netdev - Re: [PATCH bpf-next] bpf: add test cases for non-pointer sanitiation logic

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Message-ID: <e7465593-866d-1479-e7dc-4891774563ee@iogearbox.net>
Date:   Sat, 2 Mar 2019 01:09:56 +0100
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Song Liu <liu.song.a23@...il.com>
Cc:     Alexei Starovoitov <ast@...com>, afabre@...udflare.com,
        Marek Majkowski <marek@...udflare.com>,
        bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>
Subject: Re: [PATCH bpf-next] bpf: add test cases for non-pointer sanitiation
 logic

On 03/02/2019 01:04 AM, Song Liu wrote:
> On Fri, Mar 1, 2019 at 3:27 PM Daniel Borkmann <daniel@...earbox.net> wrote:
>> On 03/02/2019 12:22 AM, Song Liu wrote:
>>> On Fri, Mar 1, 2019 at 1:10 PM Daniel Borkmann <daniel@...earbox.net> wrote:
[...]
> 
> I see, so the *2 comes from
> 
> BPF_ALU64_REG(BPF_ADD, BPF_REG_8, BPF_REG_7)

Yes, exactly the place we need to test for here.

> Thanks for the explanation.

np

Thanks,
Daniel