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Cómo pedir trabajo con esta skill instalada
Instalar la skill da un método a tu IA. Tu petición todavía debe aportar los hechos del caso, las restricciones y el entregable esperado.
Describe la decisión o el entregable, no solo el tema.
Añade materiales, público, límites y hechos conocidos.
Fija formato, criterios de calidad y comprobaciones.
Cuándo usarla
| Fuzzer | Best For | Complexity | |--------|----------|------------| | libFuzzer | Quick setup, single-project fuzzing | Low | | AFL++ | Multi-core fuzzing, diverse mutations | Medium | | LibAFL | Custom fuzzers, research projects | High | | Honggfuzz | Hardware-based coverage | Medium |
Choose libFuzzer when:
- You need a simple, quick setup for C/C++ code
- Project uses Clang for compilation
- Single-core fuzzing is sufficient initially
- Transitioning to AFL++ later is an option (harnesses are compatible)
Note: Fuzzing harnesses written for libFuzzer are compatible with AFL++, making it easy to transition if you need more advanced features like better multi-core support.
Errores que conviene evitar
| Problem | Cause | Solution | |---------|-------|----------| | No crashes found after hours | Poor corpus, low coverage | Add seed inputs, use dictionary, check harness | | Very slow executions/sec (<100) | Target too complex, excessive logging | Optimize target, use -close_fd_mask=3, reduce logging | | Out of memory | ASan's 20TB virtual memory | Set -rss_limit_mb=0 to disable RSS limit | | Fuzzer stops after first crash | Default behavior | Use -fork=1 -ignore_crashes=1 to continue | | Can't reproduce crash | Non-determinism in harness/target | Remove random number generation, global state | | Linking errors with -fsanitize=fuzzer | Missing libFuzzer runtime | Ensure using Clang, check LLVM installation | | GCC project won't compile with Clang | GCC-specific code | Switch to AFL++ with gcc_plugin instead | | Coverage not improving | Corpus plateau | Run longer, add dictionary, improve seeds, check coverage report | | Crashes but ASan doesn't trigger | Memory error not detected without ASan | Recompile with -fsanitize=address |