Re: [PATCH bpf-next v4 13/13] bpf: Reject tracing progs for struct_ops with arena args

[Eduard Zingerman <eddyz87@gmail.com>]

On Wed, 2026-08-05 at 23:04 +0200, Kumar Kartikeya Dwivedi wrote:

...

> diff --git a/kernel/bpf/trampoline.c b/kernel/bpf/trampoline.c
> index b349e0817184..e07af35ed040 100644
> --- a/kernel/bpf/trampoline.c
> +++ b/kernel/bpf/trampoline.c
> @@ -529,16 +529,6 @@ bpf_trampoline_get_progs(const struct bpf_trampoline *tr, int *total, bool *ip_a
>  	return tnodes;
>  }
>  
> -static bool bpf_prog_has_arena_ctx_arg(const struct bpf_prog *prog)
> -{
> -	int i;
> -
> -	for (i = 0; i < prog->aux->ctx_arg_info_size; i++)
> -		if (base_type(prog->aux->ctx_arg_info[i].reg_type) == PTR_TO_ARENA)
> -			return true;
> -	return false;
> -}

Let's pick one place for this function throughout the series and don't
move it.

Also, a selftest?

...