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Message-ID: <59FB9D06.5010400@iogearbox.net>
Date:   Thu, 02 Nov 2017 23:32:38 +0100
From:   Daniel Borkmann <daniel@iogearbox.net>
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To:     Arnd Bergmann <arnd@arndb.de>, Alexei Starovoitov <ast@kernel.org>
CC:     "David S. Miller" <davem@davemloft.net>,
        Edward Cree <ecree@solarflare.com>,
        John Fastabend <john.fastabend@gmail.com>,
        Jakub Kicinski <jakub.kicinski@netronome.com>,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] [net-next] bpf: fix link error without CONFIG_NET
References: <20171102110558.2746221-1-arnd@arndb.de>
In-Reply-To: <20171102110558.2746221-1-arnd@arndb.de>
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On 11/02/2017 12:05 PM, Arnd Bergmann wrote:
> I ran into this link error with the latest net-next plus linux-next
> trees when networking is disabled:
>
> kernel/bpf/verifier.o:(.rodata+0x2958): undefined reference to `tc_cls_act_analyzer_ops'
> kernel/bpf/verifier.o:(.rodata+0x2970): undefined reference to `xdp_analyzer_ops'
>
> It seems that the code was written to deal with varying contents of
> the arrray, but the actual #ifdef was missing. Both tc_cls_act_analyzer_ops
> and xdp_analyzer_ops are defined in the core networking code, so adding
> a check for CONFIG_NET seems appropriate here, and I've verified this with
> many randconfig builds
>
> Fixes: 4f9218aaf8a4 ("bpf: move knowledge about post-translation offsets out of verifier")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Acked-by: Daniel Borkmann <daniel@iogearbox.net>

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