tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 44db63d1ad8d71c6932cbe007eb41f31c434d140 commit: e100777016fdf6ec3a9d7c1773b15a2b5eca6c55 x86/mce: Annotate mce_rd/wrmsrl() with noinstr date: 9 months ago config: x86_64-buildonly-randconfig-r002-20210625 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e100777016fdf6ec3a9d7c1773b15a2b5eca6c55 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e100777016fdf6ec3a9d7c1773b15a2b5eca6c55 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): vmlinux.o: warning: objtool: idtentry_enter_nmi()+0x51: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: idtentry_exit_nmi()+0x4d: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: fixup_bad_iret()+0x7a: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: noist_exc_debug()+0x7e: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: exc_nmi()+0xeb: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: poke_int3_handler()+0x51: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: mce_check_crashing_cpu()+0x11: call to ftrace_likely_update() leaves .noinstr.text section >> vmlinux.o: warning: objtool: do_machine_check()+0x1af: call to {dynamic}() leaves .noinstr.text section vmlinux.o: warning: objtool: exc_machine_check()+0x6c: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: rcu_dynticks_eqs_enter()+0x20: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: rcu_dynticks_eqs_exit()+0x21: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: rcu_eqs_exit.constprop.0()+0x22: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: rcu_eqs_enter.constprop.0()+0x32: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: rcu_nmi_enter()+0x2c: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_enter_from_user_mode()+0x31: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_exit_to_user_mode()+0xad: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: irqentry_enter_from_user_mode()+0x2c: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: irqentry_exit_to_user_mode()+0x2f: call to ftrace_likely_update() leaves .noinstr.text section --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org