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, URIBL_BLOCKED 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 C34CCC433E0 for ; Mon, 3 Aug 2020 08:23:24 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 2A575206E2 for ; Mon, 3 Aug 2020 08:23:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2A575206E2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=ACULAB.COM Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-19530-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 22125 invoked by uid 550); 3 Aug 2020 08:23:18 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 22093 invoked from network); 3 Aug 2020 08:23:17 -0000 X-MC-Unique: jniEonvpM6WuyKoEFdxDSQ-2 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 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=