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llvm / libfuzzer / 1089980117405ece539d5f84bed7fd56f95fb0c8
commit1089980117405ece539d5f84bed7fd56f95fb0c8[log] [tgz]
authorMin <45393763+MinxuanZ@users.noreply.github.com>Tue Nov 12 11:12:30 2024 +0800
committerCopybara-Service <copybara-worker@google.com>Mon Nov 11 19:15:56 2024 -0800
tree3256757a26010376fca2757a4a04fe5839c6ae13
parent54b84d597ea44ec477cc5905bb3962f717a381f8 [diff]
[libfuzzer] use timer_create() instead of setitimer() for linux (#110274)

SetTimer() now uses setitimer() to sending SIGALRM every `
UnitTimeoutSec/2 + 1` s
Set UnitTimeoutSec with the `-timeout=` option

"POSIX.1-2008 marks getitimer() and setitimer() obsolete" and also has
some issues regarding accuracy of the timers under load . See
https://linux.die.net/man/2/setitimer.
I propose using timer_create() and sigaction() ,See
http://man7.org/linux/man-pages/man2/timer_create.2.html

# test result on my x86_64 linux
`make check-fuzzer`

![image](https://github.com/user-attachments/assets/19b4e073-16a5-4daa-95ed-2cf4830c042f)

GitOrigin-RevId: 3b29a8a00809e868e3df7e687695670ff5077fbd
1 file changed
tree: 3256757a26010376fca2757a4a04fe5839c6ae13
  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