selftests/bpf: Add verifier test for d_path helper

[linux-2.6-microblaze.git] / tools / testing / selftests / bpf / test_verifier.c

diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index 78a6bae..9be395d 100644 (file)
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -114,6 +114,7 @@ struct bpf_test {
                bpf_testdata_struct_t retvals[MAX_TEST_RUNS];
        };
        enum bpf_attach_type expected_attach_type;
+       const char *kfunc;
 };
 
 /* Note we want this to be 64 bit aligned so that the end of our array is
@@ -984,8 +985,24 @@ static void do_test_single(struct bpf_test *test, bool unpriv,
                attr.log_level = 4;
        attr.prog_flags = pflags;
 
+       if (prog_type == BPF_PROG_TYPE_TRACING && test->kfunc) {
+               attr.attach_btf_id = libbpf_find_vmlinux_btf_id(test->kfunc,
+                                               attr.expected_attach_type);
+               if (attr.attach_btf_id < 0) {
+                       printf("FAIL\nFailed to find BTF ID for '%s'!\n",
+                               test->kfunc);
+                       (*errors)++;
+                       return;
+               }
+       }
+
        fd_prog = bpf_load_program_xattr(&attr, bpf_vlog, sizeof(bpf_vlog));
-       if (fd_prog < 0 && !bpf_probe_prog_type(prog_type, 0)) {
+
+       /* BPF_PROG_TYPE_TRACING requires more setup and
+        * bpf_probe_prog_type won't give correct answer
+        */
+       if (fd_prog < 0 && prog_type != BPF_PROG_TYPE_TRACING &&
+           !bpf_probe_prog_type(prog_type, 0)) {
                printf("SKIP (unsupported program type %d)\n", prog_type);
                skips++;
                goto close_fds;