undefined reference to `compat_sys_setitimer'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   eea2d5da29e396b6cc1fb35e36bcbf5f57731015
commit: 4c22ea2b91203564fdf392b3d3cae249b652a8ae y2038: use compat_{get,set}_itimer on alpha
date:   3 weeks ago
config: alpha-allnoconfig (attached as .config)
compiler: alpha-linux-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 4c22ea2b91203564fdf392b3d3cae249b652a8ae
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=alpha 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   arch/alpha/kernel/systbls.o: In function `sys_call_table':
>> (.data+0x298): undefined reference to `compat_sys_setitimer'
>> (.data+0x2b0): undefined reference to `compat_sys_getitimer'

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0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation

Attachment: .config.gz
Description: application/gzip