Kernel Module Devlopment insmod issues

English Programming/Scripting
1

I’m getting this error when trying to run insmod xx.ko on a module I wrote: -1 Invalid module format

dmesg: no symbol version for module_layout

If anyone would have some time to just point me in the proper direction, I would appreciate it. I’ve spent the last two days searching the net looking for an answer, and it has been rather frustrating. I have found lots of data on nvidia drivers and other modules and the answers do not relate to my problem. I have dumbed my driver down to a basic helloworld type module.

I would be happy to provide any additional information that would be helpful - here is what I have so far:

openSUSE 11.2

relevant info from uname -a


2.6.31.5-0.1-default #1 SMP

output from modinfo


filename:       helloworld.ko
srcversion:     ED991015B68E7E20B0283E6
depends:
vermagic:       2.6.31.5-0.1-default SMP mod_unload modversions 586TSC

relevant output from zypper se kernel


S | Name                 | Summary                                                 | Type
--+----------------------+---------------------------------------------------------+--------
i | kernel-default       | The Standard Kernel                                     | package
i | kernel-default-base  | The Standard Kernel - base modules                      | package
i | kernel-default-devel | Development files necessary for building kernel modules | package
i | kernel-source        | The Linux Kernel Sources                                | package

Thank you for your help.

2

The answer… incorrect information to begin with.

The instructions I followed used the following make command:
make -C /usr/src/uname -r M=pwd modules
the code compiled… but I had the issues I reported.

using this:
make -C /lib/modules/uname -r/build M=pwd modules
allowed me to compile and insert my module with out any issues.

So apparently there is some difference in the configuration information provided in the modules/build directory … when I have time I will investigate more.

I would still like to know what “no symbol version for module_layout” means… I’m curious that way, but I will take this as a small success and move on.