Hot-patching Platform for Executable and Linkable Format Binary Application for System Resilience

Abstract

In modern society, software is ubiquitous and very complex and diverse. Examples of complex modern software include medical systems, flight systems, and high-reliability systems. A resilient system means a system that can continue to maintain or recover its function even if a problem occurs in the system. Elemental technologies of the resilience system include resistance, detection, reaction, and recovery. The combination of each technology constitutes a resilience system. In this paper, a hot-patching tool was designed and implemented as a recovery technique. Hot-patching is a technology that allows new features to be added and deleted without restarting the application. Based on this, an imprecise patch image was created and it was verified whether the application's computing resource usage could be dynamically adjusted using hot-patching. Through the experimental results, applicable mixed-criticality system example scenarios were described.