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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_NEOMUTT 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 0FD66C4360F for ; Thu, 4 Apr 2019 17:16:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DCB5C206BA for ; Thu, 4 Apr 2019 17:16:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729116AbfDDRQW (ORCPT ); Thu, 4 Apr 2019 13:16:22 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43036 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728479AbfDDRQW (ORCPT ); Thu, 4 Apr 2019 13:16:22 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 24DE786678; Thu, 4 Apr 2019 17:16:22 +0000 (UTC) Received: from treble (ovpn-125-158.rdu2.redhat.com [10.10.125.158]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 96C0B80FE; Thu, 4 Apr 2019 17:16:20 +0000 (UTC) Date: Thu, 4 Apr 2019 12:16:18 -0500 From: Josh Poimboeuf To: Randy Dunlap Cc: Stephen Rothwell , Linux Next Mailing List , Linux Kernel Mailing List , Peter Zijlstra Subject: Re: linux-next: Tree for Apr 3 (objtool) Message-ID: <20190404171618.6u36y5zu3euvd4zp@treble> References: <20190403192407.13a99513@canb.auug.org.au> <20190403205305.tqqwttjytunzgtub@treble> <6a2455b9-5c02-99dc-e41c-e6b7d1c3118d@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <6a2455b9-5c02-99dc-e41c-e6b7d1c3118d@infradead.org> User-Agent: NeoMutt/20180716 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Thu, 04 Apr 2019 17:16:22 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 03, 2019 at 03:29:17PM -0700, Randy Dunlap wrote: > On 4/3/19 1:53 PM, Josh Poimboeuf wrote: > > On Wed, Apr 03, 2019 at 08:02:43AM -0700, Randy Dunlap wrote: > >> On 4/3/19 1:24 AM, Stephen Rothwell wrote: > >>> Hi all, > >>> > >>> Changes since 20190402: > >>> > >> > >> on x86_64: > >> > >> arch/x86/entry/entry_64.o: warning: objtool: .entry.text+0x909: unreachable instruction > > > > Your .o file looks odd. I can't recreate the issue when I build the > > same object. > > This (randconfig) build has tracing enabled? Could that have anything to do > with it? No, I can't see any reasonable explanation for it other than a buggy toolchain. > The randconfig file is attached. I still can't recreate with your randconfig. > > Did the issue only just now show up? Can you bisect it? What version > > of binutils are you using? > > > ld -v > GNU ld (GNU Binutils; openSUSE Leap 42.3) 2.31.1.20180828-19 > > > My build logs show it first occurred (in my randconfig builds) in > linux-next-20190204. It seems really odd. Can you do a bisect? -- Josh