netdev - Re: [PATCH v2 bpf-next] libbpf: provide more helpful message on uninitialized global var

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Message-ID: <44ae07d3-7f53-8062-69e1-9fdf9b3ecc9e@fb.com>
Date:   Tue, 23 Jul 2019 23:00:28 +0000
From:   Alexei Starovoitov <ast@...com>
To:     Song Liu <songliubraving@...com>, Andrii Nakryiko <andriin@...com>
CC:     bpf <bpf@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        "andrii.nakryiko@...il.com" <andrii.nakryiko@...il.com>,
        Kernel Team <Kernel-team@...com>
Subject: Re: [PATCH v2 bpf-next] libbpf: provide more helpful message on
 uninitialized global var

On 7/23/19 3:03 PM, Song Liu wrote:
>> On Jul 23, 2019, at 2:11 PM, Andrii Nakryiko<andriin@...com>  wrote:
>>
>> When BPF program defines uninitialized global variable, it's put into
>> a special COMMON section. Libbpf will reject such programs, but will
>> provide very unhelpful message with garbage-looking section index.
>>
>> This patch detects special section cases and gives more explicit error
>> message.
>>
>> Signed-off-by: Andrii Nakryiko<andriin@...com>
> Acked-by: Song Liu<songliubraving@...com>
> 

Applied. Thanks