JNIEnv->GetMethodID leads a crash

Question

jclass clazz_obj = jni_env->GetObjectClass(klazz);
    
jmethodID mid = jni_env->GetMethodID(clazz_obj, "getName", "()Ljava/lang/String;");

This is the stacktrace:

V [libjvm.so+0x74e290] JvmtiRawMonitor::is_valid()+0x0

C [libVWave.so+0x73cd0] JNIEnv_::GetMethodID(_jclass*, char const*, char const*)+0x3c

I want to get the full name of a class. However, jvmti doesn't have this API. I try to do this in MethodEntry CallBack to get the full name by JNI.