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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 B8E1AC282DD for ; Fri, 10 Jan 2020 20:50:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 89A012082E for ; Fri, 10 Jan 2020 20:50:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Mvi+VRY0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726805AbgAJUuc (ORCPT ); Fri, 10 Jan 2020 15:50:32 -0500 Received: from mail-qt1-f195.google.com ([209.85.160.195]:38480 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726723AbgAJUuc (ORCPT ); Fri, 10 Jan 2020 15:50:32 -0500 Received: by mail-qt1-f195.google.com with SMTP id n15so3181384qtp.5 for ; Fri, 10 Jan 2020 12:50:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:date:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=g27tUcZAM0m6OZxjmAB5/89iWSwTrYsxjjfNa7EsAIw=; b=Mvi+VRY02DgdYL7P2WspKpHxV2ow+FLMGmUO3lyIPBdZ6kcdG6O4HVFlGhiG+9nKjt InGoNRuwiCuSQd5Ve3eiX2lfKUyZ87lrH9ALeiXGOnxgfGdiTLaU5zwdubcqXTvcsLB0 DaO/pmhX8VxVvIadinKoWa7kOkB9Y64ByED2qL3Trpztbdo8u8X1ZMDq09q8IOvJth8y JUo+juVQDjNuS4t09NlmvyPVYzae8sKRlSErb7153ubjzUQblJgGvPUjil5E1HJc4/pq jW9fCiAhtgCiQ6Tyz4WmdQy+Ys1/hKYm3kCXGXfKxq3N7A12MUCJoUIZzD0CCKSH0wj8 WOPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:date:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=g27tUcZAM0m6OZxjmAB5/89iWSwTrYsxjjfNa7EsAIw=; b=JQM9gtW8PkhWS1ojwVNODiOWHTZ1cwciLBuiC4Q0fs2HP6KucemgC50C37jTi9DhI/ XlGk5nZd2unOmJw1cUKgEq9XfUJ7/yjTfX0wfRoaozhYSVjIWUq814YMrKHrivFiEK1w JJdjGxy/Vf2SLrrE+Svix2VKCb9msRi52fNvU1oKi6yft7mw/T+Zy61Jp0fnvntk1GZS Owf98Qm6D+u3b2ueTMUpMJJDIUmbdJmEFMIg3zDbuEF06m60rZ22utMqY0clZK++d22D 0f1ZzOETsI2bjJxsYe4Y8yOQxv5zGBDGgEZjRvLMuTFqAATEIw+8czk76VEiJhRPMHYD at+g== X-Gm-Message-State: APjAAAVYS0wcTNHnP8uAACgSI/j1kH579tY8q8+7D2Bi0KxVrk8drqZQ MgN1ZEzo2mTnY+eXwbZWaa8= X-Google-Smtp-Source: APXvYqzqSVRxTWDacmijuX+jppZlqkfEqfdliItay6BDT/Jhn2/DhYxV9Ui3FPnIC+BA+I79v6S/YQ== X-Received: by 2002:ac8:3853:: with SMTP id r19mr351185qtb.69.1578689431302; Fri, 10 Jan 2020 12:50:31 -0800 (PST) Received: from rani.riverdale.lan ([2001:470:1f07:5f3::b55f]) by smtp.gmail.com with ESMTPSA id e3sm1586608qtb.65.2020.01.10.12.50.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jan 2020 12:50:30 -0800 (PST) From: Arvind Sankar X-Google-Original-From: Arvind Sankar Date: Fri, 10 Jan 2020 15:50:29 -0500 To: Borislav Petkov Cc: Arvind Sankar , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, linux-kernel@vger.kernel.org, Kees Cook , Thomas Lendacky Subject: Re: [PATCH] x86/tools/relocs: Add _etext and __end_of_kernel_reserve to S_REL Message-ID: <20200110205028.GA2012059@rani.riverdale.lan> References: <20200110202349.1881840-1-nivedita@alum.mit.edu> <20200110203828.GK19453@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200110203828.GK19453@zn.tnic> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 10, 2020 at 09:38:28PM +0100, Borislav Petkov wrote: > On Fri, Jan 10, 2020 at 03:23:49PM -0500, Arvind Sankar wrote: > > Pre-2.23 binutils makes symbols defined outside sections absolute, so > > these two symbols break the build on old linkers. > > -ENOTENOUGHINFO > > Which old linkers, how exactly do they break the build, etc etc? > > Please give exact reproduction steps. > > Thx. > binutils-2.21 and -2.22. An x86-64 defconfig will fail with Invalid absolute R_X86_64_32S relocation: _etext and after fixing that one, with Invalid absolute R_X86_64_32S relocation: __end_of_kernel_reserve Similar errors with 32-bit defconfig. Should I resend with that added to the commit message?