Hi Chunguang, Thank you for the patch! Yet something to improve: [auto build test ERROR on v5.9] [also build test ERROR on next-20201016] [cannot apply to ext4/dev tytso-fscrypt/master] [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/Chunguang-Xu/ext4-use-ASSERT-to-... base: bbf5c979011a099af5dc76498918ed7df445635b config: arm-cerfcube_defconfig (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/1bcce45cce439ec86a89aa8cfc895b5e9... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Chunguang-Xu/ext4-use-ASSERT-to-replace-J_ASSERT/20201016-115723 git checkout 1bcce45cce439ec86a89aa8cfc895b5e9ad5046b # 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 errors (new ones prefixed by >>): In file included from include/linux/math64.h:7, from include/linux/time.h:6, from fs/ext4/balloc.c:15: fs/ext4/balloc.c: In function 'ext4_get_group_desc': 60 | #define do_div(n, base) __div64_32(&(n), base) | ^~~~ | | | unsigned int * fs/ext4/balloc.c:282:11: note: in expansion of macro 'do_div' 282 | offset = do_div(group_desc, EXT4_DESC_PER_BLOCK(sb)); | ^~~~~~ arch/arm/include/asm/div64.h:33:45: note: expected 'uint64_t *' {aka 'long long unsigned int *'} but argument is of type 'unsigned int *' 33 | static inline uint32_t __div64_32(uint64_t *n, uint32_t base) | ~~~~~~~~~~^ cc1: some warnings being treated as errors vim +/__div64_32 +60 arch/arm/include/asm/div64.h fa4adc614922c24 include/asm-arm/div64.h Nicolas Pitre 2006-12-06 53 fa4adc614922c24 include/asm-arm/div64.h Nicolas Pitre 2006-12-06 54 /* 040b323b5012b55 arch/arm/include/asm/div64.h Nicolas Pitre 2015-11-02 55 * In OABI configurations, some uses of the do_div function 040b323b5012b55 arch/arm/include/asm/div64.h Nicolas Pitre 2015-11-02 56 * cause gcc to run out of registers. To work around that, 040b323b5012b55 arch/arm/include/asm/div64.h Nicolas Pitre 2015-11-02 57 * we can force the use of the out-of-line version for 040b323b5012b55 arch/arm/include/asm/div64.h Nicolas Pitre 2015-11-02 58 * configurations that build a OABI kernel. fa4adc614922c24 include/asm-arm/div64.h Nicolas Pitre 2006-12-06 59 */ 040b323b5012b55 arch/arm/include/asm/div64.h Nicolas Pitre 2015-11-02 @60 #define do_div(n, base) __div64_32(&(n), base) fa4adc614922c24 include/asm-arm/div64.h Nicolas Pitre 2006-12-06 61 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org