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Date:   Thu, 17 May 2018 00:59:44 +0200
From:   Daniel Borkmann <>
To:     Mathieu Malaterre <>,
        Alexei Starovoitov <>
Subject: Re: [PATCH] bpf: add __printf verification to bpf_verifier_vlog

On 05/16/2018 10:27 PM, Mathieu Malaterre wrote:
> __printf is useful to verify format and arguments. ‘bpf_verifier_vlog’
> function is used twice in verifier.c in both cases the caller function
> already uses the __printf gcc attribute.
> Remove the following warning, triggered with W=1:
>   kernel/bpf/verifier.c:176:2: warning: function might be possible candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
> Signed-off-by: Mathieu Malaterre <>

Looks good, applied to bpf-next, thanks Mathieu!

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