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

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

[jeshkumar555]

I don't know if it works, but I too got the same error and all the symbols are defined. But I forgot module_licence so it was giving symbol not found. If not added just add module_licence("GPL"), if added ignore this mail.

Sent from my HTC
Excuse for typo.

----- Reply message -----
From: "Pritam Bankar" <pritambankar1988@gmail.com>
Date: Mon, Dec 3, 2012 12:18 pm
Subject: insmod: error inserting 'test2.ko': -1 Unknown symbol in module
To: "kernelnewbies" <kernelnewbies@kernelnewbies.org>

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

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

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

[Grzegorz Dwornicki]

Well I had same problem in my own project that I am working ATM. We
won't be sure what is wrong until you show us the sourcecode but my
guess is missing EXPORT_SYMBOL makro - that was missing in my project.

Greg.

----- Reply message -----
From: "Pritam Bankar" <pritambankar1988@gmail.com>
Date: Mon, Dec 3, 2012 12:18 pm
Subject: insmod: error inserting 'test2.ko': -1 Unknown symbol in module
To: "kernelnewbies" <kernelnewbies@kernelnewbies.org>

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

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

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

[Pritam Bankar]

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

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

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

[SandeepKsinha]

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 at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>



-- 
Regards,
Sandeep.






?To learn is to change. Education is a process that changes the learner.?
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