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d="scan'208";a="336565859" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Mar 2023 19:54:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10650"; a="790092130" X-IronPort-AV: E=Sophos;i="5.98,264,1673942400"; d="scan'208";a="790092130" Received: from lkp-server01.sh.intel.com (HELO b613635ddfff) ([10.239.97.150]) by fmsmga002.fm.intel.com with ESMTP; 15 Mar 2023 19:54:19 -0700 Received: from kbuild by b613635ddfff with local (Exim 4.96) (envelope-from ) id 1pcdkw-0008GV-0u; Thu, 16 Mar 2023 02:54:18 +0000 Date: Thu, 16 Mar 2023 10:54:04 +0800 From: kernel test robot To: Peter Zijlstra Cc: oe-kbuild-all@lists.linux.dev, Greg Kroah-Hartman , Sasha Levin Subject: [stable:linux-5.15.y 9399/9999] arch/x86/kernel/smp.o: warning: objtool: sysvec_reboot()+0x4c: unreachable instruction Message-ID: <202303161032.qYNd8hr5-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 tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.15.y head: 2ddbd0f967b34872290e0f98fae32b91b4de7b87 commit: 54aa76ad5f0148ad54fc7ad42ad5a079bc12efee [9399/9999] x86: Mark stop_this_cpu() __noreturn config: x86_64-randconfig-a001-20230313 (https://download.01.org/0day-ci/archive/20230316/202303161032.qYNd8hr5-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=54aa76ad5f0148ad54fc7ad42ad5a079bc12efee git remote add stable https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git git fetch --no-tags stable linux-5.15.y git checkout 54aa76ad5f0148ad54fc7ad42ad5a079bc12efee # 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 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/202303161032.qYNd8hr5-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/kernel/smp.o: warning: objtool: sysvec_reboot()+0x4c: unreachable instruction objdump-func vmlinux.o sysvec_reboot: 0000 0000000000002900 : 0000 2900: 55 push %rbp 0001 2901: 48 89 e5 mov %rsp,%rbp 0004 2904: 41 55 push %r13 0006 2906: 41 54 push %r12 0008 2908: 49 89 fc mov %rdi,%r12 000b 290b: e8 00 00 00 00 call 2910 290c: R_X86_64_PLT32 irqentry_enter-0x4 0010 2910: 41 f6 84 24 88 00 00 00 03 testb $0x3,0x88(%r12) 0019 2919: 75 51 jne 296c 001b 291b: 41 89 c5 mov %eax,%r13d 001e 291e: 65 8a 05 00 00 00 00 mov %gs:0x0(%rip),%al # 2925 2921: R_X86_64_PC32 hardirq_stack_inuse-0x4 0025 2925: 84 c0 test %al,%al 0027 2927: 75 43 jne 296c 0029 2929: 65 c6 05 00 00 00 00 01 movb $0x1,%gs:0x0(%rip) # 2931 292c: R_X86_64_PC32 hardirq_stack_inuse-0x5 0031 2931: 65 4c 8b 1d 00 00 00 00 mov %gs:0x0(%rip),%r11 # 2939 2935: R_X86_64_PC32 hardirq_stack_ptr-0x4 0039 2939: 49 89 23 mov %rsp,(%r11) 003c 293c: 4c 89 dc mov %r11,%rsp 003f 293f: e8 00 00 00 00 call 2944 2940: R_X86_64_PLT32 irq_enter_rcu-0x4 0044 2944: 4c 89 e7 mov %r12,%rdi 0047 2947: e8 00 00 00 00 call 294c 2948: R_X86_64_PC32 .text+0xbd27c 004c 294c: e8 00 00 00 00 call 2951 294d: R_X86_64_PLT32 irq_exit_rcu-0x4 0051 2951: 5c pop %rsp 0052 2952: 44 89 ee mov %r13d,%esi 0055 2955: 4c 89 e7 mov %r12,%rdi 0058 2958: 65 c6 05 00 00 00 00 00 movb $0x0,%gs:0x0(%rip) # 2960 295b: R_X86_64_PC32 hardirq_stack_inuse-0x5 0060 2960: e8 00 00 00 00 call 2965 2961: R_X86_64_PLT32 irqentry_exit-0x4 0065 2965: 41 5c pop %r12 0067 2967: 41 5d pop %r13 0069 2969: 5d pop %rbp 006a 296a: c3 ret 006b 296b: cc int3 006c 296c: e8 00 00 00 00 call 2971 296d: R_X86_64_PLT32 irq_enter_rcu-0x4 0071 2971: 4c 89 e7 mov %r12,%rdi 0074 2974: e8 00 00 00 00 call 2979 2975: R_X86_64_PC32 .text+0xbd27c 0079 2979: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests