gistfile1.txt

$ ls
Config.mak	  drvwrapper.o	  vga2usb-3.26.0.26-debian-2.6.32-5-amd64.tbz
drvwrapper.c	  Makefile	  vga2usb_bins.o
drvwrapper.h	  modules.order   vga2usb.ko
drvwrapper_lib.c  Module.symvers  vga2usb.mod.c
drvwrapper_lib.h  README	  vga2usb.mod.o
drvwrapper_lib.o  v2u_id.h	  vga2usb.o

$ make; make install
$ depmod -a 
$ cp -R vga2usb.ko /lib/modules/2.6.39-bpo.2-amd64/
$ modprobe vga2usb
FATAL: Error inserting vga2usb (/lib/modules/2.6.39-bpo.2-amd64/extra/vga2usb.ko): Unknown symbol in module, or unknown parameter (see dmesg)

$ dmesg
[ 5948.981892] Linux media interface: v0.10
[ 5948.985498] Linux video capture interface: v2.00
[ 5948.986326] Disabling lock debugging due to kernel taint
[ 5948.987016] vga2usb: Unknown symbol kthread_create (err 0)
[ 5948.987536] vga2usb: Unknown symbol _spin_unlock_irqrestore (err 0)
[ 5948.987577] vga2usb: Unknown symbol per_cpu__kernel_stack (err 0)
[ 5948.987809] vga2usb: Unknown symbol _spin_lock_irq (err 0)
[ 5948.987964] vga2usb: Unknown symbol video_register_device (err 0)
[ 5948.988004] vga2usb: Unknown symbol per_cpu__cpu_number (err 0)
[ 5948.988085] vga2usb: Unknown symbol _spin_lock_irqsave (err 0)
[ 5948.988224] vga2usb: Unknown symbol _spin_lock (err 0)
[ 5948.988370] vga2usb: Unknown symbol videobuf_cgmbuf (err 0)
[ 5948.988431] vga2usb: Unknown symbol per_cpu__current_task (err 0)