Fuzz introspector: fuzz_unpack
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
80 4 msgpack.unpack call site: 00004 msgpack.fallback.Unpacker._unpack
9 86 msgpack.ext.Timestamp.__init__ call site: 00086 msgpack.ext.Timestamp.to_datetime

Fuzzer calltree

0 ...fuzz_unpack.TestOneInput [function] [call site] 00000
1 io.BytesIO [function] [call site] 00001
1 msgpack.unpack [function] [call site] 00002
2 stream.read [function] [call site] 00003
2 msgpack.fallback.unpackb [function] [call site] 00004
3 <builtin>.len [function] [call site] 00005
3 msgpack.fallback.Unpacker.__init__ [function] [call site] 00006
4 <builtin>.callable [function] [call site] 00007
4 <builtin>.bytearray [function] [call site] 00008
4 <builtin>.min [function] [call site] 00009
4 <builtin>.bool [function] [call site] 00010
4 <builtin>.bool [function] [call site] 00011
4 <builtin>.callable [function] [call site] 00012
4 <builtin>.callable [function] [call site] 00013
4 <builtin>.callable [function] [call site] 00014
4 <builtin>.callable [function] [call site] 00015
3 msgpack.fallback.Unpacker.feed [function] [call site] 00016
4 msgpack.fallback._get_data_from_buffer [function] [call site] 00017
5 <builtin>.memoryview [function] [call site] 00018
4 <builtin>.len [function] [call site] 00019
4 <builtin>.len [function] [call site] 00020
4 view.release [function] [call site] 00021
3 msgpack.fallback.Unpacker._unpack [function] [call site] 00022
4 msgpack.fallback.Unpacker._read_header [function] [call site] 00023
5 msgpack.fallback.Unpacker._reserve [function] [call site] 00024
6 <builtin>.len [function] [call site] 00025
6 <builtin>.len [function] [call site] 00026
6 <builtin>.max [function] [call site] 00027
6 <builtin>.isinstance [function] [call site] 00028
6 <builtin>.len [function] [call site] 00029
6 <builtin>.len [function] [call site] 00030
5 msgpack.fallback.Unpacker._read [function] [call site] 00031
6 msgpack.fallback.Unpacker._reserve [function] [call site] 00032
6 <builtin>.len [function] [call site] 00033
5 msgpack.fallback.Unpacker._reserve [function] [call site] 00034
5 <builtin>.len [function] [call site] 00035
5 struct.unpack_from [function] [call site] 00036
5 msgpack.fallback.Unpacker._read [function] [call site] 00037
5 msgpack.fallback.Unpacker._reserve [function] [call site] 00038
5 struct.unpack_from [function] [call site] 00039
5 msgpack.fallback.Unpacker._read [function] [call site] 00040
5 msgpack.fallback.Unpacker._reserve [function] [call site] 00041
5 <builtin>.len [function] [call site] 00042
5 struct.unpack_from [function] [call site] 00043
5 msgpack.fallback.Unpacker._reserve [function] [call site] 00044
5 struct.unpack_from [function] [call site] 00045
5 msgpack.fallback.Unpacker._reserve [function] [call site] 00046
5 <builtin>.len [function] [call site] 00047
5 struct.unpack_from [function] [call site] 00048
5 msgpack.fallback.Unpacker._read [function] [call site] 00049
5 msgpack.fallback.Unpacker._reserve [function] [call site] 00050
5 struct.unpack_from [function] [call site] 00051
5 msgpack.fallback.Unpacker._reserve [function] [call site] 00052
5 struct.unpack_from [function] [call site] 00053
4 <builtin>.range [function] [call site] 00054
4 msgpack.fallback.Unpacker._unpack [function] [call site] 00055
4 __pypy__.newlist_hint [function] [call site] 00056
4 <builtin>.range [function] [call site] 00057
4 msgpack.fallback.Unpacker._unpack [function] [call site] 00058
4 ret.append [function] [call site] 00059
4 <builtin>.tuple [function] [call site] 00060
4 <builtin>.range [function] [call site] 00061
4 msgpack.fallback.Unpacker._unpack [function] [call site] 00062
4 msgpack.fallback.Unpacker._unpack [function] [call site] 00063
4 msgpack.fallback.Unpacker._unpack [function] [call site] 00064
4 msgpack.fallback.Unpacker._unpack [function] [call site] 00065
4 <builtin>.range [function] [call site] 00066
4 <builtin>.range [function] [call site] 00067
4 msgpack.fallback.Unpacker._unpack [function] [call site] 00068
4 <builtin>.type [function] [call site] 00069
4 <builtin>.isinstance [function] [call site] 00070
4 sys.intern [function] [call site] 00071
4 msgpack.fallback.Unpacker._unpack [function] [call site] 00072
4 <builtin>.bytes [function] [call site] 00073
4 obj.decode [function] [call site] 00074
4 <builtin>.bytes [function] [call site] 00075
4 <builtin>.bytes [function] [call site] 00076
4 msgpack.ext.Timestamp.from_bytes [function] [call site] 00077
5 <builtin>.len [function] [call site] 00078
5 struct.unpack [function] [call site] 00079
5 <builtin>.len [function] [call site] 00080
5 struct.unpack [function] [call site] 00081
5 <builtin>.len [function] [call site] 00082
5 struct.unpack [function] [call site] 00083
5 msgpack.ext.Timestamp.__init__ [function] [call site] 00084
6 <builtin>.isinstance [function] [call site] 00085
6 <builtin>.isinstance [function] [call site] 00086
4 msgpack.ext.Timestamp.to_unix [function] [call site] 00087
4 msgpack.ext.Timestamp.to_unix_nano [function] [call site] 00088
4 msgpack.ext.Timestamp.to_datetime [function] [call site] 00089
5 datetime.datetime.fromtimestamp [function] [call site] 00090
5 datetime.timedelta [function] [call site] 00091
4 <builtin>.bytes [function] [call site] 00092
4 collections.namedtuple.__init__ [function] [call site] 00093
3 msgpack.fallback.Unpacker._got_extradata [function] [call site] 00094
4 <builtin>.len [function] [call site] 00095
2 _cmsgpack.unpackb [function] [call site] 00096