Re: [PATCH bpf] bpf: Fix error message on kfunc arg type mismatch

On Mon, Sep 9, 2024 at 6:39 AM Maxim Mikityanskiy maxtram95@gmail.com wrote:

When "arg#%d expected pointer to ctx, but got %s" error is printed, both template parts actually point to the type of the argument, therefore, it will also say "but got PTR", regardless of what was the actual register type.

Fix the message to print the register type in the second part of the template, change the existing test to adapt to the new format, and add a new test to test the case when arg is a pointer to context, but reg is a scalar.

Fixes: 00b85860feb8 ("bpf: Rewrite kfunc argument handling")

Kumar,

please review.

This is bpf-next material. fwiw.