Re: [PATCH bpf v5 2/2] selftests/bpf: strengthen bpf_kfunc_implicit_arg to verify aux injection

[Eduard Zingerman]

On Mon, 2026-06-08 at 22:26 +0800, chenyuan_fl@xxxxxxx wrote:
> From: Yuan Chen <chenyuan@xxxxxxxxxx>
> 
> Verify that the KF_IMPLICIT_ARGS injection path correctly passes
> the bpf_prog_aux pointer by checking aux->name in
> bpf_kfunc_implicit_arg() for the expected program name prefix.
> If the verifier incorrectly skipped injection (as could happen
> with pahole 1.30's BTF mismatch), the stale register would not
> contain a valid aux pointer and the name check would fail.
> 
> This is a positive test exercised by the existing kfunc_implicit_args
> selftest, which calls bpf_kfunc_implicit_arg(5) and expects a return
> value of 5.
> 
> Signed-off-by: Yuan Chen <chenyuan@xxxxxxxxxx>
> ---

Acked-by: Eduard Zingerman <eddyz87@xxxxxxxxx>

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