关键词: 自愈操作系统, 故障监测, 内核动态追踪

Abstract: Code segments about dynamic memory allocation and resource preemption operations are the major source of operating system faults. This paper provides a new fault detection technique based on dynamic kernel tracing, by collecting information about the call stack of kernel and global state transition, the fault source and type can be specified. The fault detection technique is implemented as loadable kernel module in Linux, which can collect kernel information effectively without additional hardware and modification of original system code. Results of fault injection experiments can prove that the proposed technique can detect faults effectively and the detection delay is smaller than former methods based on time-out and performance metrics.

Key words: self-healing operating system, fault detection, dynamic kernel tracing