tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 4bf27b1f73303c33c5570b63f8ed734abcd1991f commit: 6512659d8f13015dccfb38a13c6d117d22572019 [1507/1792] btrfs: submit read time repair only for each corrupted sector config: arm-allyesconfig (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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=6512659d8f13015dccfb38a13c6d117d22572019 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 6512659d8f13015dccfb38a13c6d117d22572019 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: fs/btrfs/extent_io.o: in function `btrfs_submit_read_repair': >> extent_io.c:(.text+0x100cc): undefined reference to `__aeabi_uldivmod' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org