netdev - Re: [PATCH bpf] bpf: Fix precision tracking for unbounded scalars

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Message-ID: <CAADnVQJ5H2c-QCLAXYdb6j2mYpCNDZ0pGa96BMbKRmasqeup3A@mail.gmail.com>
Date:   Sun, 22 Dec 2019 17:29:28 -0800
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>,
        Anatoly Trosinenko <anatoly.trosinenko@...il.com>
Subject: Re: [PATCH bpf] bpf: Fix precision tracking for unbounded scalars

On Sun, Dec 22, 2019 at 2:37 PM Daniel Borkmann <daniel@...earbox.net> wrote:
>
> Anatoly has been fuzzing with kBdysch harness and reported a hang in one
> of the outcomes. Upon closer analysis, it turns out that precise scalar
> value tracking is missing a few precision markings for unknown scalars:
>
> Fixes: 6754172c208d ("bpf: fix precision tracking in presence of bpf2bpf calls")
> Reported-by: Anatoly Trosinenko <anatoly.trosinenko@...il.com>
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>

Applied. Thanks