Information processing system, imformation processing method, and non-transitory computer readable medium

An information processing method for causing a monitor in an information processing system to operate, the information processing system including:

• a functional module;
• a module control processor configured to control the functional module;
• the monitor that monitors a state of register access from the module control processor to the functional module and detects an anomaly in the module control processor;
• and
• a principal processor configured to, when an anomaly in the module control processor is detected by the monitor, perform recovery processing for the information processing system,
• the method comprising:
• comparing expected value data in which at least part of access order, protocol, address, and data content for register access from the module control processor to the functional module is omitted with access order, protocol, access address, and data content in register access from the module control processor to the functional module;
• and
• in a case where results of the comparison do not match, detecting occurrence of an anomaly in the module control processor.

A non-transitory computer readable medium storing a program causing a monitor in an information processing system to operate, the information processing system including:

• a functional module;
• a module control processor configured to control the functional module;
• the monitor that monitors a state of register access from the module control processor to the functional module and detects an anomaly in the module control processor;
• and
• a principal processor configured to, when an anomaly in the module control processor is detected by the monitor, perform recovery processing for the information processing system,
• the program causing the monitor to execute a process comprising:
• comparing expected value data in which at least part of access order, protocol, address, and data content for register access from the module control processor to the functional module is omitted with access order, protocol, access address, and data content in register access from the module control processor to the functional module;
• and
• in a case where results of the comparison do not match, detecting occurrence of an anomaly in the module control processor.