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=-7.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gnuweeb.org (Postfix) with ESMTPS id 5A4567F61A for ; Thu, 12 May 2022 09:30:27 +0000 (UTC) Authentication-Results: gnuweeb.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=nDL7QZrO; dkim-atps=neutral DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1652347827; x=1683883827; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=AmsmpFRBZgBqbkKkYQ3mf0e5uEsOB80kwhJl/V+HQs8=; b=nDL7QZrOGWVxUWMEFx7wPTEY1Mya8yeRHQzRmrWkq7DCyxtCGsonUgNq HDFLwy6llJ2qnFmjhRtpvNE7FFPlSH/juSzR8ulLlUMJWf/w19VW3c3TG 4TtqCOoByRqoACRjgW1JL+Na6kqwjcJWkhSgX12lt9l3UG4QtMlU7OQ2r I1gRVPeFxToujx+Li/SFCN0GErQvSfD5PbnzT5pVEnuVG9AvADOJcwKkX fTc9B67uBkGmm68jo4GUQxNgiEZKC1TLtUYaVv3xxYocnsDsv60Wncr7n 0iAJILv2WWEkZRJjd1FYYDqphvfDi0X9Gt4eqG2gPpqr6TRdX7zMw0M6L Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10344"; a="267533800" X-IronPort-AV: E=Sophos;i="5.91,219,1647327600"; d="scan'208";a="267533800" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2022 02:30:25 -0700 X-IronPort-AV: E=Sophos;i="5.91,219,1647327600"; d="scan'208";a="566598847" Received: from rongch2-mobl.ccr.corp.intel.com (HELO [10.255.30.14]) ([10.255.30.14]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2022 02:30:23 -0700 Subject: Re: [kbuild-all] Re: [ammarfaizi2-block:stable/linux-stable-rc/queue/5.15 146/150] kernel/futex.o: warning: objtool: futex_atomic_op_inuser()+0xb8: unreachable instruction To: Peter Zijlstra , kernel test robot Cc: kbuild-all@lists.01.org, GNU/Weeb Mailing List , linux-kernel@vger.kernel.org, Sasha Levin , Borislav Petkov References: <202205120956.qLpGQurX-lkp@intel.com> <20220512081709.GD76023@worktop.programming.kicks-ass.net> From: "Chen, Rong A" Message-ID: Date: Thu, 12 May 2022 17:30:20 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20220512081709.GD76023@worktop.programming.kicks-ass.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit List-Id: On 5/12/2022 4:17 PM, 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: Hi Peter, Thanks for your advice, we'll support it asap. Best Regards, Rong Chen > > https://lkml.kernel.org/r/3eb3f091fd6bd9caba50392ceab98ce756804f3b.1650578171.git.jpoimboe@redhat.com > > for each objtool warning it gives (as run on vmlinux.o): > > $ ./scripts/objdump-func build-output/vmlinux.o futex_atomic_op_inuser > $ ./scripts/objdump-func build-output/vmlinux.o madvise_behavior > $ ./scripts/objdump-func build-output/vmlinux.o __btf_resolve_size > > etc.. that would make it easier to see what the problem is without > having to reproduce the build. > > A super wild guess; but try this commit: > > 1ffbe4e935f9 ("objtool: Default ignore INT3 for unreachable") > > _______________________________________________ > kbuild-all mailing list -- kbuild-all@lists.01.org > To unsubscribe send an email to kbuild-all-leave@lists.01.org >