[tip:x86/boot 4/7] head64.c:undefined reference to `level4_kernel_pgt'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/boot
head:   faf0ed487415f76fe4acf7980ce360901f5e1698
commit: 3b6f99a94b04b389292590840d96342b7dd08941 [4/7] x86/boot: Disable UBSAN in early boot code
config: x86_64-buildonly-randconfig-001-20241206 (https://download.01.org/0day-ci/archive/20241206/202412060403.efD8Kgb7-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241206/202412060403.efD8Kgb7-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202412060403.efD8Kgb7-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   ld: arch/x86/kernel/head64.o: in function `__startup_64':
>> head64.c:(.head.text+0xbd): undefined reference to `level4_kernel_pgt'

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki