DKMS make.log for virtualbox-4.1.12 for kernel 3.5.0-27-generic (i686)
make: Entering directory `/usr/src/linux-headers-3.5.0-27-generic'
  LD      /var/lib/dkms/virtualbox/4.1.12/build/built-in.o
  LD      /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/built-in.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/linux/SUPDrv-linux.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/SUPDrv.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/SUPDrvSem.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/alloc-r0drv.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/initterm-r0drv.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/memobj-r0drv.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/mpnotification-r0drv.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/powernotification-r0drv.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/linux/assert-r0drv-linux.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/linux/alloc-r0drv-linux.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/linux/initterm-r0drv-linux.o
  CC [M]  /var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/linux/memobj-r0drv-linux.o
/var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/linux/memobj-r0drv-linux.c: In function ‘rtR0MemObjLinuxDoMmap’:
/var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/linux/memobj-r0drv-linux.c:1150:9: error: implicit declaration of function ‘do_mmap’ [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[2]: *** [/var/lib/dkms/virtualbox/4.1.12/build/vboxdrv/r0drv/linux/memobj-r0drv-linux.o] Error 1
make[1]: *** [/var/lib/dkms/virtualbox/4.1.12/build/vboxdrv] Error 2
make: *** [_module_/var/lib/dkms/virtualbox/4.1.12/build] Error 2
make: Leaving directory `/usr/src/linux-headers-3.5.0-27-generic'