Hi John, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on arm64/for-next/core] [also build test ERROR on asm-generic/master soc/for-next linus/master v5.11-rc3 next-20210115] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/John-Garry/Fix-arm64-crash-for-a... base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core config: parisc-randconfig-r022-20210115 (attached as .config) compiler: hppa-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/48d619e4d6beb0d7a086cbe60a0b24355... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review John-Garry/Fix-arm64-crash-for-accessing-unmapped-IO-port-regions-reboot/20210116-010800 git checkout 48d619e4d6beb0d7a086cbe60a0b24355d3ddd52 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc 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 >>): 32 | .start = IO_SPACE_BASE, | ^~~~~~~~~~~~~ | QIF_SPACE_B vim +32 kernel/resource.c 28 29 30 struct resource ioport_resource = { 31 .name = "PCI IO", 33 .end = IO_SPACE_LIMIT, 34 .flags = IORESOURCE_IO, 35 }; 36 EXPORT_SYMBOL(ioport_resource); 37 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org