[PATCH v2 1/2] selftests/bpf: bpf_cookie: skip kprobe_multi tests without bpf_testmod

Sun Jian
2026-02-28T07:46:18Z

The kprobe_multi subtests rely on bpf_testmod fentry ksyms.

When bpf_testmod isn't available, libbpf fails to resolve
bpf_testmod_fentry_test* and skeleton load fails with -ESRCH, causing
false failures.

Skip these subtests when env.has_testmod is false.

Signed-off-by: Sun Jian <sun.jian.kdev@gmail.com>

---
Changes in v2:

No functional change.

Drop the unrelated perf_event_open() argument change from this patch
(moved to patch 2/2).

v1: <https://lore.kernel.org/lkml/20260227164037.84110-1-sun.jian.kdev@gmail.com/>
---
tools/testing/selftests/bpf/prog_tests/bpf_cookie.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c
index 75f4dff7d042..b7643a5bf7ad 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c
@@ -105,6 +105,11 @@ static void kprobe_multi_link_api_subtest(void)
unsigned long long addrs[8];
__u64 cookies[8];

+ if (!env.has_testmod) {
+ test__skip();
+ return;
+ }
+
if (!ASSERT_OK(load_kallsyms(), "load_kallsyms"))
goto cleanup;

@@ -192,6 +197,11 @@ static void kprobe_multi_attach_api_subtest(void)
};
__u64 cookies[8];

+ if (!env.has_testmod) {
+ test__skip();
+ return;
+ }
+
skel = kprobe_multi__open_and_load();
if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
goto cleanup;
--
2.43.0