Re: error inserting module.

[Greg KH <greg@xxxxxxxxx>]

On Thu, Aug 03, 2006 at 05:55:17PM +0200, Fernando Apestegu?a wrote:
> Hi!
> 
> I'm doing some tests with a kernel module. I was compiling and inserting the
> module without problems.
> After an upgrade of part of my system (Anjuta C/C++ IDE and related things
> like gcc etc...) I get this problem when trying to insert my module:
> 
> module: version magic '2.6.15.6 preempt PENTIUM4 REGPARM gcc-4.1' should be
> '2.6.15.6 preempt PENTIUM4 REGPARM gcc-4.0'
> insmod: error inserting 'module.ko': -1 invalid module format.
> 
> I guess that this is because the module was compiled with a more recent
> version of gcc than the kernel was... am I right?

Yes.

> And now... how can I fix this? Should I recompile my kernel with gcc-4.1?

Yes.

> should I downgrade to gcc-4.0 again?

If you want to, but I would just recommend rebuilding your kernel.

> Is there any macro that I can use to avoid this checking?

No, you want this check, it is there for a very good reason (different
compiler versions output different code, so everything must be built
with the same compiler version.)

thanks,

greg k-h

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