the panic happens? (using addr2line utility, for example) Thank you!