Re: [PATCH 1/2] [net-next] bpf: fix link error without CONFIG_NET

[Daniel Borkmann]

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@xxxxxxxx>

Acked-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>