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

From: Daniel Borkmann
Date: Tue May 29 2018 - 15:51:06 EST


On 05/29/2018 08:18 PM, Song Liu wrote:
> On Tue, May 29, 2018 at 8:53 AM, John Fastabend
> <john.fastabend@xxxxxxxxx> wrote:
>> On 05/29/2018 03:35 AM, Arnd Bergmann wrote:
>>> On Tue, May 29, 2018 at 4:40 AM, YueHaibing <yuehaibing@xxxxxxxxxx> wrote:
>>>> The local variable is only used while CONFIG_IPV6 enabled
>>>>
>>>> net/core/filter.c: In function âsk_msg_convert_ctx_accessâ:
>>>> net/core/filter.c:6489:6: warning: unused variable âoffâ [-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@xxxxxxxxxx>
>>>
>>> I was about to send the same patch and found you had already sent one.
>>>
>>> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
>>
>> 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@xxxxxxxxx>
>
> Acked-by: Song Liu <songliubraving@xxxxxx>

Applied to bpf-next, thanks Yue!