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=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 ADB61C433E0 for ; Tue, 16 Mar 2021 18:51:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6DE7865127 for ; Tue, 16 Mar 2021 18:51:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230256AbhCPSvL (ORCPT ); Tue, 16 Mar 2021 14:51:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52236 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240153AbhCPSuj (ORCPT ); Tue, 16 Mar 2021 14:50:39 -0400 Received: from mail-wr1-x42d.google.com (mail-wr1-x42d.google.com [IPv6:2a00:1450:4864:20::42d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC466C06174A for ; Tue, 16 Mar 2021 11:50:38 -0700 (PDT) Received: by mail-wr1-x42d.google.com with SMTP id d15so11031486wrv.5 for ; Tue, 16 Mar 2021 11:50:38 -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; bh=ZYCIwusXOn9GIbUjPY+Z1gvgGv1eCVcPoYFgPm/ZsBw=; b=PghuLEmcLXD6wtSYmtr9Asf1mywcnZil/eiZ7U/X1wOSv14YPWgKWrVsWXrVB1hskv VYlpRFINPGuL3IZI9bFlqul5iNue6ol4NzZ03u2n2hr1YUVBfUATmDri09NHWfp29/5d hBHdrPxmO2YclrwWMKLBJwWOgdbC/EKrSoMUElY4v9QciAgKuO+hcDFu6UqR9oH6RxWC vg6fauwyLboYvVFuQPAXjN9HO3RE3x3dXKHOwjwFIlkET2f6e2nzLe6uZ/9T+mxD8iKB DC2Rn9ig96MiFGTYWfIrMnLYYIeUL78vQQRmS892ohBei+G9kE7lwkOq/EqAt47sTiL4 od8A== 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; bh=ZYCIwusXOn9GIbUjPY+Z1gvgGv1eCVcPoYFgPm/ZsBw=; b=uf9J6olrZIkqOuOAMHajLDK2uJtorkhw9HuQP8G6thBt+3PMJatdQ66+Cbyy94Lbeo WvNB7adGtwdxueyTr+16DDdFtPNCF6nk+0iAFT1VWXtzXLH/P+2NDFsTNNW4/OtK6Ba/ h3+omzTscTLlTnls2GT15ZEMcEuThd6bqR2ryL+YAx2EeV5Maddt+WUXopMm/YAy5qzl +kOJi0jcUJXldhJ+KwAVoiZLMxyM193suFGMiu714neVUEc9AjRteATDFCbrN/IS2LVL sscPrNdpn8k6SSWwgCpgCnClKyA0y8SKxrmP/erCEWaOhcbeYnuEwv1ARJtRiQmSQ38O hmuw== X-Gm-Message-State: AOAM530CwvLSJDFG9W1Vu4cPlN6rAppSnMg0TxvowVwQ/dfsOagDMj6q Mei4G7F1oAWHKEGmpptf0A== X-Google-Smtp-Source: ABdhPJz23hAs8nh3LiixdzIhqWtJL+8yYO+WofDjUQWG5ej1fW8c/lVVl0QS3v0ek7DXHPMRocGRpA== X-Received: by 2002:a5d:6342:: with SMTP id b2mr405735wrw.421.1615920637509; Tue, 16 Mar 2021 11:50:37 -0700 (PDT) Received: from localhost.localdomain ([46.53.253.49]) by smtp.gmail.com with ESMTPSA id y18sm23289935wrw.39.2021.03.16.11.50.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Mar 2021 11:50:37 -0700 (PDT) Date: Tue, 16 Mar 2021 21:50:35 +0300 From: Alexey Dobriyan To: Cyrill Gorcunov Cc: linux-kernel@vger.kernel.org Subject: Re: auxv stuff (Re: [PATCH] prctl: fix PR_SET_MM_AUXV kernel stack leak) Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 15, 2021 at 09:42:47AM +0300, Cyrill Gorcunov wrote: > On Mon, Mar 15, 2021 at 09:00:00AM +0300, Alexey Dobriyan wrote: > > On Sun, Mar 14, 2021 at 02:40:05PM -0700, Linus Torvalds wrote: > > > [mm->saved_auxv] > > > > > > That's a separate issue, and I can't find it in myself to care (and > > > nobody has ever complained), but I thought I'd mention it. > > > > There is another (non-security) one. Compat 32-bit process will report > > 2 longs too many: > > Good catch! Alexey, should I address it? Or you have fixed it already? I didn't and I don't know how frankly. Something I've noticed during more important auxv rewrite.