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AngoraFuzzer / Angora

Angora is a mutation-based fuzzer. The main goal of Angora is to increase branch coverage by solving path constraints without symbolic execution.
Apache License 2.0
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Cannot run multiple instances of Angora. #105

Closed zhanggenex closed 3 years ago

zhanggenex commented 3 years ago

I succesfully started one instance of angora. But when I started the second one, the following error message came out:

thread 'main' panicked at 'Output directory has existed!: Os { code: 17, kind: AlreadyExists, message: "File exists" }', src/libcore/result.rs:1188:5 stack backtrace: 0: ::fmt 1: core::fmt::write 2: std::io::Write::write_fmt 3: std::panicking::default_hook::{{closure}} 4: std::panicking::default_hook 5: std::panicking::rust_panic_with_hook 6: rust_begin_unwind 7: core::panicking::panic_fmt 8: core::result::unwrap_failed 9: angora::fuzz_main::fuzz_main 10: fuzzer::main 11: std::rt::lang_start::{{closure}} 12: std::panicking::try::do_call 13: __rust_maybe_catch_panic 14: std::rt::lang_start_internal 15: main 16: __libc_start_main 17: _start note: Some details are omitted, run with RUST_BACKTRACE=full for a verbose backtrace.

DataCorrupted commented 3 years ago

This error msg locates back to fuzz_main.rs:130.

This is not a bug but a feature. Angora won't allow you to have multiple fuzzers dumping to the same directory. Please try -o <dir> to specify different output directories for different fuzzers to prevent this.