IOError: [Errno 22] Invalid argument

[fgeek]

Fuzzed sample: http://bugs.fi/media/afl/enzyme/enzyme-002.mkv
Fuzzers used: http://lcamtuf.coredump.cx/afl/ https://bitbucket.org/jwilk/python-afl
SHA1: c0d136e71eb1c1b6b30741a33b00ff9a84f104f5

mkvinfo.py:

import sys
import enzyme
inputfile = sys.argv[1]
try:
    with open(inputfile, 'rb') as f:
        mkv = enzyme.MKV(f)
    print(mkv.info)
    print(mkv.video_tracks)
    print(mkv.audio_tracks)
except enzyme.exceptions.MalformedMKVError:
    pass

Traceback (most recent call last):
  File "mkvinfo.py", line 8, in <module>
    mkv = enzyme.MKV(f)
  File "/usr/local/lib/python2.7/dist-packages/enzyme-0.4.1-py2.7.egg/enzyme/mkv.py", line 54, in __init__
    self._parse_seekhead(seek_head, segment, stream, specs)
  File "/usr/local/lib/python2.7/dist-packages/enzyme-0.4.1-py2.7.egg/enzyme/mkv.py", line 73, in _parse_seekhead
    tracks = ebml.parse_element(stream, specs, True, ignore_element_names=['Void', 'CRC-32'])
  File "/usr/local/lib/python2.7/dist-packages/enzyme-0.4.1-py2.7.egg/enzyme/parsers/ebml/core.py", line 218, in parse_element
    element.data = parse(stream, specs, element.size, ignore_element_types, ignore_element_names, max_level)
  File "/usr/local/lib/python2.7/dist-packages/enzyme-0.4.1-py2.7.egg/enzyme/parsers/ebml/core.py", line 180, in parse
    element.data = parse(stream, specs, element.size, ignore_element_types, ignore_element_names, max_level)
  File "/usr/local/lib/python2.7/dist-packages/enzyme-0.4.1-py2.7.egg/enzyme/parsers/ebml/core.py", line 165, in parse
    element = parse_element(stream, specs)
  File "/usr/local/lib/python2.7/dist-packages/enzyme-0.4.1-py2.7.egg/enzyme/parsers/ebml/core.py", line 212, in parse_element
    stream.seek(element_size, 1)
IOError: [Errno 22] Invalid argument