selftests/harness: Add 30 second timeout per test

In order to keep tests from hanging forever, this adds an alarm signal
to each test run. This assumes an individual test doesn't take longer
than 30 seconds.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index 2d90c98..941d939 100644 (file)
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -696,6 +696,7 @@ void __run_test(struct __test_metadata *t)
        t->passed = 1;
        t->trigger = 0;
        printf("[ RUN      ] %s\n", t->name);
+       alarm(30);
        child_pid = fork();
        if (child_pid < 0) {
                printf("ERROR SPAWNING TEST CHILD\n");
@@ -744,6 +745,7 @@ void __run_test(struct __test_metadata *t)
                }
        }
        printf("[     %4s ] %s\n", (t->passed ? "OK" : "FAIL"), t->name);
+       alarm(0);
 }
 
 static int test_harness_run(int __attribute__((unused)) argc,