exception when running angora with -i - (restart)

[angorafuzzer]

exception when running angora with -i - (restart)

[spinpx]

Hi @hexcoder- . I can't reproduce this issue in binutils and file program. Can your provide the program you tested?
The logs shows that the fuzzer can not find any new branch. Can you make sure:

• the tested program is instrumented.
• Can you use RUST_LOC=info,(angora/angora_fuzzer will use it) and see that the log " INFO angora::depot::sync > sync xx file from seeds." to make sure xx is not 0. If it is 0, then please check output/queue.

I tested in file by Re-run

[hexcoder-]

I updated the docker image, and tried again. First with -input i, then after 5 seconds I terminated it. Angora showed 15 paths found, but output/queue is empty then! I don't understand why.

I repeated the runs and let it run a bit longer with -i i. Then I saw that angora created alternative output directories o.1, o.2, ... and also in this format o.2019-01-10T07:18:00.792939624+00:00, which contained queue entries, but these were not found when -o o was given when restarting (leading to the error message).

The program translit is from schilytools (https://sourceforge.net/projects/schilytools/files/schily-2018-12-21.tar.bz2/download) and is like tr. I compiled once with SUBARCH=fast_ and once with SUBARCH=_taint in order to get the executables separated in different subdirectories.

[spinpx]

o.1 is created because o directory is existed. I removed the code, and give a panic error with warning directly now. 6f125af
The logic of restart is rename the output directory o to o.2019-01-10T07:18:00.792939624+00:00 (extend with timestamp). Then use its queue directory as seed directory.

Angora/fuzzer/src/depot/depot_dir.rs

Lines 27 to 34 in 6f125af

	let seeds_dir = if restart {
	let orig_out_dir = out_dir.with_extension(Local::now().to_rfc3339());
	fs::rename(&out_dir, orig_out_dir.clone()).unwrap();
	fs::create_dir(&out_dir).unwrap();
	PathBuf::from(orig_out_dir).join(INPUTS_DIR)
	} else {
	PathBuf::from(in_dir)
	};

I still can't find the reason now. I hope these can help you.