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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED 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 EED9AC43381 for ; Tue, 26 Mar 2019 02:13:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BAB6420823 for ; Tue, 26 Mar 2019 02:13:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="nE5CA/I0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730915AbfCZCNv (ORCPT ); Mon, 25 Mar 2019 22:13:51 -0400 Received: from smtp-fw-33001.amazon.com ([207.171.190.10]:14828 "EHLO smtp-fw-33001.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730556AbfCZCNt (ORCPT ); Mon, 25 Mar 2019 22:13:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1553566428; x=1585102428; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=ZS39O6+dawLFLm/ta8ub3QcAXlZPozHwxmUIuUsfM90=; b=nE5CA/I0xUC7yw2cHwt5YRtZZSO21Hu6Ct9+KQxS/SVrHRsdlE9/cXcc SBYM6Y2y+lPZRXJfa+enRpM0a+qvrOIcMupPj6faK3mt2smHJScvFWjf1 nM0ns7oM5gcMKowtuAc73B9p62CWRc3wQmGasCCaKBE0KpaXxiFSsvS2Y 4=; X-IronPort-AV: E=Sophos;i="5.60,270,1549929600"; d="scan'208";a="790845472" Received: from sea3-co-svc-lb6-vlan2.sea.amazon.com (HELO email-inbound-relay-1a-16acd5e0.us-east-1.amazon.com) ([10.47.22.34]) by smtp-border-fw-out-33001.sea14.amazon.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 26 Mar 2019 02:13:43 +0000 Received: from EX13MTAUWC001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1a-16acd5e0.us-east-1.amazon.com (8.14.7/8.14.7) with ESMTP id x2Q2DXi5078649 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Tue, 26 Mar 2019 02:13:35 GMT Received: from EX13d09UWC003.ant.amazon.com (10.43.162.113) by EX13MTAUWC001.ant.amazon.com (10.43.162.135) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Tue, 26 Mar 2019 02:13:35 +0000 Received: from EX13D02UWC004.ant.amazon.com (10.43.162.236) by EX13d09UWC003.ant.amazon.com (10.43.162.113) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Tue, 26 Mar 2019 02:13:34 +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; Tue, 26 Mar 2019 02:13:34 +0000 From: "Saidi, Ali" To: Thomas Gleixner CC: Dave Hansen , Kees Cook , Peter Zijlstra , "Catalin Marinas" , "x86@kernel.org" , "Will Deacon" , "linux-kernel@vger.kernel.org" , Ingo Molnar , "Borislav Petkov" , "Woodhouse, David" , "Andy Lutomirski" , "H. Peter Anvin" , "Andrew Morton" , "linux-arm-kernel@lists.infradead.org" , "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/TsWOLEOmeVSaHu1ISKYWLY6AgAa/s4A= Date: Tue, 26 Mar 2019 02:13:34 +0000 Message-ID: <037ACE94-A408-4CB0-BCA5-3FF9041E43B0@amazon.com> References: <20190312173248.13490-1-alisaidi@amazon.com> <20190312173248.13490-3-alisaidi@amazon.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.43.160.180] Content-Type: text/plain; charset="utf-8" Content-ID: <852CE8557F754E4FB47D67B97DC97127@amazon.com> 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 DQoNCu+7v09uIDMvMjEvMTksIDk6MTEgQU0sICJsaW51eC1hcm0ta2VybmVsIG9uIGJlaGFsZiBv ZiBUaG9tYXMgR2xlaXhuZXIiIDxsaW51eC1hcm0ta2VybmVsLWJvdW5jZXNAbGlzdHMuaW5mcmFk ZWFkLm9yZyBvbiBiZWhhbGYgb2YgdGdseEBsaW51dHJvbml4LmRlPiB3cm90ZToNCg0KICAgIE9u IFR1ZSwgMTIgTWFyIDIwMTksIEFsaSBTYWlkaSB3cm90ZToNCiAgICANCiAgICA+IEluY3JlYXNl IG1tYXBfYmFzZSBieSB0aGUgd29yc3QtY2FzZSBicmsgcmFuZG9taXphdGlvbiBzbyB0aGF0DQog ICAgPiB0aGUgc3RhY2sgYW5kIGhlYXAgcmVtYWluIGFwYXJ0Lg0KICAgID4gDQogICAgPiBJbiBM aW51eCA0LjEzIGEgY2hhbmdlIHdhcyBjb21taXR0ZWQgdGhhdCBzcGVjaWFsIGNhc2VkIHRoZSBr ZXJuZWwgRUxGDQogICAgPiBsb2FkZXIgd2hlbiB0aGUgbG9hZGVyIGlzIGludm9rZWQgZGlyZWN0 bHkgKGVhYjA5NTMyZDQwMDsgYmluZm10X2VsZjogdXNlDQogICAgPiBFTEZfRVRfRFlOX0JBU0Ug b25seSBmb3IgUElFKS4gR2VuZXJhbGx5LCB0aGUgbG9hZGVyIGlzbuKAmXQgaW52b2tlZA0KICAg ID4gZGlyZWN0bHkgYW5kIHRoaXMgaXNzdWUgaXMgbGltaXRlZCB0byBjYXNlcyB3aGVyZSBpdCBp cywgKGUuZyB0byBzZXQgYQ0KICAgID4gbm9uLWluaGVyaXRhYmxlIExEX0xJQlJBUllfUEFUSCwg dGVzdGluZyBuZXcgdmVyc2lvbnMgb2YgdGhlIGxvYWRlcikuIEluDQogICAgPiB0aG9zZSByYXJl IGNhc2VzLCB0aGUgbG9hZGVyIGRvZXNuJ3QgdGFrZSBpbnRvIGFjY291bnQgdGhlIGFtb3VudCBv ZiBicmsNCiAgICA+IHJhbmRvbWl6YXRpb24gdGhhdCB3aWxsIGJlIGFwcGxpZWQgYnkgYXJjaF9y YW5kb21pemVfYnJrKCkuIFRoaXMgY2FuDQogICAgPiBsZWFkIHRvIHRoZSBzdGFjayBhbmQgaGVh cCBiZWluZyBhcmJpdHJhcmlseSBjbG9zZSB0byBlYWNoIG90aGVyLg0KICAgIA0KICAgIFRoYXQg ZXhwbGFpbnMgbm90IHdoeSB5b3UgbmVlZCB0aGlzIGNoYW5nZS4gV2hhdCdzIHRoZSBjb25zZXF1 ZW5jZSBvZiB0aGVtDQogICAgYmVpbmcgY2xvc2UgdG8gZWFjaCBvdGhlcj8NCiAgICANClRoZSBw cm9jZXNzIGRvZXNuJ3QgZ2V0IGl0J3MgcmVxdWVzdGVkIHN0YWNrIHNpemUgYW5kIHN0YWNrIGFs bG9jYXRpb25zIGNvdWxkIGVuZCB1cCBzY3JpYmJsaW5nIG9uIHRoZSBoZWFwLg0KDQpUaGFua3Ms DQpBbGkNCiANCg0K 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=0.1 required=3.0 tests=DKIM_ADSP_ALL,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 4025EC43381 for ; Tue, 26 Mar 2019 02:14:10 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0FB5F20848 for ; Tue, 26 Mar 2019 02:14:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="DdZgmKz7"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="aUAAVEy6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0FB5F20848 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=amazon.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-ID:In-Reply-To: References:Message-ID:Date:Subject:To:From:Reply-To:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=PEcEMXEh33tZNewlXWg2/sHr3uB7WC5y47Nri4wtzUk=; b=DdZgmKz70EsxLc TdjyoUCpI98HZKRZPAasl+zF/WTIGSHsbX4Q48VflfIdYvZOp4omuBgiKPjwscrHgFtyvkJSd87/R UXvJBR6/PWv2deVRcUouwYxZ5cZcwwkvUof64R4BsQC3eHoXMIc/GiIm3pV6BmNTEx8dmqbtLwlap bzYF4SoOe8ZFgr2vQVuPv4XuiM6IAAXCkFt6+0Qy14TnEL4LuC6uNkdzM8qbYxhu5Ac8dREHrsgzp hB+z1vDv7ESpo0U+4BEEi7Q5pP1uuHdFWvgf4l+3w1UxjRdS8PX3SrHWjKqJEEu6OQ+u78KIHTKOg kN5NkISymc4R10QQ1UpA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h8bbF-0000Ho-5H; Tue, 26 Mar 2019 02:14:01 +0000 Received: from smtp-fw-33001.amazon.com ([207.171.190.10]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h8bb6-0000Gf-D5 for linux-arm-kernel@lists.infradead.org; Tue, 26 Mar 2019 02:13:54 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1553566432; x=1585102432; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=ZS39O6+dawLFLm/ta8ub3QcAXlZPozHwxmUIuUsfM90=; b=aUAAVEy6MBbT+QDV8V7LPOhMv1DAmFN1zVnSbZZ36nuUwPv+986yHQKQ t23i+wxEyJsFs/OllhZjilRuney9AJ7w96wI4pZJnHRvr6N+1TEw1e0CS pmzl8mh/VLS1u41dvjHLBOAl0mOjxN3q+tR10RiesED02fhJnt+aJd999 M=; X-IronPort-AV: E=Sophos;i="5.60,270,1549929600"; d="scan'208";a="790845472" Received: from sea3-co-svc-lb6-vlan2.sea.amazon.com (HELO email-inbound-relay-1a-16acd5e0.us-east-1.amazon.com) ([10.47.22.34]) by smtp-border-fw-out-33001.sea14.amazon.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 26 Mar 2019 02:13:43 +0000 Received: from EX13MTAUWC001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1a-16acd5e0.us-east-1.amazon.com (8.14.7/8.14.7) with ESMTP id x2Q2DXi5078649 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Tue, 26 Mar 2019 02:13:35 GMT Received: from EX13d09UWC003.ant.amazon.com (10.43.162.113) by EX13MTAUWC001.ant.amazon.com (10.43.162.135) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Tue, 26 Mar 2019 02:13:35 +0000 Received: from EX13D02UWC004.ant.amazon.com (10.43.162.236) by EX13d09UWC003.ant.amazon.com (10.43.162.113) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Tue, 26 Mar 2019 02:13:34 +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; Tue, 26 Mar 2019 02:13:34 +0000 From: "Saidi, Ali" To: Thomas Gleixner 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/TsWOLEOmeVSaHu1ISKYWLY6AgAa/s4A= Date: Tue, 26 Mar 2019 02:13:34 +0000 Message-ID: <037ACE94-A408-4CB0-BCA5-3FF9041E43B0@amazon.com> References: <20190312173248.13490-1-alisaidi@amazon.com> <20190312173248.13490-3-alisaidi@amazon.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.43.160.180] Content-ID: <852CE8557F754E4FB47D67B97DC97127@amazon.com> MIME-Version: 1.0 Precedence: Bulk X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190325_191352_542548_6AEC78EF X-CRM114-Status: GOOD ( 13.63 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Dave Hansen , Kees Cook , Peter Zijlstra , Catalin Marinas , "x86@kernel.org" , Will Deacon , "linux-kernel@vger.kernel.org" , Ingo Molnar , Borislav Petkov , "linux-arm-kernel@lists.infradead.org" , Andy Lutomirski , "H. Peter Anvin" , Andrew Morton , "Woodhouse, David" , "Liguori, Anthony" Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DQoNCu+7v09uIDMvMjEvMTksIDk6MTEgQU0sICJsaW51eC1hcm0ta2VybmVsIG9uIGJlaGFsZiBv ZiBUaG9tYXMgR2xlaXhuZXIiIDxsaW51eC1hcm0ta2VybmVsLWJvdW5jZXNAbGlzdHMuaW5mcmFk ZWFkLm9yZyBvbiBiZWhhbGYgb2YgdGdseEBsaW51dHJvbml4LmRlPiB3cm90ZToNCg0KICAgIE9u IFR1ZSwgMTIgTWFyIDIwMTksIEFsaSBTYWlkaSB3cm90ZToNCiAgICANCiAgICA+IEluY3JlYXNl IG1tYXBfYmFzZSBieSB0aGUgd29yc3QtY2FzZSBicmsgcmFuZG9taXphdGlvbiBzbyB0aGF0DQog ICAgPiB0aGUgc3RhY2sgYW5kIGhlYXAgcmVtYWluIGFwYXJ0Lg0KICAgID4gDQogICAgPiBJbiBM aW51eCA0LjEzIGEgY2hhbmdlIHdhcyBjb21taXR0ZWQgdGhhdCBzcGVjaWFsIGNhc2VkIHRoZSBr ZXJuZWwgRUxGDQogICAgPiBsb2FkZXIgd2hlbiB0aGUgbG9hZGVyIGlzIGludm9rZWQgZGlyZWN0 bHkgKGVhYjA5NTMyZDQwMDsgYmluZm10X2VsZjogdXNlDQogICAgPiBFTEZfRVRfRFlOX0JBU0Ug b25seSBmb3IgUElFKS4gR2VuZXJhbGx5LCB0aGUgbG9hZGVyIGlzbuKAmXQgaW52b2tlZA0KICAg ID4gZGlyZWN0bHkgYW5kIHRoaXMgaXNzdWUgaXMgbGltaXRlZCB0byBjYXNlcyB3aGVyZSBpdCBp cywgKGUuZyB0byBzZXQgYQ0KICAgID4gbm9uLWluaGVyaXRhYmxlIExEX0xJQlJBUllfUEFUSCwg dGVzdGluZyBuZXcgdmVyc2lvbnMgb2YgdGhlIGxvYWRlcikuIEluDQogICAgPiB0aG9zZSByYXJl IGNhc2VzLCB0aGUgbG9hZGVyIGRvZXNuJ3QgdGFrZSBpbnRvIGFjY291bnQgdGhlIGFtb3VudCBv ZiBicmsNCiAgICA+IHJhbmRvbWl6YXRpb24gdGhhdCB3aWxsIGJlIGFwcGxpZWQgYnkgYXJjaF9y YW5kb21pemVfYnJrKCkuIFRoaXMgY2FuDQogICAgPiBsZWFkIHRvIHRoZSBzdGFjayBhbmQgaGVh cCBiZWluZyBhcmJpdHJhcmlseSBjbG9zZSB0byBlYWNoIG90aGVyLg0KICAgIA0KICAgIFRoYXQg ZXhwbGFpbnMgbm90IHdoeSB5b3UgbmVlZCB0aGlzIGNoYW5nZS4gV2hhdCdzIHRoZSBjb25zZXF1 ZW5jZSBvZiB0aGVtDQogICAgYmVpbmcgY2xvc2UgdG8gZWFjaCBvdGhlcj8NCiAgICANClRoZSBw cm9jZXNzIGRvZXNuJ3QgZ2V0IGl0J3MgcmVxdWVzdGVkIHN0YWNrIHNpemUgYW5kIHN0YWNrIGFs bG9jYXRpb25zIGNvdWxkIGVuZCB1cCBzY3JpYmJsaW5nIG9uIHRoZSBoZWFwLg0KDQpUaGFua3Ms DQpBbGkNCiANCg0KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5p bmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8v bGludXgtYXJtLWtlcm5lbAo=