tree: https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git libnvdimm-fixes head: 3305ce9e90c8f1fefdf75acfbb814574c12bfcc5 commit: ec5f196ad972cd740bcbe6ef9c89a8a92d54ba44 [1/2] dm: Call proper helper to determine dax support config: openrisc-randconfig-r022-20200918 (attached as .config) compiler: or1k-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 git checkout ec5f196ad972cd740bcbe6ef9c89a8a92d54ba44 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc 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 >>): or1k-linux-ld: drivers/md/dm-table.o: in function `device_supports_dax': drivers/md/dm-table.c:866:(.text+0x84c): relocation truncated to fit: R_OR1K_INSN_REL_26 against undefined symbol `dax_read_lock' drivers/md/dm-table.c:868:(.text+0x854): relocation truncated to fit: R_OR1K_INSN_REL_26 against undefined symbol `dax_read_unlock' # https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git/commit/... git remote add linux-nvdimm https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git git fetch --no-tags linux-nvdimm libnvdimm-fixes git checkout ec5f196ad972cd740bcbe6ef9c89a8a92d54ba44 vim +866 drivers/md/dm-table.c 858 859 /* validate the dax capability of the target device span */ 860 int device_supports_dax(struct dm_target *ti, struct dm_dev *dev, 861 sector_t start, sector_t len, void *data) 862 { 863 int blocksize = *(int *) data, id; 864 bool rc; 865 867 rc = dax_supported(dev->dax_dev, dev->bdev, blocksize, start, len); 869 870 return rc; 871 } 872 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org