Re: [PATCH 5/6] module: make modversion_info contain a pointer, not an array.

[Rusty Russell <rusty@rustcorp.com.au>]

On Tuesday 10 February 2009 04:20:50 Shawn Bohrer wrote:
> This also results in a taint flag of 3.  So I'm thinking the regression
> here is that somewhere between 2.6.25 (I know openSUSE 11 worked too)
> and 2.6.27 the kernel stopped allowing modules to load if they didn't
> build with modversion support and the kernel was built with
> CONFIG_MODVERSIONS=y.

Before 2.6.26, the kernel ignored the vermagic field when
CONFIG_MODVERSIONS=y.  I changed it to only ignore vermagic *if* there
were CRCs.

If you use modprobe --force, you should be able to load a non-modversions
module into a modversions kernel.

> > And anyway, what was the symbol name which is over 56 characters long which
> > started this?
> 
> Yeah, that is an interesting question isn't it?  Let me just say that
> namespaces and name mangling make it really easy to have names longer
> than 56 characters.

Yes, C++.  This is one reason we don't support it.

Hope that helps,
Rusty.