Automated atomicity-violation fixing

Guoliang Jin, Linhai Song, Wei Zhang, Shan Lu, Ben Liblit

Research output: Chapter in Book/Report/Conference proceedingConference contribution

149 Scopus citations


Fixing software bugs has always been an important and time-consuming process in software development. Fixing concurrency bugs has become especially critical in the multicore era. However, fixing concurrency bugs is challenging, in part due to non-deterministic failures and tricky parallel reasoning. Beyond correctly fixing the original problem in the software, a good patch should also avoid introducing new bugs, degrading performance unnecessarily, or damaging software readability. Existing tools cannot automate the whole fixing process and provide good-quality patches. We present AFix, a tool that automates the whole process of fixing one common type of concurrency bug: single-variable atomicity violations. AFix starts from the bug reports of existing bug-detection tools. It augments these with static analysis to construct a suitable patch for each bug report. It further tries to combine the patches of multiple bugs for better performance and code readability. Finally, AFix's run-time component provides testing customized for each patch. Our evaluation shows that patches automatically generated by AFix correctly eliminate six out of eight real-world bugs and significantly decrease the failure probability in the other two cases. AFix patches never introduce new bugs and usually have similar performance to manually-designed patches.

Original languageEnglish (US)
Title of host publicationPLDI'11 - Proceedings of the 2011 ACM Conference on Programming Language Design and Implementation
Number of pages12
StatePublished - 2011
Event32nd ACM SIGPLAN Conference on Programming Language Design and Implementation, PLDI'11 - San Jose, CA, United States
Duration: Jun 4 2011Jun 8 2011

Publication series

NameProceedings of the ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI)


Other32nd ACM SIGPLAN Conference on Programming Language Design and Implementation, PLDI'11
CountryUnited States
CitySan Jose, CA

All Science Journal Classification (ASJC) codes

  • Software

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