On Mon, Dec 3, 2012 at 12:18 PM, Pritam Bankar <pritambankar1988@gmail.com>wrote:

Hi, What is basic reason behind error "Unknown symbol in module" ? I have two modules test1.ko and test2.ko. test1.ko loads succesfully but test2.ko gives error

insmod: error inserting 'test2.ko': -1 Unknown symbol in module

Try adding module_licence("GPL")

dmesg shows all symbols in module as unknown. To give more details I have compiled both modules same way with same compiler options and with modpost, Module.Symvers files. Another point to mention is that both modules load perfectly on 2.6 kernel. But kernel on which I am trying is 3.0 series kernel. What can be entry point to look into this issue ?

Thanks, Pritam

_______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

-- Regards, Sandeep. “To learn is to change. Education is a process that changes the learner.”