netdev - Re: "resolve_btfids: unresolved" warnings while building v5.16-rc1

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Date:   Mon, 15 Nov 2021 19:47:35 +0530
From:   Kumar Kartikeya Dwivedi <memxor@...il.com>
To:     Pavel Skripkin <paskripkin@...il.com>
Cc:     ast@...nel.org, Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Subject: Re: "resolve_btfids: unresolved" warnings while building v5.16-rc1

On Mon, Nov 15, 2021 at 07:04:51PM IST, Pavel Skripkin wrote:
> Hi, net/bpf developers!
>
> While building newest kernel for fuzzing I met following warnings:
>
> ```
>   BTFIDS  vmlinux
> WARN: resolve_btfids: unresolved symbol tcp_dctcp_kfunc_ids
> WARN: resolve_btfids: unresolved symbol tcp_cubic_kfunc_ids
> WARN: resolve_btfids: unresolved symbol tcp_bbr_kfunc_ids
>   SORTTAB vmlinux
>
> ```
>
> I haven't seen such warnings before and have no idea are they important or
> not. Config is attached.
>
> My host is openSUSE Tumbleweed with gcc (SUSE Linux) 10.3.1 20210707
> [revision 048117e16c77f82598fca9af585500572d46ad73] if it's important :)
>
>

I'll take a look later today.

>
> With regards,
> Pavel Skripkin

--
Kartikeya