Build is broken. Exits with Error 1 when building vmlinux

[tlorens]

I've tried multiple things and this continues to happen.

]$ make ARCH=arm -j4 zImage modules
drivers/built-in.o: In function lowmem_shrink': /home/icebrkr/odroid/odroid.3.0.y-android/drivers/staging/android/lowmemorykiller.c:163: undefined reference tocompact_nodes'
make: *** [.tmp_vmlinux1] Error 1

[tlorens]

Also this just prior.

WARNING: modpost: Found 1 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'

[tlorens]

make ARCH=arm exynos4_defconfig

seems to build without errors.