ERROR: "sys_copyarea" [drivers/staging/vboxvideo/vboxvideo.ko] undefined!

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2acf097f16abba684012cca670a61d94178bd1ab
commit: dd55d44f408419278c00887bfcb2261d0caae350 staging: vboxvideo: Add vboxvideo to drivers/staging
date:   5 weeks ago
config: x86_64-randconfig-v0-08240305 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
        git checkout dd55d44f408419278c00887bfcb2261d0caae350
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

>> ERROR: "sys_copyarea" [drivers/staging/vboxvideo/vboxvideo.ko] undefined!
>> ERROR: "fb_alloc_cmap" [drivers/staging/vboxvideo/vboxvideo.ko] undefined!
>> ERROR: "sys_fillrect" [drivers/staging/vboxvideo/vboxvideo.ko] undefined!
>> ERROR: "sys_imageblit" [drivers/staging/vboxvideo/vboxvideo.ko] undefined!
>> ERROR: "framebuffer_alloc" [drivers/staging/vboxvideo/vboxvideo.ko] undefined!

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