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 C5955C33CB7 for ; Fri, 17 Jan 2020 18:11:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A036C21835 for ; Fri, 17 Jan 2020 18:11:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="B14OnPZk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729112AbgAQSLj (ORCPT ); Fri, 17 Jan 2020 13:11:39 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:40140 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729096AbgAQSLi (ORCPT ); Fri, 17 Jan 2020 13:11:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579284697; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=QsgYM2TGG8lRq9niu1aCEnMk5zwASxNohdIB47d0fPM=; b=B14OnPZkA69YgOilBeX//8x/Dix1CZ9uWMyDqUmNl/dBaY1Bn3Y29rV3wIWS37qiZQ7tW2 2R79kzNdCQk6uOdiA9jTeNaUHItGbZ/Ajio07x8kN7TKwNikeGSdr43RXz9c3QYWJkNr9r S3t353iC9DNYxgCowhjTGmxkHDYmT5k= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-9-cuZZlEvPPxqHNMDkMEDNpQ-1; Fri, 17 Jan 2020 13:11:28 -0500 X-MC-Unique: cuZZlEvPPxqHNMDkMEDNpQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id EAEBDDB20; Fri, 17 Jan 2020 18:11:25 +0000 (UTC) Received: from treble (ovpn-123-54.rdu2.redhat.com [10.10.123.54]) by smtp.corp.redhat.com (Postfix) with ESMTPS id ED0E95D9CD; Fri, 17 Jan 2020 18:11:23 +0000 (UTC) Date: Fri, 17 Jan 2020 12:11:21 -0600 From: Josh Poimboeuf To: Randy Dunlap Cc: Andrew Morton , broonie@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-next@vger.kernel.org, mhocko@suse.cz, mm-commits@vger.kernel.org, sfr@canb.auug.org.au, Peter Zijlstra Subject: Re: mmotm 2019-12-10-19-14 uploaded (objtool: func() falls through) Message-ID: <20200117181121.3h72dajey7oticbf@treble> References: <20191211031432.iyKVQ6m9n%akpm@linux-foundation.org> <07777464-b9d8-ff1d-41d9-f62cc44f09f3@infradead.org> <20191212184859.zjj2ycfkvpcns5bk@treble> <042c6cd7-c983-03f1-6a79-5642549f57c4@infradead.org> <20191212205811.4vrrb4hou3tbiada@treble> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20191212205811.4vrrb4hou3tbiada@treble> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Thu, Dec 12, 2019 at 02:58:11PM -0600, Josh Poimboeuf wrote: > On Thu, Dec 12, 2019 at 12:21:17PM -0800, Randy Dunlap wrote: > > On 12/12/19 10:48 AM, Josh Poimboeuf wrote: > > > On Wed, Dec 11, 2019 at 08:31:08AM -0800, Randy Dunlap wrote: > > >> On 12/10/19 7:14 PM, Andrew Morton wrote: > > >>> The mm-of-the-moment snapshot 2019-12-10-19-14 has been uploaded to > > >>> > > >>> http://www.ozlabs.org/~akpm/mmotm/ > > >>> > > >>> mmotm-readme.txt says > > >>> > > >>> README for mm-of-the-moment: > > >>> > > >>> http://www.ozlabs.org/~akpm/mmotm/ > > >>> > > >>> This is a snapshot of my -mm patch queue. Uploaded at random hopefully > > >>> more than once a week. > > >>> > > >>> You will need quilt to apply these patches to the latest Linus release (5.x > > >>> or 5.x-rcY). The series file is in broken-out.tar.gz and is duplicated in > > >>> http://ozlabs.org/~akpm/mmotm/series > > >>> > > >>> The file broken-out.tar.gz contains two datestamp files: .DATE and > > >>> .DATE-yyyy-mm-dd-hh-mm-ss. Both contain the string yyyy-mm-dd-hh-mm-ss, > > >>> followed by the base kernel version against which this patch series is to > > >>> be applied. > > >> > > >> on x86_64: > > >> > > >> drivers/hwmon/f71882fg.o: warning: objtool: f71882fg_update_device() falls through to next function show_pwm_auto_point_temp_hyst() > > >> drivers/ide/ide-probe.o: warning: objtool: hwif_register_devices() falls through to next function hwif_release_dev() > > >> drivers/ide/ide-probe.o: warning: objtool: ide_host_remove() falls through to next function ide_disable_port() > > > > > > Randy, can you share the .o files? > > > > Sure. They are attached. > > These look like compiler bugs to me... execution is falling off the edge > of the functions for no apparent reason. Could potentially be triggered > by the '#define if' trace code. Randy, do you happen to have a config which triggers the above bugs? I can reduce the test cases and open a GCC bug. -- Josh