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llvm / libfuzzer / cc8ea96ba39801cf505c613c2d255959469ac974
commitcc8ea96ba39801cf505c613c2d255959469ac974[log] [tgz]
authorThurston Dang <thurston@google.com>Fri May 10 15:36:55 2024 -0700
committerCopybara-Service <copybara-worker@google.com>Fri May 10 17:21:47 2024 -0700
tree03ae5a8d2425559b9c0abcd21802fae066eec0a3
parentcb82c54e3144985924418c037845eee13a8b1393 [diff]
[libfuzzer] Prevent MSan false positive when printing log with -jobs (#91679)

libfuzzer's -jobs option will, depending on the number of CPUs, spin up
a
WorkerThread and end up printing the log file using CopyFileToErr.
This leads to an MSan false positive. This patch disables the MSan
interceptor checks,
similarly to other instances in https://reviews.llvm.org/D48891

Side-note: this false positive issue first appeared when printf()
was replaced by puts() (90b4d1bcb20180c591385131b12fa90d2e4860b1).
The interceptor check was always present; however, MSan does not
check_printf by default.
GitOrigin-RevId: d9ce33a0eea701719651dafbf88deae0ece96976
1 file changed
tree: 03ae5a8d2425559b9c0abcd21802fae066eec0a3
  1. afl/
  2. dataflow/
  3. scripts/
  4. standalone/
  5. tests/
  6. build.sh
  7. FuzzedDataProvider.h
  8. FuzzerBuiltins.h
  9. FuzzerBuiltinsMsvc.h
  10. FuzzerCommand.h
  11. FuzzerCorpus.h
  12. FuzzerCrossOver.cpp
  13. FuzzerDataFlowTrace.cpp
  14. FuzzerDataFlowTrace.h
  15. FuzzerDefs.h
  16. FuzzerDictionary.h
  17. FuzzerDriver.cpp
  18. FuzzerExtFunctions.def
  19. FuzzerExtFunctions.h
  20. FuzzerExtFunctionsDlsym.cpp
  21. FuzzerExtFunctionsWeak.cpp
  22. FuzzerExtFunctionsWindows.cpp
  23. FuzzerExtraCounters.cpp
  24. FuzzerExtraCountersDarwin.cpp
  25. FuzzerExtraCountersWindows.cpp
  26. FuzzerFlags.def
  27. FuzzerFork.cpp
  28. FuzzerFork.h
  29. FuzzerInterceptors.cpp
  30. FuzzerInterface.h
  31. FuzzerInternal.h
  32. FuzzerIO.cpp
  33. FuzzerIO.h
  34. FuzzerIOPosix.cpp
  35. FuzzerIOWindows.cpp
  36. FuzzerLoop.cpp
  37. FuzzerMain.cpp
  38. FuzzerMerge.cpp
  39. FuzzerMerge.h
  40. FuzzerMutate.cpp
  41. FuzzerMutate.h
  42. FuzzerOptions.h
  43. FuzzerPlatform.h
  44. FuzzerRandom.h
  45. FuzzerSHA1.cpp
  46. FuzzerSHA1.h
  47. FuzzerTracePC.cpp
  48. FuzzerTracePC.h
  49. FuzzerUtil.cpp
  50. FuzzerUtil.h
  51. FuzzerUtilDarwin.cpp
  52. FuzzerUtilFuchsia.cpp
  53. FuzzerUtilLinux.cpp
  54. FuzzerUtilPosix.cpp
  55. FuzzerUtilWindows.cpp
  56. FuzzerValueBitMap.h
  57. LICENSE.TXT
  58. README.txt