Uninstalling modules from DKMS
  removing old DKMS module vboxhost version  5.0.2

------------------------------
Deleting module version: 5.0.2
completely from the DKMS tree.
------------------------------
Done.
Attempting to install using DKMS

Creating symlink /var/lib/dkms/vboxhost/5.0.2/source ->
                 /usr/src/vboxhost-5.0.2

DKMS: add completed.

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area....
make KERNELRELEASE=4.9.0-0.bpo.2-amd64 -C /lib/modules/4.9.0-0.bpo.2-amd64/build M=/var/lib/dkms/vboxhost/5.0.2/build....(bad exit status: 2)
Failed to install using DKMS, attempting to install without
make KBUILD_VERBOSE=1 SUBDIRS=/tmp/vbox.0 SRCROOT=/tmp/vbox.0 CONFIG_MODULE_SIG= -C /lib/modules/4.9.0-0.bpo.2-amd64/build modules
make -C /usr/src/linux-headers-4.9.0-0.bpo.2-amd64 KBUILD_SRC=/usr/src/linux-headers-4.9.0-0.bpo.2-common \
-f /usr/src/linux-headers-4.9.0-0.bpo.2-common/Makefile modules
test -e include/generated/autoconf.h -a -e include/config/auto.conf || (		\
echo >&2;							\
echo >&2 "  ERROR: Kernel configuration is invalid.";		\
echo >&2 "         include/generated/autoconf.h or include/config/auto.conf are missing.";\
echo >&2 "         Run 'make oldconfig && make prepare' on kernel src to fix it.";	\
echo >&2 ;							\
/bin/false)
mkdir -p /tmp/vbox.0/.tmp_versions ; rm -f /tmp/vbox.0/.tmp_versions/*
make -f /usr/src/linux-headers-4.9.0-0.bpo.2-common/scripts/Makefile.build obj=/tmp/vbox.0
   gcc-4.9 -Wp,-MD,/tmp/vbox.0/linux/.SUPDrv-linux.o.d  -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/4.9/include -I/usr/src/linux-headers-4.9.0-0.bpo.2-common/arch/x86/include -I./arch/x86/include/generated/uapi -I./arch/x86/include/generated  -I/usr/src/linux-headers-4.9.0-0.bpo.2-common/include -I./include -I/usr/src/linux-headers-4.9.0-0.bpo.2-common/arch/x86/include/uapi -I/usr/src/linux-headers-4.9.0-0.bpo.2-common/include/uapi -I./include/generated/uapi -include /usr/src/linux-headers-4.9.0-0.bpo.2-common/include/linux/kconfig.h -I/usr/src/linux-headers-4.9.0-0.bpo.2-common//tmp/vbox.0 -I/tmp/vbox.0 -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -std=gnu89 -fno-PIE -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -m64 -falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387 -mpreferred-stack-boundary=3 -mtune=generic -mno-red-zone -mcmodel=kernel -funit-at-a-time -maccumulate-outgoing-args -DCONFIG_X86_X32_ABI -DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1 -DCONFIG_AS_FXSAVEQ=1 -DCONFIG_AS_SSSE3=1 -DCONFIG_AS_CRC32=1 -DCONFIG_AS_AVX=1 -DCONFIG_AS_AVX2=1 -DCONFIG_AS_AVX512=1 -DCONFIG_AS_SHA1_NI=1 -DCONFIG_AS_SHA256_NI=1 -pipe -Wno-sign-compare -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -O2 --param=allow-store-data-races=0 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-unused-but-set-variable -fno-var-tracking-assignments -g -pg -mfentry -DCC_USING_FENTRY -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -Werror=date-time -DCC_HAVE_ASM_GOTO -include /tmp/vbox.0/include/VBox/SUPDrvMangling.h  -I/lib/modules/4.9.0-0.bpo.2-amd64/build/include  -I/tmp/vbox.0/  -I/tmp/vbox.0/include  -I/tmp/vbox.0/r0drv/linux  -I/tmp/vbox.0/vboxdrv/  -I/tmp/vbox.0/vboxdrv/include  -I/tmp/vbox.0/vboxdrv/r0drv/linux -D__KERNEL__ -DMODULE -DRT_OS_LINUX -DIN_RING0 -DIN_RT_R0 -DIN_SUP_R0 -DVBOX -DRT_WITH_VBOX -DVBOX_WITH_HARDENING -DSUPDRV_WITH_RELEASE_LOGGER -Wno-declaration-after-statement -DCONFIG_VBOXDRV_AS_MISC -DRT_ARCH_AMD64 -DVBOX_WITH_64_BITS_GUESTS  -DMODULE  -DKBUILD_BASENAME='"SUPDrv_linux"'  -DKBUILD_MODNAME='"vboxdrv"' -c -o /tmp/vbox.0/linux/.tmp_SUPDrv-linux.o /tmp/vbox.0/linux/SUPDrv-linux.c
/tmp/vbox.0/linux/SUPDrv-linux.c: In function ‘VBoxDrvLinuxUnload’:
/tmp/vbox.0/linux/SUPDrv-linux.c:487:8: error: void value not ignored as it ought to be
     rc = misc_deregister(&gMiscDeviceUsr);
        ^
/tmp/vbox.0/linux/SUPDrv-linux.c:492:8: error: void value not ignored as it ought to be
     rc = misc_deregister(&gMiscDeviceSys);
        ^
/usr/src/linux-headers-4.9.0-0.bpo.2-common/scripts/Makefile.build:298: recipe for target '/tmp/vbox.0/linux/SUPDrv-linux.o' failed
make[4]: *** [/tmp/vbox.0/linux/SUPDrv-linux.o] Error 1
/usr/src/linux-headers-4.9.0-0.bpo.2-common/Makefile:1507: recipe for target '_module_/tmp/vbox.0' failed
make[3]: *** [_module_/tmp/vbox.0] Error 2
Makefile:150: recipe for target 'sub-make' failed
make[2]: *** [sub-make] Error 2
Makefile:8: recipe for target 'all' failed
make[1]: *** [all] Error 2
Makefile:298: recipe for target 'vboxdrv' failed
make: *** [vboxdrv] Error 2