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: arm-randconfig-r014-20210115 (attached as .config) compiler: arm-linux-gnueabi-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=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from include/linux/scatterlist.h:9, from include/linux/dma-mapping.h:10, from arch/arm/kernel/asm-offsets.c:13: 221 | #define IO_SPACE_LIMIT ((resource_size_t)0xffff) | ^~~~~~~~~~~~~~~ include/linux/logic_pio.h:115:27: note: in expansion of macro 'IO_SPACE_LIMIT' 115 | #define MMIO_UPPER_LIMIT (IO_SPACE_LIMIT - PIO_INDIRECT_SIZE) | ^~~~~~~~~~~~~~ include/linux/logic_pio.h:117:25: note: in expansion of macro 'MMIO_UPPER_LIMIT' 117 | #if MMIO_LOWER_LIMIT >= MMIO_UPPER_LIMIT | ^~~~~~~~~~~~~~~~ 221 | #define IO_SPACE_LIMIT ((resource_size_t)0xffff) | ^~~~~~ include/linux/logic_pio.h:115:27: note: in expansion of macro 'IO_SPACE_LIMIT' 115 | #define MMIO_UPPER_LIMIT (IO_SPACE_LIMIT - PIO_INDIRECT_SIZE) | ^~~~~~~~~~~~~~ include/linux/logic_pio.h:117:25: note: in expansion of macro 'MMIO_UPPER_LIMIT' 117 | #if MMIO_LOWER_LIMIT >= MMIO_UPPER_LIMIT | ^~~~~~~~~~~~~~~~ -- In file included from include/linux/scatterlist.h:9, from include/linux/dma-mapping.h:10, from arch/arm/kernel/asm-offsets.c:13: 221 | #define IO_SPACE_LIMIT ((resource_size_t)0xffff) | ^~~~~~~~~~~~~~~ include/linux/logic_pio.h:115:27: note: in expansion of macro 'IO_SPACE_LIMIT' 115 | #define MMIO_UPPER_LIMIT (IO_SPACE_LIMIT - PIO_INDIRECT_SIZE) | ^~~~~~~~~~~~~~ include/linux/logic_pio.h:117:25: note: in expansion of macro 'MMIO_UPPER_LIMIT' 117 | #if MMIO_LOWER_LIMIT >= MMIO_UPPER_LIMIT | ^~~~~~~~~~~~~~~~ 221 | #define IO_SPACE_LIMIT ((resource_size_t)0xffff) | ^~~~~~ include/linux/logic_pio.h:115:27: note: in expansion of macro 'IO_SPACE_LIMIT' 115 | #define MMIO_UPPER_LIMIT (IO_SPACE_LIMIT - PIO_INDIRECT_SIZE) | ^~~~~~~~~~~~~~ include/linux/logic_pio.h:117:25: note: in expansion of macro 'MMIO_UPPER_LIMIT' 117 | #if MMIO_LOWER_LIMIT >= MMIO_UPPER_LIMIT | ^~~~~~~~~~~~~~~~ make[2]: *** [scripts/Makefile.build:117: arch/arm/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 +/resource_size_t +221 arch/arm/include/asm/io.h ^1da177e4c3f4152 include/asm-arm/io.h Linus Torvalds 2005-04-16 205 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 206 /* 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 207 * This is the limit of PC card/PCI/ISA IO space, which is by default 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 208 * 64K if we have PC card, PCI or ISA support. Otherwise, default to 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 209 * zero to prevent ISA/PCI drivers claiming IO space (and potentially 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 210 * oopsing.) 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 211 * 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 212 * Only set this larger if you really need inb() et.al. to operate over 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 213 * a larger address space. Note that SOC_COMMON ioremaps each sockets 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 214 * IO space area, and so inb() et.al. must be defined to operate as per 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 215 * readb() et.al. on such platforms. 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 216 */ 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 217 #ifndef IO_SPACE_LIMIT 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 218 #if defined(CONFIG_PCMCIA_SOC_COMMON) || defined(CONFIG_PCMCIA_SOC_COMMON_MODULE) 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 219 #define IO_SPACE_LIMIT ((resource_size_t)0xffffffff) 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 220 #elif defined(CONFIG_PCI) || defined(CONFIG_ISA) || defined(CONFIG_PCCARD) 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 @221 #define IO_SPACE_LIMIT ((resource_size_t)0xffff) 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 222 #else 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 223 #define IO_SPACE_LIMIT ((resource_size_t)0) 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 224 #endif 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 225 #endif 04e1c83806e30ae3 arch/arm/include/asm/io.h Russell King 2011-07-06 226 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org