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 154EDC2D0CA for ; Thu, 12 Dec 2019 20:58:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DD84522B48 for ; Thu, 12 Dec 2019 20:58:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="DqN9lB24" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730953AbfLLU6W (ORCPT ); Thu, 12 Dec 2019 15:58:22 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:20059 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730871AbfLLU6V (ORCPT ); Thu, 12 Dec 2019 15:58:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576184300; 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=xFBksdHVlqSH2UyhAzKrEfmaK2aji1YTG0bwajfDZLs=; b=DqN9lB24EhqUvYcjtHsukTTHIaqRiE7PrVMXWrL9vRcyBdGPM/ZeDT+YceQV0Uj3lyHbOe ylLJDvZho8Yv0vwyWdR3bftdW75Vlnr/HAKh8cVsebiD2fIPeWeb7b+331/V/0Jq9ZmxlJ UNngXEkX2G/V0EBMSJLXveDwIAdra44= 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-286-b45Qw4c8MFKlLP0zkn1p-w-1; Thu, 12 Dec 2019 15:58:16 -0500 X-MC-Unique: b45Qw4c8MFKlLP0zkn1p-w-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D9159DB78; Thu, 12 Dec 2019 20:58:14 +0000 (UTC) Received: from treble (ovpn-123-178.rdu2.redhat.com [10.10.123.178]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 785E95C548; Thu, 12 Dec 2019 20:58:13 +0000 (UTC) Date: Thu, 12 Dec 2019 14:58:11 -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: <20191212205811.4vrrb4hou3tbiada@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> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <042c6cd7-c983-03f1-6a79-5642549f57c4@infradead.org> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. -- Josh