netdev - Re: [PATCH bpf-next] bpf: Enforce 'return 0' in BTF-enabled raw

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Message-ID: <20191030155318.GB2675@pc-63.home>
Date:   Wed, 30 Oct 2019 16:53:18 +0100
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Alexei Starovoitov <ast@...nel.org>
Cc:     davem@...emloft.net, netdev@...r.kernel.org, bpf@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH bpf-next] bpf: Enforce 'return 0' in BTF-enabled raw_tp
 programs

On Mon, Oct 28, 2019 at 08:24:26PM -0700, Alexei Starovoitov wrote:
> The return value of raw_tp programs is ignored by __bpf_trace_run()
> that calls them. The verifier also allows any value to be returned.
> For BTF-enabled raw_tp lets enforce 'return 0', so that return value
> can be used for something in the future.
> 
> Signed-off-by: Alexei Starovoitov <ast@...nel.org>

Applied, thanks!