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=-1.0 required=3.0 tests=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 6B930C282E1 for ; Thu, 25 Apr 2019 11:24:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 376B62084B for ; Thu, 25 Apr 2019 11:24:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387614AbfDYLYH (ORCPT ); Thu, 25 Apr 2019 07:24:07 -0400 Received: from mga04.intel.com ([192.55.52.120]:2250 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730941AbfDYLYC (ORCPT ); Thu, 25 Apr 2019 07:24:02 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Apr 2019 04:24:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,393,1549958400"; d="scan'208";a="340697912" Received: from irsmsx104.ger.corp.intel.com ([163.33.3.159]) by fmsmga006.fm.intel.com with ESMTP; 25 Apr 2019 04:23:59 -0700 Received: from irsmsx111.ger.corp.intel.com (10.108.20.4) by IRSMSX104.ger.corp.intel.com (163.33.3.159) with Microsoft SMTP Server (TLS) id 14.3.408.0; Thu, 25 Apr 2019 12:23:58 +0100 Received: from irsmsx102.ger.corp.intel.com ([169.254.2.21]) by irsmsx111.ger.corp.intel.com ([169.254.2.85]) with mapi id 14.03.0415.000; Thu, 25 Apr 2019 12:23:58 +0100 From: "Reshetova, Elena" To: David Laight , 'Theodore Ts'o' , Ingo Molnar , 'Peter Zijlstra' , "keescook@chromium.org" CC: Daniel Borkmann , "luto@kernel.org" , "luto@amacapital.net" , "linux-kernel@vger.kernel.org" , "jpoimboe@redhat.com" , "jannh@google.com" , "Perla, Enrico" , "mingo@redhat.com" , "bp@alien8.de" , "tglx@linutronix.de" , "gregkh@linuxfoundation.org" Subject: RE: [PATCH] x86/entry/64: randomize kernel stack offset upon syscall Thread-Topic: [PATCH] x86/entry/64: randomize kernel stack offset upon syscall Thread-Index: AQHU81HQwzT9MH4dM0y/JZXnSwiYT6Y8wW2AgAAdM1CAAXexAIAANZ3ggAAW1gCAAApRgIAAMeKAgAAd+PCAAQuGgIAAYQuAgAAKhwCACsPi4IAAFTEAgAF9VBA= Date: Thu, 25 Apr 2019 11:23:57 +0000 Message-ID: <2236FBA76BA1254E88B949DDB74E612BA4C61E91@IRSMSX102.ger.corp.intel.com> References: <20190415060918.3766-1-elena.reshetova@intel.com> <20190415072535.GA51449@gmail.com> <2236FBA76BA1254E88B949DDB74E612BA4C4F90F@IRSMSX102.ger.corp.intel.com> <20190416073444.GC127769@gmail.com> <2236FBA76BA1254E88B949DDB74E612BA4C51962@IRSMSX102.ger.corp.intel.com> <20190416120822.GV11158@hirez.programming.kicks-ass.net> <01914abbfc1a4053897d8d87a63e3411@AcuMS.aculab.com> <20190416154348.GB3004@mit.edu> <2236FBA76BA1254E88B949DDB74E612BA4C52338@IRSMSX102.ger.corp.intel.com> <9cf586757eb44f2c8f167abf078da921@AcuMS.aculab.com> <20190417151555.GG4686@mit.edu> <99e045427125403ba2b90c2707d74e02@AcuMS.aculab.com> <2236FBA76BA1254E88B949DDB74E612BA4C5E473@IRSMSX102.ger.corp.intel.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.0.600.7 dlp-reaction: no-action x-ctpclassification: CTP_NT x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiM2UwMjc5ZDQtMjI4Zi00YjlmLWJiMDctM2MyNzExODY4MDVjIiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoiOHBjVVlpOGZcL1RCMHgrQ2lxc2xUMm56VGJtMXBWTStWRFRNeWFyQVh4czVHaXJJTGQ1YmFaZnhxSGNQaThoUXUifQ== x-originating-ip: [163.33.239.181] 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 PiBGcm9tOiBSZXNoZXRvdmEsIEVsZW5hDQo+ID4gU2VudDogMjQgQXByaWwgMjAxOSAxMjo0Mw0K PiA+DQo+ID4gU29ycnkgZm9yIHRoZSBkZWxheSAtIEVhc3RlciBob2xpZGF5cyArIEkgd2FzIHRy eWluZyB0byBhcnJhbmdlIG15IGJyYWluIGFyb3VuZA0KPiBwcm9wb3NlZCBvcHRpb25zLg0KPiA+ IEhlcmUgd2hhdCBJIHRoaW5rIG91ciBvcHRpb25zIGFyZSB3aXRoIHJlZ2FyZHMgdG8gdGhlIHNv dXJjZSBvZiByYW5kb21uZXNzOg0KPiA+DQo+ID4gMSkgcmR0c2Mgb3IgdmFyaWF0aW9ucyBiYXNl ZCBvbiBpdCAoRGF2aWQgcHJvcG9zZWQgc29tZSBDUkMtYmFzZWQgdmFyaWFudHMgZm9yDQo+IGV4 YW1wbGUpDQo+IA0KPiBEbyBJIHJlbWVtYmVyIHNvbWV0aGluZyBhYm91dCByZHRzYyBiZWluZyBt YWRlIGxlc3MgYWNjdXJhdGUgaW4gb3JkZXIgdG8NCj4gbWFrZSBpdCAoc2xpZ2h0bHkpIG1vcmUg ZGlmZmljdWx0IHRvIHVzZSBpdCB0byBtZWFzdXJlIHRpbWluZyBhdHRhY2tzPw0KDQpEbyB5b3Ug aGF2ZSBhbnkgcG9pbnRlcnMgb24gdGhpcz8gSSBkaWQgYW4gb25saW5lIHNlYXJjaCwgYnV0IGNv dWxkIG5vdCBmaW5kIGFueXRoaW5nDQpjb25jcmV0ZS4gVGhlIEludGVsIG1hbnVhbCBkb2Vzbid0 IHRhbGsgYWJvdXQgcHJlY2lzaW9uIGF0IGFsbCwgb25seSBhYm91dCBwcm90ZWN0ZWQNCm1vZGUu DQoNCj4gDQo+IElmIHRydWUsIGFuZCBpdCBhcHBsaWVzIHRvIHRoZSBrZXJuZWwgKGVnIGluIGEg Vk0pIHRoZW4gdGhpcyBpcyBwcm9iYWJseQ0KPiBhbGwgcG9pbnRsZXNzIQ0KDQpZb3UgbWVhbiBh ZGRpdGlvbmFsIGNvbnN0cnVjdGlvbnMgb24gdG9wIG9mIFRTQyBpcyBwb2ludGxlc3M/IA0KDQpC ZXN0IFJlZ2FyZHMsDQpFbGVuYS4NCg==