Kernel Module Signature Test Documentation Usage: ./modsign_test.sh [-n | --nominal] [-r | --repeatability] [-a | --adversarial] [-s | --stress] Runs the basic module signature verification test. TEST DESCRITION: The test verifies that for a kernel with module signature configs enabled: * only signed modules can get loaded into the kernel & not the unsigned ones. * signed module fails to load after being edited. * signed module gets loaded successfully after reverting any edits made to it. TARGETS: The test is supported on all targets with the module signature configs enabled. NOTES: On Android adb shell, busybox installation is required for test to run, since the test uses utilities like grep, sed, etc.