Hi Yishai, I love your patch! Yet something to improve: [auto build test ERROR on awilliam-vfio/next] [also build test ERROR on linus/master v5.19-rc4 next-20220630] [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/intel-lab-lkp/linux/commits/Yishai-Hadas/Add-device-DMA-logging-support-for-mlx5-driver/20220630-182957 base: https://github.com/awilliam/linux-vfio.git next config: arm-randconfig-r005-20220629 (https://download.01.org/0day-ci/archive/20220701/202207011231.1oPQhSzo-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0 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/intel-lab-lkp/linux/commit/fea20efca2795fd8480cb0755c54062bad2ea322 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Yishai-Hadas/Add-device-DMA-logging-support-for-mlx5-driver/20220630-182957 git checkout fea20efca2795fd8480cb0755c54062bad2ea322 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: drivers/vfio/vfio_main.o: in function `vfio_ioctl_device_feature_logging_start': >> vfio_main.c:(.text+0x61a): undefined reference to `interval_tree_iter_first' >> arm-linux-gnueabi-ld: vfio_main.c:(.text+0x62e): undefined reference to `interval_tree_insert' -- 0-DAY CI Kernel Test Service https://01.org/lkp