diff options
| author | Stanislav Fomichev <sdf@google.com> | 2019-04-12 01:47:07 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-04-12 01:53:00 +0300 |
| commit | 947e8b595b82d3551750641445d0a97b8f29b536 (patch) | |
| tree | 24574cb59c6ba3a5455d910bfeff35af084f8316 | |
| parent | 6b7a21140fca461c6d8d5c65a3746e7da50a409e (diff) | |
| download | linux-947e8b595b82d3551750641445d0a97b8f29b536.tar.xz | |
bpf: explicitly prohibit ctx_{in, out} in non-skb BPF_PROG_TEST_RUN
This should allow us later to extend BPF_PROG_TEST_RUN for non-skb case
and be sure that nobody is erroneously setting ctx_{in,out}.
Fixes: b0b9395d865e ("bpf: support input __sk_buff context in BPF_PROG_TEST_RUN")
Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
| -rw-r--r-- | net/bpf/test_run.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index cbd4fb65aa4f..2221573dacdb 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -347,6 +347,9 @@ int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr, void *data; int ret; + if (kattr->test.ctx_in || kattr->test.ctx_out) + return -EINVAL; + data = bpf_test_init(kattr, size, XDP_PACKET_HEADROOM + NET_IP_ALIGN, 0); if (IS_ERR(data)) return PTR_ERR(data); @@ -390,6 +393,9 @@ int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog, if (prog->type != BPF_PROG_TYPE_FLOW_DISSECTOR) return -EINVAL; + if (kattr->test.ctx_in || kattr->test.ctx_out) + return -EINVAL; + data = bpf_test_init(kattr, size, NET_SKB_PAD + NET_IP_ALIGN, SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); if (IS_ERR(data)) |