Missing __versions section on .ko

Ramesh.P rameshpa at gmail.com
Tue Sep 18 20:54:03 EDT 2012


'Invalid module' is typically thrown when you don't compile your
module against the kernel you are linking into. I think __versions
section is added by vermagic.o as part of build process. Please refer
http://lwn.net/images/pdf/LDD3/ch02.pdf, Version dependency section
for more details.


On Tue, Sep 18, 2012 at 7:10 AM, Pritam Bankar
<pritambankar1988 at gmail.com> wrote:
> On Tue, Sep 18, 2012 at 7:27 PM, Pritam Bankar
> <pritambankar1988 at gmail.com> wrote:
>> Any idea what causes __versions section to get added in *.ko module. A
>> simple hello.ko on ubuntu 12.04 i386 machine gets loaded successfully.
>> Other module just doesn't get loaded giving error " Invalid module ".
>> When I compared both modules with objdump -h I found __versions
>> section was missing from second module and that can be the reason its
>> not getting loaded. How can I add this section to other .ko ? What
>> causes __versions to get added in ko ?
> I have compiled both modules with modpost and Module.symvers.
>  Thanks,
>  Pritam Bankar
> --
> Pritam Bankar
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