Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3D21C433EF for ; Tue, 14 Dec 2021 17:29:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236460AbhLNR3y (ORCPT ); Tue, 14 Dec 2021 12:29:54 -0500 Received: from out02.mta.xmission.com ([166.70.13.232]:56336 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233666AbhLNR3x (ORCPT ); Tue, 14 Dec 2021 12:29:53 -0500 Received: from in02.mta.xmission.com ([166.70.13.52]:58034) by out02.mta.xmission.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1mxBcd-008v9o-8i; Tue, 14 Dec 2021 10:29:51 -0700 Received: from ip68-227-160-95.om.om.cox.net ([68.227.160.95]:57450 helo=email.froward.int.ebiederm.org.xmission.com) by in02.mta.xmission.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1mxBcc-00FFmx-8Q; Tue, 14 Dec 2021 10:29:50 -0700 From: ebiederm@xmission.com (Eric W. Biederman) To: kernel test robot Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org In-Reply-To: <202112140949.Uq5sFKR1-lkp@intel.com> (kernel test robot's message of "Tue, 14 Dec 2021 10:03:44 +0800") References: <202112140949.Uq5sFKR1-lkp@intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) Date: Tue, 14 Dec 2021 11:29:05 -0600 Message-ID: <87k0g7t7ry.fsf@email.froward.int.ebiederm.org> MIME-Version: 1.0 Content-Type: text/plain X-XM-SPF: eid=1mxBcc-00FFmx-8Q;;;mid=<87k0g7t7ry.fsf@email.froward.int.ebiederm.org>;;;hst=in02.mta.xmission.com;;;ip=68.227.160.95;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX19h0VNo5s8nXykDpXipJKp9T2J51HuZjQY= X-SA-Exim-Connect-IP: 68.227.160.95 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: Re: [ebiederm-user-namespace:signal-for-v5.17 4/12] arch/x86/kernel/dumpstack.o: warning: objtool: oops_end() falls through to next function show_opcodes() X-SA-Exim-Version: 4.2.1 (built Sat, 08 Feb 2020 21:53:50 +0000) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org kernel test robot writes: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git signal-for-v5.17 > head: 6b1248798eb6f6d5285db214299996ecc5dc1e6b > commit: 0e25498f8cd43c1b5aa327f373dd094e9a006da7 [4/12] exit: Add and use make_task_dead. > config: x86_64-randconfig-a011-20211213 (https://download.01.org/0day-ci/archive/20211214/202112140949.Uq5sFKR1-lkp@intel.com/config) > compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 > reproduce (this is a W=1 build): > # https://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git/commit/?id=0e25498f8cd43c1b5aa327f373dd094e9a006da7 > git remote add ebiederm-user-namespace https://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git > git fetch --no-tags ebiederm-user-namespace signal-for-v5.17 > git checkout 0e25498f8cd43c1b5aa327f373dd094e9a006da7 > # save the config file to linux build tree > mkdir build_dir > make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/ kernel/ lib/kunit/ > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot > > All warnings (new ones prefixed by >>): > >>> lib/kunit/kunit-example-test.o: warning: objtool: .text.unlikely: unexpected end of section > -- >>> arch/x86/kernel/dumpstack.o: warning: objtool: oops_end() falls through to next function show_opcodes() I am confused. This change patches objtool to rename rewind_stack_and_do_exit to rewind_stack_and_make_dead in the list global_noreturns in tools/objtool/check.c There is no other change to oops_end other than that renaming. Did the robot somehow mange to run an old version of objtool while building and this get this error? I tried and I am not currently able to reproduce this error. Do you have any additional pointers on how I might reproduce this? Eric