Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
53	12	dulwich.pack.pack_objects_to_data	call site: {node_id}	dulwich.pack.deltify_pack_objects
20	84	dulwich.pack.PackChunkGenerator._pack_data_chunks	call site: {node_id}	dulwich.pack.pack_object_chunks
16	163	...dulwich.fuzzing.fuzz-targets.fuzz_bundle.TestOneInput	call site: {node_id}	dulwich.bundle._read_bundle
10	126	dulwich.pack.read_pack_header	call site: {node_id}	dulwich.pack.PackStreamReader._buf_len
6	66	dulwich.pack.pack_objects_to_data	call site: {node_id}	dulwich.pack.full_unpacked_object
6	156	dulwich.bundle.write_bundle	call site: {node_id}	dulwich.pack.write_pack_data
4	137	dulwich.pack.read_pack_header	call site: {node_id}	dulwich.contrib.swift.SwiftPackReader.read
2	6	...dulwich.fuzzing.fuzz-targets.fuzz_bundle.TestOneInput	call site: {node_id}	test_utils.EnhancedFuzzedDataProvider.ConsumeRandomString
1	73	dulwich.pack.write_pack_objects	call site: {node_id}	dulwich.pack.PackChunkGenerator.__iter__
1	77	dulwich.pack.PackChunkGenerator.__init__	call site: {node_id}	.len
1	113	dulwich.pack.PackData.from_file	call site: {node_id}	dulwich.file.GitFile
1	117	dulwich.file._GitFile.__init__	call site: {node_id}	.getattr

Fuzzer calltree


         ...dulwich.fuzzing.fuzz-targets.fuzz_bundle.TestOneInput

[function] [call site] 00000


           test_utils.EnhancedFuzzedDataProvider

[function] [call site] 00001


           test_utils.EnhancedFuzzedDataProvider.PickValueInList

[function] [call site] 00002


           test_utils.EnhancedFuzzedDataProvider.ConsumeRandomString

[function] [call site] 00003


           test_utils.EnhancedFuzzedDataProvider.ConsumeBytes

[function] [call site] 00004


           test_utils.EnhancedFuzzedDataProvider.ConsumeBytes

[function] [call site] 00005


           test_utils.EnhancedFuzzedDataProvider.ConsumeRandomBytes

[function] [call site] 00006


           test_utils.EnhancedFuzzedDataProvider.ConsumeRandomString

[function] [call site] 00007


           test_utils.EnhancedFuzzedDataProvider.ConsumeRandomString

[function] [call site] 00008


           io.BytesIO

[function] [call site] 00009


           dulwich.pack.write_pack_objects

[function] [call site] 00010


             dulwich.pack.pack_objects_to_data

[function] [call site] 00011


               <builtin>.len

[function] [call site] 00012


               dulwich.pack.deltify_pack_objects

[function] [call site] 00013


                 dulwich.pack.deltas_from_sorted_objects

[function] [call site] 00014


                   collections.deque

[function] [call site] 00015


                   <builtin>.enumerate

[function] [call site] 00016


                   o.as_raw_chunks

[function] [call site] 00017


                   <builtin>.map

[function] [call site] 00018


                   <builtin>.sum

[function] [call site] 00019


                   dulwich.pack.create_delta

[function] [call site] 00020


                     <builtin>.isinstance

[function] [call site] 00021


                     <builtin>.isinstance

[function] [call site] 00022


                     <builtin>.isinstance

[function] [call site] 00023


                     <builtin>.isinstance

[function] [call site] 00024


                     <builtin>.len

[function] [call site] 00025


                     dulwich.pack._delta_encode_size

[function] [call site] 00026


                       <builtin>.bytearray

[function] [call site] 00027


                       ret.append

[function] [call site] 00028


                       ret.append

[function] [call site] 00029


                       <builtin>.bytes

[function] [call site] 00030


                     <builtin>.len

[function] [call site] 00031


                     dulwich.pack._delta_encode_size

[function] [call site] 00032


                     difflib.SequenceMatcher

[function] [call site] 00033


                     cdifflib.CSequenceMatcher

[function] [call site] 00034


                     difflib.SequenceMatcher.get_opcodes

[function] [call site] 00035


                     <builtin>.min

[function] [call site] 00036


                     dulwich.pack._encode_copy_operation

[function] [call site] 00037


                       <builtin>.bytearray

[function] [call site] 00038


                       <builtin>.range

[function] [call site] 00039


                       scratch.append

[function] [call site] 00040


                       <builtin>.range

[function] [call site] 00041


                       scratch.append

[function] [call site] 00042


                       <builtin>.bytes

[function] [call site] 00043


                     <builtin>.bytes

[function] [call site] 00044


                     <builtin>.memoryview

[function] [call site] 00045


                     <builtin>.bytes

[function] [call site] 00046


                     <builtin>.memoryview

[function] [call site] 00047


                   <builtin>.len

[function] [call site] 00048


                   delta.append

[function] [call site] 00049


                   dulwich.pack.UnpackedObject.__init__

[function] [call site] 00050


                     <builtin>.map

[function] [call site] 00051


                     <builtin>.sum

[function] [call site] 00052


                   o.sha

[function] [call site] 00053


                   o.sha

[function] [call site] 00054


                   possible_bases.appendleft

[function] [call site] 00055


                   <builtin>.len

[function] [call site] 00056


                   possible_bases.pop

[function] [call site] 00057


                 dulwich.pack.deltify_pack_objects.objects_with_hints

[function] [call site] 00058


                   <builtin>.isinstance

[function] [call site] 00059


                 dulwich.pack.sort_objects_for_delta

[function] [call site] 00060


                   <builtin>.isinstance

[function] [call site] 00061


                   obj.raw_length

[function] [call site] 00062


                   magic.append

[function] [call site] 00063


                   magic.sort

[function] [call site] 00064


               <builtin>.iter

[function] [call site] 00065


               dulwich.pack.pack_objects_to_data.iter_without_path

[function] [call site] 00066


                 <builtin>.isinstance

[function] [call site] 00067


                 dulwich.pack.full_unpacked_object

[function] [call site] 00068


                   dulwich.pack.UnpackedObject.__init__

[function] [call site] 00069


                   o.as_raw_chunks

[function] [call site] 00070


                   o.sha

[function] [call site] 00071


                 dulwich.pack.full_unpacked_object

[function] [call site] 00072


             dulwich.pack.write_pack_data

[function] [call site] 00073


               dulwich.pack.PackChunkGenerator.__iter__

[function] [call site] 00074


               dulwich.pack.PackChunkGenerator.__init__

[function] [call site] 00075


                 hashlib.sha1

[function] [call site] 00076


                 dulwich.pack.PackChunkGenerator._pack_data_chunks

[function] [call site] 00077


                   <builtin>.len

[function] [call site] 00078


                   dulwich.pack.pack_header_chunks

[function] [call site] 00079


                     struct.pack

[function] [call site] 00080


                     struct.pack

[function] [call site] 00081


                   hashlib.sha1.update

[function] [call site] 00082


                   <builtin>.len

[function] [call site] 00083


                   <builtin>.enumerate

[function] [call site] 00084


                   <builtin>.isinstance

[function] [call site] 00085


                   dulwich.pack.pack_object_chunks

[function] [call site] 00086


                     <builtin>.isinstance

[function] [call site] 00087


                     <builtin>.map

[function] [call site] 00088


                     <builtin>.sum

[function] [call site] 00089


                     dulwich.pack.pack_object_header

[function] [call site] 00090


                       header.append

[function] [call site] 00091


                       header.append

[function] [call site] 00092


                       ret.insert

[function] [call site] 00093


                       header.extend

[function] [call site] 00094


                       <builtin>.len

[function] [call site] 00095


                       <builtin>.bytearray

[function] [call site] 00096


                     <builtin>.bytes

[function] [call site] 00097


                     zlib.compressobj

[function] [call site] 00098


                     compressor.compress

[function] [call site] 00099


                     compressor.flush

[function] [call site] 00100


                   binascii.crc32

[function] [call site] 00101


                   hashlib.sha1.update

[function] [call site] 00102


                   <builtin>.len

[function] [call site] 00103


                   unpacked.sha

[function] [call site] 00104


                   hashlib.sha1.digest

[function] [call site] 00105


               functools.partial

[function] [call site] 00106


               io.BytesIO.write

[function] [call site] 00107


               dulwich.pack.PackChunkGenerator.sha1digest

[function] [call site] 00108


                 hashlib.sha1.digest

[function] [call site] 00109


           io.BytesIO.seek

[function] [call site] 00110


           dulwich.pack.PackData.from_file

[function] [call site] 00111


             <builtin>.str

[function] [call site] 00112


             dulwich.pack.PackData.__init__

[function] [call site] 00113


               dulwich.file.GitFile

[function] [call site] 00114


                 dulwich.file._GitFile.__init__

[function] [call site] 00115


                   <builtin>.isinstance

[function] [call site] 00116


                   os.open

[function] [call site] 00117


                   <builtin>.getattr

[function] [call site] 00118


                   os.fdopen

[function] [call site] 00119


                   <builtin>.getattr

[function] [call site] 00120


                   <builtin>.setattr

[function] [call site] 00121


                 <builtin>.open

[function] [call site] 00122


               dulwich.pack.read_pack_header

[function] [call site] 00123


                 tempfile.SpooledTemporaryFile.read

[function] [call site] 00124


                 io.BytesIO.read

[function] [call site] 00125


                 dulwich.pack.PackStreamReader.read

[function] [call site] 00126


                   dulwich.pack.PackStreamReader._buf_len

[function] [call site] 00127


                     io.BytesIO.tell

[function] [call site] 00128


                     io.BytesIO.seek

[function] [call site] 00129


                     io.BytesIO.tell

[function] [call site] 00130


                     io.BytesIO.seek

[function] [call site] 00131


                   io.BytesIO.read

[function] [call site] 00132


                   io.BytesIO.read

[function] [call site] 00133


                   io.BytesIO

[function] [call site] 00134


                   dulwich.pack.PackStreamCopier._read

[function] [call site] 00135


                     <builtin>.super

[function] [call site] 00136


                 dulwich.contrib.swift.SwiftPackReader.read

[function] [call site] 00137


                   <builtin>.len

[function] [call site] 00138


                   dulwich.contrib.swift.SwiftPackReader._read

[function] [call site] 00139


                     <builtin>.min

[function] [call site] 00140


                   dulwich.contrib.swift.SwiftPackReader.read

[function] [call site] 00141


                 struct.unpack_from

[function] [call site] 00142


                 struct.unpack_from

[function] [call site] 00143


           <builtin>.repr

[function] [call site] 00144


           io.BytesIO

[function] [call site] 00145


           dulwich.bundle.write_bundle

[function] [call site] 00146


             io.BytesIO.write

[function] [call site] 00147


             io.BytesIO.write

[function] [call site] 00148


             bundle.capabilities.items

[function] [call site] 00149


             key.encode

[function] [call site] 00150


             io.BytesIO.write

[function] [call site] 00151


             value.encode

[function] [call site] 00152


             io.BytesIO.write

[function] [call site] 00153


             io.BytesIO.write

[function] [call site] 00154


             comment.encode

[function] [call site] 00155


             io.BytesIO.write

[function] [call site] 00156


             bundle.references.items

[function] [call site] 00157


             io.BytesIO.write

[function] [call site] 00158


             io.BytesIO.write

[function] [call site] 00159


             dulwich.pack.write_pack_data

[function] [call site] 00160


             <builtin>.len

[function] [call site] 00161


             bundle.pack_data.iter_unpacked

[function] [call site] 00162


           dulwich.bundle.read_bundle

[function] [call site] 00163


             io.BytesIO.readline

[function] [call site] 00164


             dulwich.bundle._read_bundle

[function] [call site] 00165


               io.BytesIO.readline

[function] [call site] 00166


               line.startswith

[function] [call site] 00167


               line.split

[function] [call site] 00168


               value.decode

[function] [call site] 00169


               key.decode

[function] [call site] 00170


               io.BytesIO.readline

[function] [call site] 00171


               line.startswith

[function] [call site] 00172


               comment.decode

[function] [call site] 00173


               prerequisites.append

[function] [call site] 00174


               io.BytesIO.readline

[function] [call site] 00175


               line.rstrip

[function] [call site] 00176


               io.BytesIO.readline

[function] [call site] 00177


               dulwich.pack.PackData.from_file

[function] [call site] 00178


             dulwich.bundle._read_bundle

[function] [call site] 00179


           test_utils.is_expected_exception

[function] [call site] 00180