[kbuild-all] [tobetter-linux:odroid-5.11.y 50/88] ERROR: modpost: "phys_mem_access_prot" undefined!

tree: https://github.com/tobetter/linux odroid-5.11.y head: f22a0a376737d4e5d61f155ab65bde2de835dc2e commit: d565b01bf703a1fcb33747d62b76676ea1a64c64 [50/88] ODROID-XU4: char: exynos: add /dev/gpiomem device for rootless user GPIO access config: i386-randconfig-s001-20210215 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-215-g0fb77bb6-dirty # https://github.com/tobetter/linux/commit/d565b01bf703a1fcb33747d62b76676e... git remote add tobetter-linux https://github.com/tobetter/linux git fetch --no-tags tobetter-linux odroid-5.11.y git checkout d565b01bf703a1fcb33747d62b76676ea1a64c64 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 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 <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org