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 B2A9DC433E0 for ; Mon, 3 Aug 2020 08:23:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 94E32206E2 for ; Mon, 3 Aug 2020 08:23:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725958AbgHCIXI (ORCPT ); Mon, 3 Aug 2020 04:23:08 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:42776 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725861AbgHCIXI (ORCPT ); Mon, 3 Aug 2020 04:23:08 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mtapsc-1-jniEonvpM6WuyKoEFdxDSQ-2; Mon, 03 Aug 2020 09:23:04 +0100 X-MC-Unique: jniEonvpM6WuyKoEFdxDSQ-2 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 09:23:03 +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 09:23:03 +0100 From: David Laight To: "'Madhavan T. Venkataraman'" , "Andy Lutomirski" CC: 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: AQHWaP5tgOpJhgITEEScB0GhgJrbRKkmC0zQ Date: Mon, 3 Aug 2020 08:23:03 +0000 Message-ID: References: <20200728131050.24443-1-madvenka@linux.microsoft.com> <3b916198-3a98-bd19-9a1c-f2d8d44febe8@linux.microsoft.com> In-Reply-To: <3b916198-3a98-bd19-9a1c-f2d8d44febe8@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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogTWFkaGF2YW4gVC4gVmVua2F0YXJhbWFuDQo+IFNlbnQ6IDAyIEF1Z3VzdCAyMDIwIDE5 OjU1DQo+IFRvOiBBbmR5IEx1dG9taXJza2kgPGx1dG9Aa2VybmVsLm9yZz4NCj4gQ2M6IEtlcm5l bCBIYXJkZW5pbmcgPGtlcm5lbC1oYXJkZW5pbmdAbGlzdHMub3BlbndhbGwuY29tPjsgTGludXgg QVBJIDxsaW51eC1hcGlAdmdlci5rZXJuZWwub3JnPjsNCj4gbGludXgtYXJtLWtlcm5lbCA8bGlu dXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnPjsgTGludXggRlMgRGV2ZWwgPGxpbnV4 LQ0KPiBmc2RldmVsQHZnZXIua2VybmVsLm9yZz47IGxpbnV4LWludGVncml0eSA8bGludXgtaW50 ZWdyaXR5QHZnZXIua2VybmVsLm9yZz47IExLTUwgPGxpbnV4LQ0KPiBrZXJuZWxAdmdlci5rZXJu ZWwub3JnPjsgTFNNIExpc3QgPGxpbnV4LXNlY3VyaXR5LW1vZHVsZUB2Z2VyLmtlcm5lbC5vcmc+ OyBPbGVnIE5lc3Rlcm92DQo+IDxvbGVnQHJlZGhhdC5jb20+OyBYODYgTUwgPHg4NkBrZXJuZWwu b3JnPg0KPiBTdWJqZWN0OiBSZTogW1BBVENIIHYxIDAvNF0gW1JGQ10gSW1wbGVtZW50IFRyYW1w b2xpbmUgRmlsZSBEZXNjcmlwdG9yDQo+IA0KPiBNb3JlIHJlc3BvbnNlcyBpbmxpbmUuLg0KPiAN Cj4gT24gNy8yOC8yMCAxMjozMSBQTSwgQW5keSBMdXRvbWlyc2tpIHdyb3RlOg0KPiA+PiBPbiBK dWwgMjgsIDIwMjAsIGF0IDY6MTEgQU0sIG1hZHZlbmthQGxpbnV4Lm1pY3Jvc29mdC5jb20gd3Jv dGU6DQo+ID4+DQo+ID4+IO+7v0Zyb206ICJNYWRoYXZhbiBULiBWZW5rYXRhcmFtYW4iIDxtYWR2 ZW5rYUBsaW51eC5taWNyb3NvZnQuY29tPg0KPiA+Pg0KPiA+DQo+ID4gMi4gVXNlIGV4aXN0aW5n IGtlcm5lbCBmdW5jdGlvbmFsaXR5LiAgUmFpc2UgYSBzaWduYWwsIG1vZGlmeSB0aGUNCj4gPiBz dGF0ZSwgYW5kIHJldHVybiBmcm9tIHRoZSBzaWduYWwuICBUaGlzIGlzIHZlcnkgZmxleGlibGUg YW5kIG1heSBub3QNCj4gPiBiZSBhbGwgdGhhdCBtdWNoIHNsb3dlciB0aGFuIHRyYW1wZmQuDQo+ IA0KPiBMZXQgbWUgdW5kZXJzdGFuZCB0aGlzLiBZb3UgYXJlIHNheWluZyB0aGF0IHRoZSB0cmFt cG9saW5lIGNvZGUNCj4gd291bGQgcmFpc2UgYSBzaWduYWwgYW5kLCBpbiB0aGUgc2lnbmFsIGhh bmRsZXIsIHNldCB1cCB0aGUgY29udGV4dA0KPiBzbyB0aGF0IHdoZW4gdGhlIHNpZ25hbCBoYW5k bGVyIHJldHVybnMsIHdlIGVuZCB1cCBpbiB0aGUgdGFyZ2V0DQo+IGZ1bmN0aW9uIHdpdGggdGhl IGNvbnRleHQgY29ycmVjdGx5IHNldCB1cC4gQW5kLCB0aGlzIHRyYW1wb2xpbmUgY29kZQ0KPiBj YW4gYmUgZ2VuZXJhdGVkIHN0YXRpY2FsbHkgYXQgYnVpbGQgdGltZSBzbyB0aGF0IHRoZXJlIGFy ZSBubw0KPiBzZWN1cml0eSBpc3N1ZXMgdXNpbmcgaXQuDQo+IA0KPiBIYXZlIEkgdW5kZXJzdG9v ZCB5b3VyIHN1Z2dlc3Rpb24gY29ycmVjdGx5Pw0KDQpJIHdhcyB0aGlua2luZyB0aGF0IHlvdSdk IGp1c3QgbGV0IHRoZSAnbm90IGV4ZWN1dGFibGUnIHBhZ2UgZmF1bHQNCnNpZ25hbCBoYXBwZW4g KFNJR1NFR1Y/KSB3aGVuIHRoZSBjb2RlIGp1bXBzIHRvIG9uLXN0YWNrIHRyYW1wb2xpbmUNCmlz IGV4ZWN1dGVkLg0KDQpUaGUgdXNlciBzaWduYWwgaGFuZGxlciBjYW4gdGhlbiBkZWNvZGUgdGhl IGZhdWx0aW5nIGluc3RydWN0aW9uDQphbmQsIGlmIGl0IG1hdGNoZXMgdGhlIGV4cGVjdGVkIG9u LXN0YWNrIHRyYW1wb2xpbmUsIG1vZGlmeSB0aGUNCnNhdmVkIHJlZ2lzdGVycyBiZWZvcmUgcmV0 dXJuaW5nIGZyb20gdGhlIHNpZ25hbC4NCg0KTm8ga2VybmVsIGNoYW5nZXMgYW5kIGFsbCB5b3Ug bmVlZCB0byBhZGQgdG8gdGhlIHByb2dyYW0gaXMNCmFuIGFyY2hpdGVjdHVyZS1kZXBlbmRhbnQg c2lnbmFsIGhhbmRsZXIuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNp ZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsN ClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo= 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,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 EBCF8C433DF for ; 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Venkataraman'" , "Andy Lutomirski" Subject: RE: [PATCH v1 0/4] [RFC] Implement Trampoline File Descriptor Thread-Topic: [PATCH v1 0/4] [RFC] Implement Trampoline File Descriptor Thread-Index: AQHWaP5tgOpJhgITEEScB0GhgJrbRKkmC0zQ Date: Mon, 3 Aug 2020 08:23:03 +0000 Message-ID: References: <20200728131050.24443-1-madvenka@linux.microsoft.com> <3b916198-3a98-bd19-9a1c-f2d8d44febe8@linux.microsoft.com> In-Reply-To: <3b916198-3a98-bd19-9a1c-f2d8d44febe8@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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200803_042308_670748_734C708E X-CRM114-Status: GOOD ( 17.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kernel Hardening , Linux API , X86 ML , LKML , Oleg Nesterov , LSM List , Linux FS Devel , linux-integrity , linux-arm-kernel Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org RnJvbTogTWFkaGF2YW4gVC4gVmVua2F0YXJhbWFuDQo+IFNlbnQ6IDAyIEF1Z3VzdCAyMDIwIDE5 OjU1DQo+IFRvOiBBbmR5IEx1dG9taXJza2kgPGx1dG9Aa2VybmVsLm9yZz4NCj4gQ2M6IEtlcm5l bCBIYXJkZW5pbmcgPGtlcm5lbC1oYXJkZW5pbmdAbGlzdHMub3BlbndhbGwuY29tPjsgTGludXgg QVBJIDxsaW51eC1hcGlAdmdlci5rZXJuZWwub3JnPjsNCj4gbGludXgtYXJtLWtlcm5lbCA8bGlu dXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnPjsgTGludXggRlMgRGV2ZWwgPGxpbnV4 LQ0KPiBmc2RldmVsQHZnZXIua2VybmVsLm9yZz47IGxpbnV4LWludGVncml0eSA8bGludXgtaW50 ZWdyaXR5QHZnZXIua2VybmVsLm9yZz47IExLTUwgPGxpbnV4LQ0KPiBrZXJuZWxAdmdlci5rZXJu ZWwub3JnPjsgTFNNIExpc3QgPGxpbnV4LXNlY3VyaXR5LW1vZHVsZUB2Z2VyLmtlcm5lbC5vcmc+ OyBPbGVnIE5lc3Rlcm92DQo+IDxvbGVnQHJlZGhhdC5jb20+OyBYODYgTUwgPHg4NkBrZXJuZWwu b3JnPg0KPiBTdWJqZWN0OiBSZTogW1BBVENIIHYxIDAvNF0gW1JGQ10gSW1wbGVtZW50IFRyYW1w b2xpbmUgRmlsZSBEZXNjcmlwdG9yDQo+IA0KPiBNb3JlIHJlc3BvbnNlcyBpbmxpbmUuLg0KPiAN Cj4gT24gNy8yOC8yMCAxMjozMSBQTSwgQW5keSBMdXRvbWlyc2tpIHdyb3RlOg0KPiA+PiBPbiBK dWwgMjgsIDIwMjAsIGF0IDY6MTEgQU0sIG1hZHZlbmthQGxpbnV4Lm1pY3Jvc29mdC5jb20gd3Jv dGU6DQo+ID4+DQo+ID4+IO+7v0Zyb206ICJNYWRoYXZhbiBULiBWZW5rYXRhcmFtYW4iIDxtYWR2 ZW5rYUBsaW51eC5taWNyb3NvZnQuY29tPg0KPiA+Pg0KPiA+DQo+ID4gMi4gVXNlIGV4aXN0aW5n IGtlcm5lbCBmdW5jdGlvbmFsaXR5LiAgUmFpc2UgYSBzaWduYWwsIG1vZGlmeSB0aGUNCj4gPiBz dGF0ZSwgYW5kIHJldHVybiBmcm9tIHRoZSBzaWduYWwuICBUaGlzIGlzIHZlcnkgZmxleGlibGUg YW5kIG1heSBub3QNCj4gPiBiZSBhbGwgdGhhdCBtdWNoIHNsb3dlciB0aGFuIHRyYW1wZmQuDQo+ IA0KPiBMZXQgbWUgdW5kZXJzdGFuZCB0aGlzLiBZb3UgYXJlIHNheWluZyB0aGF0IHRoZSB0cmFt cG9saW5lIGNvZGUNCj4gd291bGQgcmFpc2UgYSBzaWduYWwgYW5kLCBpbiB0aGUgc2lnbmFsIGhh bmRsZXIsIHNldCB1cCB0aGUgY29udGV4dA0KPiBzbyB0aGF0IHdoZW4gdGhlIHNpZ25hbCBoYW5k bGVyIHJldHVybnMsIHdlIGVuZCB1cCBpbiB0aGUgdGFyZ2V0DQo+IGZ1bmN0aW9uIHdpdGggdGhl IGNvbnRleHQgY29ycmVjdGx5IHNldCB1cC4gQW5kLCB0aGlzIHRyYW1wb2xpbmUgY29kZQ0KPiBj YW4gYmUgZ2VuZXJhdGVkIHN0YXRpY2FsbHkgYXQgYnVpbGQgdGltZSBzbyB0aGF0IHRoZXJlIGFy ZSBubw0KPiBzZWN1cml0eSBpc3N1ZXMgdXNpbmcgaXQuDQo+IA0KPiBIYXZlIEkgdW5kZXJzdG9v ZCB5b3VyIHN1Z2dlc3Rpb24gY29ycmVjdGx5Pw0KDQpJIHdhcyB0aGlua2luZyB0aGF0IHlvdSdk IGp1c3QgbGV0IHRoZSAnbm90IGV4ZWN1dGFibGUnIHBhZ2UgZmF1bHQNCnNpZ25hbCBoYXBwZW4g KFNJR1NFR1Y/KSB3aGVuIHRoZSBjb2RlIGp1bXBzIHRvIG9uLXN0YWNrIHRyYW1wb2xpbmUNCmlz IGV4ZWN1dGVkLg0KDQpUaGUgdXNlciBzaWduYWwgaGFuZGxlciBjYW4gdGhlbiBkZWNvZGUgdGhl IGZhdWx0aW5nIGluc3RydWN0aW9uDQphbmQsIGlmIGl0IG1hdGNoZXMgdGhlIGV4cGVjdGVkIG9u LXN0YWNrIHRyYW1wb2xpbmUsIG1vZGlmeSB0aGUNCnNhdmVkIHJlZ2lzdGVycyBiZWZvcmUgcmV0 dXJuaW5nIGZyb20gdGhlIHNpZ25hbC4NCg0KTm8ga2VybmVsIGNoYW5nZXMgYW5kIGFsbCB5b3Ug bmVlZCB0byBhZGQgdG8gdGhlIHByb2dyYW0gaXMNCmFuIGFyY2hpdGVjdHVyZS1kZXBlbmRhbnQg c2lnbmFsIGhhbmRsZXIuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNp ZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsN ClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdAps aW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVh ZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==