From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 63FC8AD28 for ; Thu, 13 Apr 2023 16:11:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1681402278; x=1712938278; h=date:from:to:cc:subject:message-id:mime-version; bh=GHa28sFl62H0sirTQG1H0CKnNbe47Akpix1f4VHKa5A=; b=Jtlmda6JHfG99DyfGnNOJ0wtdlehdjTIiITYeHHB2r+FKpT2LCVXy1wi zkq/nTWoGe3R9j54hIPZGr6oa8GkxdQgAXXpUPr6iWMzruaLfH2FS5+jQ TGp3tTgIgFRMsorDc7PkqDog+s92T95frSAI1ncVpqyR6P8mWepfQs/z+ z0YbemS2JjzvUOfYYStu5yTA05wRj84T0op46HjgpceradsZrxDpPjxdX Ueq+I9KWEx7mlXgAjy9eNFGripMc3LtW7cbK9ScxnQ5unxA25HeZBMPOF a93N4os9T49pBEzzuR/XflrIfzCq2p+umittJTG6iAAGQGSYgCOZEM05W g==; X-IronPort-AV: E=McAfee;i="6600,9927,10679"; a="342975894" X-IronPort-AV: E=Sophos;i="5.99,194,1677571200"; d="scan'208";a="342975894" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Apr 2023 09:09:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10679"; a="689407898" X-IronPort-AV: E=Sophos;i="5.99,194,1677571200"; d="scan'208";a="689407898" Received: from lkp-server01.sh.intel.com (HELO b613635ddfff) ([10.239.97.150]) by orsmga002.jf.intel.com with ESMTP; 13 Apr 2023 09:09:55 -0700 Received: from kbuild by b613635ddfff with local (Exim 4.96) (envelope-from ) id 1pmzWE-000Ynl-0W; Thu, 13 Apr 2023 16:09:54 +0000 Date: Fri, 14 Apr 2023 00:09:50 +0800 From: kernel test robot To: Thomas Gleixner Cc: oe-kbuild-all@lists.linux.dev, Greg Kroah-Hartman , Borislav Petkov , Sasha Levin Subject: [stable:linux-5.4.y 4730/8053] arch/x86/kernel/cpu/mce/core.o: warning: objtool: ex_handler_rdmsr_fault()+0xf: unreachable instruction Message-ID: <202304140009.FCTdOYcH-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi Thomas, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.4.y head: 32bea3bac5ca484c6f7e302c8c96fc686f62e7b4 commit: 0a0fbbd6cb654f748d87c0db10c31741101f2ab2 [4730/8053] x86/mce: Deduplicate exception handling config: x86_64-rhel-8.3-ltp (https://download.01.org/0day-ci/archive/20230414/202304140009.FCTdOYcH-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=0a0fbbd6cb654f748d87c0db10c31741101f2ab2 git remote add stable https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git git fetch --no-tags stable linux-5.4.y git checkout 0a0fbbd6cb654f748d87c0db10c31741101f2ab2 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 olddefconfig make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash M=arch/x86 If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202304140009.FCTdOYcH-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/kernel/cpu/mce/core.o: warning: objtool: ex_handler_rdmsr_fault()+0xf: unreachable instruction objdump-func vmlinux.o ex_handler_rdmsr_fault: 0000 000000000008c7e0 : 0000 8c7e0: e8 00 00 00 00 call 8c7e5 8c7e1: R_X86_64_PLT32 __fentry__-0x4 0005 8c7e5: 48 89 f7 mov %rsi,%rdi 0008 8c7e8: 31 f6 xor %esi,%esi 000a 8c7ea: e8 31 a8 ff ff call 87020 000f 8c7ef: b8 01 00 00 00 mov $0x1,%eax 0014 8c7f4: c3 ret 0015 8c7f5: 66 66 2e 0f 1f 84 00 00 00 00 00 data16 cs nopw 0x0(%rax,%rax,1) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests