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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 917C5C4332F for ; Thu, 24 Feb 2022 09:12:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232755AbiBXJNZ (ORCPT ); Thu, 24 Feb 2022 04:13:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38544 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231809AbiBXJNY (ORCPT ); Thu, 24 Feb 2022 04:13:24 -0500 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.86.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 04A9D106B12 for ; Thu, 24 Feb 2022 01:12:54 -0800 (PST) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-135-AAav-_ENONazwu5nYMLlXw-1; Thu, 24 Feb 2022 09:12:51 +0000 X-MC-Unique: AAav-_ENONazwu5nYMLlXw-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.28; Thu, 24 Feb 2022 09:12:51 +0000 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.028; Thu, 24 Feb 2022 09:12:51 +0000 From: David Laight To: 'Geert Uytterhoeven' , Kees Cook CC: linux-m68k , Linux Kernel Mailing List , "linux-hardening@vger.kernel.org" Subject: RE: [PATCH] m68k: Implement "current_stack_pointer" Thread-Topic: [PATCH] m68k: Implement "current_stack_pointer" Thread-Index: AQHYKVzdWGzmeUZEQEqpz/PmAjDYBqyiaMrQ Date: Thu, 24 Feb 2022 09:12:51 +0000 Message-ID: References: <20220224060448.1856091-1-keescook@chromium.org> In-Reply-To: Accept-Language: en-GB, 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-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-m68k@vger.kernel.org RnJvbTogR2VlcnQgVXl0dGVyaG9ldmVuDQo+IFNlbnQ6IDI0IEZlYnJ1YXJ5IDIwMjIgMDg6NTkN Ci4uLg0KPiA+ICtyZWdpc3RlciB1bnNpZ25lZCBsb25nIGN1cnJlbnRfc3RhY2tfcG9pbnRlciBf X2FzbV9fKCJzcCIpOw0KPiANCj4gSSBkb24ndCBrbm93IHdoYXQgSEFSREVORURfVVNFUkNPUFkg ZG9lcywgc28gSSBkb24ndCBrbm93IGlmIHlvdSBuZWVkDQo+ICJ1c3AiIChzZWUgcmR1c3AoKSkg b3IgInNwIj8NCg0KSEFSREVORURfVVNFUkNPUFkgc2lnbmlmaWNhbnRseSBzbG93cyBkb3duIHNv bWUgc3lzdGVtcyBjYWxscw0KKGVzcGVjaWFsbHkgdGhpbmdzIGxpa2Ugc2VuZG1zZygpKSBieSB0 cnlpbmcgdG8gcnVuLXRpbWUgdmVyaWZ5DQp0aGF0IHRoZSBrZXJuZWwgYnVmZmVyIGRvZXNuJ3Qg b3ZlcnJ1biBhIHN0YWNrIGZyYW1lIG9yIGttYWxsb2MoKWVkDQpidWZmZXIuDQoNCkkndmUgZ290 IG1lYXN1cmFibGUgaW1wcm92ZW1lbnRzIGJ5IGVpdGhlciB1c2luZyBfX2NvcHlfdG8vZnJvbV91 c2VyKCkNCih3aGljaCBza2lwcyB0aGUgdGVzdHMpIG9yIHVzZXJfYWNjZXNzX2JlZ2luKCkgYW5k IF9fZ2V0X3VzZXIoKS4NCg0KQXQgdGhlIG1vbWVudCB0aGUgY29kZSBmb3IgcmVhZGluZyBhIGNv bXBhdCBpb3ZlY1tdIGlzIGFjdHVhbGx5DQpmYXN0ZXIgdGhhbiB0aGF0IGZvciBhIG5hdGl2ZSBv bmUhDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkg Um9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlv biBObzogMTM5NzM4NiAoV2FsZXMpDQo=