From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on gnuweeb.org X-Spam-Level: X-Spam-Status: No, score=-6.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gnuweeb.org (Postfix) with ESMTPS id 48B487F628 for ; Thu, 12 May 2022 17:11:59 +0000 (UTC) Authentication-Results: gnuweeb.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=MWFzDxPu; dkim-atps=neutral Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 500936206B; Thu, 12 May 2022 17:11:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 034FBC385B8; Thu, 12 May 2022 17:11:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652375517; bh=ERf+o50ufn9OF177lvaoSS0BH6EvZkyDYDZBheKGLmA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=MWFzDxPuDAn2wAaGjXuJGcHJwgfrmqcxlSznSQyChlPRrjLVqzRJIKcDWrbaDVN+k iJCFmcoBtyPJsPUdkKprabhyMDon/HLfBZ6B5W2GWZjr0o5uhrkpeLEWo8kmzR/cUD /0M1mFO7+/sB6r8VXn60VyIB4ithexRdtRJYvzIIIH+h6mw1fZHQDcstTPSIlHzjiR lmYWoY/FwapGbzczOTkk/ZUO2dFNC3WnkZ95fUbkjQ6+j+/FIJDUBdRCP8P2fukrFU uiYVRWS1NXQo4WhfsG8aqdPVZri0e9ukvoCtqMxl9cD7XlfJ2Z6L3SD9WH/J+KvDlP uETXXJzfgUREA== Date: Thu, 12 May 2022 10:11:55 -0700 From: Josh Poimboeuf To: Peter Zijlstra Cc: kernel test robot , kbuild-all@lists.01.org, GNU/Weeb Mailing List , linux-kernel@vger.kernel.org, Sasha Levin , Borislav Petkov Subject: Re: [ammarfaizi2-block:stable/linux-stable-rc/queue/5.15 146/150] kernel/futex.o: warning: objtool: futex_atomic_op_inuser()+0xb8: unreachable instruction Message-ID: <20220512171155.53wc7z3tptixhsny@treble> References: <202205120956.qLpGQurX-lkp@intel.com> <20220512081709.GD76023@worktop.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220512081709.GD76023@worktop.programming.kicks-ass.net> List-Id: On Thu, May 12, 2022 at 10:17:09AM +0200, Peter Zijlstra wrote: > On Thu, May 12, 2022 at 10:00:33AM +0800, kernel test robot wrote: > > tree: https://github.com/ammarfaizi2/linux-block stable/linux-stable-rc/queue/5.15 > > head: 305e905f70311e1b49cc730931a19c3e364f4d8c > > commit: 45dc9d706619a6814e4063d5431483f94badb5a1 [146/150] x86: Add straight-line-speculation mitigation > > config: x86_64-randconfig-m001-20220509 (https://download.01.org/0day-ci/archive/20220512/202205120956.qLpGQurX-lkp@intel.com/config) > > compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 > > reproduce (this is a W=1 build): > > # https://github.com/ammarfaizi2/linux-block/commit/45dc9d706619a6814e4063d5431483f94badb5a1 > > git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block > > git fetch --no-tags ammarfaizi2-block stable/linux-stable-rc/queue/5.15 > > git checkout 45dc9d706619a6814e4063d5431483f94badb5a1 > > # save the config file > > mkdir build_dir && cp config build_dir/.config > > make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash > > > > If you fix the issue, kindly add following tag as appropriate > > Reported-by: kernel test robot > > > > All warnings (new ones prefixed by >>): > > > > >> kernel/futex.o: warning: objtool: futex_atomic_op_inuser()+0xb8: unreachable instruction > > -- > > >> mm/madvise.o: warning: objtool: madvise_behavior()+0x69: unreachable instruction > > -- > > >> kernel/bpf/btf.o: warning: objtool: __btf_resolve_size()+0x72: unreachable instruction > > Would it be possible for the robot to include the output of this script: > > https://lkml.kernel.org/r/3eb3f091fd6bd9caba50392ceab98ce756804f3b.1650578171.git.jpoimboe@redhat.com Ha, I already forgot about that script. I'll drop it into my objtool/core branch (eventually for tip) unless anybody objects. -- Josh