Re: [Bugme-new] [Bug 8957] New: Exported functions and variables

Arjan van de Ven
2007-08-30T16:57:36Z

On Thu, 30 Aug 2007 09:41:41 -0700 (PDT)
Matti Linnanvuori <mattilinnanvuori@yahoo.com> wrote:

> I thought that the bug might happen when two kernel modules are being
> loaded. If module A is loaded and its code includes references to
> functions exported by module B, I thought module A could call those
> functions before the module_init function of module B has finished. I
> was not thinking about buggy calls to registering interface
> functions. I just thought that the kernel should not allow symbols
> exported by EXPORT_SYMBOLto be visible to other modules before the
> module_init function is finished. One could code the exported
> functions so that they could be safely called by anyone while the
> module_init function is being called but that would be an unnecessary
> burden for coders. I think that a module should expose its functions
> and variables only by calling registering interface functions before
> the module_init function is finished. So I think the design of the
> kernel modules is flawed if it allows anyone to call exported
> functions before the module_init function is finished.
>

have you seen this?
module loading is pretty much serialized, so that no 2 modules are
being loaded in parallel...