Re: [PATCH v10 0/2] module: Extend module_blacklist parameter to built-in modules

On Wed, Sep 09, 2026 at 01:22:49PM +0000, Alice Ryhl wrote:

On Sun, Sep 06, 2026 at 10:08:57AM -0400, Aaron Tomlin wrote:

quoted

    2.  Mangled Names in Rust

        For drivers written in Rust, initcall symbols are compiler-mangled,
        which makes initcall_blacklist= virtually impossible for a user to
        specify at a boot prompt.

Are you sure?

As far as I can tell, the Rust module! macro applies #[no_mangle] to the
initcall, so no mangling should apply to it. Its name is the name of the
module followed by an underscore.

Alice

Hi Alice,

Sorry, I was wrong.

Looking at rust/kernel/module.rs, indeed #[no_mangle] ensures the symbols
are named __{module_name}_init and __{module_name}_exit without compiler
mangling.

Thank you for the follow up!

Kind regards,
-- 
Aaron Tomlin