netdev - Re: [PATCH v2 bpf-next] bpf: cgroup: Fix build error without CONFIG

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Date:   Mon, 8 Jul 2019 17:26:02 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     YueHaibing <yuehaibing@...wei.com>, ast@...nel.org, kafai@...com,
        songliubraving@...com, yhs@...com, sdf@...gle.com
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Subject: Re: [PATCH v2 bpf-next] bpf: cgroup: Fix build error without
 CONFIG_NET

On 07/03/2019 10:26 AM, YueHaibing wrote:
> If CONFIG_NET is not set and CONFIG_CGROUP_BPF=y,
> gcc building fails:
> 
> kernel/bpf/cgroup.o: In function `cg_sockopt_func_proto':
> cgroup.c:(.text+0x237e): undefined reference to `bpf_sk_storage_get_proto'
> cgroup.c:(.text+0x2394): undefined reference to `bpf_sk_storage_delete_proto'
> kernel/bpf/cgroup.o: In function `__cgroup_bpf_run_filter_getsockopt':
> (.text+0x2a1f): undefined reference to `lock_sock_nested'
> (.text+0x2ca2): undefined reference to `release_sock'
> kernel/bpf/cgroup.o: In function `__cgroup_bpf_run_filter_setsockopt':
> (.text+0x3006): undefined reference to `lock_sock_nested'
> (.text+0x32bb): undefined reference to `release_sock'
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Suggested-by: Stanislav Fomichev <sdf@...ichev.me>
> Fixes: 0d01da6afc54 ("bpf: implement getsockopt and setsockopt hooks")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>

Applied, thanks!