tree:   https://github.com/jgunthorpe/linux vfio_iommufd
head:   d2ab4343c9f524e9404059830828188b0f8a15b6
commit: 41be72284fea27e79bd85a42d1967b13d7f26147 [25/29] vfio-iommufd: Allow iommufd to be used in place of a container fd
config: x86_64-randconfig-a002
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/jgunthorpe/linux/commit/41be72284fea27e79bd85a42d1967b13d7f26147
        git remote add jgunthorpe https://github.com/jgunthorpe/linux
        git fetch --no-tags jgunthorpe vfio_iommufd
        git checkout 41be72284fea27e79bd85a42d1967b13d7f26147
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "iommufd_vfio_compat_ioas_id" [drivers/vfio/vfio.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp