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Brazilian Symposium on Formal Methods

SBMF 2009: Formal Methods: Foundations and Applications pp 306–320Cite as

Verifying Compiled File System Code

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Part of the book series: Lecture Notes in Computer Science ((LNPSE,volume 5902))

Abstract

This paper presents a case study on retrospective verification of the Linux Virtual File System (VFS), which is aimed at checking for violations of API usage rules and memory properties. Since VFS maintains dynamic data structures and is written in a mixture of C and inlined assembly, modern software model checkers cannot be applied. Our case study centres around our novel verification tool, the SOCA Verifier, which symbolically executes and analyses compiled code. We describe how this verifier deals with complex program features such as memory access, pointer aliasing and computed jumps, while reducing manual modelling to the bare minimum. Our results show that the SOCA Verifier is capable of reliably analysing complex operating system components such as the Linux VFS, thereby going beyond traditional testing tools and into niches that current software model checkers do not reach.

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Author information

Authors and Affiliations

  1. Software Engineering and Programming Languages Research Group, University of Bamberg, 96052, Bamberg, Germany

    Jan Tobias Mühlberg & Gerald Lüttgen

Authors
  1. Jan Tobias Mühlberg
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  2. Gerald Lüttgen
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Editor information

Editors and Affiliations

  1. Departamento de Informática e Matemática Aplicada, Universidade Federal do Rio Grande do Norte, Campus Universitário, CEP: 59078-900, Lagoa Nova Natal, RN, Brasil

    Marcel Vinícius Medeiros Oliveira

  2. Department of Computer Science, University of York, Heslington, YO1 7BZ, York, UK

    Jim Woodcock

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Mühlberg, J.T., Lüttgen, G. (2009). Verifying Compiled File System Code. In: Oliveira, M.V.M., Woodcock, J. (eds) Formal Methods: Foundations and Applications. SBMF 2009. Lecture Notes in Computer Science, vol 5902. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10452-7_21

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  • DOI: https://doi.org/10.1007/978-3-642-10452-7_21

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-10451-0

  • Online ISBN: 978-3-642-10452-7

  • eBook Packages: Computer ScienceComputer Science (R0)

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