Fuzz introspector: fuzz_multipart
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
8 23 aiohttp.multipart.BodyPartReader.read_chunk call site: {node_id} chunk.split
7 0 EP call site: {node_id} ...aiohttp.fuzz_multipart.fuzz_bodypart_reader
7 79 multidict._multidict_py.MultiDict._extend call site: {node_id} multidict._multidict_py.CIMultiDict._title
6 71 multidict._multidict_py.MultiDict._extend call site: {node_id} used_keys.get
5 34 aiohttp.multipart.BodyPartReader.read call site: {node_id} aiohttp.multipart.BodyPartReader._decode_content
4 53 multidict._multidict_py.MultiDict._extend call site: {node_id} .list
2 10 aiohttp.multipart.BodyPartReader.read call site: {node_id} aiohttp.multipart.BodyPartReader._read_chunk_from_length
2 96 aiohttp.helpers.parse_mimetype call site: {node_id} multidict._multidict_py.MultiDictProxy.__init__
1 13 aiohttp.multipart.BodyPartReader.read_chunk call site: {node_id} .len
1 40 aiohttp.compression_utils.ZLibDecompressor.__init__ call site: {node_id} aiohttp.compression_utils.encoding_to_mode
1 42 aiohttp.compression_utils.ZLibDecompressor.__init__ call site: {node_id} aiohttp.compression_utils.ZLibDecompressor.decompress_sync
1 45 aiohttp.multipart.BodyPartReader.get_charset call site: {node_id} multidict._multidict_py.MultiDict.__init__

Fuzzer calltree

0 ...aiohttp.fuzz_multipart.TestOneInput [function] [call site] 00000
1 ...aiohttp.fuzz_multipart.fuzz_bodypart_reader [function] [call site] 00001
2 atheris.FuzzedDataProvider [function] [call site] 00002
2 fdp.ConsumeBytes [function] [call site] 00003
2 ...aiohttp.fuzz_multipart.FuzzStream.__init__ [function] [call site] 00004
3 io.BytesIO [function] [call site] 00005
2 aiohttp.multipart.BodyPartReader.at_eof [function] [call site] 00006
2 aiohttp.multipart.BodyPartReader.form [function] [call site] 00007
3 aiohttp.multipart.BodyPartReader.read [function] [call site] 00008
4 .bytearray [function] [call site] 00009
4 aiohttp.multipart.BodyPartReader.read_chunk [function] [call site] 00010
5 aiohttp.multipart.BodyPartReader._read_chunk_from_length [function] [call site] 00011
5 aiohttp.multipart.BodyPartReader._read_chunk_from_stream [function] [call site] 00013
5 encoding.lower [function] [call site] 00023
5 chunk.split [function] [call site] 00024
5 aiohttp.multipart.BodyPartReader.at_eof [function] [call site] 00026
5 over_chunk.split [function] [call site] 00030
4 data.extend [function] [call site] 00033
4 aiohttp.multipart.BodyPartReader.decode [function] [call site] 00034
5 aiohttp.multipart.BodyPartReader._decode_content_transfer [function] [call site] 00035
6 base64.b64decode [function] [call site] 00036
6 binascii.a2b_qp [function] [call site] 00037
5 aiohttp.multipart.BodyPartReader._decode_content [function] [call site] 00038
6 aiohttp.compression_utils.ZLibDecompressor.__init__ [function] [call site] 00039
7 aiohttp.compression_utils.encoding_to_mode [function] [call site] 00041
7 zlib.decompressobj [function] [call site] 00042
6 aiohttp.compression_utils.ZLibDecompressor.decompress_sync [function] [call site] 00043
3 aiohttp.multipart.BodyPartReader.get_charset [function] [call site] 00044
4 aiohttp.helpers.parse_mimetype [function] [call site] 00045
5 multidict._multidict_py.MultiDict.__init__ [function] [call site] 00046
6 multidict._multidict_py._Impl.__init__ [function] [call site] 00047
7 multidict._multidict_py._Impl.incr_version [function] [call site] 00048
6 multidict._multidict_py.MultiDict._extend [function] [call site] 00049
7 .isinstance [function] [call site] 00051
7 arg.items [function] [call site] 00053
7 kwargs.items [function] [call site] 00055
7 arg.extend [function] [call site] 00057
7 multidict._multidict_py.MultiDict._title [function] [call site] 00059
7 multidict._multidict_py.CIMultiDict._title [function] [call site] 00060
8 key.title [function] [call site] 00061
7 multidict._multidict_py.MultiDict._key [function] [call site] 00062
8 .isinstance [function] [call site] 00063
7 items.append [function] [call site] 00064
7 multidict._multidict_py.MultiDict._extend_items [function] [call site] 00065
8 multidict._multidict_py.MultiDict.add [function] [call site] 00066
9 multidict._multidict_py.MultiDict._title [function] [call site] 00067
9 multidict._multidict_py.CIMultiDict._title [function] [call site] 00068
9 multidict._multidict_py.MultiDict._key [function] [call site] 00069
9 multidict._multidict_py._Impl.incr_version [function] [call site] 00070
7 multidict._multidict_py.MultiDict._update_items [function] [call site] 00071
8 used_keys.get [function] [call site] 00072
8 used_keys.get [function] [call site] 00076
8 multidict._multidict_py._Impl.incr_version [function] [call site] 00077
7 multidict._multidict_py.MultiDict._extend_items [function] [call site] 00078
7 multidict._multidict_py.MultiDict._update_items [function] [call site] 00079
7 multidict._multidict_py.MultiDict._title [function] [call site] 00080
7 multidict._multidict_py.CIMultiDict._title [function] [call site] 00081
7 multidict._multidict_py.MultiDict._key [function] [call site] 00082
7 kwargs.items [function] [call site] 00083
5 _multidict.MultiDict [function] [call site] 00084
5 _multidict.MultiDictProxy [function] [call site] 00085
5 multidict._multidict_py.MultiDictProxy.__init__ [function] [call site] 00086
6 .isinstance [function] [call site] 00087
5 mimetype.split [function] [call site] 00088
5 multidict._multidict_py.MultiDict.__init__ [function] [call site] 00089
5 _multidict.MultiDict [function] [call site] 00090
5 item.partition [function] [call site] 00091
5 key.lower [function] [call site] 00092
5 value.strip [function] [call site] 00093
5 params.add [function] [call site] 00094
5 fulltype.partition [function] [call site] 00095
5 stype.partition [function] [call site] 00096
5 _multidict.MultiDictProxy [function] [call site] 00097
5 multidict._multidict_py.MultiDictProxy.__init__ [function] [call site] 00098
4 mimetype.parameters.get [function] [call site] 00099
3 data.rstrip [function] [call site] 00100
3 urllib.parse.parse_qsl [function] [call site] 00101
1 asyncio.run [function] [call site] 00102