tree: https://github.com/Xilinx/linux-xlnx master head: 566441779cdc25e377c2baab9277342b09b4249b commit: 566441779cdc25e377c2baab9277342b09b4249b [137/137] misc: xilinx-ai-engine: add setting shim dma bd operation config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): git checkout 566441779cdc25e377c2baab9277342b09b4249b # save the attached .config to linux build tree make W=1 ARCH=x86_64 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 <command-line>:32: ./usr/include/linux/xlnx-ai-engine.h:56:2: error: unknown type name 'size_t' 56 | size_t offset; | ^~~~~~ ./usr/include/linux/xlnx-ai-engine.h:57:2: error: unknown type name 'size_t' 57 | size_t size; | ^~~~~~ 138 | u32 *bd; | ^~~ --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org