tree: https://github.com/luxis1999/iommufd iommufd-v5.16-rc3 head: 44f89b130eec28760e6b655facd4be49c5bcc3f9 commit: 74814fdbefe2fb370111a0ce00641c64376447cb [31/33] vfio/pci: Add bind_iommufd() support config: x86_64-randconfig-a001-20211210 (https://download.01.org/0day-ci/archive/20211211/202112110341.e23ozuyj-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/luxis1999/iommufd/commit/74814fdbefe2fb370111a0ce00641... git remote add luxis1999-iommufd https://github.com/luxis1999/iommufd git fetch --no-tags luxis1999-iommufd iommufd-v5.16-rc3 git checkout 74814fdbefe2fb370111a0ce00641c64376447cb # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash 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 >>, old ones prefixed by <<): Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for IOMMUFD Depends on IOMMU_SUPPORT Selected by - VFIO_PCI_CORE && VFIO && PCI && MMU --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org