[PATCH bpf] selftests/bpf: Fix cgroup sockopt verifier test

[Jean-Philippe Brucker]

Since the BPF_PROG_TYPE_CGROUP_SOCKOPT verifier test does not set an
attach type, bpf_prog_load_check_attach() disallows loading the program
and the test is always skipped:

 #434/p perfevent for cgroup sockopt SKIP (unsupported program type 25)

Fix the issue by setting a valid attach type.

Fixes: 0456ea170cd6 ("bpf: Enable more helpers for 
BPF_PROG_TYPE_CGROUP_{DEVICE,SYSCTL,SOCKOPT}")
Signed-off-by: Jean-Philippe Brucker <jean-phili...@linaro.org>
---
 tools/testing/selftests/bpf/verifier/event_output.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/bpf/verifier/event_output.c 
b/tools/testing/selftests/bpf/verifier/event_output.c
index 99f8f582c02b..c5e805980409 100644
--- a/tools/testing/selftests/bpf/verifier/event_output.c
+++ b/tools/testing/selftests/bpf/verifier/event_output.c
@@ -112,6 +112,7 @@
        "perfevent for cgroup sockopt",
        .insns =  { __PERF_EVENT_INSNS__ },
        .prog_type = BPF_PROG_TYPE_CGROUP_SOCKOPT,
+       .expected_attach_type = BPF_CGROUP_SETSOCKOPT,
        .fixup_map_event_output = { 4 },
        .result = ACCEPT,
        .retval = 1,
-- 
2.27.0