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

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity Unique Reachable Complexities Unique Reachable Functions All non-covered Complexity All Reachable Complexity Function Name Function Callsite Blocked Branch
38 38 1 :

['inflateInit_']

370 945 Pl_Flate::handleData(unsignedcharconst*,unsignedlong,int) call site: 00000 /src/qpdf/libqpdf/Pl_Flate.cc:131
21 21 1 :

['crc32']

579 630 deflate call site: 00083 /src/zlib/deflate.c:1160
21 21 1 :

['crc32']

21 21 read_buf call site: 00091 /src/zlib/deflate.c:227
16 37 3 :

['deflateEnd', '__clang_call_terminate', 'inflateEnd']

16 37 Pl_Flate::Members::~Members() call site: 00000 /src/qpdf/libqpdf/Pl_Flate.cc:46
12 12 1 :

['inflateEnd']

32 125 Pl_Flate::finish() call site: 00000 /src/qpdf/libqpdf/Pl_Flate.cc:218
8 8 4 :

['__cxa_allocate_exception', 'std::runtime_error::runtime_error(char const*)', '__cxa_free_exception', '__cxa_throw']

8 8 Pl_Flate::Members::Members(unsignedlong,Pl_Flate::action_e) call site: 00000 /src/qpdf/libqpdf/Pl_Flate.cc:29
8 8 13 :

['__cxa_allocate_exception', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+[abi:v180000] , std::__1::allocator >(std::__1::basic_string , std::__1::allocator >&&, char const*)', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+[abi:v180000] , std::__1::allocator >(std::__1::basic_string , std::__1::allocator >&&, std::__1::basic_string , std::__1::allocator >&&)', 'std::__1::basic_string , std::__1::allocator >::~basic_string()', 'std::__1::shared_ptr ::operator->[abi:v180000]() const', 'std::__1::basic_string , std::__1::allocator >::operator+=[abi:v180000](char const*)', 'std::runtime_error::runtime_error(std::__1::basic_string , std::__1::allocator > const&)', '__cxa_free_exception', '__cxa_throw', '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC2B7v180000ILi0EEEPKc', 'std::__1::to_string(int)', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+[abi:v180000] , std::__1::allocator >(std::__1::basic_string , std::__1::allocator > const&, char const*)', 'std::__1::basic_string , std::__1::allocator >::operator+=[abi:v180000](std::__1::basic_string , std::__1::allocator > const&)']

8 8 Pl_Flate::checkError(charconst*,int) call site: 00000 /src/qpdf/libqpdf/Pl_Flate.cc:250
7 14 2 :

['_tr_stored_block', '_tr_align']

7 38 deflate call site: 00128 /src/zlib/deflate.c:1211
0 21 1 :

['deflateEnd']

0 21 deflateInit2_ call site: 00026 /src/zlib/deflate.c:499
0 0 None 747 869 deflate call site: 00064 /src/zlib/deflate.c:1009
0 0 None 747 869 deflate call site: 00064 /src/zlib/deflate.c:1011
0 0 None 747 869 deflate call site: 00064 /src/zlib/deflate.c:1013

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 FuzzHelper::FuzzHelper(unsigned char const*, unsigned long) [function] [call site] 00001
1 FuzzHelper::run() [function] [call site] 00002
2 FuzzHelper::doChecks() [function] [call site] 00003
3 Pl_Discard::Pl_Discard() [function] [call site] 00004
4 Pipeline::Pipeline(char const*, Pipeline*) [function] [call site] 00005
3 Pl_Flate::Pl_Flate(char const*, Pipeline*, Pl_Flate::action_e, unsigned int) [function] [call site] 00006
4 Pipeline::Pipeline(char const*, Pipeline*) [function] [call site] 00007
4 unsigned long QIntC::to_size<unsigned int>(unsigned int const&) [function] [call site] 00008
5 QIntC::IntConverter<unsigned int, unsigned long, false, false>::convert(unsigned int const&) [function] [call site] 00009
6 QIntC::IntConverter<unsigned int, unsigned long, false, false>::error(unsigned int) [function] [call site] 00010
7 __cxa_allocate_exception [call site] 00011
7 std::range_error::range_error[abi:v180000](std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) [function] [call site] 00012
8 std::runtime_error::runtime_error(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) [call site] 00013
4 Pl_Flate::Members::Members(unsigned long, Pl_Flate::action_e) [function] [call site] 00014
5 std::__1::shared_ptr<unsigned char> QUtil::make_shared_array<unsigned char>(unsigned long) [function] [call site] 00015
5 __cxa_allocate_exception [call site] 00016
5 unsigned int QIntC::to_uint<unsigned long>(unsigned long const&) [function] [call site] 00017
6 QIntC::IntConverter<unsigned long, unsigned int, false, false>::convert(unsigned long const&) [function] [call site] 00018
4 Pipeline::~Pipeline() [function] [call site] 00019
3 Pl_Flate::write(unsigned char const*, unsigned long) [function] [call site] 00020
4 __cxa_allocate_exception [call site] 00021
4 Pl_Flate::handleData(unsigned char const*, unsigned long, int) [function] [call site] 00022
5 __cxa_allocate_exception [call site] 00023
5 unsigned int QIntC::to_uint<unsigned long>(unsigned long const&) [function] [call site] 00024
5 deflateInit_ [function] [call site] 00025
6 deflateInit2_ [function] [call site] 00026
7 deflateEnd [function] [call site] 00027
8 deflateStateCheck [function] [call site] 00028
7 deflateReset [function] [call site] 00029
8 deflateResetKeep [function] [call site] 00030
9 deflateStateCheck [function] [call site] 00031
9 crc32 [function] [call site] 00032
10 crc32_z [function] [call site] 00033
11 crc_word [function] [call site] 00034
11 crc_word [function] [call site] 00035
11 crc_word [function] [call site] 00036
11 crc_word [function] [call site] 00037
11 crc_word [function] [call site] 00038
11 byte_swap [function] [call site] 00039
11 crc_word_big [function] [call site] 00040
11 crc_word_big [function] [call site] 00041
11 crc_word_big [function] [call site] 00042
11 crc_word_big [function] [call site] 00043
11 crc_word_big [function] [call site] 00044
11 byte_swap [function] [call site] 00045
9 adler32 [function] [call site] 00046
10 adler32_z [function] [call site] 00047
9 _tr_init [function] [call site] 00048
10 tr_static_init [function] [call site] 00049
10 init_block [function] [call site] 00050
8 lm_init [function] [call site] 00051
5 inflateInit_ [function] [call site] 00052
6 inflateInit2_ [function] [call site] 00053
7 inflateReset2 [function] [call site] 00054
8 inflateStateCheck [function] [call site] 00055
8 inflateReset [function] [call site] 00056
9 inflateStateCheck [function] [call site] 00057
9 inflateResetKeep [function] [call site] 00058
10 inflateStateCheck [function] [call site] 00059
5 Pl_Flate::checkError(char const*, int) [function] [call site] 00060
6 __cxa_allocate_exception [call site] 00061
5 deflate [function] [call site] 00062
6 deflateStateCheck [function] [call site] 00063
6 flush_pending [function] [call site] 00064
7 _tr_flush_bits [function] [call site] 00065
8 bi_flush [function] [call site] 00066
6 putShortMSB [function] [call site] 00067
6 putShortMSB [function] [call site] 00068
6 putShortMSB [function] [call site] 00069
6 adler32 [function] [call site] 00070
6 flush_pending [function] [call site] 00071
6 crc32 [function] [call site] 00072
6 flush_pending [function] [call site] 00073
6 crc32 [function] [call site] 00074
6 crc32 [function] [call site] 00075
6 flush_pending [function] [call site] 00076
6 crc32 [function] [call site] 00077
6 crc32 [function] [call site] 00078
6 flush_pending [function] [call site] 00079
6 crc32 [function] [call site] 00080
6 crc32 [function] [call site] 00081
6 flush_pending [function] [call site] 00082
6 crc32 [function] [call site] 00083
6 flush_pending [function] [call site] 00084
6 crc32 [function] [call site] 00085
6 flush_pending [function] [call site] 00086
6 deflate_stored [function] [call site] 00087
7 _tr_stored_block [function] [call site] 00088
8 bi_windup [function] [call site] 00089
7 flush_pending [function] [call site] 00090
7 read_buf [function] [call site] 00091
8 adler32 [function] [call site] 00092
8 crc32 [function] [call site] 00093
7 read_buf [function] [call site] 00094
7 _tr_stored_block [function] [call site] 00095
7 flush_pending [function] [call site] 00096
6 deflate_huff [function] [call site] 00097
7 fill_window [function] [call site] 00098
8 slide_hash [function] [call site] 00099
8 read_buf [function] [call site] 00100
7 _tr_flush_block [function] [call site] 00101
8 detect_data_type [function] [call site] 00102
8 build_tree [function] [call site] 00103
9 pqdownheap [function] [call site] 00104
9 pqdownheap [function] [call site] 00105
9 pqdownheap [function] [call site] 00106
9 gen_bitlen [function] [call site] 00107
9 gen_codes [function] [call site] 00108
10 bi_reverse [function] [call site] 00109
8 build_tree [function] [call site] 00110
8 build_bl_tree [function] [call site] 00111
9 scan_tree [function] [call site] 00112
9 scan_tree [function] [call site] 00113
9 build_tree [function] [call site] 00114
8 _tr_stored_block [function] [call site] 00115
8 compress_block [function] [call site] 00116
8 send_all_trees [function] [call site] 00117
9 send_tree [function] [call site] 00118
9 send_tree [function] [call site] 00119
8 compress_block [function] [call site] 00120
8 init_block [function] [call site] 00121
8 bi_windup [function] [call site] 00122
7 flush_pending [function] [call site] 00123
7 _tr_flush_block [function] [call site] 00124
7 flush_pending [function] [call site] 00125
7 _tr_flush_block [function] [call site] 00126
7 flush_pending [function] [call site] 00127
6 deflate_rle [function] [call site] 00128
7 fill_window [function] [call site] 00129
7 _tr_flush_block [function] [call site] 00130
7 flush_pending [function] [call site] 00131
7 _tr_flush_block [function] [call site] 00132
7 flush_pending [function] [call site] 00133
7 _tr_flush_block [function] [call site] 00134
7 flush_pending [function] [call site] 00135
6 _tr_align [function] [call site] 00136
7 bi_flush [function] [call site] 00137
6 _tr_stored_block [function] [call site] 00138
6 flush_pending [function] [call site] 00139
6 putShortMSB [function] [call site] 00140
6 putShortMSB [function] [call site] 00141
6 flush_pending [function] [call site] 00142
5 inflate [function] [call site] 00143
6 inflateStateCheck [function] [call site] 00144
6 crc32 [function] [call site] 00145
6 crc32 [function] [call site] 00146
6 adler32 [function] [call site] 00147
6 crc32 [function] [call site] 00148
6 crc32 [function] [call site] 00149
6 crc32 [function] [call site] 00150
6 crc32 [function] [call site] 00151
6 crc32 [function] [call site] 00152
6 crc32 [function] [call site] 00153
6 crc32 [function] [call site] 00154
6 crc32 [function] [call site] 00155
6 adler32 [function] [call site] 00156
6 fixedtables [function] [call site] 00157
6 inflate_table [function] [call site] 00158
6 inflate_table [function] [call site] 00159
6 inflate_table [function] [call site] 00160
6 inflate_fast [function] [call site] 00161
6 crc32 [function] [call site] 00162
6 adler32 [function] [call site] 00163
6 updatewindow [function] [call site] 00164
6 crc32 [function] [call site] 00165
6 adler32 [function] [call site] 00166
5 strcmp [call site] 00167
5 Pl_Flate::warn(char const*, int) [function] [call site] 00168
5 unsigned long QIntC::to_ulong<unsigned long>(unsigned long const&) [function] [call site] 00169
6 QIntC::IntConverter<unsigned long, unsigned long, false, false>::convert(unsigned long const&) [function] [call site] 00170
5 __cxa_allocate_exception [call site] 00171
5 Pipeline::getNext(bool) [function] [call site] 00172
6 __cxa_allocate_exception [call site] 00173
5 unsigned int QIntC::to_uint<unsigned long>(unsigned long const&) [function] [call site] 00174
5 Pl_Flate::checkError(char const*, int) [function] [call site] 00175
3 Pl_Flate::finish() [function] [call site] 00176
4 Pl_Flate::handleData(unsigned char const*, unsigned long, int) [function] [call site] 00177
4 deflateEnd [function] [call site] 00178
4 __cxa_begin_catch [call site] 00179
4 Pipeline::getNext(bool) [function] [call site] 00180
4 inflateEnd [function] [call site] 00181
5 inflateStateCheck [function] [call site] 00182
4 Pl_Flate::checkError(char const*, int) [function] [call site] 00183
4 __cxa_begin_catch [call site] 00184
4 __cxa_end_catch [call site] 00185
4 __cxa_allocate_exception [call site] 00186
4 __cxa_end_catch [call site] 00187
4 Pipeline::getNext(bool) [function] [call site] 00188
3 Pl_Flate::~Pl_Flate() [function] [call site] 00189
4 Pipeline::~Pipeline() [function] [call site] 00190
3 Pl_Discard::~Pl_Discard() [function] [call site] 00191
4 Pipeline::~Pipeline() [function] [call site] 00192
2 __cxa_begin_catch [call site] 00193
2 __cxa_end_catch [call site] 00194