From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7217C7618F for ; Tue, 16 Jul 2019 16:35:54 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 73227206C2 for ; Tue, 16 Jul 2019 16:35:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=Mellanox.com header.i=@Mellanox.com header.b="NQc/ODjH" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 73227206C2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mellanox.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 0D9E16B0006; Tue, 16 Jul 2019 12:35:54 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 08BCB8E0005; Tue, 16 Jul 2019 12:35:54 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E6E0B8E0003; Tue, 16 Jul 2019 12:35:53 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-ed1-f71.google.com (mail-ed1-f71.google.com [209.85.208.71]) by kanga.kvack.org (Postfix) with ESMTP id 985A66B0006 for ; Tue, 16 Jul 2019 12:35:53 -0400 (EDT) Received: by mail-ed1-f71.google.com with SMTP id n3so16325439edr.8 for ; Tue, 16 Jul 2019 09:35:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:dkim-signature:from:to:cc:subject:thread-topic :thread-index:date:message-id:references:in-reply-to:accept-language :content-language:content-id:content-transfer-encoding:mime-version; bh=agnbLE2Oiu3hH4zYPcI/nBXxOki84bSzcoJRnyF0eco=; b=SV8UwlQ4VeAsCeTtfVXIcol+FZ2FuDkAE5YhqaCd1ED0vCVWYKPUOXt3PKDmKA9OED jKzAA5yu9jFrsKI1WEKe40CVmz/ob4HnfljOHzsXkde/SwHmX30SAkQ4epJLaXxt8GgZ o5XkDq+3cZoAkYw9jlYxxvjWDgVoTtaWhQ1AxdZOpFXxeuTYV8zX6h4pgl4S+cA4+tiU AcbhqhOVCyURgOwUNFimDEb8+0qrplE6fkTJhE0ZuPYDDLuAPkZceQKymaAhrKtw9B6S tF7suVpYHkJv1N1y23xwEjFa7+AQnaksLORRkGaM9l7L9ZCq1eZLgARMP+255p+SGjz7 LOyw== X-Gm-Message-State: APjAAAXziAt2hRQ6z4+t0OCIwwbOWx33JzadAxYr0HrPm2MrwlgsykpY 1CesuGKjO+mgeyU3qqY4BQhT0HBre8sHl0xd7gWWte/Fq3GXnoObKnSMD+UqG8yaqrXEO6v7vPZ Ece9m0MW0Gd+7vCFJ4jhiD3fyJmVzw5Ny+UrHFRCs0OGQYLHcbQizBa+5NkCc44+4gg== X-Received: by 2002:a50:f4d8:: with SMTP id v24mr30429147edm.166.1563294953196; Tue, 16 Jul 2019 09:35:53 -0700 (PDT) X-Google-Smtp-Source: APXvYqz9CjCWCqKmJsUn4NJWdw16SNRjYStlcv7l7s3aABdsmbFFZKl/KGW2HogIM9zuDPm432vp X-Received: by 2002:a50:f4d8:: with SMTP id v24mr30429087edm.166.1563294952476; Tue, 16 Jul 2019 09:35:52 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1563294952; cv=pass; d=google.com; s=arc-20160816; b=jaCXJ4Gt+Stn/h1XOGZ399pYTbEYqo7EkraOtlHM2BQiUVfGUsJVIIR0RioGYjcHso 3HZF9lixNsmWApyTyvdQDZMwIlIHxuuRJ07THgbNu328rLeb0WL3T1DJY1Ngev3Yyf9B 0ZRLjJFQZtBwIEE6sFaOaG8UoDCRG9gXGb8IbSmFNwqe34D6NxxrxZceAuTtkFEdwLpZ AZ58du6YNnMfiQyVw/vS1T+UDtmCC9oJQrxJGCay1gnXWxsAtkxSXpVnciIaDRue9zkg vVlrQuasIOl1XRxV885HpSnbRsW2OWppvZ2TTEl+DU5sJSYbl+FCLuOmf1DV+LT2ClzB f/Dg== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:content-transfer-encoding:content-id:content-language :accept-language:in-reply-to:references:message-id:date:thread-index :thread-topic:subject:cc:to:from:dkim-signature; bh=agnbLE2Oiu3hH4zYPcI/nBXxOki84bSzcoJRnyF0eco=; b=u7yrgDhj4DSzH5W8THL4ElOvZsJbJKOcIZLJGI6804Of4O1NqxNH6rax9V/ch33Ncs NDYDHK1y+dkJogXunz+Hfm9mN3LB794YawR/uPHC6Q2N9guqkxSj7d86niU8fEu6L5MV 7TIaq7+6gwSn0j9aZc/Wqu0kJHCymju4+wyxM5sb3oTF/5kq492a97vb7tSsI0xI0l3I Jr7m2nsNC+mFYUhd6DrMRrnMrZ6wz1QjPNAnzIetl89vA3ffXFVJHe8YiqvJAC0JUrTL SrsFGve7zNINZvP208sKwcS9sEZGXyp6ssASeTihlDmCx34Sc875Zzz/1ogHZnquAxxG GcaA== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@Mellanox.com header.s=selector2 header.b="NQc/ODjH"; arc=pass (i=1 spf=pass spfdomain=mellanox.com dkim=pass dkdomain=mellanox.com dmarc=pass fromdomain=mellanox.com); spf=pass (google.com: domain of jgg@mellanox.com designates 40.107.5.77 as permitted sender) smtp.mailfrom=jgg@mellanox.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mellanox.com Received: from EUR03-VE1-obe.outbound.protection.outlook.com (mail-eopbgr50077.outbound.protection.outlook.com. [40.107.5.77]) by mx.google.com with ESMTPS id e26si12104671edq.401.2019.07.16.09.35.52 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 Jul 2019 09:35:52 -0700 (PDT) Received-SPF: pass (google.com: domain of jgg@mellanox.com designates 40.107.5.77 as permitted sender) client-ip=40.107.5.77; Authentication-Results: mx.google.com; dkim=pass header.i=@Mellanox.com header.s=selector2 header.b="NQc/ODjH"; arc=pass (i=1 spf=pass spfdomain=mellanox.com dkim=pass dkdomain=mellanox.com dmarc=pass fromdomain=mellanox.com); spf=pass (google.com: domain of jgg@mellanox.com designates 40.107.5.77 as permitted sender) smtp.mailfrom=jgg@mellanox.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mellanox.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=IVDse8nMg4YPT94DzatQFeEZiAi4j+RZiLlQOarEOWe8fNbzE1bqHdqToZf3DMb1iY8RjhoIzRuZ04H7yqXyHPrMBWrya9RjHMSYTCbU5zIMyxMsPvlGEVKLhAGPrPWLAKqo87nRJ3LlP4f01Ak8KJ8iA7RvB9P2oENxuJSU6lNlOoyqHH+b6Wswe1u1pTYqcLDLod1TyddCIG6h/9tf6vGlw3FSwxu/5zB+3IZ1ABXYgcceKYTvSgpB0mjn3AU9I+HSv2GslTDD0TkPbIOQItOkV12IRnKzZ1ynhVvGi4ahLMOexaTqbL7HnHpT1AkzXssxeI0VQi4y3/sLCRB51A== 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-SenderADCheck; bh=agnbLE2Oiu3hH4zYPcI/nBXxOki84bSzcoJRnyF0eco=; b=FZnf5CEkVJjjR8ZvA3gMykbUo1aCz0R92/lEYp8KnLvsOtU3juYHVYExbVcqoqUxskJ//uq8016nAxnjlvcwsWV0FN/F5P6Djufy7lvgjNZmjbGpm/X9Kb+eb2dRNG1vZ86w5TaNPVZxDEcVF8IqUoiG8x+RY9qneSQ1oMx2GB3ocEinHZ5xACf/ajSb4N6INMCoxjI+tigAfYBnXVemO1L/73HdfT2tcWmWYHEgevXBBQMkA00othD+9x4u/y099kRYiMAW6QWOzTkv94MJa0KnJbibJFcPIQm4lHCpZC9ilS+k2ZF1HF2z3JsrUKtckAA4YNcjfLNlwezITGrzlA== ARC-Authentication-Results: i=1; mx.microsoft.com 1;spf=pass smtp.mailfrom=mellanox.com;dmarc=pass action=none header.from=mellanox.com;dkim=pass header.d=mellanox.com;arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Mellanox.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=agnbLE2Oiu3hH4zYPcI/nBXxOki84bSzcoJRnyF0eco=; b=NQc/ODjHxPmPzhMG/un4lAtEEtp6MylJC24bQG22DL+ZVnLdDHCmaCHgKLDMdl84F7QZlJiylgdWf5zGyDuws8RtZBgqDI+qCz2iS7uRm/IEz2vBqc8m8CM5tLnNiVdFE38UJUG4Q9tFwA6tolkzU7qWlkJ+6B4nBF/g8e08xxc= Received: from VI1PR05MB4141.eurprd05.prod.outlook.com (10.171.182.144) by VI1PR05MB6160.eurprd05.prod.outlook.com (20.178.123.90) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2073.14; Tue, 16 Jul 2019 16:35:50 +0000 Received: from VI1PR05MB4141.eurprd05.prod.outlook.com ([fe80::f5d8:df9:731:682e]) by VI1PR05MB4141.eurprd05.prod.outlook.com ([fe80::f5d8:df9:731:682e%5]) with mapi id 15.20.2073.012; Tue, 16 Jul 2019 16:35:50 +0000 From: Jason Gunthorpe To: =?utf-8?B?TWljaGVsIETDpG56ZXI=?= CC: "linux-mm@kvack.org" , =?utf-8?B?SsOpcsO0bWUgR2xpc3Nl?= , "amd-gfx@lists.freedesktop.org" Subject: Re: HMM related use-after-free with amdgpu Thread-Topic: HMM related use-after-free with amdgpu Thread-Index: AQHVOy2BuBeOBwIpPkyfmkDLpwDNk6bL7iyAgAGDN4CAAAFJgA== Date: Tue, 16 Jul 2019 16:35:50 +0000 Message-ID: <20190716163545.GF29741@mellanox.com> References: <9a38f48b-3974-a238-5987-5251c1343f6b@daenzer.net> <20190715172515.GA5043@mellanox.com> <823db68e-6601-bb3a-0c1f-bfc5169cb7c9@daenzer.net> In-Reply-To: <823db68e-6601-bb3a-0c1f-bfc5169cb7c9@daenzer.net> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MN2PR01CA0005.prod.exchangelabs.com (2603:10b6:208:10c::18) To VI1PR05MB4141.eurprd05.prod.outlook.com (2603:10a6:803:4d::16) authentication-results: spf=none (sender IP is ) smtp.mailfrom=jgg@mellanox.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [156.34.55.100] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 7572130f-89e4-4e00-0e58-08d70a0ba9a9 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(4618075)(2017052603328)(7193020);SRVR:VI1PR05MB6160; x-ms-traffictypediagnostic: VI1PR05MB6160: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; x-forefront-prvs: 0100732B76 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(4636009)(346002)(39860400002)(136003)(376002)(396003)(366004)(199004)(189003)(54906003)(476003)(2616005)(6512007)(25786009)(6486002)(3846002)(6506007)(11346002)(102836004)(99286004)(6116002)(446003)(14454004)(26005)(186003)(386003)(6436002)(316002)(81166006)(53546011)(81156014)(64756008)(76176011)(486006)(1076003)(8936002)(66446008)(66946007)(66476007)(66556008)(33656002)(6246003)(52116002)(68736007)(478600001)(4326008)(71200400001)(71190400001)(66066001)(5660300002)(7736002)(2906002)(305945005)(229853002)(6916009)(86362001)(8676002)(256004)(36756003)(5024004)(53936002);DIR:OUT;SFP:1101;SCL:1;SRVR:VI1PR05MB6160;H:VI1PR05MB4141.eurprd05.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: mellanox.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 6C116hOppDlaS8n39DlDUZta6RTYcCY+Y3Cv8Ey1kniH4pFjjoCNcI73+flrRj/zAft4J2pJHexh+XKM9Ormi5N6mxdc5sraQDrSspb8wCFdOLH+0pRG3HcvsEiDkQ/r9Ql2sPkw0obWvpsfDZ4Uu1bk0EDeiurn8VZ+T8GVYgxB6J6S8mUyy+CmqhIA12PdRY5YyX359wOzOEu22553AQU3VDQkXtN+JVc2AziCVVGvQn7bydYpisR8kiZWm1i5NbdvCPqh8W3sV2VihYHTWG1dX9GgKo7xZFed0Ar61K8DaGfgFDfGhAy9oqwGDMXDW8FUbqQixPd5Nk0PNCpQNeWP2HdXHXeTQi24JJGrdJ/P9lcHrzHbox0/xdEZaJY3iT+Deh6FzoeO2l9UwJGDJX/t+oyYhJH73ap8cTcRhfc= Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7572130f-89e4-4e00-0e58-08d70a0ba9a9 X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Jul 2019 16:35:50.4630 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: jgg@mellanox.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR05MB6160 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: T24gVHVlLCBKdWwgMTYsIDIwMTkgYXQgMDY6MzE6MDlQTSArMDIwMCwgTWljaGVsIETDpG56ZXIg d3JvdGU6DQo+IE9uIDIwMTktMDctMTUgNzoyNSBwLm0uLCBKYXNvbiBHdW50aG9ycGUgd3JvdGU6 DQo+ID4gT24gTW9uLCBKdWwgMTUsIDIwMTkgYXQgMDY6NTE6MDZQTSArMDIwMCwgTWljaGVsIETD pG56ZXIgd3JvdGU6DQo+ID4+DQo+ID4+IFdpdGggYSBLQVNBTiBlbmFibGVkIGtlcm5lbCBidWls dCBmcm9tIGFtZC1zdGFnaW5nLWRybS1uZXh0LCB0aGUNCj4gPj4gYXR0YWNoZWQgdXNlLWFmdGVy LWZyZWUgaXMgcHJldHR5IHJlbGlhYmx5IGRldGVjdGVkIGR1cmluZyBhIHBpZ2xpdCBncHUgcnVu Lg0KPiA+IA0KPiA+IERvZXMgdGhpcyBicmFuY2ggeW91IGFyZSB0ZXN0aW5nIGhhdmUgdGhlIGht bS5naXQgbWVyZ2VkPyBJIHRoaW5rIGZyb20NCj4gPiB0aGUgbmFtZSBpdCBkb2VzIG5vdD8NCj4g DQo+IEluZGVlZCwgbm8uDQo+IA0KPiANCj4gPiBVc2UgYWZ0ZXIgZnJlZSdzIG9mIHRoaXMgbmF0 dXJlIHdlcmUgc29tZXRoaW5nIHRoYXQgd2FzIGZpeGVkIGluDQo+ID4gaG1tLmdpdC4uDQo+ID4g DQo+ID4gSSBkb24ndCBzZWUgYW4gb2J2aW91cyB3YXkgeW91IGNhbiBoaXQgc29tZXRoaW5nIGxp a2UgdGhpcyB3aXRoIHRoZQ0KPiA+IG5ldyBjb2RlIGFycmFuZ2VtZW50Li4NCj4gDQo+IEkgdHJp ZWQgbWVyZ2luZyB0aGUgaG1tLWRldm1lbS1jbGVhbnVwLjQgY2hhbmdlc1swXSBpbnRvIG15IDUu Mi55ICsNCj4gZHJtLW5leHQgZm9yIDUuMyBrZXJuZWwuIFdoaWxlIHRoZSByZXN1bHQgZGlkbid0 IGhpdCB0aGUgcHJvYmxlbSwgYWxsDQo+IEdMX0FNRF9waW5uZWRfbWVtb3J5IHBpZ2xpdCB0ZXN0 cyBmYWlsZWQsIHNvIEkgc3VzcGVjdCB0aGUgcHJvYmxlbSB3YXMNCj4gc2ltcGx5IGF2b2lkZWQg Ynkgbm90IGFjdHVhbGx5IGhpdHRpbmcgdGhlIEhNTSByZWxhdGVkIGZ1bmN0aW9uYWxpdHkuDQo+ IA0KPiBJdCdzIHBvc3NpYmxlIHRoYXQgSSBtYWRlIGEgbWlzdGFrZSBpbiBtZXJnaW5nIHRoZSBj aGFuZ2VzLCBvciB0aGF0IEkNCj4gbWlzc2VkIHNvbWUgb3RoZXIgcmVxdWlyZWQgY2hhbmdlcy4g QnV0IGl0J3MgYWxzbyBwb3NzaWJsZSB0aGF0IHRoZSBITU0NCj4gY2hhbmdlcyBicm9rZSB0aGUg Y29ycmVzcG9uZGluZyB1c2VyLXBvaW50ZXIgZnVuY3Rpb25hbGl0eSBpbiBhbWRncHUuDQoNCk5v dCBzdXJlLCB0aGlzIHdhcyBhbGwgVGVzdGVkIGJ5IHRoZSBBTUQgdGVhbSBzbyBpdCBzaG91bGQg d29yaywgSQ0KaG9wZS4NCg0KSXQgc2hvdWxkIGFsbCBiZSBzb3J0ZWQgb3V0IGluIHJjMSwgdHJ5 IGFnYWluIHRoZW4/DQoNCkphc29uDQo=