Received: by 2002:ac0:a582:0:0:0:0:0 with SMTP id m2-v6csp453401imm; Wed, 3 Oct 2018 20:13:25 -0700 (PDT) X-Google-Smtp-Source: ACcGV60Md+tVCUsFOHCNiELiSG7UGz88/rNUDAMEPRTh77s+15UGILQL9r0hGRvzdYuxIBjrmUrh X-Received: by 2002:a65:52c1:: with SMTP id z1-v6mr3870802pgp.65.1538622805646; Wed, 03 Oct 2018 20:13:25 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1538622805; cv=none; d=google.com; s=arc-20160816; b=cA29A+HBwu14ln3VsvAxJqqDNtZ74M7ctUqCgbltFq0FA2CtAX97MMh3ADB9rAgTdp 9iHVXB12ze9pt5EJC6fxxsN87MlHcrAeAdIwsY9lR9TasXps3+bO8CX9Oo2vAX2rFqCO z3QD5xWGnDlX5Cl0elrU1KVkLp8fWtk1notFk25xa0dea8Qddbf+CuuXw1y8zQkToYb7 pxUypiuErh0S12chTLubWSjGXZVasbyNmqA5R+Gk/SagZpp8D5IddUcgrQut8VSHYr60 A516jfsjFIduvxyPzbZq8uPtWG/QzuHpzoK6N3//c4YHi60UQ46L/biOKuhIOUWZYECT yC1g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject; bh=ee9+TEK4zRWSFMcrEeBu5VIpsQwuCrI6nB01lXRx+HU=; b=hvULTuJj8lavzMvwnTwY+pztErWZODVS2kKwyEoHJDIgyIzfraZ0Du80eeDNTBF69t cfoJ/c5ViWnM1LC0Sguy8u79V6m4StAiWRmaMs3A8JrqhHJcdKF+I0E2f7OKFWncGy0p VXDEqBepL/rbvpf9msqEyfDeNi3gkwYvO8kF9bSWl4WM6eSw1oVrK+zm9XI+m3E7E1Fs ejqaWIXrlHmDq18CHoViRNdSUYVSEJ9FpuXJOcTXSzr5cQj5uz5YRCgqkIJFh7Jdiwfh aHyVODksj9F7viy5UHcbxeII4JrklQaDg2Kzh2CZZMu6i+CSL0oc6PxSv7KWGQlQCa2f hPqA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id j7-v6si3613966plt.11.2018.10.03.20.13.10; Wed, 03 Oct 2018 20:13:25 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727469AbeJDKC3 (ORCPT + 99 others); Thu, 4 Oct 2018 06:02:29 -0400 Received: from mx3.molgen.mpg.de ([141.14.17.11]:35175 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727439AbeJDKC3 (ORCPT ); Thu, 4 Oct 2018 06:02:29 -0400 Received: from [192.168.0.4] (ip5f5bd26f.dynamic.kabel-deutschland.de [95.91.210.111]) (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 8952F2012D0DC1; Thu, 4 Oct 2018 05:11:17 +0200 (CEST) Subject: Re: x86/mm: Found insecure W+X mapping at address (ptrval)/0xc00a0000 To: Borislav Petkov , Thomas Gleixner Cc: linux-mm@kvack.org, x86@kernel.org, lkml References: <0922cc1b-ed51-06e9-df81-57fd5aa8e7de@molgen.mpg.de> <20181003212255.GB28361@zn.tnic> From: Paul Menzel Message-ID: <18bf13a4-2853-358e-594f-27533193757c@molgen.mpg.de> Date: Thu, 4 Oct 2018 05:11:17 +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: <20181003212255.GB28361@zn.tnic> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dear Borislav, Am 03.10.2018 um 23:22 schrieb Borislav Petkov: > On Fri, Sep 28, 2018 at 04:55:19PM +0200, Thomas Gleixner wrote: >> Sorry for the delay and thanks for the data. A quick diff did not reveal >> anything obvious. I'll have a closer look and we probably need more (other) >> information to nail that down. > > Just a brain dump of what I've found out so far. Thank you for looking into this. On what board are you able to reproduce this? Do you build for 32-bit or 64-bit? Kind regards, Paul