A Virtual Fault Injection Framework for Reliability-Aware Software Development

Andrea Höller, Georg Macher, T. Rauter, Johannes Iber, Christian Kreiner
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引用次数: 26

Abstract

Ever more dependable embedded systems are built with commercial off-the-shelf hardware components that are not intended for highly reliable applications. Consequently, software-based fault tolerance techniques have to maintain a safe operation despite underlying hardware faults. In order to efficiently develop fault tolerant software, fault injection is needed in early development stages. However, common fault injection approaches require manufactured products or detailed hardware models. Thus, these techniques are typically not applicable if software and hardware providers are separate vendors. Additionally, the rise of third-party OTS software components limits the means to inject faults. In this paper, we present a virtual fault injection framework that simulates safety-standard aligned fault models and supports OTS software components as well as widely-used embedded processors such as ARM cores. Additionally, we show how to integrate the framework into various software development stages. Finally, we illustrate the practicability of the approach by exemplifying the integration of the framework in the development of an industrial safety-critical system.
面向可靠性感知软件开发的虚拟故障注入框架
更可靠的嵌入式系统是用商用现成的硬件组件构建的,而这些硬件组件并不打算用于高可靠性的应用程序。因此,基于软件的容错技术必须在底层硬件故障的情况下保持安全运行。为了高效地开发容错软件,需要在软件开发的早期进行故障注入。然而,常见的故障注入方法需要成品或详细的硬件模型。因此,如果软件和硬件供应商是独立的供应商,这些技术通常不适用。此外,第三方OTS软件组件的兴起限制了注入故障的手段。在本文中,我们提出了一个虚拟故障注入框架,它模拟了安全标准对齐的故障模型,并支持OTS软件组件以及广泛使用的嵌入式处理器(如ARM内核)。此外,我们还展示了如何将框架集成到不同的软件开发阶段。最后,我们通过举例说明该框架在工业安全关键系统开发中的集成来说明该方法的实用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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