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=-1.1 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 AF7C8C43381 for ; Sun, 17 Mar 2019 15:52:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7542721019 for ; Sun, 17 Mar 2019 15:52:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="nv49+/pd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727433AbfCQPwU (ORCPT ); Sun, 17 Mar 2019 11:52:20 -0400 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:1332 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726677AbfCQPwT (ORCPT ); Sun, 17 Mar 2019 11:52:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1552837939; x=1584373939; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=VzmUeWkQQDo7bTzN1x7A+c/QOoqQvVIwRVM72/Tm9N8=; b=nv49+/pd5uqbgD8CWHVpwXE+S9UJQ1G2+YPMMWgJ3jPAgiqdKHXv9ose SpqVoyANf5GY8WQHomIxhnXApap8MZu17bR6tURMd7DDUSYXREu+Vv8Zd odjlx67WLFkR88MABvPdJ7BZuEtJgesqjJp4/CDt8yg3yIDpvN/z4aMKT M=; X-IronPort-AV: E=Sophos;i="5.58,489,1544486400"; d="scan'208";a="665539149" Received: from sea3-co-svc-lb6-vlan3.sea.amazon.com (HELO email-inbound-relay-2c-4e7c8266.us-west-2.amazon.com) ([10.47.22.38]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 17 Mar 2019 15:52:16 +0000 Received: from EX13MTAUWC001.ant.amazon.com (pdx1-ws-svc-p6-lb9-vlan2.pdx.amazon.com [10.236.137.194]) by email-inbound-relay-2c-4e7c8266.us-west-2.amazon.com (8.14.7/8.14.7) with ESMTP id x2HFqCkd079957 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Sun, 17 Mar 2019 15:52:14 GMT Received: from EX13d09UWC002.ant.amazon.com (10.43.162.102) by EX13MTAUWC001.ant.amazon.com (10.43.162.135) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Sun, 17 Mar 2019 15:52:12 +0000 Received: from EX13D02UWC004.ant.amazon.com (10.43.162.236) by EX13d09UWC002.ant.amazon.com (10.43.162.102) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Sun, 17 Mar 2019 15:52:12 +0000 Received: from EX13D02UWC004.ant.amazon.com ([10.43.162.236]) by EX13D02UWC004.ant.amazon.com ([10.43.162.236]) with mapi id 15.00.1367.000; Sun, 17 Mar 2019 15:52:09 +0000 From: "Saidi, Ali" To: Dave Hansen CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "x86@kernel.org" , "H. Peter Anvin" , Andrew Morton , Kees Cook , Borislav Petkov , "Ingo Molnar" , Thomas Gleixner , "Peter Zijlstra" , Andy Lutomirski , "Dave Hansen" , Will Deacon , Catalin Marinas , "Woodhouse, David" , "Liguori, Anthony" Subject: Re: [PATCH 2/2] x86/mmap: handle worst-case heap randomization in mmap_base Thread-Topic: [PATCH 2/2] x86/mmap: handle worst-case heap randomization in mmap_base Thread-Index: AQHU2PmhiRz/TsWOLEOmeVSaHu1ISKYJwNUAgAY/+B8= Date: Sun, 17 Mar 2019 15:52:08 +0000 Message-ID: <3A8AEAFE-315E-48D2-A246-D7BF1EBB9FF8@amazon.com> References: <20190312173248.13490-1-alisaidi@amazon.com> <20190312173248.13490-3-alisaidi@amazon.com>,<1bd04037-698f-00c7-aa91-2bfec751bb0e@intel.com> In-Reply-To: <1bd04037-698f-00c7-aa91-2bfec751bb0e@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQoNCj4gT24gTWFyIDEzLCAyMDE5LCBhdCAxMToyNiBBTSwgRGF2ZSBIYW5zZW4gPGRhdmUuaGFu c2VuQGludGVsLmNvbT4gd3JvdGU6DQo+IA0KPj4gT24gMy8xMi8xOSAxMDozMiBBTSwgQWxpIFNh aWRpIHdyb3RlOg0KPj4gKyAgICAvKiBQcm92aWRlIHNwYWNlIGZvciBicmsgcmFuZG9taXphdGlv biAqLw0KPj4gKyAgICBwYWQgKz0gU1pfMzJNOw0KPiANCj4gSnVzdCBjdXJpb3VzOiAgV2h5IGlz IHRoZSBwYWRkaW5nIGluIHlvdXIgb3RoZXIgcGF0Y2ggY29uZGl0aW9uYWwgb24gdGhlDQo+IDMy LWJpdCB2cy4gNjQtYml0IGFwcHMsIGJ1dCBoZXJlIGl0J3MgYWx3YXlzIDMyTT8NCkFybSBjaGFu Z2VzIHRoZSBhbW91bnQgb2YgYnJrIGJhc2VkIG9uIHRoZSBwcm9jZXNzIGJlaW5nIDMyIHZzIDY0 IGJpdC4gWDg2IGRvZXNu4oCZdCBhcHBlYXIgdG8gZG8gdGhpcy4gDQo+IA0KPiBBbHNvLCBkaWQg eW91IGhpdCB0aGlzIHByb2JsZW0gaW4gcHJhY3RpY2Ugc29tZWhvdz8NCg0KSnVzdCBkZWJ1Z2dp bmcgYSBjcmFzaCB3aGVuIHRlc3RpbmcgYSB2ZXJzaW9uIG9mIGEgbGlicmFyeSBJIGNvbXBpbGVk LiANCg0KQWxp