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| author | Arnd Bergmann <arnd@arndb.de> | 2017-11-02 12:05:51 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-03 14:20:22 +0900 |
| commit | 7cce782ef32f5003c18ab8f9f586f2ed5ce2c33e (patch) | |
| tree | 1daa70e8a2317ba6ffdff83c7bd0c076717e4774 /kernel | |
| parent | 054287295b1132c8742ea55f8e3af9cbd630c932 (diff) | |
| download | linux-7cce782ef32f5003c18ab8f9f586f2ed5ce2c33e.tar.bz2 | |
bpf: fix link error without CONFIG_NET
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: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/verifier.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 530b68550fd2..5f3799dcba01 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -4588,8 +4588,10 @@ err_free_env: } static const struct bpf_verifier_ops * const bpf_analyzer_ops[] = { +#ifdef CONFIG_NET [BPF_PROG_TYPE_XDP] = &xdp_analyzer_ops, [BPF_PROG_TYPE_SCHED_CLS] = &tc_cls_act_analyzer_ops, +#endif }; int bpf_analyzer(struct bpf_prog *prog, const struct bpf_ext_analyzer_ops *ops, |