Static Race Detection for RTOS Applications

Authors Rishi Tulsyan, Rekha Pai, Deepak D'Souza

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Rishi Tulsyan
  • Indian Institute of Science Bangalore, India
Rekha Pai
  • Indian Institute of Science Bangalore, India
Deepak D'Souza
  • Indian Institute of Science Bangalore, India


The second author want to thank University Grants Commission (UGC) India for the Dr. DS Kothari Post Doctoral Fellowship EN/17-18/0039.

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Rishi Tulsyan, Rekha Pai, and Deepak D'Souza. Static Race Detection for RTOS Applications. In 40th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 182, pp. 57:1-57:20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


We present a static analysis technique for detecting data races in Real-Time Operating System (RTOS) applications. These applications are often employed in safety-critical tasks and the presence of races may lead to erroneous behaviour with serious consequences. Analyzing these applications is challenging due to the variety of non-standard synchronization mechanisms they use. We propose a technique based on the notion of an "occurs-in-between" relation between statements. This notion enables us to capture the interplay of various synchronization mechanisms. We use a pre-analysis and a small set of not-occurs-in-between patterns to detect whether two statements may race with each other. Our experimental evaluation shows that the technique is efficient and effective in identifying races with high precision.

Subject Classification

ACM Subject Classification
  • Software and its engineering → Formal software verification
  • Static analysis
  • concurrency
  • data-race detection
  • RTOS


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