From nobody Sat Oct 4 01:47:33 2025 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (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 D701A2E3B0E; Thu, 21 Aug 2025 09:37:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.177.32 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755769043; cv=fail; b=N0BuEYWqhL5vMoViRSztXHmtfDyDb3bmTb6QrKMh1rm0sHOO1ZhYjmWm9zIb4OdkLfsPQM9oqb2yPgCcxcvOB9HoHZlUYq3Luj0KFaki7JOuPdg7ZqFID61yhRN+Rpc1WTLptQ2a8Kmfs37fEnMlK6cMn8wBypKgKQfzFfGjKxQ= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755769043; c=relaxed/simple; bh=R0stPluiD8Gq5pVWpCKg0VIIBWt09rMc9i2rDDl5s3U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=Qwa8rjAlePMYpUjoQyClu0Mb7QIR8mZGLKPzsvG+YNhWHST/2o3InkJLnYpRb8S8t9Ke08ZNcDj6UHPY6ycXMF5+T4wZXud5bbcqTLhmHZty8KTobiaMoLJYVflc33u6KmHZOxWUAbCVDpCbMoD1IepvM4F/+QwLLR1Bs8v4IB8= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=P0SoNE2G; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=cj3APdqZ; arc=fail smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="P0SoNE2G"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="cj3APdqZ" Received: from pps.filterd (m0246630.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 57L8mUUI023006; Thu, 21 Aug 2025 09:35:57 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2025-04-25; bh=t7C/ZkePXuHaSSRniUQ6zJrNziJVIJoM0SiGk5Oc5p0=; b= P0SoNE2GxH1Xnm54bJlQ8YzJ0rGz5WlqWYBc81uDsIiqm43J5Aq1SnJnUkwse2tj 830+VnUJUTnJldEQb65VzfkWCPxrwVXNMsFAiEF9I6MAZcSyb8uhi2GUHzoZPpDw URTI2Y0BosdnYmizC4qyj1CLbrWAXoQBRtkSM+S4dgRHlBy1xPD/tkHB/9CKePQL 99Rix8/d076USNDOCD0ExtcT4FECaBBSSc5Exy77M7HNC6wioN20hoNQU6z51CCr 5Z32w2XgkKd3fBQa+wCykXizAInW95OH4se5ahJwmp1MENS4A/DbT6fivtnWt/B0 Z3L/PHCUPiANggjYU4i8iw== Received: from iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta02.appoci.oracle.com [147.154.18.20]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 48n0tsu2wt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 21 Aug 2025 09:35:57 +0000 (GMT) Received: from pps.filterd (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 57L8Kavv030293; Thu, 21 Aug 2025 09:35:56 GMT Received: from nam11-bn8-obe.outbound.protection.outlook.com (mail-bn8nam11on2076.outbound.protection.outlook.com [40.107.236.76]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 48my3v5cun-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 21 Aug 2025 09:35:56 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=kIq3a29/hvDvwgAzCg0/XWkggr3gr6hB2jVCY7Hu3++nyAx2OydWvwgv3GINt3NPbzjZ9XHzG5yh8e7EJ2zR6izJxcn1XJREicElYodqM8UzBQ6UIg/Wvgn8X3szKa3aXh2O/xzjllgl9DH3jBAhLJceqrCe47YgiF/o/BLsecOdsiycTcmfxXidEklUq2K3se9v4hurZ2GtK7Eo4AhEa5uQlN/2ono4gHvnJ1QUSOCtFeSBibrFvZ14c/9kTh0wsjETGEkJDTkxAjUBUmwU+9E/LtishjKpiN6HRFrkzI5z7DH1J0Aqv0k9AIcTH9pY+Fr7UG29SsGYppAAmz+MyA== 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=t7C/ZkePXuHaSSRniUQ6zJrNziJVIJoM0SiGk5Oc5p0=; b=CtHGlOD2s3ELKVNd1/+xtmEjhYx4DLCjRpos2JtZIYFlNx3d1snXmUhope2JN6yIYtYsyq5uQIRO1xHDzOFFjC4qMd1nICkc2fhQsliO60f5oHAaNebyHe459bwe/+5mUddssNSnpUAbtwMiZ3rzu8Vk9uLhRcBCxovBP6yDg47kmVzoZ4ssD7YSYYpjZHzY7lcBxd13Vn0Xytit8De2lAIwlsDLLkt4C91NZCIYoPoiogVXhao43bNb3QU0FEDiTBVvw6+boX/TRQDNYMyk2EnsnpvEzXwN+hjMRrask9+TyAvpEPI4FT1U6E8hE/OlQPSY4YVO68H2U7pl3y3Tbw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=t7C/ZkePXuHaSSRniUQ6zJrNziJVIJoM0SiGk5Oc5p0=; b=cj3APdqZvsCdnTlS8yfU8s7p++nkrDmfA7LZnppT80corUN0aiJg0tTtB3kqAUSM3L4hDuCXbbzDEdvIJ24ePwbGnzG268icqppk5PJ+o1Jk2xgp86uyAi2jlHhSW77Ptoo8MJfw1D9U9gVpnKCRLMqDmgN2BBccO5BgdQyBm40= Received: from CH3PR10MB7329.namprd10.prod.outlook.com (2603:10b6:610:12c::16) by LV3PR10MB8203.namprd10.prod.outlook.com (2603:10b6:408:284::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9052.14; Thu, 21 Aug 2025 09:35:54 +0000 Received: from CH3PR10MB7329.namprd10.prod.outlook.com ([fe80::f238:6143:104c:da23]) by CH3PR10MB7329.namprd10.prod.outlook.com ([fe80::f238:6143:104c:da23%7]) with mapi id 15.20.9031.024; Thu, 21 Aug 2025 09:35:53 +0000 From: Harry Yoo To: harry.yoo@oracle.com Cc: Liam.Howlett@oracle.com, akpm@linux-foundation.org, andreyknvl@gmail.com, aneesh.kumar@linux.ibm.com, anshuman.khandual@arm.com, apopple@nvidia.com, ardb@kernel.org, arnd@arndb.de, bp@alien8.de, cl@gentwo.org, dave.hansen@linux.intel.com, david@redhat.com, dennis@kernel.org, dev.jain@arm.com, dvyukov@google.com, glider@google.com, gwan-gyeong.mun@intel.com, hpa@zyccr.com, jane.chu@oracle.com, jgross@suse.de, jhubbard@nvidia.com, joao.m.martins@oracle.com, joro@8bytes.org, kas@kernel.org, kevin.brodsky@arm.com, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, luto@kernel.org, maobibo@loongson.cn, mhocko@suse.com, mingo@redhat.com, osalvador@suse.de, peterx@redhat.com, peterz@infradead.org, rppt@kernel.org, ryabinin.a.a@gmail.com, ryan.roberts@arm.com, stable@vger.kernel.org, surenb@google.com, tglx@linutronix.de, thuth@redhat.com, tj@kernel.org, urezki@gmail.com, vbabka@suse.cz, vincenzo.frascino@arm.com, x86@kernel.org, zhengqi.arch@bytedance.com Subject: [PATCH] mm: fix KASAN build error due to p*d_populate_kernel() Date: Thu, 21 Aug 2025 18:35:42 +0900 Message-ID: <20250821093542.37844-1-harry.yoo@oracle.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250818020206.4517-3-harry.yoo@oracle.com> References: <20250818020206.4517-3-harry.yoo@oracle.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SL2P216CA0185.KORP216.PROD.OUTLOOK.COM (2603:1096:101:1a::9) To CH3PR10MB7329.namprd10.prod.outlook.com (2603:10b6:610:12c::16) 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: CH3PR10MB7329:EE_|LV3PR10MB8203:EE_ X-MS-Office365-Filtering-Correlation-Id: f0023e47-4ccd-4e6d-9ce7-08dde0961f5e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|366016; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?s+PFx4Rh33wEnFVsKbrGzTds2aQbqZ7ZE9TeaKqe4cRbggVAgOuUvFeTwyoV?= =?us-ascii?Q?RWGx47ZPyGXHJhWeDNhI0PyT2Hn/6omue2d79peuFsC0vFeLYrT23EcIgWM+?= =?us-ascii?Q?C1ewXlB25xBH275LaZb17hCtO6zYXFKAW8+SPv5F9bI73jXZB1szWugqBsOI?= =?us-ascii?Q?8ADv7XaLhb5ysoOGjp1ka4pW/GYTui/A1KsU4J1MHlXQZMqVm5T3wkDTbAZI?= =?us-ascii?Q?an9csBjdGYSlS7w2nkzvlLCTbmrpbh4G1vJyqUEs2NbnUEa9I5DHY3vr1okG?= =?us-ascii?Q?b1BWOx6gIAuNV6Fgm3nsg2feIYF5PqQ7leRNyZzIe+0G7eb5tUb0xWgyXO1W?= =?us-ascii?Q?dOe00PGcJz5+biS7bO8j1MoD42uJf1TiUNlh3BxyDpAKfFw2NSsXUpHE5A4k?= =?us-ascii?Q?W9LvIcfvf2i55w2MhuBhKRqoYO6OoWYzDmkRIGX/sReozRiRs+mFaaeAmoBq?= =?us-ascii?Q?hb+So4vQMFMQXeb9IM9SHTg1OkHDCtg+wM8ZltNKqbrtdpCEzNXZAammhOfg?= =?us-ascii?Q?MoLRGhL1A7H+ew/FveOm7fuotYAtkhLmgPgPCQbPI4v6EEbBBMWU6K+jxrr2?= =?us-ascii?Q?OpgkZ701Dth0SQ/Gr8yvw64df0ov10EC+39/sS6zSR9whpUIGvGyfwFQnLTl?= =?us-ascii?Q?AFJShwqBuO4+vv1INt2xONEaipTIevRS+zyrPjr9jsCIly5R6Ns3AREPiy6R?= =?us-ascii?Q?4NjZjXuyRMMUfvON5dBZh221hbP2W/MCvMV2qNwtN3+lxPeyO8iVtcAa6Xxf?= =?us-ascii?Q?mda5ChdLJfu/Fy5vl6dD7Ijh/7vkoAbUA6EHY923W1CUiWblU2V3rFKLvSkc?= =?us-ascii?Q?OlnWLwYSNNZ5SBx/Ik+QrfTY5XfxF2+Zbx9h+eqFS5gvDYuaAGMhfPJhZzOB?= =?us-ascii?Q?/3f/Kl4CElVCou06DcuMqRA9koPHhCBehQggLAxzsItW+lWi9AvBepsEQcEu?= =?us-ascii?Q?PzBF0bjOj6EWOsAe2ADZUH6Ra36V0m6tJyt16i1zn6vgPaswIx86rMlsNr+z?= =?us-ascii?Q?+6BcBFfLdy6PsIdpYKQL5G7LYB/NwejPg7fCSj34bTtqJ9a89E0lbewpafQb?= =?us-ascii?Q?9pQ2w4l/qCVqN5U38Gq3fS43hhFMcxurhNMoIIFbndDuUnHa6vlFCOPQukYt?= =?us-ascii?Q?Reet359taLONfz6VVJLifAwfITxFICCKBLyt7Xl0A14gur7mmfjPCUhtE7Yj?= =?us-ascii?Q?+yZiAmpQRQHpxiLaZlDCoM8YHpW4Hx/tO3IyycvTIEvSKZtd9qXsLJz9iYNH?= =?us-ascii?Q?rpiSaysxHhvvPEzzvc3QmF5A37UlOgIwOzXWFh67mPBU1L2Sl16ED3auWpTm?= =?us-ascii?Q?sGo2fvDA1ToX3KvfU94kF+pk67zDP59IgIs+11a9I5wc4tcS1sXHh/vsz8Ly?= =?us-ascii?Q?ruQf/+wCGrlwYb1G/ZcAFwv7hWaguBsDHIJ41d91E6eYBSiPLeI58QUHtBFU?= =?us-ascii?Q?8cLiMeYwT88=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH3PR10MB7329.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(7416014)(1800799024)(366016);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?4/8kQekAv/ISdzwDyEtu5zxs5mrtg/88pvDibvBU76OOBJBBpZYh3UKRRBRi?= =?us-ascii?Q?sxXwgaOxKmzH49L4UZle0DBp5nPDcdfZLpmcIDRNIUMeASUU/Nu6b2GU00u7?= =?us-ascii?Q?rtFycLTwiAsBOl9ARezcvyougGWHk0xidB/GWOrV4EXZfdqAUeMh/NfS02Y4?= =?us-ascii?Q?HnKNZGHOWJWokloZfnSyvimWtyKIPClpclJfWkeZp/mVPn3rge0id3NigAMk?= =?us-ascii?Q?73hwQ35rf4WDMCd4UHi3eVtW8zc6PNgUtveVoPsaBDipK0xnPatBxAYb3BO2?= =?us-ascii?Q?pElgqcOYfWl/X95Lw74JB1BA9IOIqkZ2X7b3FlWec8sbJVQWiiKBXDRllXPV?= =?us-ascii?Q?gBNtNHc+014vSOl3E9vVvxPSqdO6GoWmA/1+4Z9+a0M5Y15WHD8338PNs9DC?= =?us-ascii?Q?AapKWsZ4hVIczFAE6YWJe91GPAEM1ro62tRj3NDZNhayWhAkzT4Qn54SIp+9?= =?us-ascii?Q?s6xOWM5X3JeHHwo7yyyznw/6CVVfpakS2Dsidb99mLTXQtfR3iwEODntJvzy?= =?us-ascii?Q?S30ciHunw55m492Tc18ZcFPh95VAqzRP6GxZFtt+Y0K8kHqdL1/YGjBVkySr?= =?us-ascii?Q?G4ZmvRCusXVCK227Hy8JwCVDfRVcLBCa7u2yN8YEvOCApGqyY440AsSRrD/S?= =?us-ascii?Q?euqqbhlIrq9T/sdBBkKd0TgT6jqFvguSotGp75g/iIr828RiBJhBPm93oEO/?= =?us-ascii?Q?DDon04JtOeCu1A8EbORhEaALNhx+vc8dxuWaoGn/BviTxxgPfnTTprygEfSs?= =?us-ascii?Q?c/0a7Sq5+tQrO874VJZv0xdGl/HBsKAVEalRP989fEQvNpd9AbS6C4Bd7sLe?= =?us-ascii?Q?X4TrC5EhT+hG8J4Zy+xTzBGVyQHqCQIcnxfBVg7mRJZ+M+9FCHVk+F2x50sc?= =?us-ascii?Q?qcLgeiV4loFQAHfd3rWLbV9PhmacE1Td5M78MoUnfQgsFh/K+3Nnke1M4A4f?= =?us-ascii?Q?OcWE0JhIG6khRP9w09Vvbc23LvuPb0jFkS/gv4UdeaXKWJCim4Ij2VRfE3+5?= =?us-ascii?Q?c5gapCoEqiFZPD+D1FgG6+ajaMa1UcCok5FNDSU3o1o04fBsSEFA8omzkOp9?= =?us-ascii?Q?O0K+5CaM2Bxp/zxmb+VkUeI7Z3zJF0nkMP3Wu2EXNxsTbOA8JPd+iPGwG/IL?= =?us-ascii?Q?zN+XaOorZfeWHUnPDe+oBjAMcMO38crnS47VxzRtgD+DFR1pdLykLA8hMgn1?= =?us-ascii?Q?rXCHzdJD+lPImPb2MgxWHVxlPFi+wNn3QGJIrlfTllCNLyx3ONDjk7QNUqjy?= =?us-ascii?Q?A64qCt6Fo+NJILWjTIUeBF+marVn2u+U3O3ANdQz8SYElMgfupoZAKoMSQ3T?= =?us-ascii?Q?YHPiX07MukrQJFzSJwbLhJ0VykhM0UbJlRdaxUMAnQY67Y/0jtbq4ozFIEcB?= =?us-ascii?Q?vxGRQmP4IK22OHf/MTZi3eQI7kkHSnggPIKmJbfK1BlS6MXbDiSyF7sFtV07?= =?us-ascii?Q?OjfyMc8v1M3vyz2Y9YJ/aZ6zMvSw3Zz+LGnzYrKKPrsU8FJ2goBG2FiAHrvW?= =?us-ascii?Q?OJRS/1fk6ReYwT/OSQiSadwNTjXjDv8ohQLJFXXZrqpFKoGfPfLC6l7fwpjR?= =?us-ascii?Q?SRgx1HBhIQsjaEldx9HNbNIFuwGuLOxnLqbs101z?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: f0023e47-4ccd-4e6d-9ce7-08dde0961f5e X-MS-Exchange-CrossTenant-AuthSource: CH3PR10MB7329.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Aug 2025 09:35:53.6783 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: RZ79UBIHJXOMXf+TSVMDjghZzTu4scIUGUHzPQ2S/fFhTTWNoo0mkI417LqqcRe9EKJyfB3TRCRKCPI/4ZgWeQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR10MB8203 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-21_02,2025-08-20_03,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 phishscore=0 mlxscore=0 adultscore=0 mlxlogscore=999 bulkscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2508110000 definitions=main-2508210075 X-Proofpoint-GUID: KqArVyz6v0zbYgqzAzbEl6HBZBziUhPK X-Authority-Analysis: v=2.4 cv=S6eAAIsP c=1 sm=1 tr=0 ts=68a6e87d b=1 cx=c_pps a=e1sVV491RgrpLwSTMOnk8w==:117 a=e1sVV491RgrpLwSTMOnk8w==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=2OwXVqhp2XgA:10 a=GoEa3M9JfhUA:10 a=VwQbUJbxAAAA:8 a=yPCof4ZbAAAA:8 a=qG1Prv0osz8Essy9glYA:9 cc=ntf awl=host:13600 X-Proofpoint-ORIG-GUID: KqArVyz6v0zbYgqzAzbEl6HBZBziUhPK X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODE5MDE5NyBTYWx0ZWRfX/T2BVpZcBdJd VJ/SnKhNwr8tCnVgatYt1hiwK01nRwxdAXh2oDLPBhiOFV4oseb7MhWKNwQKilSs5AnuwrK6POR vxQ0L3qmaaj2JoCGpQ2xuWDC6JrrBBu3IBSYsP+mo8HLFgTw6jgcnb/4vIBddHwlFnCzUUo65X2 hkV+qBx939nElwHA8i4e9LF+6EZaEvbUvoG4rCtDWUrXk0Le1498XKUU2Q66xuVx+JSGX4M2jc/ XcrHXE+Eh9a90o29vbmxuilpvXRHARBmLYxp6JuHhG4lzr/+/R7iYmhlfqH8v80FUrU18fkYcYa 2KR7A/+KXn4t6R69oxUFhkPwTJ4oqcZCbFALJeTKOSVumihrDagjza0mHmDuQoNHT2Tph+Vy5tA eVO54R6tTErXiUn1TZSpuAkYd4PZUZr1fTqS42Qv7ZL8bt/mC9I= Content-Type: text/plain; charset="utf-8" KASAN unconditionally references kasan_early_shadow_{p4d,pud}. However, these global variables may not exist depending on the number of page table levels. For example, if CONFIG_PGTABLE_LEVELS=3D3, both variables do not exist. Although KASAN may refernce non-existent variables, it didn't break builds because calls to {pgd,p4d}_populate() are optimized away at compile time. However, {pgd,p4d}_populate_kernel() is defined as a function regardless of the number of page table levels, so the compiler may not optimize them away. In this case, the following linker error occurs: ld.lld: error: undefined symbol: kasan_early_shadow_p4d >>> referenced by init.c:260 (/home/hyeyoo/mm-new/mm/kasan/init.c:260) >>> mm/kasan/init.o:(kasan_populate_early_shadow) in archive = vmlinux.a >>> referenced by init.c:260 (/home/hyeyoo/mm-new/mm/kasan/init.c:260) >>> mm/kasan/init.o:(kasan_populate_early_shadow) in archive = vmlinux.a >>> did you mean: kasan_early_shadow_pmd >>> defined in: vmlinux.a(mm/kasan/init.o) ld.lld: error: undefined symbol: kasan_early_shadow_pud >>> referenced by init.c:263 (/home/hyeyoo/mm-new/mm/kasan/init.c:263) >>> mm/kasan/init.o:(kasan_populate_early_shadow) in archive = vmlinux.a >>> referenced by init.c:263 (/home/hyeyoo/mm-new/mm/kasan/init.c:263) >>> mm/kasan/init.o:(kasan_populate_early_shadow) in archive = vmlinux.a >>> referenced by init.c:200 (/home/hyeyoo/mm-new/mm/kasan/init.c:200) >>> mm/kasan/init.o:(zero_p4d_populate) in archive vmlinux.a >>> referenced 1 more times Therefore, to allow calls to {pgd,p4d}_populate_kernel() to be optimized out at compile time, define {pgd,p4d}_populate_kernel() as macros. This way, when pgd_populate() or p4d_populate() are simply empty macros, the corresponding *_populate_kernel() functions can also be optimized away. Signed-off-by: Harry Yoo Reviewed-by: Lorenzo Stoakes --- While the description is quite verbose, it is intended to be fold-merged into patch [1] of the page table sync series V5. [1] https://lore.kernel.org/linux-mm/20250818020206.4517-3-harry.yoo@oracle= .com/ include/linux/pgalloc.h | 26 ++++++++++++-------------- 1 file changed, 12 insertions(+), 14 deletions(-) diff --git a/include/linux/pgalloc.h b/include/linux/pgalloc.h index 290ab864320f..8812f842978f 100644 --- a/include/linux/pgalloc.h +++ b/include/linux/pgalloc.h @@ -5,20 +5,18 @@ #include #include =20 -static inline void pgd_populate_kernel(unsigned long addr, pgd_t *pgd, - p4d_t *p4d) -{ - pgd_populate(&init_mm, pgd, p4d); - if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_PGD_MODIFIED) - arch_sync_kernel_mappings(addr, addr); -} +#define pgd_populate_kernel(addr, pgd, p4d) \ + do { \ + pgd_populate(&init_mm, pgd, p4d); \ + if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_PGD_MODIFIED) \ + arch_sync_kernel_mappings(addr, addr); \ + } while (0) =20 -static inline void p4d_populate_kernel(unsigned long addr, p4d_t *p4d, - pud_t *pud) -{ - p4d_populate(&init_mm, p4d, pud); - if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_P4D_MODIFIED) - arch_sync_kernel_mappings(addr, addr); -} +#define p4d_populate_kernel(addr, p4d, pud) \ + do { \ + p4d_populate(&init_mm, p4d, pud); \ + if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_P4D_MODIFIED) \ + arch_sync_kernel_mappings(addr, addr); \ + } while (0) =20 #endif /* _LINUX_PGALLOC_H */ --=20 2.43.0