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=-2.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=unavailable 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 68A17C004D3 for ; Wed, 24 Oct 2018 13:43:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3132220832 for ; Wed, 24 Oct 2018 13:43:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="D7Qbpjfs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3132220832 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-security-module-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726426AbeJXWL6 (ORCPT ); Wed, 24 Oct 2018 18:11:58 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:37439 "EHLO mail-wr1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726414AbeJXWL6 (ORCPT ); Wed, 24 Oct 2018 18:11:58 -0400 Received: by mail-wr1-f65.google.com with SMTP id g9-v6so5658680wrq.4; Wed, 24 Oct 2018 06:43:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=dNJtO6i3Kfvf1KktXEna8GrGSbj5XeMGVArGLLH9Iwk=; b=D7Qbpjfs83TTGaTKXLLfoV9nMNNXmCTAscxOF5Z42z1oNXFMhuLoGfe1XT5+mkPX2g FyUjTyIGZJDtnwkRTezwdphbBLQ9liGuLgBA8VnDTM1SIxSQwO98/+XYpH2EaSLgUUkr rqkhrtT4T4a/khzjB4whJL9PMvLUCWXMGDiz9LxzyKYvbpoot2DLYo3F42X41rPuBVmq r1ge3kHV1J7VIjRzZ3VEmpXDlBnSrFvhP5R9tpidAmBdaQNONznHGzuekmkh4R+yOMc0 rlY47qBRQkV+VvO/5rjZulEd/5wvTbL2mRqnfmTpztn5RpPNiMe9k6mYnkOjDPM8aJOr 9/aw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=dNJtO6i3Kfvf1KktXEna8GrGSbj5XeMGVArGLLH9Iwk=; b=uLnq4YehmBAti4uW2SbJMNvR/Qpzxuw/vXOuMtTLC4bsyZi7nF1KG3Qe6Omc3l+QL0 yHzmUiQbKU4Nb2pe70r6mTd3ElEtfHRKbNo3LeAQPop3xI4w/s/bBel2f3FJpr1m3RW3 ALTImTkiTdGndDnQ7VJ52BJ9LgKWPFSWxN07F6vTrK4Lf0oFu04tw49p4lpk0aLnjHnB xlP6QafLm8KhGy4zMC9qHanUN3QUp4AuLdLtTLMf9SYokhYmsGpNWVhwnVePSIzCHmpM ObJ9hdUK85jJk5MsLtoek46xXQpnEy2U9USc4sxoWyQBxWBfgjELzTJMDSz2u8hwAsIk FyjQ== X-Gm-Message-State: AGRZ1gJuqLYxgFiQ2xZliABIw0KcQXlLlCSVv9CrFEH8nC/scCvqHg6J C4jw/JD3Khq4Cp90hopmzQ== X-Google-Smtp-Source: AJdET5fl9VwfAPxKCK3bVYvE4u89Qilo/202VZ7Wn9iu+eHOMop3IqLiin8QfIt6E62WlAHIgRTj4A== X-Received: by 2002:adf:9592:: with SMTP id p18-v6mr3145316wrp.202.1540388626661; Wed, 24 Oct 2018 06:43:46 -0700 (PDT) Received: from avx2 (nat5-minsk-pool-46-53-217-92.telecom.by. [46.53.217.92]) by smtp.gmail.com with ESMTPSA id m16sm3812393wrx.75.2018.10.24.06.43.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 24 Oct 2018 06:43:45 -0700 (PDT) Date: Wed, 24 Oct 2018 16:43:43 +0300 From: Alexey Dobriyan To: Igor Stoppa Cc: Mimi Zohar , Kees Cook , Matthew Wilcox , Dave Chinner , James Morris , Michal Hocko , kernel-hardening@lists.openwall.com, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, igor.stoppa@huawei.com, Dave Hansen , Jonathan Corbet , Laura Abbott , Greg Kroah-Hartman , Andrew Morton , Masahiro Yamada , Pekka Enberg , "Paul E. McKenney" , Lihao Liang , linux-kernel@vger.kernel.org Subject: Re: [PATCH 13/17] prmem: linked list: disable layout randomization Message-ID: <20181024134343.GA7767@avx2> References: <20181023213504.28905-1-igor.stoppa@huawei.com> <20181023213504.28905-14-igor.stoppa@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20181023213504.28905-14-igor.stoppa@huawei.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: On Wed, Oct 24, 2018 at 12:35:00AM +0300, Igor Stoppa wrote: > Some of the data structures used in list management are composed by two > pointers. Since the kernel is now configured by default to randomize the > layout of data structures soleley composed by pointers, Isn't this true for function pointers?