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A Practical Verification Framework for Preemptive OS Kernels

  • Fengwei Xu
  • Ming FuEmail author
  • Xinyu Feng
  • Xiaoran Zhang
  • Hui Zhang
  • Zhaohui Li
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9780)

Abstract

We propose a practical verification framework for preemptive OS kernels. The framework models the correctness of API implementations in OS kernels as contextual refinement of their abstract specifications. It provides a specification language for defining the high-level abstract model of OS kernels, a program logic for refinement verification of concurrent kernel code with multi-level hardware interrupts, and automated tactics for developing mechanized proofs. The whole framework is developed for a practical subset of the C language. We have successfully applied it to verify key modules of a commercial preemptive OS \(\mu \text {C/OS-II}\) [2], including the scheduler, interrupt handlers, message queues, and mutexes etc. We also verify the priority-inversion-freedom (PIF) in \(\mu \text {C/OS-II}\). All the proofs are mechanized in Coq. To our knowledge, our work is the first to verify the functional correctness of a practical preemptive OS kernel with machine-checkable proofs.

Keywords

Program Logic System APIs Message Queue Kernel Code Interrupt Handler 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Fengwei Xu
    • 1
    • 2
  • Ming Fu
    • 1
    • 2
    Email author
  • Xinyu Feng
    • 1
    • 2
  • Xiaoran Zhang
    • 1
    • 2
  • Hui Zhang
    • 1
    • 2
  • Zhaohui Li
    • 1
    • 2
  1. 1.School of Computer Science and TechnologyUniversity of Science and Technology of ChinaHefeiChina
  2. 2.Suzhou Institute for Advanced StudyUniversity of Science and Technology of ChinaSuzhouChina

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