netdev - Re: [PATCH bpf] bpf: btf: Ensure the member->offset is in the right order

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Message-ID: <0e0a30fe-e1af-681c-2ccd-e9db91d5246f@fb.com>
Date:   Mon, 23 Jul 2018 11:45:05 -0700
From:   Yonghong Song <yhs@...com>
To:     Martin KaFai Lau <kafai@...com>, <netdev@...r.kernel.org>
CC:     Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>, <kernel-team@...com>
Subject: Re: [PATCH bpf] bpf: btf: Ensure the member->offset is in the right
 order



On 7/20/18 5:38 PM, Martin KaFai Lau wrote:
> This patch ensures the member->offset of a struct
> is in the correct order (i.e the later member's offset cannot
> go backward).
> 
> The current "pahole -J" BTF encoder does not generate something
> like this.  However, checking this can ensure future encoder
> will not violate this.
> 
> Fixes: 69b693f0aefa ("bpf: btf: Introduce BPF Type Format (BTF)")
> Signed-off-by: Martin KaFai Lau <kafai@...com>
Acked-by: Yonghong Song <yhs@...com>