linux-kernel - Re: [RFC PATCH bpf-next 08/13] bpf: Alloc and free bpf

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Date:   Sun, 26 Mar 2023 12:50:58 +0200
From:   Toke Høiland-Jørgensen <toke@...nel.org>
To:     Yafang Shao <laoar.shao@...il.com>, ast@...nel.org,
        daniel@...earbox.net, andrii@...nel.org, kafai@...com,
        songliubraving@...com, yhs@...com, john.fastabend@...il.com,
        kpsingh@...nel.org, sdf@...gle.com, haoluo@...gle.com,
        jolsa@...nel.org
Cc:     bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yafang Shao <laoar.shao@...il.com>
Subject: Re: [RFC PATCH bpf-next 08/13] bpf: Alloc and free bpf_map id in
 bpf namespace

Yafang Shao <laoar.shao@...il.com> writes:

> We only expose the bpf map id under current bpf namespace to user. The
> map->id is still the id in the init bpf namespace.
>
> The result as follows,
>
> Run bpftool in a new bpf namespace
> $ bpftool map show
> 4: array  name kprobe_b.rodata  flags 0x80
>         key 4B  value 37B  max_entries 1  memlock 360B
>         btf_id 159  frozen

The btf_id is identical for all the different objects in this example
output; surely that can't be right? Copy-paste error? Same thing in the
other patches...

-Toke