[RFC PATCH 4/7] static_call: fix broken static_call_query() for non-exported keys

[Peter Zijlstra]

On Tue, Nov 09, 2021 at 05:45:46PM +0100, Ard Biesheuvel wrote:
> static_call_query() accesses the func member of the static call key
> directly, which means that it is broken for cases where it is used from
> a module and the key resides elsewhere and is not exported.
> 

Arguably when the module can't change the value, it shouldn't be having
any interest in obtaining said value either.

I really think you're exporting too much. Modules aren't good, they
deserve to suffer.