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 127F0193435 for ; Mon, 9 Dec 2024 04:59:28 +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=1733720371; cv=fail; b=kOJmXFVwE3pkhaAMIRkjaTPuYBFkPszTN+CZsHGgCG2+qcCl7e/6fG3QchxbQ8W0kCLR7quBGNBeVEeK3SKyZ6B8CZqlgia8yMd+V4Xla+MKKQ21UjNPF4LEhWAV65sTaXfxRrWo28FgoaZolqeJrXrnQfOogDPEBVMXB9IGfy0= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733720371; c=relaxed/simple; bh=CiTv/AALIV66QZoQek0LVJwjIcwQOE1e0pTTHhvTUpU=; h=Date:From:To:CC:Subject:Message-ID:References:Content-Type: Content-Disposition:In-Reply-To:MIME-Version; b=QeYGsB3bMPAnNNSVyEz5w/U6GPnhthtjSI5jwVCtCoDFGyDSc3GbZnhi0FrNVwhVU4eBpIxOC/GUjh5931g0EU6RRA3jlJkh6MyltGSz6zwTR2JTr6MRdiAjZwl5rDB6iECS/0nAcjnXRshqeB9H44o7pCntQSi4WkbWWYDQrt8= 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=cIqe91DP; 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="cIqe91DP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1733720370; x=1765256370; h=date:from:to:cc:subject:message-id:references: content-transfer-encoding:in-reply-to:mime-version; bh=CiTv/AALIV66QZoQek0LVJwjIcwQOE1e0pTTHhvTUpU=; b=cIqe91DPfwV9FJIWNx9DCid4xY304vNqd9Hsh5yUFo0IWboX9l+XVote eYIw3vx1HZqj0xNgQZmbzuTZoiLGTasIa1kQdAeAaq0QisJtcX6R4+il2 EWB2+pepl7gpzcpiHOIG0o8goiIgK/QG0cN/q0hng5/hIo1hsTrgEfrlz 89EUfj+X4cccKGXcnrEnbFqzpb1QiyJ5p4RMQSi6IeUXxB6MJ3csZfHuV PuWFgn7bF1QPAsQaBv/ivkOvovmGDhatylfKygyesklwZzXvdbE3x+Ekz 8JxzOYG5kDl5BowEbYzI5ip1tYagRi+BUY2VJmcZWYWszZh/wXdG6VObo A==; X-CSE-ConnectionGUID: ImolCp0VT8aXvwEs64Dzpw== X-CSE-MsgGUID: uE5YR1fuTiWA4Nm1W3I1AQ== X-IronPort-AV: E=McAfee;i="6700,10204,11280"; a="34061064" X-IronPort-AV: E=Sophos;i="6.12,218,1728975600"; d="scan'208";a="34061064" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2024 20:59:29 -0800 X-CSE-ConnectionGUID: rTL1Q26fRTKbt1CqYOnulg== X-CSE-MsgGUID: OpqwcYrvT3qFnF7WH2hdWg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,218,1728975600"; d="scan'208";a="99014325" Received: from orsmsx603.amr.corp.intel.com ([10.22.229.16]) by fmviesa003.fm.intel.com with ESMTP/TLS/AES256-GCM-SHA384; 08 Dec 2024 20:59:27 -0800 Received: from orsmsx601.amr.corp.intel.com (10.22.229.14) by ORSMSX603.amr.corp.intel.com (10.22.229.16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Sun, 8 Dec 2024 20:59:27 -0800 Received: from orsedg603.ED.cps.intel.com (10.7.248.4) by orsmsx601.amr.corp.intel.com (10.22.229.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39 via Frontend Transport; Sun, 8 Dec 2024 20:59:27 -0800 Received: from NAM12-DM6-obe.outbound.protection.outlook.com (104.47.59.173) by edgegateway.intel.com (134.134.137.100) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Sun, 8 Dec 2024 20:59:26 -0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=U6n6MvFYBm2PADHENZ+1fDWlLrj7y/n8IoPtJKI1FyWBDOJ1LNj4EwZHwjUuTAMLwtcQShlYa1KYasvYCKhikH48FiTJEOcFeOfUhSyIPd1wLPINsTZwpYfJziJSoBKvG85v++tv2g3ptSth7Y/IbzvTUVtEbpQHtmxtw3aDPopstE4HJa9itT7ZGjXdE4KvJUxRDwcHI04sGFNHb9P0sD6DvVJN0bwNVNmjo0t8cR7kBjlLtpSJ+v2jl0jpFuEq3ETwocJwF5ukKjtsO/AVN6mgs7s2UQf22hErYfusEsHRzu9a0I/Fxc9ngP/iz5LSyVKVNS/7T+eCWY0+EVtaJg== 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=k5YkC//5aD8UOrBXj0QV4RKwFTXnGFge1N+uKKsV3Eo=; b=xcoJyakFFiSZpfgbc35iItV1T0a08771Uh4xTfubGgaCMu0jku+ECivnlgWNSQ+47UXjbsiFRA/P+48pILyt06NWQVKzkqJfMaQU37nJIXjUea9EPNePzx/G9fuiyTpW9z+LItFn2bMMTmfYvS5+YGSZlFNxgW0KWCSWEQKA8PgdJAWr0aS9PGGa+JOlbU1o+yLDH4EG5Mc9TSdFcC9zFnlmTEQHz+rLkdvDUUHbWgnaCgaqYEVRk34Lvt9ccwcyjin/FuOvB6lumMxR7iahfHE6YnX0eY6YDSGcph/gVtJEKIs9BjDHXX25RSHqa2QbuZSxxYcKRaUZ5xxgEuKmFA== 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 LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) by PH8PR11MB8064.namprd11.prod.outlook.com (2603:10b6:510:253::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8230.11; Mon, 9 Dec 2024 04:59:17 +0000 Received: from LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c]) by LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c%6]) with mapi id 15.20.8230.010; Mon, 9 Dec 2024 04:59:17 +0000 Date: Mon, 9 Dec 2024 12:59:01 +0800 From: Oliver Sang To: Suren Baghdasaryan CC: , , Andrew Morton , Christian Brauner , "David Hildenbrand" , David Howells , Davidlohr Bueso , Hillf Danton , "Hugh Dickins" , Jann Horn , Johannes Weiner , Jonathan Corbet , "Liam R. Howlett" , Lorenzo Stoakes , Mateusz Guzik , Matthew Wilcox , "Mel Gorman" , Michal Hocko , "Minchan Kim" , Oleg Nesterov , Pasha Tatashin , "Paul E. McKenney" , "Peter Xu" , Peter Zijlstra , Shakeel Butt , Sourav Panda , "Vlastimil Babka" , Wei Yang , , , Subject: Re: [akpm-mm:mm-unstable] [mm] 85ad413389: BUG:kernel_NULL_pointer_dereference,address Message-ID: References: <202412082208.db1fb2c9-lkp@intel.com> Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-ClientProxiedBy: SG2PR06CA0235.apcprd06.prod.outlook.com (2603:1096:4:ac::19) To LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR11MB8603:EE_|PH8PR11MB8064:EE_ X-MS-Office365-Filtering-Correlation-Id: f3a1bbfd-fcea-40c2-3e7b-08dd180e3c07 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|366016; X-Microsoft-Antispam-Message-Info: =?utf-8?B?c1pSTmgwcHcrdERvcVFqR1AwRmppWjBtY3RHTFVKaVlJRkZUMVQxcjc1aE5B?= =?utf-8?B?d3BVMGQyN1MrZm5za1N6TUJrOWZIeFF6am1Ha09GaDhYa2k3UG9La2w1WFlE?= =?utf-8?B?eUNLdkpqNFJ0NFA5d3F6eEFlcHA0OUZhVE8zdWtROVB3aEI4MVlBQ0tWdFN6?= =?utf-8?B?TlFtVGZCU2M1V1lYdXFYLy9LaHdnWktLQ1JaSnhiTmtjd0dqOCtLTkIzR25y?= =?utf-8?B?RFU5TWdwRFZzcmNHdkc5ZCt3TnUvSjF1TUJGanJIWTNKaDUxaEorTVFKZjdN?= =?utf-8?B?S0lQY0NFZEFFOEoyaXRmd2I1M044L1prV2pqWHl2cm85emo4eVhzZFBKU0Nw?= =?utf-8?B?c3RrZng4bldMQU4yTFZ5MTlMUVNGanh0L0FKK1pSTG5jZzg1MTZMQWlZQUJl?= =?utf-8?B?Kysxa2ZuOUMrckpMY1BYRUprN25pN1lvS0RXLzdlMUV2d2xOSGh6eGZtcVNW?= =?utf-8?B?SUp3ZUVlZVo5UXFjM0FaVVd5UjZyUld4N1h2N2Q4bVRZeUFiQnVuT1Rvb2tB?= =?utf-8?B?Q2R5YjY2OTRhRnd0T1M4Yk9zeTd1OXFnSUttMnFyb3BKWUwvRXhHenNsUGpu?= =?utf-8?B?RktZeDJGTmlja1N2aHI0a09VNjFLUko2SDc5QVNRWmM1ZVdLdENJTjYzblVm?= =?utf-8?B?MFc5cHVBUFBSWDRaRVlFZXA5NmNCRUd0d1NlQmJUaHd4N2o3WlZucUZHdkpS?= =?utf-8?B?L002aFh6aTc5NGI1cUVPQy9xNFlrazl2OVFsSUJHSXRpTWNqenFSeGY5MVNZ?= =?utf-8?B?UUJJR0JlUy8ydmU1VXRvUjZFMUxRWVlUMlB1aXVPSVRnRFRBNWFyMnViNGtT?= =?utf-8?B?cGpUM1dQblVkaFNJcDZrbXN5RktBQlYzZ1JPUGg3UzhsVFpkc3U3UEo5a0Z5?= =?utf-8?B?MGxOaWtoRWRiZDhNM2ZSUlhEM3FhTE94d3Q5YjhNdm9KUlRFT0pHWjZIN2dO?= =?utf-8?B?aU92WWUwbkNaUzFPZFUzMWNkZmYvY0szMllNcFArK013NFRLdzJjL0tKNEUy?= =?utf-8?B?Z0J0NFFvZjdTU0F6WDg1UERLTEZvdjRXWmxOaUc3OG5zVUl2YVU3dHZTUTIy?= =?utf-8?B?Uyt2R0k4RU9OU1Q5MC8vSCtFZGxiUmRTM2liekhPVlRKS3JxMlZBSnRuWTR2?= =?utf-8?B?SVpYZnYyeHN0RUtFR2h3T0Q1b05waERrQWdibkNBZUt1SkpCU3UzWUhidERI?= =?utf-8?B?RDN0WWdSeTNFMjY2eTBxbTU1Z1RMVHZCZEVxTExlNUJTZWh4QTZ1aTR0VDBR?= =?utf-8?B?Zi85MlVEUHlFRExoNFgyZEZkTldQMmtoRmc0a0JzWDNIeFhLcnhYSmw1anRm?= =?utf-8?B?Yjl1RldIc0tnYU5yRkwwZURoNy94YkJBbXNEVG8zdStTMkt0MzE5S1B0VG5n?= =?utf-8?B?TEhTN1hTV0kzcjBpdUtmV1VQZ1QzM3pXUjVwbE1LMm5xV2ZMQU44L3JjWjUy?= =?utf-8?B?eURYSzNDMVoySTdteCtCaVFTY2llR3NpckZwUjRCUk45dVhSTE5hMTg1b2R5?= =?utf-8?B?VTNsYndoZ1NDRFgyTDg4Zm9FZ0hsdzNYYXlLSm1LdVNzTy8zcnNlc1lzYlMx?= =?utf-8?B?S2dudWVUZVNXc2RLcjhoaTZRTDU0aDJ5Mmp2eVRjc1BvY0RnaUhYbSthaU10?= =?utf-8?B?VGpCMmdtZ0o0K1kyYlE5VEJTQ1RyWHJwZGVtbjRzenVNYi9aREM0U3lSYVd1?= =?utf-8?B?dUhqYmYyeVVNVFhkKys4QktBVE90SzNLNjJtbkhKVGxZVWN0bm1WNnRwMlJi?= =?utf-8?B?Tks3RXQrNUwwM2ZOemZ4Z2lsRDUvVk5sVjRDWjNwUkl3Ry9XajlRNUNHMGFJ?= =?utf-8?Q?hc0DZHuQpseZXamFpLQsLhMku0W+ffTku2L7o=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV3PR11MB8603.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(376014)(1800799024)(366016);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?NVJWYzlrRTBFbFB6THhHSDluNncwMkpRWGRPVWx2bXVSNnpvV3BidHl1N0Uz?= =?utf-8?B?OG9ueHFJTW1YdW5iTlV3aDhDUW9oM21BVk05TzBNVmk3aWltaHlqTUcyK1lR?= =?utf-8?B?SXAyM01Qai94MWRTNWI0WDVnNjNMYXpMZXFCMFp4dmkrZW1Tc2ZGZEliN3Nj?= =?utf-8?B?MllwQWdJeFA1bW1YZ2tVZnpKVWUwMnhsd09OYlFHNDVUQ1FaQzJYYXRvcUZy?= =?utf-8?B?SGFEOEpYV0k2S0RYbmdmVlFuVlUzWkdTN21HN0RoYXlRQVRWTFc0SEduUHpp?= =?utf-8?B?cVhOdkxpdFp4cHZ6NTZHL056dFpLaUUzemdzaUJ1eDdjQnJjd3dJY24xc2k3?= =?utf-8?B?OXZBWkQvK0JoN29RdWpQMGFwd3Z5UkV6WmJPRkQ0MS9hYVBjNVEvT1JjNFhW?= =?utf-8?B?RkwvQnVEUVlxTGxicGV2aFo2TkJKNWwxcEhVeEtkcXVBTG5mMFV4NWdaTkdl?= =?utf-8?B?OVNEcm9tOVJzaDVhemsyU2ZzaXVWM2tkZ1RxRWhQVjFJdDB0NFErd1BDYmxy?= =?utf-8?B?ZHBZZTA3MHAwNlBqaks4MG84b1dEWmJFZC9WRkJkUVlNZnVvMzNDSWhOTU1u?= =?utf-8?B?TXNrSWtQeEdVRDk3ZGcrdHpoL0dpQ0VoazlRbGc2TDZudWtEQXN6RjYxR3NL?= =?utf-8?B?UFFheEU3RXphNS90Vk1LZHNWVkl4UWhaMXhMdm5RZW9vaWwxRVBPRlRMUzhl?= =?utf-8?B?L3lvWGp1SDMzWFM1ZzNQQ0V3NGg0WlFtWkhDTTZIYUswS25QNXRIYThBTmpr?= =?utf-8?B?VCtkZjlqMUtGRS9POWNzck8rQ1ByUmNJb013eXlhTnc0RnMvVU1NcmwyaURW?= =?utf-8?B?a0gzS2hqN1NRRlc3cERFOW4vdHdyd3h2czQzMWhPSnZ5NnpMaHhNd2oyVXlT?= =?utf-8?B?bGh0Z0dMSzlIQlphdkpCUXU4cHQ2NytXeGQrUk5ZRUN2ZTAvK2dDR0E0anV5?= =?utf-8?B?ekdwYkNZNFpjVGY4cFpjRHZudFUyRUR0ZkJhSE9ocnM4NWRZWGpCS1U2VFJQ?= =?utf-8?B?VE42MlhvbitKY3ptVDhQZVJicWE0UXd0VUIrS3kxRDRtZVFpR2xETWcrNWR4?= =?utf-8?B?dW9VWVFJMDNCNytVNWtBL2Y3UDFxUSs3UFpLZCszYTdNejgreFN4Yi9oam02?= =?utf-8?B?dDBHeXZkWVBZZjVCSHhOdk1vNzdMOStWaDRMNnk3SzFBYk0xMStDVUxiSkVt?= =?utf-8?B?Q041SUd0WG53UXRIeFZuODFPL0FMaWZCSzdDOHNINGlidHBORExtQ1ZpTE10?= =?utf-8?B?U2p3TTNZc09IZDlqZDhQWitDTkRMTzFPc0tZSTZzRWFYb2dOZHd2UnVrMmpi?= =?utf-8?B?Vy9JejVqRkI4YW53N3ZZSHN3MWw0SEI1TWkvQ3RaaXluZjFIUnphL1ZQaXFi?= =?utf-8?B?MzEyVW4vc1p2MnNlUEVROFhkQzkxQ3RycTVzRVB0SjkwOForRmFLTFBiWFo3?= =?utf-8?B?OXhkWWt3QU9xYTd5eDl3QTNKeHVMb1VyZjQ0Qjk1ckx1MUtDRlBLTTJaS2tj?= =?utf-8?B?WnB1R3VySkM2SzhIdjdTVmJWNnp0eDg1ZHdyVTRaR0F6T3BUYmpKSzYvTjNv?= =?utf-8?B?d093Tm43NFF2Tld4L2lZT3JVWXVzdThncTB5NUZBckwyVFlnZDJBV3dHTVZE?= =?utf-8?B?ZXpXbCs1d2dRcVQyTzhaUVFKMGZxdlJCTXpueE52a29MdUtxMGhtT2RRQTNx?= =?utf-8?B?UWxwc1JlcncycWhlVnhHUlJjMHkwdThIL1h0Ni81VzNHdnRNVmpoeDc4U2lK?= =?utf-8?B?N1hBeTJob3pEL0I0czZKQXpVMnNPYUgybEhJNG9SYVBVTzhhR29aWlZpRjI2?= =?utf-8?B?bUpXT2lIanBSOTVUcWowUHN4U3VkMUhWd1k3OVZQMVZ4ZmVLdGhiRVpBVDlU?= =?utf-8?B?YnNJVUZwRnhPanNVcXZmNTdpeGtrSGd2UGZTZVlvVjgxK2lidmxtbVF1UUU5?= =?utf-8?B?UGhYZVF6VjRYZllXQ0NBYmxlc2N0MnBkRzJHcnhsRHpubzVrMVo3czV3WXZK?= =?utf-8?B?N1I3M0MyOFdsMjFNOHpmcEJSdXB1VmlmcmRrSHBYRXVyTGcyNmNSMjZCQ0sr?= =?utf-8?B?SkhKb1pwREJPVXREdTdDS2VVOEJNOXBJcld2aElidGdWb0RjQ3hzYWh4T1Jx?= =?utf-8?B?dThPZDcxdkREYmxvOEZFcDN5L3BBdDNKMWpUZUgzNnFaUVZONFBZS2NiNytH?= =?utf-8?B?Y2c9PQ==?= X-MS-Exchange-CrossTenant-Network-Message-Id: f3a1bbfd-fcea-40c2-3e7b-08dd180e3c07 X-MS-Exchange-CrossTenant-AuthSource: LV3PR11MB8603.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Dec 2024 04:59:17.3335 (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: 1pl7PY9PlCllVwL1Ip1Puo4gpx3zV6feWDmK09yNr+OvZ9AotkqZdQuqSawW6LE3h4OBDKSUI+OLCZtbsjZXyA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR11MB8064 X-OriginatorOrg: intel.com hi, Suren Baghdasaryan, On Sun, Dec 08, 2024 at 06:09:05PM -0800, Suren Baghdasaryan wrote: > On Sun, Dec 8, 2024 at 7:26 AM kernel test robot wrote: > > > > > > > > Hello, > > > > kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on: > > > > commit: 85ad413389aec04cfaaba043caa8128b76c6e491 ("mm: make vma cache SLAB_TYPESAFE_BY_RCU") > > https://git.kernel.org/cgit/linux/kernel/git/akpm/mm.git mm-unstable > > > > in testcase: boot > > > > config: i386-randconfig-141-20241208 > > compiler: gcc-11 > > test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G > > > > (please refer to attached dmesg/kmsg for entire log/backtrace) > > > > > > +------------------------------------------------+------------+------------+ > > | | 98d5eefb97 | 85ad413389 | > > +------------------------------------------------+------------+------------+ > > | BUG:kernel_NULL_pointer_dereference,address | 0 | 12 | > > | Oops | 0 | 12 | > > | EIP:lock_anon_vma_root | 0 | 12 | > > | Kernel_panic-not_syncing:Fatal_exception | 0 | 12 | > > +------------------------------------------------+------------+------------+ > > > > > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > > the same patch/commit), kindly add following tags > > | Reported-by: kernel test robot > > | Closes: https://lore.kernel.org/oe-lkp/202412082208.db1fb2c9-lkp@intel.com > > Thanks for the report! > It looks like anon_vma passed to lock_anon_vma_root() is NULL but it's > not obvious to me why my patch would cause that. > > Oliver, how can I reproduce this locally? > To reproduce: # build kernel cd linux cp config-6.13.0-rc1-00162-g85ad413389ae .config make -j$(nproc) HOSTCC=gcc-11 CC=gcc-11 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules make -j$(nproc) HOSTCC=gcc-11 CC=gcc-11 ARCH=i386 INSTALL_MOD_PATH= modules_install cd find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k -m modules.cgz job-script # job-script is attached in this email # if come across any failure that blocks the test, # please remove ~/.lkp and /lkp dir to run from a clean state. config and job-script files are attached in original report. one thing we want to mention is this seems only reproducible with i386 config in our tests.