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: nios2-randconfig-r012-20210115 (attached as .config) compiler: nios2-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/a75a79165fd5529fe38a5f05268cce3c1... 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 a75a79165fd5529fe38a5f05268cce3c1ee89b5e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2 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 >>): In file included from include/asm-generic/io.h:530, from arch/nios2/include/asm/io.h:41, from include/linux/io.h:13, from include/linux/irq.h:20, from include/asm-generic/hardirq.h:17, from ./arch/nios2/include/generated/asm/hardirq.h:1, from include/linux/hardirq.h:10, from include/linux/interrupt.h:11, from include/linux/kernel_stat.h:9, from arch/nios2/kernel/asm-offsets.c:8: 118 | #error MMIO_UPPPER_LIMIT should be above MMIO_LOWER_LIMIT | ^~~~~ make[2]: *** [scripts/Makefile.build:117: arch/nios2/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1206: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +118 include/linux/logic_pio.h 114 115 #define MMIO_UPPER_LIMIT (IO_SPACE_LIMIT - PIO_INDIRECT_SIZE) 116 #define MMIO_LOWER_LIMIT IO_SPACE_BASE 117 #if MMIO_LOWER_LIMIT >= MMIO_UPPER_LIMIT 119 #endif 120 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org