netdev - Re: [PATCH bpf 1/2] bpf: allow empty module BTFs

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Message-ID: <baa7ef89-9540-e8e6-34d7-786125afce57@fb.com>
Date:   Mon, 11 Jan 2021 10:08:46 -0800
From:   Yonghong Song <yhs@...com>
To:     Andrii Nakryiko <andrii@...nel.org>, <bpf@...r.kernel.org>,
        <netdev@...r.kernel.org>, <ast@...com>, <daniel@...earbox.net>
CC:     <kernel-team@...com>,
        Christopher William Snowhill <chris@...e54.net>
Subject: Re: [PATCH bpf 1/2] bpf: allow empty module BTFs



On 1/9/21 11:03 PM, Andrii Nakryiko wrote:
> Some modules don't declare any new types and end up with an empty BTF,
> containing only valid BTF header and no types or strings sections. This
> currently causes BTF validation error. There is nothing wrong with such BTF,
> so fix the issue by allowing module BTFs with no types or strings.
> 
> Reported-by: Christopher William Snowhill <chris@...e54.net>
> Fixes: 36e68442d1af ("bpf: Load and verify kernel module BTFs")
> Signed-off-by: Andrii Nakryiko <andrii@...nel.org>

Acked-by: Yonghong Song <yhs@...com>