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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 B125AC43331 for ; Tue, 24 Mar 2020 17:53:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 87E2C206F6 for ; Tue, 24 Mar 2020 17:53:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="YpkuBmqm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727848AbgCXRxe (ORCPT ); Tue, 24 Mar 2020 13:53:34 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:37464 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727318AbgCXRxe (ORCPT ); Tue, 24 Mar 2020 13:53:34 -0400 Received: by mail-pf1-f193.google.com with SMTP id h72so7466827pfe.4 for ; Tue, 24 Mar 2020 10:53:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=ZxsdTUrUeVBSfB6rvEsxkEaFkTBJO/lH7iiBmlj/6eg=; b=YpkuBmqmv35d13reGYGHJ/SXgArEhrZkhyk+sONMPJmw+KbuGmF6diuOwKtLDfoi3N TU0nUUSy6E41+i+bhoyeN2D2mKtdTy/uBuZYO5ca/TiO+TpZA4nsvwfHRjbsg9qaJYMK 6dpZjelxFqfc5HkCmisodj64Hrqf8btwAT/as= 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=ZxsdTUrUeVBSfB6rvEsxkEaFkTBJO/lH7iiBmlj/6eg=; b=DUo6iUMeSqPrmPM3Bi6stURieMEx8/8Zoc7kO3FxrkxCrDBwjmCkM3ArZUk1WttWon CUHN6SGKvr1Sd7vEx+fcd6wVAeUIDQxz2ebzoRPYDGrLFk58wA4DAfpMNVuHpVaf6yaW qSklNgDFJ/xSVhyVbYh1v28GKNyP0v0RyIZEfs+69f2zEEMV2wzBOVHXnmkhulJwwIEa ZHYbf34WEWLb4KZbpEiqFnTFs3MCSZuDwWZvN8OILT90G3xPdOjhirTPn4z7QpypP9pL IorGkrkPSsB7CelknQ6RpWhLMGz7b7OTwbRUi36LRfmIKw6Mk4Mfvw8rzGt9ur7dCE2E OWpg== X-Gm-Message-State: ANhLgQ077duJMfzM2B3PUGitRbddyfQsCTl2mI45aPDNjCvMC2LLTZr0 G3dOeiEqnrm1MawebB0YfdnUOQ== X-Google-Smtp-Source: ADFU+vuW3LeLIp5eiH8Tf7XqO9zZW1F5sw0Q2LjIaG/VPlcO2qjQ4T5kSNKnTaLwFb8eB8uGq3Pzhg== X-Received: by 2002:aa7:95ae:: with SMTP id a14mr29129311pfk.164.1585072412906; Tue, 24 Mar 2020 10:53:32 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id v123sm16600631pfv.146.2020.03.24.10.53.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2020 10:53:32 -0700 (PDT) Date: Tue, 24 Mar 2020 10:53:31 -0700 From: Kees Cook To: Linus Torvalds Cc: Borislav Petkov , "Jason A. Donenfeld" , Masahiro Yamada , Arvind Sankar , "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , X86 ML , Linux Kernel Mailing List , Thomas Lendacky , Mauro Rossi , Michael Matz Subject: Re: [PATCH] Documentation/changes: Raise minimum supported binutils version to 2.23 Message-ID: <202003241051.D2CF0F0@keescook> References: <20200115002131.GA3258770@rani.riverdale.lan> <20200115122458.GB20975@zn.tnic> <20200316160259.GN26126@zn.tnic> <20200323204454.GA2611336@zx2c4.com> <202003231350.7D35351@keescook> <20200324091437.GB22931@zn.tnic> <20200324162843.GE22931@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 24, 2020 at 09:37:13AM -0700, Linus Torvalds wrote: > On Tue, Mar 24, 2020 at 9:28 AM Borislav Petkov wrote: > > > > Are you or Kees going to deal with any fallout from upping the binutils > > version, rushed in in the last week before the merge window? > > I think it's ok. It's not going to cause any _subtle_ failures, it's > going to cause very clear "oh, now it doesn't build" errors. > > No? > > And binutils 2.23 is what, 7+ years old by now and apparently had > known failure cases too. > > But if there are silent and subtle failures, that might be a reason to > be careful. Are there? FWIW, I have plenty of other hills to die on, so I have no urgency on this change. I actually thought it had already happened, since it was brought up a while ago. :) I am just excited to see it happen since it unblocks other work I've been touching. As long as it's "eventually", I don't care when. :) -- Kees Cook