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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=ham 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 9ED7AC4321D for ; Wed, 15 Aug 2018 16:33:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 62C4A20C09 for ; Wed, 15 Aug 2018 16:33:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="TnfqAI4C" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 62C4A20C09 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730101AbeHOT0e (ORCPT ); Wed, 15 Aug 2018 15:26:34 -0400 Received: from mail-it0-f48.google.com ([209.85.214.48]:33315 "EHLO mail-it0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729424AbeHOT0e (ORCPT ); Wed, 15 Aug 2018 15:26:34 -0400 Received: by mail-it0-f48.google.com with SMTP id d16-v6so17829480itj.0 for ; Wed, 15 Aug 2018 09:33:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=FOD4dkk5r9hxIWPW6Mp1FsWLoqAvHKhmAJliyWTxBsM=; b=TnfqAI4CPKcr9SDvH+n5ryNEeL04VUqFyU0NFolEDCsgRGHPnCRyjIcclFl4xDcMpM Xd4vJooErMC0RgqFC/CPdmnNPqIZMFuyI3k9vLzpJm8Tte1MhPARjo9eHVsfUG3WB9Nm oC/UIZlvN04+52P1yCAnVDrbvtdUl0f0ZyiNE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=FOD4dkk5r9hxIWPW6Mp1FsWLoqAvHKhmAJliyWTxBsM=; b=Oal4nFAjycSvSXSpb4/2PKb5W4T3v8QWCnfOu6RFukuTlpmCKU8VISYm9cYLyTILtN S5kGRUh7SmONWpz5S0IIoDaRiZSgZPPNJrMghaCgSBf4KcawZyXPTJ3/4OMr3VlInaAe zSOnBeNGYmmhw/QpmH+bt+tm36fC1s3lDnK1HZKl+55r3rxN/hspyIKL2cgOjUgyluv4 L7sRi8zB81bXAk6XsTmJmuhJvkpnkI9tqROWrmrgGZS6l9Kw9WOfuHLPA3nijeEPYL5m E9IsVVDvmijHb2fEyMIH4GQOenAGCeVLH1xyTiBH8fBff9nyCZKLup69r1G2HmtPbwKt 3Hxg== X-Gm-Message-State: AOUpUlF2nuXigoHhjwOffVDpPnY2sVnXIrnrgphvk55ffpPzbLcjle2D I726ygNIG6cDl1sNRQ3hkZrX3XwUqnQ0DuEfVM3Eyxk3 X-Google-Smtp-Source: AA+uWPwwvoCuzEHkUzUcVtLEcIIUIr/xKyJQhsG2xdjDB46ASOSyp8sv+re9rSqTSq7m8c3yz6Vequ3xVZ+wXGV99aY= X-Received: by 2002:a24:b211:: with SMTP id u17-v6mr18117687ite.1.1534350823200; Wed, 15 Aug 2018 09:33:43 -0700 (PDT) MIME-Version: 1.0 References: <20180814170904.GA12768@roeck-us.net> In-Reply-To: From: Linus Torvalds Date: Wed, 15 Aug 2018 09:33:32 -0700 Message-ID: Subject: Re: Build failures with gcc 4.5 and older To: David Laight Cc: Guenter Roeck , Linux Kernel Mailing List , Rik van Riel , Mike Galbraith , Dave Hansen , Andrew Morton Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 15, 2018 at 9:16 AM David Laight wrote: > > > > > But some libelf bug that is less than a year old is likely to bite people. > > See https://lkml.org/lkml/2017/9/10/186 for the libelf fix. > It isn't anything like as rare as those emails suggest. > An 'allmodconfig' build fails on a lot of object files after 4.15-rc9. Ok, but that patch that fixes it was merged a long time ago already. See commit 97dab2ae7e84 ("objtool: Fix object file corruption") So I'm a bit confused by your issue. The thing you point to from last year was literall fixed and committed to the tree in a couple of days days. > When I fell over the problem I found a few reports on the ubuntu lists > but they all just said the ubuntu version was unsupported. > > There is this patch I did https://lkml.org/lkml/2018/7/26/266 that got > no comments. > > But really something needs to be done to objtool. I think you need to make a report about the exact problem with objtool and your issue. Not on the ubuntu lists, but to Josh. Linus