[kbuild-all] cc1: error: arch/um/include/uapi: No such file or directory

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b29482fde649c72441d5478a4ea2c52c56d97a5e commit: c348c16305280fe3e6c1186378f96c8634c149f9 lib: make a test module with set/clear bit date: 6 days ago config: um-allmodconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): git checkout c348c16305280fe3e6c1186378f96c8634c149f9 # save the attached .config to linux build tree make W=1 ARCH=um If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): cc1: all warnings being treated as errors --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org