tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: dfa377c35d70c31139b1274ec49f87d380996c42 commit: 49faa77759b211fff344898edc23bb780707fff5 locking/lockdep: Improve noinstr vs errors date: 8 weeks ago config: x86_64-buildonly-randconfig-r001-20210812 (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... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 49faa77759b211fff344898edc23bb780707fff5 # save the attached .config 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: do_machine_check()+0x5e9: call to memset() leaves .noinstr.text section --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org