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our goal: automatically analyze the build system
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Classroom Contents
Finding Unmet Dependencies in Kconfig with the Kismet Static Analyzer
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- 1 linux works on lots of devices
- 2 the kernel is ultra-configurable
- 3 configurability makes maintenance harder
- 4 there's about 15,000 configuration options
- 5 written in about 150,000 lines of Kconfig
- 6 what does the build system do?
- 7 our goal: automatically analyze the build system
- 8 today's focus: Kconfig's unmet dependency bugs
- 9 kconfig language example
- 10 the unmet dependency bug
- 11 an unmet dependency bug in the wild
- 12 we first model Kconfig in symbol logic
- 13 we check every select for an unmet dependency
- 14 experimental setup
- 15 precision (true positives)
- 16 recall (false negatives)
- 17 performance
- 18 impact
- 19 student members of project team
- 20 conclusion
