Re: [PATCH bpf-next v2 1/2] libbpf: do not resolve size on duplicate FUNCs

[Eric Long <i@xxxxxxxxxx>]

On 30/09/2024 00:32, Alexei Starovoitov wrote:
> On Sun, Sep 29, 2024 at 2:31 AM Eric Long via B4 Relay
> <devnull+i.hack3r.moe@xxxxxxxxxx> wrote:
>
> Looks like a hack to me.
>
> In the test you're using:
> void *bpf_cast_to_kern_ctx(void *obj) __ksym;
>
> but __weak is missing.
> Is that the reason you're hitting this issue?

No. libbpf still returns -EINVAL (from the same path) even if the 
prototype is marked __weak, when the patch is not applied.

(Sorry for the off-list reply)