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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CBC38C00140 for ; Mon, 15 Aug 2022 04:59:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229795AbiHOE7d (ORCPT ); Mon, 15 Aug 2022 00:59:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229757AbiHOE7a (ORCPT ); Mon, 15 Aug 2022 00:59:30 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5E69413F07 for ; Sun, 14 Aug 2022 21:59:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1660539570; x=1692075570; h=date:from:to:cc:subject:message-id:mime-version; bh=/JwBGS9PqkfTwus26GEuq8ZmXRa/b3BVmsGKpEpeFBM=; b=KFfhbmHWBjG7wrVn72HDICPRPhvMOeg+3UVjCFjgogF+kmPZxgkX9DIc H6dzns7/T5BT/1/n58EKNMWtRM7I/TQSKgP5uHJdzyYC1D/uTyQSD8phL UpmwUZofT9VNSTFG5JUjIT477fXi/1jZNXYHOS1reKZ5/VV2HXi5sqbIz +XWr6li16+U8Q1B9CNV1FDrtiQUqFimKcgkTiaAxQh0mFDSPGiZOC514S 48Wj9EZyVBlNslGCCH4gsfsethrTCMBCUDNoYFM1RWjqhLlkhRA23s4FO FGe2550z011wB0f4Csg80KG0Tv/rlvmgZuTg+KF8CFx35reIfoTXZIC89 w==; X-IronPort-AV: E=McAfee;i="6400,9594,10439"; a="355895885" X-IronPort-AV: E=Sophos;i="5.93,237,1654585200"; d="scan'208";a="355895885" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Aug 2022 21:59:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,237,1654585200"; d="scan'208";a="748813216" Received: from lkp-server02.sh.intel.com (HELO 3d2a4d02a2a9) ([10.239.97.151]) by fmsmga001.fm.intel.com with ESMTP; 14 Aug 2022 21:59:28 -0700 Received: from kbuild by 3d2a4d02a2a9 with local (Exim 4.96) (envelope-from ) id 1oNSCF-0000nN-1n; Mon, 15 Aug 2022 04:59:27 +0000 Date: Mon, 15 Aug 2022 12:58:48 +0800 From: kernel test robot To: Borislav Petkov Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Peter Zijlstra Subject: vmlinux.o: warning: objtool: nmi_panic+0x30: unreachable instruction Message-ID: <202208151234.YgufKC9A-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 568035b01cfb107af8d2e4bd2fb9aea22cf5b868 commit: 2028a255f4df3af9e759f01f958d3237f825f256 x86/extable: Annotate ex_handler_msr_mce() as a dead end date: 3 months ago config: x86_64-randconfig-a006-20220815 (https://download.01.org/0day-ci/archive/20220815/202208151234.YgufKC9A-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2028a255f4df3af9e759f01f958d3237f825f256 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 2028a255f4df3af9e759f01f958d3237f825f256 # 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 where applicable Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> vmlinux.o: warning: objtool: nmi_panic+0x30: unreachable instruction objdump-func vmlinux.o nmi_panic: 0000 00000000000aeb50 : 0000 aeb50: f3 0f 1e fa endbr64 0004 aeb54: 55 push %rbp 0005 aeb55: 48 89 e5 mov %rsp,%rbp 0008 aeb58: 65 8b 15 00 00 00 00 mov %gs:0x0(%rip),%edx # aeb5f aeb5b: R_X86_64_PC32 cpu_number-0x4 000f aeb5f: b8 ff ff ff ff mov $0xffffffff,%eax 0014 aeb64: f0 0f b1 15 00 00 00 00 lock cmpxchg %edx,0x0(%rip) # aeb6c aeb68: R_X86_64_PC32 panic_cpu-0x4 001c aeb6c: 83 f8 ff cmp $0xffffffff,%eax 001f aeb6f: 0f 84 00 00 00 00 je aeb75 aeb71: R_X86_64_PC32 .text.unlikely+0x886a 0025 aeb75: 39 c2 cmp %eax,%edx 0027 aeb77: 75 02 jne aeb7b 0029 aeb79: 5d pop %rbp 002a aeb7a: c3 ret 002b aeb7b: e8 00 00 00 00 call aeb80 aeb7c: R_X86_64_PLT32 nmi_panic_self_stop-0x4 0030 aeb80: 5d pop %rbp 0031 aeb81: c3 ret 0032 aeb82: 66 66 2e 0f 1f 84 00 00 00 00 00 data16 cs nopw 0x0(%rax,%rax,1) 003d aeb8d: 0f 1f 00 nopl (%rax) 0000 000000000000886e : 0000 886e: 48 c7 c7 00 00 00 00 mov $0x0,%rdi 8871: R_X86_64_32S .rodata.str1.1+0x8244 0007 8875: e8 00 00 00 00 call 887a 8876: R_X86_64_PLT32 panic-0x4 -- 0-DAY CI Kernel Test Service https://01.org/lkp