CHIP MONITORING METHOD AND APPARATUS

Disclosed are a chip monitoring method and apparatus. The method is applicable to a chip including a first and second processing units. In this method, when accessing its security zone, the first processing unit stores access information in a shared memory, which includes an access-state identifier indicating whether it completes the access and a service-type identifier of the current access. The second processing unit starts timing when determining that the first processing unit accesses the security zone, and reads the access information from the shared memory. The second processing unit determines a service type with a fault in the first processing unit based on the service-type identifier in the access information, when determining that duration of the timing and execution duration required for the current access meet a preset size relationship and that the access-state identifier is a first identifier, thereby determining a cause of a fault.