Hi Jason, Thank you for the patch! Yet something to improve: [auto build test ERROR on tegra-drm/drm/tegra/for-next] [also build test ERROR on linus/master v5.12-rc3 next-20210315] [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/Jason-Ekstrand/dma-buf-add-dma_f... base: git://anongit.freedesktop.org/tegra/linux.git drm/tegra/for-next config: xtensa-randconfig-r022-20210315 (attached as .config) compiler: xtensa-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/570269f5d3ec3a13936fa2224682d39c8... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jason-Ekstrand/dma-buf-add-dma_fence_array_for_each-v2/20210316-060509 git checkout 570269f5d3ec3a13936fa2224682d39c8a037126 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa 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 >>): xtensa-linux-ld: drivers/dma-buf/dma-buf.o: in function `dma_buf_dynamic_attach': xtensa-linux-ld: drivers/dma-buf/dma-buf.o: in function `dma_buf_unmap_attachment': dma-buf.c:(.text+0x10b0): undefined reference to `sync_file_create' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org