tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git master head: c268640c1e164a8084deae65b4d6136fff429eba commit: 7ec51079b641eebeb984246bd42bf4bcece1d087 [3/5] Merge branch 'locking/core' config: x86_64-randconfig-r014-20211215 (https://download.01.org/0day-ci/archive/20220117/202201170731.quqbKbo5-lk...) 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/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue master git checkout 7ec51079b641eebeb984246bd42bf4bcece1d087 # save the config file to linux build tree mkdir build_dir 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 <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): vmlinux.o: warning: objtool: mce_read_aux()+0x63: call to mca_msr_reg() leaves .noinstr.text section vmlinux.o: warning: objtool: enter_from_user_mode()+0x52: call to on_thread_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_enter_from_user_mode()+0x59: call to on_thread_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare()+0x52: call to on_thread_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: irqentry_enter_from_user_mode()+0x52: call to on_thread_stack() leaves .noinstr.text section --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org