linux-kernel - Re: [PATCH bpf-next] bpf: hide the unused 'off' variable

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Message-ID: <2b40c9d1-d8c7-ae0a-7339-aac2a20ba1b2@iogearbox.net>
Date:   Tue, 29 May 2018 21:50:50 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Song Liu <liu.song.a23@...il.com>,
        John Fastabend <john.fastabend@...il.com>
Cc:     Arnd Bergmann <arnd@...db.de>, YueHaibing <yuehaibing@...wei.com>,
        David Miller <davem@...emloft.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Networking <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH bpf-next] bpf: hide the unused 'off' variable

On 05/29/2018 08:18 PM, Song Liu wrote:
> On Tue, May 29, 2018 at 8:53 AM, John Fastabend
> <john.fastabend@...il.com> wrote:
>> On 05/29/2018 03:35 AM, Arnd Bergmann wrote:
>>> On Tue, May 29, 2018 at 4:40 AM, YueHaibing <yuehaibing@...wei.com> wrote:
>>>> The local variable is only used while CONFIG_IPV6 enabled
>>>>
>>>> net/core/filter.c: In function ‘sk_msg_convert_ctx_access’:
>>>> net/core/filter.c:6489:6: warning: unused variable ‘off’ [-Wunused-variable]
>>>>   int off;
>>>>       ^
>>>> This puts it into #ifdef.
>>>>
>>>> Fixes: 303def35f64e ("bpf: allow sk_msg programs to read sock fields")
>>>> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
>>>
>>> I was about to send the same patch and found you had already sent one.
>>>
>>> Acked-by: Arnd Bergmann <arnd@...db.de>
>>
>> Thanks! I'm curious why kbuild bot didn't catch this. Will
>> try to dig into that in a bit.
>>
>> Acked-by: John Fastabend <john.fastabend@...il.com>
> 
> Acked-by: Song Liu <songliubraving@...com>

Applied to bpf-next, thanks Yue!