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=-2.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS autolearn=ham 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 9CC33C43387 for ; Thu, 17 Jan 2019 18:07:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6871B20851 for ; Thu, 17 Jan 2019 18:07:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=vmware.com header.i=@vmware.com header.b="JmyxMcEe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726900AbfAQSHJ (ORCPT ); Thu, 17 Jan 2019 13:07:09 -0500 Received: from mail-eopbgr750071.outbound.protection.outlook.com ([40.107.75.71]:62783 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726883AbfAQSHJ (ORCPT ); Thu, 17 Jan 2019 13:07:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vmware.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=mkClpqSs7sYqRYRfvqlxznFCl+jGUQf5gmjOEUwWw4w=; b=JmyxMcEetW0qLuYESq6lM/XqC4i1UNV9kftXV4XgD59g1Ur2K9WRH02Wt5yzLXvKlCHkAxVvy5S2Uvu/1san3W3qYIFlcP53WyAz1eV5QhWrlfi3VP6ah0rzBHm/VHV4TsjdGR9HjpH0dh1tGeOh0hUxMSxB2DwkXnm7eS2zJyc= Received: from BYAPR05MB4776.namprd05.prod.outlook.com (52.135.233.146) by BYAPR05MB5925.namprd05.prod.outlook.com (20.178.50.218) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1537.18; Thu, 17 Jan 2019 18:07:04 +0000 Received: from BYAPR05MB4776.namprd05.prod.outlook.com ([fe80::35a9:ab4b:cc18:b732]) by BYAPR05MB4776.namprd05.prod.outlook.com ([fe80::35a9:ab4b:cc18:b732%2]) with mapi id 15.20.1537.018; Thu, 17 Jan 2019 18:07:04 +0000 From: Nadav Amit To: Masami Hiramatsu CC: Rick Edgecombe , Andy Lutomirski , Ingo Molnar , Linux List Kernel Mailing , the arch/x86 maintainers , "H. Peter Anvin" , Thomas Gleixner , Borislav Petkov , Dave Hansen , Peter Zijlstra , Damian Tometzki , linux-integrity , LSM List , Andrew Morton , Kernel Hardening , Linux-MM , Will Deacon , Ard Biesheuvel , "kristen@linux.intel.com" , "deneen.t.dock@intel.com" Subject: Re: [PATCH 17/17] module: Prevent module removal racing with text_poke() Thread-Topic: [PATCH 17/17] module: Prevent module removal racing with text_poke() Thread-Index: AQHUrfxSkijPxOK+LEe5sodLHxfUCqWzF74AgACrLoA= Date: Thu, 17 Jan 2019 18:07:03 +0000 Message-ID: References: <20190117003259.23141-1-rick.p.edgecombe@intel.com> <20190117003259.23141-18-rick.p.edgecombe@intel.com> <20190117165422.d33d1af83db8716e24960a3c@kernel.org> In-Reply-To: <20190117165422.d33d1af83db8716e24960a3c@kernel.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [66.170.99.1] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;BYAPR05MB5925;20:Vi/apmxjJ23QUDmVs3FnsGIZfpkP0XBdKEnQveUodPjdDrBHn2DDzAbOJctfUvOcKcU6xctxtlc0siIM6CKixwIxIdXT6Jy22CbleTpK9wwCgpsfigCP5wYk2OkeOesS/6QpsTxWU/I07CKjpgyYUj6A0j+EBfEa6mbqa3DZHsY= x-ms-office365-filtering-correlation-id: 2d8f60d2-62fa-41b9-2867-08d67ca6960c x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600109)(711020)(2017052603328)(7153060)(7193020);SRVR:BYAPR05MB5925; x-ms-traffictypediagnostic: BYAPR05MB5925: x-microsoft-antispam-prvs: x-forefront-prvs: 0920602B08 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(346002)(136003)(396003)(376002)(39860400002)(366004)(199004)(189003)(105586002)(106356001)(68736007)(8676002)(478600001)(86362001)(83716004)(486006)(97736004)(14454004)(81156014)(71200400001)(7736002)(256004)(2906002)(71190400001)(14444005)(25786009)(39060400002)(99286004)(36756003)(4326008)(229853002)(305945005)(81166006)(7416002)(66066001)(3846002)(6116002)(8936002)(6246003)(6436002)(6916009)(33656002)(54906003)(82746002)(102836004)(6486002)(53546011)(5660300001)(53936002)(6506007)(76176011)(6512007)(446003)(476003)(2616005)(11346002)(316002)(186003)(6346003)(26005);DIR:OUT;SFP:1101;SCL:1;SRVR:BYAPR05MB5925;H:BYAPR05MB4776.namprd05.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: vmware.com does not designate permitted sender hosts) authentication-results: spf=none (sender IP is ) smtp.mailfrom=namit@vmware.com; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: UQEcAIhoevlTIiGu20nBIAcd1WAMT+k2PIofR7sRF6aWiLo8vI9aNnfgTx9125m06Ysn3zhU06TnorLtCNTJGr2fkJ/G8pTBHHhGnGc9/l81Y6GHy4lCdHJx1Wh97TU9H4fwTWSTwlRDyzWdE/VymaB2oQvbTEiQ0V0dL30wn2lWvYePvVhm1A/7v2if900GTSF68GEmJM8Ai0764y6RziRZ4CgwW/YhCvtTTMLMi9okpBBqah+H2ZUZNpXLhuOl94X/FWW2wDkARvfbPBTpcNupJLDzfCvteuwK31/oARQ39OWRfkGyIx0SdBJ69z2sVFpVhe3bGLKbPc72GUhPsTR3GrOp7InKgOqk5tVCFkIm9k4HQc/vdUBULHHkZyYWBQ0UfJQuuWjEhDWZaBX2KmOulTs/MVMIgaXxtW03Kqo= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="utf-8" Content-ID: <697B667B5CAE78419D006F479D0BF3CB@namprd05.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: vmware.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2d8f60d2-62fa-41b9-2867-08d67ca6960c X-MS-Exchange-CrossTenant-originalarrivaltime: 17 Jan 2019 18:07:04.0126 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b39138ca-3cee-4b4a-a4d6-cd83d9dd62f0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR05MB5925 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org PiBPbiBKYW4gMTYsIDIwMTksIGF0IDExOjU0IFBNLCBNYXNhbWkgSGlyYW1hdHN1IDxtaGlyYW1h dEBrZXJuZWwub3JnPiB3cm90ZToNCj4gDQo+IE9uIFdlZCwgMTYgSmFuIDIwMTkgMTY6MzI6NTkg LTA4MDANCj4gUmljayBFZGdlY29tYmUgPHJpY2sucC5lZGdlY29tYmVAaW50ZWwuY29tPiB3cm90 ZToNCj4gDQo+PiBGcm9tOiBOYWRhdiBBbWl0IDxuYW1pdEB2bXdhcmUuY29tPg0KPj4gDQo+PiBJ dCBzZWVtcyBkYW5nZXJvdXMgdG8gYWxsb3cgY29kZSBtb2RpZmljYXRpb25zIHRvIHRha2UgcGxh Y2UNCj4+IGNvbmN1cnJlbnRseSB3aXRoIG1vZHVsZSB1bmxvYWRpbmcuIFNvIHRha2UgdGhlIHRl eHRfbXV0ZXggd2hpbGUgdGhlDQo+PiBtZW1vcnkgb2YgdGhlIG1vZHVsZSBpcyBmcmVlZC4NCj4g DQo+IEF0IHRoYXQgcG9pbnQsIHNpbmNlIHRoZSBtb2R1bGUgaXRzZWxmIGlzIHJlbW92ZWQgZnJv bSBtb2R1bGUgbGlzdCwNCj4gaXQgc2VlbXMgbm8gYWN0dWFsIGhhcm0uIE9yIHdvdWxkIHlvdSBo YXZlIGFueSBjb25jZXJuPw0KDQpTbyBpdCBhcHBlYXJzIHRoYXQgeW91IGFyZSByaWdodCBhbmQg YWxsIHRoZSB1c2VycyBvZiB0ZXh0X3Bva2UoKSBhbmQNCnRleHRfcG9rZV9icCgpIGRvIGluc3Rh bGwgbW9kdWxlIG5vdGlmaWVycywgYW5kIHJlbW92ZSB0aGUgbW9kdWxlIGZyb20gdGhlaXINCmlu dGVybmFsIGRhdGEgc3RydWN0dXJlIHdoZW4gdGhleSBhcmUgZG9uZSAoKikuIEFzIGxvbmcgYXMg dGhleSBwcmV2ZW50DQp0ZXh0X3Bva2UqKCkgdG8gYmUgY2FsbGVkIGNvbmN1cnJlbnRseSAoZS5n LiwgdXNpbmcganVtcF9sYWJlbF9sb2NrKCkpLA0KZXZlcnl0aGluZyBpcyBmaW5lLg0KDQpIYXZp bmcgc2FpZCB0aGF0LCB0aGUgcXVlc3Rpb24gaXMgd2hldGhlciB5b3Ug4oCcdHJ1c3TigJ0gdGV4 dF9wb2tlKigpIHVzZXJzIHRvDQpkbyBzby4gdGV4dF9wb2tlKCkgZGVzY3JpcHRpb24gZG9lcyBu b3QgZGF5IGV4cGxpY2l0bHkgdGhhdCB5b3UgbmVlZCB0bw0KcHJldmVudCBtb2R1bGVzIGZyb20g YmVpbmcgcmVtb3ZlZC4NCg0KV2hhdCBkbyB5b3Ugc2F5Pw0KDQoNCigqKSBJIGFtIG5vdCBzdXJl IGFib3V0IGtnZGIsIGJ1dCBpdCBwcm9iYWJseSBkb2VzIG5vdCBtYXR0ZXIgbXVjaA==