diff options
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/log_fixup.c | 31 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_log_fixup.c | 10 |
2 files changed, 41 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/log_fixup.c b/tools/testing/selftests/bpf/prog_tests/log_fixup.c index bc27170bdeb0..dba71d98a227 100644 --- a/tools/testing/selftests/bpf/prog_tests/log_fixup.c +++ b/tools/testing/selftests/bpf/prog_tests/log_fixup.c @@ -135,6 +135,35 @@ cleanup: test_log_fixup__destroy(skel); } +static void missing_kfunc(void) +{ + char log_buf[8 * 1024]; + struct test_log_fixup* skel; + int err; + + skel = test_log_fixup__open(); + if (!ASSERT_OK_PTR(skel, "skel_open")) + return; + + bpf_program__set_autoload(skel->progs.use_missing_kfunc, true); + bpf_program__set_log_buf(skel->progs.use_missing_kfunc, log_buf, sizeof(log_buf)); + + err = test_log_fixup__load(skel); + if (!ASSERT_ERR(err, "load_fail")) + goto cleanup; + + ASSERT_HAS_SUBSTR(log_buf, + "0: <invalid kfunc call>\n" + "kfunc 'bpf_nonexistent_kfunc' is referenced but wasn't resolved\n", + "log_buf"); + + if (env.verbosity > VERBOSE_NONE) + printf("LOG: \n=================\n%s=================\n", log_buf); + +cleanup: + test_log_fixup__destroy(skel); +} + void test_log_fixup(void) { if (test__start_subtest("bad_core_relo_trunc_none")) @@ -147,4 +176,6 @@ void test_log_fixup(void) bad_core_relo_subprog(); if (test__start_subtest("missing_map")) missing_map(); + if (test__start_subtest("missing_kfunc")) + missing_kfunc(); } diff --git a/tools/testing/selftests/bpf/progs/test_log_fixup.c b/tools/testing/selftests/bpf/progs/test_log_fixup.c index 60450cb0e72e..1bd48feaaa42 100644 --- a/tools/testing/selftests/bpf/progs/test_log_fixup.c +++ b/tools/testing/selftests/bpf/progs/test_log_fixup.c @@ -61,4 +61,14 @@ int use_missing_map(const void *ctx) return value != NULL; } +extern int bpf_nonexistent_kfunc(void) __ksym __weak; + +SEC("?raw_tp/sys_enter") +int use_missing_kfunc(const void *ctx) +{ + bpf_nonexistent_kfunc(); + + return 0; +} + char _license[] SEC("license") = "GPL"; |