test_fuzz: stray process left behind

[jwilk]

Sometimes test_fuzz.py leaves behind a stray process:

$ nosetests tests/test_fuzz.py
....
----------------------------------------------------------------------
Ran 4 tests in 0.533s

OK

$ ps -u $(whoami) -o pid,state,cmd | grep ' [T] '
7607 T /usr/bin/python /home/jwilk/python-afl/tests/target_persistent.py

CC: @danstender

[danstender]

I would have guessed it's the tests. Thx for getting into it.
Dan

[jwilk]

Simpler reproducer:

$ mkdir in out
$ echo moo > in/moo
$ timeout 1 py-afl-fuzz -i in -o out python tests/target_persistent.py

[jwilk]

It's a bug in AFL proper:
https://groups.google.com/d/topic/afl-users/E37s4YDti7o

I'll try to implement a work-around in the test suite.

[jwilk]

Work-around implemented in 6d6bac7.

I'll make a new release soon.

[jwilk]

I've just released python-afl 0.5.5, which includes the aforementioned work-around.