From nobody Mon Feb 9 03:32:53 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 675BDC3DA7A for ; Thu, 5 Jan 2023 19:16:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235460AbjAETQU (ORCPT ); Thu, 5 Jan 2023 14:16:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234959AbjAETQG (ORCPT ); Thu, 5 Jan 2023 14:16:06 -0500 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C98DC7E for ; Thu, 5 Jan 2023 11:16:04 -0800 (PST) Received: from pps.filterd (m0333521.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 305ITxBH029125; Thu, 5 Jan 2023 19:15:55 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : content-transfer-encoding : mime-version; s=corp-2022-7-12; bh=+7lb3T9LpYIF6+7aVeQjtMBFxEGRNgAAXhAWR5tPalk=; b=RyLxX5L466s4dDfqEaTsCMJiOHA4z4YLZ7B2PwG6UInejebP5G7p/EqLHGXu/LbAseYh kLNHbVVcQ0U9mctWiQXaNi01/4Ls7hRLlUrRPJziH9ebzAYIB1hl5Dv2SiuU4rKhAXEF dHNmgEG3exYdSx7eqANw6McbmUbBItuELx2F3pMYUyMYd6LPy7BlMnIdNR4KSgzvtHWP yngigmBXj23k5cXor4ooCv6MZRjZVhQTRByKPThQ19lHWvuRxVMT4hq//Pq5gGXfsZwl qiK2nSCu1vJn+WfSn/otmN9ISXQtC540mJgifvfpM2vNfZwSpAonXdnsqKU1dT2jWwV0 IQ== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3mtc0asrk8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 05 Jan 2023 19:15:55 +0000 Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.5/8.17.1.5) with ESMTP id 305I0WPE023380; Thu, 5 Jan 2023 19:15:54 GMT Received: from nam12-dm6-obe.outbound.protection.outlook.com (mail-dm6nam12lp2171.outbound.protection.outlook.com [104.47.59.171]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3mwept6kx6-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 05 Jan 2023 19:15:54 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=elAqGtikCt10XY8Yv0Qy5uZSt0dSYMy2bJP+Yt8uap9AuzBJ5JZVcCkJWNrOtv3QLrQ+jCurMYmMZSf8ZW1EHZQvHiKeRKxSN7AGE0zwtQm8Y8YDZ1YZy85baOtjFTbfLd6WuffV6mT4aNXiAAXLYEfq0ByttACHgR8lZEYwM02IUlHQPHmYd85j3J4olS+kSvhaLF5Q21w9xMJyXqfwgpQnx4kB7U+5/eoeiixME4pIj6CwZY2M7xOhfjzqG8om3oiWOOf5BOwJ2sSTLAQ1i69TvL5yMYClPHkrbuT2x35txYBljZrZ6V+xcXhQri8ku08DKFX6zK9oOtvwLZ0Y2A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; 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=+7lb3T9LpYIF6+7aVeQjtMBFxEGRNgAAXhAWR5tPalk=; b=iI6aQNTxa4nbbtvh0bvA9ktOcTsCt3a5+iPvgBMmTPbid6VVzoibhWMPr3/S/QApbHrXRRL0EI/CrIzkkNIdbQMAqWDK4UhwQbSRBrOBuRjbQ5U+uFGY7UcBtgoLAR+xnqjaY4x8QN/uDfrby/jmZ19wlI2FsJSUT2X9ueueNFsZCa9q4C2fSDoSPkRUoxFmIu0JKSC86iJeFyblM+XfdMxADSi2N7XtYbgE8PTUcvkcRQuLKbUr2+BBBQWbrPKIDqZgg+mDJ19YGjYTYPpZi4x/wKpfZ/h1Y8lqzExvDaqspJwkLjMafnEvQnW3dsf3GvX157dKOqj+qI1dmwYSnQ== 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=+7lb3T9LpYIF6+7aVeQjtMBFxEGRNgAAXhAWR5tPalk=; b=KVBn2ygjACpRNE+WRLWyURGBDSjNdW/kKDOKGNKgAxYeHTXgJVUf2MY//l0gnWQd/wQqWh/pUWOWS01rHT1FoFz7MRuRuxrXBrgVgZ2SSblCeEe4bvo7UwbMinDpBkKJl7759GC2pigWT2Kudhd+TgUL5XcCzITy8474uDBUCJ0= Received: from SN6PR10MB3022.namprd10.prod.outlook.com (2603:10b6:805:d8::25) by DS7PR10MB5231.namprd10.prod.outlook.com (2603:10b6:5:3b1::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5944.19; Thu, 5 Jan 2023 19:15:53 +0000 Received: from SN6PR10MB3022.namprd10.prod.outlook.com ([fe80::a02:2ac8:ee3e:682]) by SN6PR10MB3022.namprd10.prod.outlook.com ([fe80::a02:2ac8:ee3e:682%4]) with mapi id 15.20.5944.019; Thu, 5 Jan 2023 19:15:53 +0000 From: Liam Howlett To: "maple-tree@lists.infradead.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Andrew Morton CC: Liam Howlett , Liam Howlett Subject: [PATCH v2 02/44] maple_tree: Fix potential rcu issue Thread-Topic: [PATCH v2 02/44] maple_tree: Fix potential rcu issue Thread-Index: AQHZITogJrlnYJCl9E+hGSmbaSft6Q== Date: Thu, 5 Jan 2023 19:15:52 +0000 Message-ID: <20230105191517.3099082-3-Liam.Howlett@oracle.com> References: <20230105191517.3099082-1-Liam.Howlett@oracle.com> In-Reply-To: <20230105191517.3099082-1-Liam.Howlett@oracle.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.35.1 x-ms-publictraffictype: Email x-ms-traffictypediagnostic: SN6PR10MB3022:EE_|DS7PR10MB5231:EE_ x-ms-office365-filtering-correlation-id: 216d829d-47f0-4f61-5991-08daef514397 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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:SN6PR10MB3022.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(396003)(366004)(39860400002)(136003)(346002)(376002)(451199015)(110136005)(316002)(54906003)(6486002)(186003)(26005)(71200400001)(107886003)(91956017)(64756008)(66446008)(2616005)(6506007)(4326008)(66476007)(76116006)(478600001)(41300700001)(44832011)(4744005)(8936002)(83380400001)(5660300002)(66556008)(66946007)(6512007)(2906002)(8676002)(38100700002)(1076003)(122000001)(38070700005)(86362001)(36756003);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?iso-8859-1?Q?9UtCuNq72vsdCbxB5MXttY09lA7hh0mO9Hex7J/iVOnwVkW5jHmj61hfbj?= =?iso-8859-1?Q?orctbcGgcrqlxtS4WYmDXuB+xmS2DDvuwRK0iniPyLyvTMQJgCzOKgZePg?= =?iso-8859-1?Q?cMD9gq25oUV5u/1H4g7fyDPbGdlAyaHY0NJRsjtSjaxPckSwvyVvXchduz?= =?iso-8859-1?Q?22EobG+ubUicEY4mmBfqMnvsDRpbgxRU8NW7sVj52YbOhCELiPGdyYn9Eb?= =?iso-8859-1?Q?8uy2FJt+Ix4E/U/w+I8CNn6ExOQmTmWsuMVGAZ8w9q96PzaXAegxsfpeKf?= =?iso-8859-1?Q?wNemDa1OYs9Cj1nuAOO2wFkr3VRWqmKAaJr3LP0X9G+PMWKIntYWGOnliC?= =?iso-8859-1?Q?gC6dS8MBr08hA/W6l1rVI7vM96tfsEgtCjsd14hdlmaNEHaYZMxaKNJHJ/?= =?iso-8859-1?Q?xGU+vZctFVd7B7F+NcPkPCNf0qfGmO6dlydVH7jUzB0mdpCRpMsNhG2k+r?= =?iso-8859-1?Q?TxcZkI8GUnCOLl5LJRwvu2I4FkjX8+AcPURfgu4I8amKjL0qClYUpLm/Q/?= =?iso-8859-1?Q?MJlcDDSusL3Y/QfybBx1ZYjbA5zV5Ll7E/0gFAaEUiort8TRtVHMHb3QTK?= =?iso-8859-1?Q?pwiThtumymEAIRBBUWBgWZCLSp6kn9x4Av3N0k1hAfHsdySdZwbVKH3l5P?= =?iso-8859-1?Q?BbcyncfKOw1bNZrS8UUuLNlYaACcFoXl8srGty2Zq7KDn7vDL5H2Tez7Yo?= =?iso-8859-1?Q?dBmlWJqhvz0rudRws3FnYFflw5z6/JIbolxQVeJViaVIE9DymW5zP0xOAb?= =?iso-8859-1?Q?+U1u/lsrqeNc/3hSGRMjmApmLzOmsQ92R2ZoA1/sdan5jOOoaleo4CrPgg?= =?iso-8859-1?Q?mzibNIOlqffFRtNuq8xsag2/+YHMdP4u8ZuxVyyORzZh/z9xemlJ89aFUl?= =?iso-8859-1?Q?k1zdshvjKLO/d022MfCBgEoiv6HedqEr/nzToaDW6brMeMTmZrziAvNtGA?= =?iso-8859-1?Q?coZiqZX4LjCY1Nm/zzCPr/UpIjRQdqA3bCCpeLeaYzv0AFIYC414AbW1+3?= =?iso-8859-1?Q?SwCTaM/1XkqzrdexmBfv9VzN3Ah28zIY2ztlSA5mSEkp22Ve8kF8y6xSih?= =?iso-8859-1?Q?Sv5uVpkRjjEZEsmTpCw4UcWcTVp0bsBEDLXZBSB55dCma5KNoEYCMaxnwl?= =?iso-8859-1?Q?Be2dMQA/gRsVndlbHYtsYG/jtxoFNEm/lRQnREcA0xTLReTMpzSjX9ae0z?= =?iso-8859-1?Q?x4M1UGFcbrhb/iwiWm5+EME9W+JcTZDcXWbj5EkzGbnwtDG7cAugCBlmcC?= =?iso-8859-1?Q?hA4nGqo8x1kBe69i17uflwwFsGTHefxiqu8XocHh3VfwqFWL2fPVOAPF0E?= =?iso-8859-1?Q?ijC4cxBhuk87uPiNSfCMP5cMxbBKUWOcMThDWU4cKxs26hSOLu7LSUhQhr?= =?iso-8859-1?Q?QslZ2ERmrfjdAUX3tHKpJuU49nl2g3/CdYoYfdynGKY6h2mFF0YVQf2bN4?= =?iso-8859-1?Q?2NqCXuOi6BtXsuTUcyXJAlLPVhfkOL65jQMDHqpr9iJnStWFgwkBeq4+TU?= =?iso-8859-1?Q?BIiwoF17wdLIUq3JAhg8cg9OXoec/ACG6kYh8+9tm32ZFGX9EZSlSy+WP0?= =?iso-8859-1?Q?naofQT8M17zeAhcqkNPf9uXeeiDZ5m6WJqEwD9QyocyM1gpWZ3SlK9aExv?= =?iso-8859-1?Q?6TYVD4NbvTfbvqqwSLPqhuMCXdWhrt5c+1hsQqZZL7sXlv5VfULlmRow?= =?iso-8859-1?Q?=3D=3D?= Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 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-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SN6PR10MB3022.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 216d829d-47f0-4f61-5991-08daef514397 X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Jan 2023 19:15:52.9697 (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: D+VAza03Y5ahoohs8rpkQT5lcne5+pkWoBEPpOBSLl12EyChZz6LQM5B3AGnlzeHHDHyth6TLX+zvTOFYWQziA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR10MB5231 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2023-01-05_10,2023-01-05_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 suspectscore=0 mlxlogscore=999 spamscore=0 bulkscore=0 phishscore=0 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301050152 X-Proofpoint-GUID: 8vpSfveJPIij3DMtR9d45aulU74LCaht X-Proofpoint-ORIG-GUID: 8vpSfveJPIij3DMtR9d45aulU74LCaht Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Liam R. Howlett" Ensure the node isn't dead after reading the node end. Signed-off-by: Liam R. Howlett --- lib/maple_tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index 26e2045d3cda..f3c5ad9ff57f 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -4661,13 +4661,13 @@ static inline void *mas_next_nentry(struct ma_state= *mas, pivots =3D ma_pivots(node, type); slots =3D ma_slots(node, type); mas->index =3D mas_safe_min(mas, pivots, mas->offset); + count =3D ma_data_end(node, type, pivots, mas->max); if (ma_dead_node(node)) return NULL; =20 if (mas->index > max) return NULL; =20 - count =3D ma_data_end(node, type, pivots, mas->max); if (mas->offset > count) return NULL; =20 --=20 2.35.1