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=-0.8 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 3EF8CC64EB8 for ; Thu, 4 Oct 2018 11:00:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E2FA621479 for ; Thu, 4 Oct 2018 11:00:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E2FA621479 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=molgen.mpg.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727310AbeJDRxa (ORCPT ); Thu, 4 Oct 2018 13:53:30 -0400 Received: from mx3.molgen.mpg.de ([141.14.17.11]:49393 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727131AbeJDRxa (ORCPT ); Thu, 4 Oct 2018 13:53:30 -0400 Received: from keineahnung.molgen.mpg.de (keineahnung.molgen.mpg.de [141.14.17.193]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: pmenzel) by mx.molgen.mpg.de (Postfix) with ESMTPSA id 3DAA92012D0DC1; Thu, 4 Oct 2018 13:00:42 +0200 (CEST) Subject: Re: x86/mm: Found insecure W+X mapping at address (ptrval)/0xc00a0000 To: Borislav Petkov Cc: =?UTF-8?B?SsO2cmcgUsO2ZGVs?= , Thomas Gleixner , linux-mm@kvack.org, x86@kernel.org, LKML References: <0922cc1b-ed51-06e9-df81-57fd5aa8e7de@molgen.mpg.de> <20181003212255.GB28361@zn.tnic> <20181004080321.GA3630@8bytes.org> <20181004081429.GB1864@zn.tnic> <6cbb9135-7e89-748f-1d55-ac105a9f8091@molgen.mpg.de> <20181004084946.GD1864@zn.tnic> <20181004105443.GH1864@zn.tnic> From: Paul Menzel Message-ID: Date: Thu, 4 Oct 2018 13:00:42 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20181004105443.GH1864@zn.tnic> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms020309040006070509070806" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a cryptographically signed message in MIME format. --------------ms020309040006070509070806 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable Dear Borislav, On 10/04/18 12:54, Borislav Petkov wrote: > On Thu, Oct 04, 2018 at 10:59:18AM +0200, Paul Menzel wrote: >> I meant just the test you did. >=20 > https://lkml.kernel.org/r/20181003212255.GB28361@zn.tnic I see. But there you write, the machine does boot. While here you write, it did not. > and I did try marking the ISA range RO in mark_rodata_ro() but the > machine wouldn't boot after. >> The SSD is also used in the Lenovo X60 and T60, which are >> 32-bit systems. >=20 > And what exactly is the problem when you access it on a 64-bit OS? Sorry I do not understand the question. I carry the SSD drive with me, and connect it to the ASRock E350M1 (64-bit) or to the Lenovo X60 laptop and boot from it from both systems. 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