arch/arm64/kernel/built-in.o: In function `compat_sys_call_table':
/home/mgh01/hadk/android/bullhead/kernel/lge/bullhead/arch/arm64/kernel/sys32.S:104: undefined reference to `sys_getrandom'
/home/mgh01/hadk/android/bullhead/kernel/lge/bullhead/arch/arm64/kernel/sys32.S:104: undefined reference to `sys_memfd_create'
make[2]: *** [vmlinux] Error 1
make[1]: *** [sub-make] Error 2