From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 94CDF371053; Mon, 13 Apr 2026 21:37:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=198.175.65.17 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776116243; cv=fail; b=BHLwzsidGiidd0mLGMc+fUpGzaMFT4+3/C63yyWbgwCHo8WKZeBEN9m0TA3clYQ59NDrNyVxYtFdBSuH9kXEHLXobNom3yQe9jSGpIhPHg+zq+IYwvco1bjRrA5ECvccNtiuhV3IgFdsQz6I8U1/7G3wlgJYwf5vZ+K56wWr4KU= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776116243; c=relaxed/simple; bh=aA8K3IQKKSZpGYirYd61j5ZGoE8FDsHJNwRWtZDpYA4=; h=Date:From:To:CC:Subject:Message-ID:References:Content-Type: Content-Disposition:In-Reply-To:MIME-Version; b=QwZbq8py/LiZgnjSZKrcuoe79uDt6odFMJppu81FfenGjFCDcbiTGw6Fd/eKk1mUE8lbj8s+k0Tj6IiYxjq161ylQhc+VC8NbnfU1o9ZpH+7zEAdEFR9ozhEwC3uh3NZV6MlbLjpk2GGJujBoy/Mf4S3Etd7BimJAwpargLAqc8= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=kpAKPeed; arc=fail smtp.client-ip=198.175.65.17 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="kpAKPeed" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1776116241; x=1807652241; h=date:from:to:cc:subject:message-id:references: in-reply-to:mime-version; bh=aA8K3IQKKSZpGYirYd61j5ZGoE8FDsHJNwRWtZDpYA4=; b=kpAKPeedDdJMs5Y0jDU8j70qJ5X8QWfHFd85QF4YdhQbenDx9ColX7ZY V5100vOfTxijCNAJTdBp2fR0ST6yGQAFijqf24T2HNjnUXv1WcHo2PLgM N/aLdqlA8xeMs7TF2PgrclSJT3aE0uaVyf7Vo9IIN/fPaIcTjIkHhmoSd sNoOGdt1A5ZQW+SraSZkfBO3AyTo5O7w/cwrplUUFC0I3FNqtFmv80pjw cDK6YEbEIHMXDLg4abqbZRBmOEV1re4FPlWZiJMYClWgRpiVkUgphyJx4 MGvAvJ77l4qUoCSvJYQ9r3uUvCU6LZHfVmUNsaulhTQ2M+77XAar+b2Eq w==; X-CSE-ConnectionGUID: UDr6jhOaT9Kt+bDT5Imyww== X-CSE-MsgGUID: cYMSKxzkRdGT9QRdvH4+rw== X-IronPort-AV: E=McAfee;i="6800,10657,11758"; a="77027123" X-IronPort-AV: E=Sophos;i="6.23,178,1770624000"; d="scan'208";a="77027123" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Apr 2026 14:37:19 -0700 X-CSE-ConnectionGUID: PgdWRmBiThubHwzak6JBLw== X-CSE-MsgGUID: DpaXrQO4SgWC0NzZIB/RMA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,178,1770624000"; d="scan'208";a="223407523" Received: from fmsmsx901.amr.corp.intel.com ([10.18.126.90]) by fmviesa009.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Apr 2026 14:37:18 -0700 Received: from FMSMSX902.amr.corp.intel.com (10.18.126.91) by fmsmsx901.amr.corp.intel.com (10.18.126.90) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.37; Mon, 13 Apr 2026 14:37:18 -0700 Received: from fmsedg902.ED.cps.intel.com (10.1.192.144) by FMSMSX902.amr.corp.intel.com (10.18.126.91) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.37 via Frontend Transport; Mon, 13 Apr 2026 14:37:18 -0700 Received: from PH7PR06CU001.outbound.protection.outlook.com (52.101.201.23) by edgegateway.intel.com (192.55.55.82) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.37; Mon, 13 Apr 2026 14:37:16 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=XON1kGM1zTDyNygU6Ryfg2MGkKCLgE8hjMVz5hP/JBTi5/B4jsvAN+MqN6W6gkEzz937Snl4ZARVe2BxmZQW7BNb8u9DQ4tOwbyKtvnFOG/TDCQUXzPFt73AqXdUbSHjsdFYDbSizo5p4YfGNxnY5euECqV3qTq9j2HwWUkyG4dKnHc7tni687SDSLbaWbf6sdKWtlxZqes2ItV6Dm5Ow/nEhi69W5aBcCNeKyjjqF6UlT0FJ/mDXfyy5CqwKrvyCo1AUt9T36Ww2Yv2Llg/5Ty3gE3N9deE17OrJm1KQbxPBQjSGZtXVWNjTArH+MCjcqID+syEtneLmmhSqYDPRA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=+BzWz9K6yqK1ZcDBkPatRNQ59aVF1lxVqKStH/PUBuI=; b=CXqmsPkLswzyWZUJf78DrCBaKs9D2VV44rEVl8V0CRQEcSUzWFPzpPz6eRDIg124Dncnmh79MIYQCqSTwHdqqNMCO3ySBMKfJJkFNl5CBlWPzDijF9eB9Lk7gi3JvCfSrOGIr1nSJ8mK8HiPloENv0jHu3Ig90/F4cDe9B+MJ9OthFUxfst+xox7/kZY0QIDmXQ9/ih7SwNAkrV9Vhz+x7eth6SX/ZAd+9jXEEOe9HxHP8E5eWynFbMCYorQvhTcmTdRdJCBx3c2idaQxRAb0zg1gsZnN1G8gkT7cbOStgLvxgARIyNvFVrfbhst5jetsNUbTg1e4GuoReQH4sv2xA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from PH3PPF9E162731D.namprd11.prod.outlook.com (2603:10b6:518:1::d3c) by MN6PR11MB8242.namprd11.prod.outlook.com (2603:10b6:208:474::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9769.44; Mon, 13 Apr 2026 21:37:06 +0000 Received: from PH3PPF9E162731D.namprd11.prod.outlook.com ([fe80::9618:33dd:29ce:41d1]) by PH3PPF9E162731D.namprd11.prod.outlook.com ([fe80::9618:33dd:29ce:41d1%6]) with mapi id 15.20.9818.017; Mon, 13 Apr 2026 21:37:06 +0000 Date: Mon, 13 Apr 2026 16:40:59 -0500 From: Ira Weiny To: Ira Weiny , Alison Schofield , John Groves CC: John Groves , Miklos Szeredi , "Dan Williams" , Bernd Schubert , "John Groves" , Jonathan Corbet , Shuah Khan , Vishal Verma , "Dave Jiang" , Matthew Wilcox , Jan Kara , Alexander Viro , David Hildenbrand , Christian Brauner , "Darrick J . Wong" , Randy Dunlap , Jeff Layton , Amir Goldstein , Jonathan Cameron , Stefan Hajnoczi , "Joanne Koong" , Josef Bacik , "Bagas Sanjaya" , Chen Linxuan , James Morse , Fuad Tabba , "Sean Christopherson" , Shivank Garg , "Ackerley Tng" , Gregory Price , "Aravind Ramesh" , Ajay Joshi , "venkataravis@micron.com" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "nvdimm@lists.linux.dev" , "linux-cxl@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" Subject: Re: [PATCH V10 0/8] dax: prepare for famfs Message-ID: <69dd62eba432e_20039100b5@iweiny-mobl.notmuch> References: <20260327210311.79099-1-john@jagalactic.com> <0100019d311bed04-dbb67b48-c55d-4e6a-962a-a0f8b714f2e7-000000@email.amazonses.com> <69dd576924b0f_24f910029@iweiny-mobl.notmuch> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <69dd576924b0f_24f910029@iweiny-mobl.notmuch> X-ClientProxiedBy: MW4PR03CA0327.namprd03.prod.outlook.com (2603:10b6:303:dd::32) To PH3PPF9E162731D.namprd11.prod.outlook.com (2603:10b6:518:1::d3c) Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH3PPF9E162731D:EE_|MN6PR11MB8242:EE_ X-MS-Office365-Filtering-Correlation-Id: 668d9bda-3db5-4d5e-5bc4-08de99a4cf3e X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|366016|22082099003|56012099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PH3PPF9E162731D.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(376014)(1800799024)(366016)(22082099003)(56012099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?deiiqDCn8umNdkG9dqfW//uOLt/FJl+K1KQ0LrGjSmBzdG83Cq/FRVGCNMwa?= =?us-ascii?Q?V8iES1WJVzlO0YckzE0aqB5et7LO5LQVlRNYbk9Wh+KigM/JQTyeTOwFqr6Y?= =?us-ascii?Q?RQp4LO5s0a8HhiKoA3caKNetotsdx9RbyuKBQMTpzq2tKUKuuisYJroep3zp?= =?us-ascii?Q?Du84hm9T9j+l2+dmJH13N8TI2H0FjfEM2kH6GRTRTvlNXFFsOgFu12E0NqVP?= =?us-ascii?Q?q+SQ7iqRk5wISg7FAIr+0uS4/h5jShoRlbx5hVC029Yg58OqqnF15AEq8vyg?= =?us-ascii?Q?UTX2aZZB4UGnyT6UgPzvWgPKiZGJGPcA3j1lodZBo0DSCGPb3vGIrG1con0W?= =?us-ascii?Q?fYXoYixTR36cOhdc00zRfHLGUV9kcDdBnnvoz6+kthQ+kFbi9Y4nmkcM2awa?= =?us-ascii?Q?n9xiDUpiI4tj//JRQEXPEuOEajce2nx2BMO/sbIIEtIozrpTlNepYutCl+Us?= =?us-ascii?Q?ZjqxrhIsQoty95wxwoadFr7UirvDHblP88bXfmpvEXpVXOW3If5c3Nvu5m6b?= =?us-ascii?Q?olN8SMYlU7nWIW+gs3QT6PtO+mJNhcJSAwzNG6G6Foz5IgjWhVwtRRmIs9NM?= =?us-ascii?Q?oj5mRpjHytSb6bA/uerq0QklLMtYTF9T3a748Gf8GlyAWjHtc8hSrTtY9GBz?= =?us-ascii?Q?I/LzZcOX8xHEb8JOjE88t4a+4k+nIIc8Y56BGQexo97SO6ofgMPEaW0OgPv2?= =?us-ascii?Q?JEIliqRMHBlssNVeQ88KYqupBBvg5JsOEAtNavb3Fz7XIGDNvwXMIC33Ogh/?= =?us-ascii?Q?o4kaEQmy3J0I47/JnE7sFJ+usCGKrCrW+Cw9JcSC+TvHm13I2oagqDxtGVU/?= =?us-ascii?Q?dMI5IKHgfu/mpNQ8ymomTu5UNmHfbcvIG0GBwKia9A4yZ32KtmiouiuTZbL0?= =?us-ascii?Q?j0OWqz8K3fdWoJScOM+j2niJCTk8+fxLqtZGa/QYxx6nNaIBQ/0Kjy6uZ0JA?= =?us-ascii?Q?avyazUYFG81RbAK0RnQWiOC1bkwy8y6zOBQc+Yhnwc7FjEAkCcipCHkULjcY?= =?us-ascii?Q?RIZw18Qdnt1PyaQK01sGxK4hIr8xP2GsE932VYUU3nNAvWpvBy5WMcHkL7mi?= =?us-ascii?Q?mjzoiOj6sILTFDHWWQ+nzx5tnaAiePkCzpaCU1xYSr3Yz47CKhSJStnFaxNv?= =?us-ascii?Q?f0uLWvNkHlnArp8fVEuWjx1FElno0u9hMHJSSr1Axpd4HCOJxs3M9xGK+NeP?= =?us-ascii?Q?08n34N+C/bgDaz528B8XUxNg5o0e+zKweXQqKXKngoiEyALQI019cD6j+UTE?= =?us-ascii?Q?1Mn/nRHdEtoZzCMNO6qAy0UMC3NsEV8cM8AD0Z0GnwBv2ltEYatTVGo94L0u?= =?us-ascii?Q?/LobdB1zxv4yNtpvtepcXM1/hkNSHz91CnNGH4zLKGV8RLWoyo3+lv8+8wY/?= =?us-ascii?Q?OR8Jl9CjbzmFzMZUpnMy/0No/1d0yIXmeLtkKw92Wv1lOyAzCyiXqJKfrISx?= =?us-ascii?Q?Qxk1M3uVItQygCgwUe9aWVtdX9qCt1S1aAVmtMUfe38O0pxNu8x5TkT+kDnS?= =?us-ascii?Q?EALuB3vT0orQUUD5mt4uLtNXDa+Y2yd3miFzjon4VgiRsZGwPI9ZiQdgpvAh?= =?us-ascii?Q?VjgDPpMBLrwYyAodljLzeS7q+0GPycL76md/FIY0GsrroSpNZ+Ea90lB3aWc?= =?us-ascii?Q?8T9K5deUppyHdrVuEdqUaX0KnPVDJ20wJM5bCXGaezKHQYnPAk8edJhU+UPO?= =?us-ascii?Q?NwLVJyxvmoh0jtCysJ+s27JkBH5x8rI73rje9z3wClpmDkkOSO5LZhmITFHA?= =?us-ascii?Q?8uA3Nhf83A=3D=3D?= X-Exchange-RoutingPolicyChecked: tuRIqV27uqVHj31yOEyHluaeknwE7bBzz4nNh0QAWuY2dDVQSGpDkMupw3HOwwC/Qz6GyHb9Q2mzd6uJA5UaHrhYpV60Kf5Inyn6zGY0hnRJWOFgnGuCAJ+O1Doiy82387if+u+9VBXLJarRX5U8zSzIJOFosd+VLe396oofEfLJvGcFpEvoiy2A5S0nPXKhwuWpAt+BsF/hIADB4PCjGlSnRX/WAv7ZD/imDJPNkdunAoNl6OTIAr5KkGJwlAy8oRmZADbjNaDFmyARBRnSf4eKSQorK9zHN7zzbc/NC/s758QD/xgyaeUKDyydl7D7tNKMkPtE2nFKQuOz0wnlJA== X-MS-Exchange-CrossTenant-Network-Message-Id: 668d9bda-3db5-4d5e-5bc4-08de99a4cf3e X-MS-Exchange-CrossTenant-AuthSource: PH3PPF9E162731D.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Apr 2026 21:37:06.6677 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: yBjp0J0TOwW9xMouSecYuxZHHDqfxe09zj/8fv5dHRe0ZfG0sfG+DvsaaJGlZ8cNUYmjVYevf2wxPqJwp3G3Tg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN6PR11MB8242 X-OriginatorOrg: intel.com Ira Weiny wrote: > Alison Schofield wrote: > > On Fri, Mar 27, 2026 at 09:03:26PM +0000, John Groves wrote: > > > From: John Groves > > > [snip] > > > > > > Description: > > > > > > This patch series introduces the required dax support for famfs. > > > Previous versions of the famfs series included both dax and fuse patches. > > > This series separates them into separate patch series' (and the fuse > > > series dependends on this dax series). > > > > > > The famfs user space code can be found at [1] > > > > > > Dax Overview: > > > > > > This series introduces a new "famfs mode" of devdax, whose driver is > > > drivers/dax/fsdev.c. This driver supports dax_iomap_rw() and > > > dax_iomap_fault() calls against a character dax instance. A dax device > > > now can be converted among three modes: 'system-ram', 'devdax' and > > > 'famfs' via daxctl or sysfs (e.g. unbind devdax and bind famfs instead). > > > > > > In famfs mode, a dax device initializes its pages consistent with the > > > fsdaxmode of pmem. Raw read/write/mmap are not supported in this mode, > > > but famfs is happy in this mode - using dax_iomap_rw() for read/write and > > > dax_iomap_fault() for mmap faults. > > > > > > > Here's what I found: > > > > famfs-v10 on 7.0-rc5 + ndctl v84: > > dax suite all pass 13/13, so no regression appears > > > > famfs-v10 on 7.0-rc5 + > > (ndctl v84 w https://github.com/jagalactic/ndctl/tree/famfs > > top 3 patches + edit daxctl-famfs.sh to use cxl-test: > > > > existing dax suite keeps passing > > daxctl-famfs.sh oops w the new test at # Restore original mode" > > seems easy to repoduce, maybe cannot go back to system-ram??? > > John have you been able to reproduce this? > > Ira John I've found a different crash with the daxctl-famfs.sh test. See below. I got the ndctl repo with the test from Alison. I'm not at all clear what is happening at this point... Ira [ 519.007691] BUG: TASK stack guard page was hit at ffffc90001767fc8 (stack is ffffc90001768000..ffffc9000176c000) [ 519.007694] Oops: stack guard page: 0000 [#1] SMP NOPTI [ 519.007697] CPU: 0 UID: 0 PID: 1465 Comm: daxctl Tainted: G O 7.0.0-rc6ira+ #68 PREEMPT(full) [ 519.007699] Tainted: [O]=OOT_MODULE [ 519.007700] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20250812-19.fc42 08/12/2025 [ 519.007701] RIP: 0010:sprintf+0xc/0x50 [ 519.007709] Code: 24 10 e8 37 f8 ff ff c9 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 48 83 ec 48 48 8d 45 10 <48> 89 54 24 28 48 89 f2 be ff ff ff 7f 48 89 4c 24 30 48 89 e1 48 [ 519.007710] RSP: 0018:ffffc90001767fd0 EFLAGS: 00010282 [ 519.007712] RAX: ffffc90001768028 RBX: ffffc90001768068 RCX: 0000000000001e08 [ 519.007712] RDX: 0000000000000207 RSI: ffffffff82abab1c RDI: ffffc90001768068 [ 519.007713] RBP: ffffc90001768018 R08: 0000000000000000 R09: 0000000000000001 [ 519.007713] R10: ffffc90001768110 R11: 0000000000000002 R12: 0000000000000800 [ 519.007714] R13: ffffc90001768068 R14: 0000000000000000 R15: ffffffff839c71c0 [ 519.007715] FS: 00007fb94b807c80(0000) GS:ffff8880f9e9c000(0000) knlGS:0000000000000000 [ 519.007717] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 519.007717] CR2: ffffc90001767fc8 CR3: 0000000077d2e005 CR4: 0000000000770ef0 [ 519.007720] PKRU: 55555554 [ 519.007721] Call Trace: [ 519.007722] [ 519.007723] info_print_prefix+0xc0/0xe0 [ 519.007728] record_print_text+0x58/0x2d0 [ 519.007730] printk_get_next_message+0xd8/0x220 [ 519.007733] console_flush_one_record+0x1a5/0x390 [ 519.007735] console_unlock+0x5a/0xe0 [ 519.007737] vprintk_emit+0x2e8/0x340 [ 519.007738] _printk+0x48/0x50 [ 519.007741] ? printk_get_next_message+0x70/0x220 [ 519.007743] __dump_page.cold+0x3c/0x331 [ 519.007746] ? dump_page+0x1b/0x30 [ 519.007748] dump_page+0x1b/0x30 [ 519.007749] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007751] get_pfnblock_migratetype+0xa/0x20 [ 519.007753] __dump_page.cold+0x1c6/0x331 [ 519.007755] ? dump_page+0x1b/0x30 [ 519.007756] dump_page+0x1b/0x30 [ 519.007756] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007757] get_pfnblock_migratetype+0xa/0x20 [ 519.007758] __dump_page.cold+0x1c6/0x331 [ 519.007760] ? dump_page+0x1b/0x30 [ 519.007761] dump_page+0x1b/0x30 [ 519.007761] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007762] get_pfnblock_migratetype+0xa/0x20 [ 519.007763] __dump_page.cold+0x1c6/0x331 [ 519.007765] ? dump_page+0x1b/0x30 [ 519.007765] dump_page+0x1b/0x30 [ 519.007766] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007767] get_pfnblock_migratetype+0xa/0x20 [ 519.007772] __dump_page.cold+0x1c6/0x331 [ 519.007774] ? dump_page+0x1b/0x30 [ 519.007775] dump_page+0x1b/0x30 [ 519.007775] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007776] get_pfnblock_migratetype+0xa/0x20 [ 519.007777] __dump_page.cold+0x1c6/0x331 [ 519.007779] ? dump_page+0x1b/0x30 [ 519.007780] dump_page+0x1b/0x30 [ 519.007780] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007781] get_pfnblock_migratetype+0xa/0x20 [ 519.007782] __dump_page.cold+0x1c6/0x331 [ 519.007784] ? dump_page+0x1b/0x30 [ 519.007785] dump_page+0x1b/0x30 [ 519.007785] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007786] get_pfnblock_migratetype+0xa/0x20 [ 519.007787] __dump_page.cold+0x1c6/0x331 [ 519.007789] ? dump_page+0x1b/0x30 [ 519.007790] dump_page+0x1b/0x30 [ 519.007790] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007791] get_pfnblock_migratetype+0xa/0x20 [ 519.007792] __dump_page.cold+0x1c6/0x331 [ 519.007794] ? dump_page+0x1b/0x30 [ 519.007795] dump_page+0x1b/0x30 [ 519.007795] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007796] get_pfnblock_migratetype+0xa/0x20 [ 519.007797] __dump_page.cold+0x1c6/0x331 [ 519.007799] ? dump_page+0x1b/0x30 [ 519.007800] dump_page+0x1b/0x30 [ 519.007800] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007801] get_pfnblock_migratetype+0xa/0x20 [ 519.007802] __dump_page.cold+0x1c6/0x331 [ 519.007804] ? dump_page+0x1b/0x30 [ 519.007805] dump_page+0x1b/0x30 [ 519.007808] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007809] get_pfnblock_migratetype+0xa/0x20 [ 519.007810] __dump_page.cold+0x1c6/0x331 [ 519.007812] ? dump_page+0x1b/0x30 [ 519.007813] dump_page+0x1b/0x30 [ 519.007813] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007814] get_pfnblock_migratetype+0xa/0x20 [ 519.007815] __dump_page.cold+0x1c6/0x331 [ 519.007817] ? dump_page+0x1b/0x30 [ 519.007818] dump_page+0x1b/0x30 [ 519.007818] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007819] get_pfnblock_migratetype+0xa/0x20 [ 519.007820] __dump_page.cold+0x1c6/0x331 [ 519.007822] ? dump_page+0x1b/0x30 [ 519.007823] dump_page+0x1b/0x30 [ 519.007824] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007824] get_pfnblock_migratetype+0xa/0x20 [ 519.007825] __dump_page.cold+0x1c6/0x331 [ 519.007827] ? dump_page+0x1b/0x30 [ 519.007828] dump_page+0x1b/0x30 [ 519.007829] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007829] get_pfnblock_migratetype+0xa/0x20 [ 519.007830] __dump_page.cold+0x1c6/0x331 [ 519.007833] ? dump_page+0x1b/0x30 [ 519.007833] dump_page+0x1b/0x30 [ 519.007834] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007834] get_pfnblock_migratetype+0xa/0x20 [ 519.007835] __dump_page.cold+0x1c6/0x331 [ 519.007838] ? dump_page+0x1b/0x30 [ 519.007838] dump_page+0x1b/0x30 [ 519.007839] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007840] get_pfnblock_migratetype+0xa/0x20 [ 519.007841] __dump_page.cold+0x1c6/0x331 [ 519.007843] ? dump_page+0x1b/0x30 [ 519.007843] dump_page+0x1b/0x30 [ 519.007844] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007845] get_pfnblock_migratetype+0xa/0x20 [ 519.007846] __dump_page.cold+0x1c6/0x331 [ 519.007848] ? dump_page+0x1b/0x30 [ 519.007849] dump_page+0x1b/0x30 [ 519.007849] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007850] get_pfnblock_migratetype+0xa/0x20 [ 519.007851] __dump_page.cold+0x1c6/0x331 [ 519.007853] ? dump_page+0x1b/0x30 [ 519.007854] dump_page+0x1b/0x30 [ 519.007854] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007855] get_pfnblock_migratetype+0xa/0x20 [ 519.007856] __dump_page.cold+0x1c6/0x331 [ 519.007858] ? dump_page+0x1b/0x30 [ 519.007859] dump_page+0x1b/0x30 [ 519.007859] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007860] get_pfnblock_migratetype+0xa/0x20 [ 519.007861] __dump_page.cold+0x1c6/0x331 [ 519.007863] ? dump_page+0x1b/0x30 [ 519.007864] dump_page+0x1b/0x30 [ 519.007864] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007865] get_pfnblock_migratetype+0xa/0x20 [ 519.007866] __dump_page.cold+0x1c6/0x331 [ 519.007868] ? dump_page+0x1b/0x30 [ 519.007869] dump_page+0x1b/0x30 [ 519.007869] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007870] get_pfnblock_migratetype+0xa/0x20 [ 519.007871] __dump_page.cold+0x1c6/0x331 [ 519.007873] ? dump_page+0x1b/0x30 [ 519.007874] dump_page+0x1b/0x30 [ 519.007874] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007875] get_pfnblock_migratetype+0xa/0x20 [ 519.007876] __dump_page.cold+0x1c6/0x331 [ 519.007878] ? dump_page+0x1b/0x30 [ 519.007879] dump_page+0x1b/0x30 [ 519.007880] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007880] get_pfnblock_migratetype+0xa/0x20 [ 519.007881] __dump_page.cold+0x1c6/0x331 [ 519.007883] ? dump_page+0x1b/0x30 [ 519.007884] dump_page+0x1b/0x30 [ 519.007885] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007885] get_pfnblock_migratetype+0xa/0x20 [ 519.007886] __dump_page.cold+0x1c6/0x331 [ 519.007889] ? dump_page+0x1b/0x30 [ 519.007889] dump_page+0x1b/0x30 [ 519.007890] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007890] get_pfnblock_migratetype+0xa/0x20 [ 519.007891] __dump_page.cold+0x1c6/0x331 [ 519.007894] ? dump_page+0x1b/0x30 [ 519.007894] dump_page+0x1b/0x30 [ 519.007895] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007895] get_pfnblock_migratetype+0xa/0x20 [ 519.007896] __dump_page.cold+0x1c6/0x331 [ 519.007899] ? dump_page+0x1b/0x30 [ 519.007899] dump_page+0x1b/0x30 [ 519.007900] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007900] get_pfnblock_migratetype+0xa/0x20 [ 519.007901] __dump_page.cold+0x1c6/0x331 [ 519.007904] ? dump_page+0x1b/0x30 [ 519.007904] dump_page+0x1b/0x30 [ 519.007905] __get_pfnblock_flags_mask+0x6c/0xe0 [ 519.007905] get_pfnblock_migratetype+0xa/0x20 [ 519.007906] __dump_page.cold+0x1c6/0x331 [ 519.007907] ? do_file_open+0xbe/0x150 [ 519.007910] ? stack_depot_save_flags+0x24/0x910 [ 519.007918] ? dump_page+0x1b/0x30 [ 519.007919] dump_page+0x1b/0x30 [ 519.007920] memmap_init_range+0x2f6/0x310 [ 519.007922] move_pfn_range_to_zone+0xee/0x220 [ 519.007924] mhp_init_memmap_on_memory+0x23/0xb0 [ 519.007926] memory_subsys_online+0x122/0x1a0 [ 519.007929] device_online+0x49/0x80 [ 519.007931] state_store+0x8e/0xa0 [ 519.007932] kernfs_fop_write_iter+0x136/0x1f0 [ 519.007935] vfs_write+0x205/0x460 [ 519.007937] ksys_write+0x57/0xd0 [ 519.007938] do_syscall_64+0x106/0x5f0 [ 519.007940] ? irqentry_exit+0x6c/0x520 [ 519.007941] ? exc_page_fault+0x66/0x180 [ 519.007942] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 519.007944] RIP: 0033:0x7fb94ba3473e [ 519.007946] Code: 4d 89 d8 e8 d4 bc 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa [ 519.007946] RSP: 002b:00007fff47c8ddd0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 519.007948] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb94ba3473e [ 519.007948] RDX: 000000000000000f RSI: 00007fb94bc21a3e RDI: 0000000000000004 [ 519.007949] RBP: 00007fff47c8dde0 R08: 0000000000000000 R09: 0000000000000000 [ 519.007949] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff47c8e3f8 [ 519.007950] R13: 0000000000000006 R14: 00007fb94bc67000 R15: 0000000000413d88 [ 519.007951] [ 519.007951] Modules linked in: cxl_test(O) cxl_acpi(O) device_dax(O) fsdev_dax kmem nd_pmem(O) nd_btt(O) cxl_pmu dax_cxl dax_pmem(O) cxl_pci nd_e820 (O) nfit(O) cxl_mock_mem(O) cxl_pmem(O) cxl_mem(O) cxl_port(O) cxl_mock(O) libnvdimm(O) nfit_test_iomap(O) cxl_core(O) fwctl [last unloaded: cxl_acpi(O )] [ 519.007962] ---[ end trace 0000000000000000 ]--- [ 519.007963] RIP: 0010:sprintf+0xc/0x50 [ 519.007964] Code: 24 10 e8 37 f8 ff ff c9 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 48 83 ec 48 48 8d 45 10 <48> 89 54 24 28 48 89 f2 be ff ff ff 7f 48 89 4c 24 30 48 89 e1 48 [ 519.007965] RSP: 0018:ffffc90001767fd0 EFLAGS: 00010282 [ 519.007966] RAX: ffffc90001768028 RBX: ffffc90001768068 RCX: 0000000000001e08 [ 519.007966] RDX: 0000000000000207 RSI: ffffffff82abab1c RDI: ffffc90001768068 [ 519.007967] RBP: ffffc90001768018 R08: 0000000000000000 R09: 0000000000000001 [ 519.007967] R10: ffffc90001768110 R11: 0000000000000002 R12: 0000000000000800 [ 519.007967] R13: ffffc90001768068 R14: 0000000000000000 R15: ffffffff839c71c0 [ 519.007968] FS: 00007fb94b807c80(0000) GS:ffff8880f9e9c000(0000) knlGS:0000000000000000 [ 519.007969] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 519.007969] CR2: ffffc90001767fc8 CR3: 0000000077d2e005 CR4: 0000000000770ef0 [ 519.007971] PKRU: 55555554 [ 519.007972] Kernel panic - not syncing: Fatal exception in interrupt [ 519.008404] Kernel Offset: disabled [ 519.083400] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---