tree:   https://github.com/jgunthorpe/linux iommufd
head:   4d06b5807e799e0293171d872d8c1a40f3b466c5
commit: 7d982d8a3be5264edbd77796083193af431d8b3c [1/8] iommufd: File descriptor, context, kconfig and makefiles
config: i386-buildonly-randconfig-r002-20211117 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/jgunthorpe/linux/commit/7d982d8a3be5264edbd77796083193af431d8b3c
        git remote add jgunthorpe https://github.com/jgunthorpe/linux
        git fetch --no-tags jgunthorpe iommufd
        git checkout 7d982d8a3be5264edbd77796083193af431d8b3c
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   In file included from <command-line>:32:
>> ./usr/include/linux/iommufd.h:7:10: fatal error: uapi/linux/ioctl.h: No such file or directory
       7 | #include <uapi/linux/ioctl.h>
         |          ^~~~~~~~~~~~~~~~~~~~
   compilation terminated.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org