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=-4.0 required=3.0 tests=BAYES_00, 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 8F6C7C433E3 for ; Mon, 3 Aug 2020 16:57:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 734E9207DF for ; Mon, 3 Aug 2020 16:57:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727895AbgHCQ5w (ORCPT ); Mon, 3 Aug 2020 12:57:52 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:37001 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726806AbgHCQ5v (ORCPT ); Mon, 3 Aug 2020 12:57:51 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-167-AfxWu5hnN66AhufCIfqZ2Q-1; Mon, 03 Aug 2020 17:57:48 +0100 X-MC-Unique: AfxWu5hnN66AhufCIfqZ2Q-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Mon, 3 Aug 2020 17:57:47 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Mon, 3 Aug 2020 17:57:47 +0100 From: David Laight To: "'Madhavan T. Venkataraman'" , "'Mark Rutland'" CC: Andy Lutomirski , Kernel Hardening , Linux API , linux-arm-kernel , Linux FS Devel , linux-integrity , LKML , "LSM List" , Oleg Nesterov , X86 ML Subject: RE: [PATCH v1 0/4] [RFC] Implement Trampoline File Descriptor Thread-Topic: [PATCH v1 0/4] [RFC] Implement Trampoline File Descriptor Thread-Index: AQHWZ2jYT+e4gDrzGEmP/30MMvDTCqkmD9qggABvyICAAB4gEA== Date: Mon, 3 Aug 2020 16:57:47 +0000 Message-ID: References: <20200728131050.24443-1-madvenka@linux.microsoft.com> <6540b4b7-3f70-adbf-c922-43886599713a@linux.microsoft.com> <46a1adef-65f0-bd5e-0b17-54856fb7e7ee@linux.microsoft.com> <20200731183146.GD67415@C02TD0UTHF1T.local> <7fdc102e-75ea-6d91-d2a3-7fe8c91802ce@linux.microsoft.com> In-Reply-To: <7fdc102e-75ea-6d91-d2a3-7fe8c91802ce@linux.microsoft.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: RnJvbTogTWFkaGF2YW4gVC4gVmVua2F0YXJhbWFuDQo+IFNlbnQ6IDAzIEF1Z3VzdCAyMDIwIDE3 OjAzDQo+IA0KPiBPbiA4LzMvMjAgMzoyNyBBTSwgRGF2aWQgTGFpZ2h0IHdyb3RlOg0KPiA+IEZy b206IE1hcmsgUnV0bGFuZA0KPiA+PiBTZW50OiAzMSBKdWx5IDIwMjAgMTk6MzINCj4gPiAuLi4N Cj4gPj4+IEl0IHJlcXVpcmVzIFBDLXJlbGF0aXZlIGRhdGEgcmVmZXJlbmNlcy4gSSBoYXZlIG5v dCB3b3JrZWQgb24gYWxsIGFyY2hpdGVjdHVyZXMuDQo+ID4+PiBTbywgSSBuZWVkIHRvIHN0dWR5 IHRoaXMuIEJ1dCBkbyBhbGwgSVNBcyBzdXBwb3J0IFBDLXJlbGF0aXZlIGRhdGEgcmVmZXJlbmNl cz8NCj4gPj4gTm90IGFsbCBkbywgYnV0IHByZXR0eSBtdWNoIGFueSByZWNlbnQgSVNBIHdpbGwg YXMgaXQncyBhIHByYWN0aWNhbA0KPiA+PiBuZWNlc3NpdHkgZm9yIGZhc3QgcG9zaXRpb24taW5k ZXBlbmRlbnQgY29kZS4NCj4gPiBpMzg2IGhhcyBuZWl0aGVyIFBDLXJlbGF0aXZlIGFkZHJlc3Np bmcgbm9yIG1vdmVzIGZyb20gJXBjLg0KPiA+IFRoZSBjcHUgYXJjaGl0ZWN0dXJlIGtub3dzIHRo YXQgdGhlIHNlcXVlbmNlOg0KPiA+IAljYWxsCTFmDQo+ID4gMToJcG9wCSVyZWcNCj4gPiBpcyB1 c2VkIHRvIGdldCB0aGUgJXBjIHZhbHVlIHNvIGlzIHRyZWF0ZWQgc3BlY2lhbGx5IHNvIHRoYXQN Cj4gPiBpdCBkb2Vzbid0ICd0cmFzaCcgdGhlIHJldHVybiBzdGFjay4NCj4gPg0KPiA+IFNvIFBJ QyBjb2RlIGlzbid0IHRvbyBiYWQsIGJ1dCB5b3UgaGF2ZSB0byB1c2UgdGhlIGNvcnJlY3QNCj4g PiBzZXF1ZW5jZS4NCj4gDQo+IElzIHRoYXQgdHJ1ZSBvbmx5IGZvciAzMi1iaXQgc3lzdGVtcyBv bmx5PyBJIHRob3VnaHQgUklQLXJlbGF0aXZlIGFkZHJlc3Npbmcgd2FzDQo+IGludHJvZHVjZWQg aW4gNjQtYml0IG1vZGUuIFBsZWFzZSBjb25maXJtLg0KDQpJIHNhaWQgaTM4NiBub3QgYW1kNjQg b3IgeDg2LTY0Lg0KDQpTbyB5ZXMsIDY0Yml0IGNvZGUgaGFzIFBDLXJlbGF0aXZlIGFkZHJlc3Np bmcuDQpCdXQgSSdtIHByZXR0eSBzdXJlIGl0IGhhcyBubyBvdGhlciB3YXkgdG8gZ2V0IHRoZSBQ QyBpdHNlbGYNCmV4Y2VwdCB1c2luZyBjYWxsIC0gY2VydGFpbmx5IG5vdGhpbmcgaW4gdGhlICd1 c3VhbCcgaW5zdHJ1Y3Rpb25zLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExh a2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQs IFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K