[PATCH bpf-next v2 07/10] selftests/bpf: test get_func_ip for fsession

Menglong Dong
2025-10-22T08:02:48Z

As the layout of the stack changed for fsession, we'd better test
bpf_get_func_ip() for it.

Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
---
.../selftests/bpf/prog_tests/get_func_ip_test.c | 2 ++
.../testing/selftests/bpf/progs/get_func_ip_test.c | 14 ++++++++++++++
2 files changed, 16 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c b/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c
index c40242dfa8fb..a9078a1dbb07 100644
--- a/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c
+++ b/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c
@@ -46,6 +46,8 @@ static void test_function_entry(void)
ASSERT_EQ(skel->bss->test5_result, 1, "test5_result");
ASSERT_EQ(skel->bss->test7_result, 1, "test7_result");
ASSERT_EQ(skel->bss->test8_result, 1, "test8_result");
+ ASSERT_EQ(skel->bss->test9_result1, 1, "test9_result1");
+ ASSERT_EQ(skel->bss->test9_result2, 1, "test9_result2");

cleanup:
get_func_ip_test__destroy(skel);
diff --git a/tools/testing/selftests/bpf/progs/get_func_ip_test.c b/tools/testing/selftests/bpf/progs/get_func_ip_test.c
index 2011cacdeb18..9acb79fc7537 100644
--- a/tools/testing/selftests/bpf/progs/get_func_ip_test.c
+++ b/tools/testing/selftests/bpf/progs/get_func_ip_test.c
@@ -103,3 +103,17 @@ int BPF_URETPROBE(test8, int ret)
test8_result = (const void *) addr == (const void *) uprobe_trigger;
return 0;
}
+
+__u64 test9_result1 = 0;
+__u64 test9_result2 = 0;
+SEC("fsession/bpf_fentry_test1")
+int BPF_PROG(test9, int a)
+{
+ __u64 addr = bpf_get_func_ip(ctx);
+
+ if (bpf_tracing_is_exit(ctx))
+ test9_result1 = (const void *) addr == &bpf_fentry_test1;
+ else
+ test9_result2 = (const void *) addr == &bpf_fentry_test1;
+ return 0;
+}
--
2.51.1.dirty