Fuzz introspector: compress_hc_fuzzer
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
27 132 LZ4HC_reverseCountPattern call site: 00132 LZ4HC_countPattern
25 98 LZ4HC_compress_generic_internal call site: 00098 LZ4HC_countPattern
17 164 LZ4HC_compress_optimal call site: 00164 LZ4HC_countPattern
14 187 LZ4HC_compress_generic_internal call site: 00187 LZ4HC_compress_generic
8 207 LZ4_readLE16 call site: 00207 LZ4_copyMatchExact
5 126 LZ4HC_countPattern call site: 00126 LZ4HC_countPattern
4 56 LZ4MID_compress call site: 00056 LZ4_NbCommonBytes
2 49 LZ4MID_compress call site: 00049 LZ4_NbCommonBytes
2 53 LZ4_NbCommonBytes call site: 00053 LZ4_read32
2 216 LZ4_decompress_safe call site: 00216 __assert_fail
1 25 LZ4HC_init_internal call site: 00025 LZ4HC_clearTables
1 36 LZ4MID_compress call site: 00036 LZ4HC_getCLevelParams

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 FUZZ_dataProducer_create [function] [call site] 00001
2 fprintf [call site] 00002
2 abort [call site] 00003
1 FUZZ_dataProducer_retrieve32 [function] [call site] 00004
1 FUZZ_dataProducer_retrieve32 [function] [call site] 00005
1 FUZZ_dataProducer_remainingBytes [function] [call site] 00006
1 FUZZ_getRange_from_uint32 [function] [call site] 00007
1 FUZZ_getRange_from_uint32 [function] [call site] 00008
1 fprintf [call site] 00009
1 abort [call site] 00010
1 fprintf [call site] 00011
1 abort [call site] 00012
1 LZ4_compress_HC [function] [call site] 00013
2 LZ4_initStreamHC [function] [call site] 00014
3 LZ4_streamHC_t_alignment [function] [call site] 00015
3 LZ4_isAligned [function] [call site] 00016
3 LZ4_setCompressionLevel [function] [call site] 00017
2 LZ4_compress_HC_extStateHC_fastReset [function] [call site] 00018
3 LZ4_streamHC_t_alignment [function] [call site] 00019
3 LZ4_isAligned [function] [call site] 00020
3 LZ4_resetStreamHC_fast [function] [call site] 00021
4 __assert_fail [call site] 00022
4 LZ4_setCompressionLevel [function] [call site] 00023
3 LZ4HC_init_internal [function] [call site] 00024
4 __assert_fail [call site] 00025
4 LZ4HC_clearTables [function] [call site] 00026
3 LZ4_compressBound [function] [call site] 00027
3 LZ4HC_compress_generic [function] [call site] 00028
4 LZ4HC_compress_generic_noDictCtx [function] [call site] 00029
5 __assert_fail [call site] 00030
5 LZ4HC_compress_generic_internal [function] [call site] 00031
6 __assert_fail [call site] 00032
6 __assert_fail [call site] 00033
6 LZ4HC_getCLevelParams [function] [call site] 00034
6 LZ4MID_compress [function] [call site] 00035
7 select_searchDict_function [function] [call site] 00036
8 LZ4HC_getCLevelParams [function] [call site] 00037
7 __assert_fail [call site] 00038
7 __assert_fail [call site] 00039
7 __assert_fail [call site] 00040
7 __assert_fail [call site] 00041
7 __assert_fail [call site] 00042
7 LZ4MID_hash8Ptr [function] [call site] 00043
8 LZ4_readLE64 [function] [call site] 00044
9 LZ4_isLittleEndian [function] [call site] 00045
9 LZ4_read64 [function] [call site] 00046
8 LZ4MID_hash7 [function] [call site] 00047
7 __assert_fail [call site] 00048
7 __assert_fail [call site] 00049
7 LZ4_read_ARCH [function] [call site] 00050
7 LZ4_NbCommonBytes [function] [call site] 00051
8 __assert_fail [call site] 00052
8 LZ4_isLittleEndian [function] [call site] 00053
7 LZ4_read32 [function] [call site] 00054
7 LZ4_read16 [function] [call site] 00055
7 __assert_fail [call site] 00056
7 LZ4_read_ARCH [function] [call site] 00057
7 LZ4_NbCommonBytes [function] [call site] 00058
7 LZ4_read32 [function] [call site] 00059
7 LZ4_read16 [function] [call site] 00060
7 LZ4MID_hash4Ptr [function] [call site] 00061
8 LZ4_read32 [function] [call site] 00062
8 LZ4MID_hash4 [function] [call site] 00063
7 __assert_fail [call site] 00064
7 __assert_fail [call site] 00065
7 __assert_fail [call site] 00066
7 LZ4MID_hash8Ptr [function] [call site] 00067
7 __assert_fail [call site] 00068
7 __assert_fail [call site] 00069
7 LZ4MID_hash8Ptr [function] [call site] 00070
7 LZ4MID_hash8Ptr [function] [call site] 00071
7 LZ4MID_hash4Ptr [function] [call site] 00072
7 __assert_fail [call site] 00073
7 LZ4_writeLE16 [function] [call site] 00074
8 LZ4_isLittleEndian [function] [call site] 00075
8 LZ4_write16 [function] [call site] 00076
7 LZ4HC_encodeLastSequence_fillOutput [function] [call site] 00077
8 __assert_fail [call site] 00078
8 __assert_fail [call site] 00079
8 LZ4_writeLE16 [function] [call site] 00080
7 LZ4MID_hash8Ptr [function] [call site] 00081
7 LZ4MID_hash8Ptr [function] [call site] 00082
7 LZ4MID_hash8Ptr [function] [call site] 00083
7 LZ4MID_hash4Ptr [function] [call site] 00084
7 LZ4MID_hash4Ptr [function] [call site] 00085
7 LZ4HC_encodeLastLiterals [function] [call site] 00086
8 __assert_fail [call site] 00087
7 LZ4HC_dropPositions [function] [call site] 00088
8 LZ4MID_hash4Ptr [function] [call site] 00089
8 LZ4MID_hash8Ptr [function] [call site] 00090
8 LZ4HC_hashPtr [function] [call site] 00091
9 LZ4_read32 [function] [call site] 00092
7 __assert_fail [call site] 00093
7 __assert_fail [call site] 00094
7 __assert_fail [call site] 00095
7 __assert_fail [call site] 00096
7 __assert_fail [call site] 00097
6 __assert_fail [call site] 00098
6 LZ4_read32 [function] [call site] 00099
6 __assert_fail [call site] 00100
6 LZ4HC_hashPtr [function] [call site] 00101
6 LZ4HC_hashPtr [function] [call site] 00102
6 __assert_fail [call site] 00103
6 LZ4_read16 [function] [call site] 00104
6 __assert_fail [call site] 00105
6 LZ4_read32 [function] [call site] 00106
6 LZ4_isLittleEndian [function] [call site] 00107
6 __assert_fail [call site] 00108
6 LZ4_read_ARCH [function] [call site] 00109
6 LZ4_NbCommonBytes [function] [call site] 00110
6 LZ4_read32 [function] [call site] 00111
6 LZ4_read16 [function] [call site] 00112
6 LZ4_read_ARCH [function] [call site] 00113
6 LZ4_NbCommonBytes [function] [call site] 00114
6 LZ4_read32 [function] [call site] 00115
6 LZ4_read16 [function] [call site] 00116
6 LZ4_read_ARCH [function] [call site] 00117
6 LZ4_NbCommonBytes [function] [call site] 00118
6 LZ4_read32 [function] [call site] 00119
6 LZ4_read16 [function] [call site] 00120
6 __assert_fail [call site] 00121
6 LZ4_read32 [function] [call site] 00122
6 LZ4HC_countPattern [function] [call site] 00123
7 LZ4_read_ARCH [function] [call site] 00124
7 LZ4_NbCommonBytes [function] [call site] 00125
7 LZ4_isLittleEndian [function] [call site] 00126
6 LZ4HC_protectDictEnd [function] [call site] 00127
6 LZ4_read32 [function] [call site] 00128
6 LZ4HC_countPattern [function] [call site] 00129
6 LZ4HC_rotatePattern [function] [call site] 00130
6 LZ4HC_reverseCountPattern [function] [call site] 00131
7 LZ4_read32 [function] [call site] 00132
6 __assert_fail [call site] 00133
6 LZ4_read_ARCH [function] [call site] 00134
6 LZ4_NbCommonBytes [function] [call site] 00135
6 LZ4_read32 [function] [call site] 00136
6 LZ4_read16 [function] [call site] 00137
6 __assert_fail [call site] 00138
6 LZ4_read32 [function] [call site] 00139
6 LZ4_read32 [function] [call site] 00140
6 LZ4HC_hashPtr [function] [call site] 00141
6 __assert_fail [call site] 00142
6 LZ4_read16 [function] [call site] 00143
6 LZ4HC_countPattern [function] [call site] 00144
6 LZ4HC_protectDictEnd [function] [call site] 00145
6 __assert_fail [call site] 00146
6 LZ4_writeLE16 [function] [call site] 00147
6 LZ4_read32 [function] [call site] 00148
6 LZ4HC_hashPtr [function] [call site] 00149
6 __assert_fail [call site] 00150
6 LZ4_read16 [function] [call site] 00151
6 LZ4HC_countPattern [function] [call site] 00152
6 LZ4HC_protectDictEnd [function] [call site] 00153
6 __assert_fail [call site] 00154
6 LZ4_writeLE16 [function] [call site] 00155
6 __assert_fail [call site] 00156
6 LZ4_writeLE16 [function] [call site] 00157
6 __assert_fail [call site] 00158
6 LZ4_writeLE16 [function] [call site] 00159
6 LZ4HC_encodeLastLiterals [function] [call site] 00160
6 LZ4HC_encodeLastSequence_fillOutput [function] [call site] 00161
6 __assert_fail [call site] 00162
6 LZ4HC_compress_optimal [function] [call site] 00163
7 __assert_fail [call site] 00164
7 __assert_fail [call site] 00165
7 LZ4_read32 [function] [call site] 00166
7 LZ4HC_hashPtr [function] [call site] 00167
7 __assert_fail [call site] 00168
7 LZ4_read16 [function] [call site] 00169
7 LZ4HC_countPattern [function] [call site] 00170
7 LZ4HC_protectDictEnd [function] [call site] 00171
7 __assert_fail [call site] 00172
7 __assert_fail [call site] 00173
7 __assert_fail [call site] 00174
7 __assert_fail [call site] 00175
7 __assert_fail [call site] 00176
7 __assert_fail [call site] 00177
7 __assert_fail [call site] 00178
7 __assert_fail [call site] 00179
7 __assert_fail [call site] 00180
7 LZ4_writeLE16 [function] [call site] 00181
7 LZ4HC_encodeLastSequence_fillOutput [function] [call site] 00182
7 LZ4HC_encodeLastLiterals [function] [call site] 00183
7 __assert_fail [call site] 00184
7 LZ4HC_encodeLastSequence_fillOutput [function] [call site] 00185
7 LZ4HC_encodeLastLiterals [function] [call site] 00186
6 LZ4HC_dropPositions [function] [call site] 00187
4 LZ4HC_compress_generic_dictCtx [function] [call site] 00188
5 __assert_fail [call site] 00189
5 LZ4HC_compress_generic_noDictCtx [function] [call site] 00190
5 LZ4HC_getCLevelParams [function] [call site] 00191
5 isStateCompatible [function] [call site] 00192
6 LZ4HC_getCLevelParams [function] [call site] 00193
6 LZ4HC_getCLevelParams [function] [call site] 00194
5 LZ4HC_setExternalDict [function] [call site] 00195
6 LZ4HC_getCLevelParams [function] [call site] 00196
6 __assert_fail [call site] 00197
6 LZ4HC_hashPtr [function] [call site] 00198
5 LZ4HC_compress_generic_noDictCtx [function] [call site] 00199
5 LZ4HC_compress_generic_internal [function] [call site] 00200
3 LZ4HC_compress_generic [function] [call site] 00201
1 LZ4_decompress_safe [function] [call site] 00202
2 __assert_fail [call site] 00203
2 __assert_fail [call site] 00204
2 LZ4_readLE16 [function] [call site] 00205
3 LZ4_isLittleEndian [function] [call site] 00206
3 LZ4_read16 [function] [call site] 00207
2 __assert_fail [call site] 00208
2 LZ4_copyMatchExact [function] [call site] 00209
2 __assert_fail [call site] 00210
2 __assert_fail [call site] 00211
2 LZ4_write32 [function] [call site] 00212
2 __assert_fail [call site] 00213
2 __assert_fail [call site] 00214
2 LZ4_copyMatchExact [function] [call site] 00215
2 LZ4_copyMatchExact [function] [call site] 00216
2 __assert_fail [call site] 00217
2 LZ4_write32 [function] [call site] 00218
1 fprintf [call site] 00219
1 abort [call site] 00220
1 memcmp [call site] 00221
1 fprintf [call site] 00222
1 abort [call site] 00223
1 LZ4_sizeofStateHC [function] [call site] 00224
1 fprintf [call site] 00225
1 abort [call site] 00226
1 LZ4_compress_HC_destSize [function] [call site] 00227
2 LZ4_initStreamHC [function] [call site] 00228
2 LZ4HC_init_internal [function] [call site] 00229
2 LZ4_setCompressionLevel [function] [call site] 00230
2 LZ4HC_compress_generic [function] [call site] 00231
1 fprintf [call site] 00232
1 abort [call site] 00233
1 LZ4_decompress_safe [function] [call site] 00234
1 fprintf [call site] 00235
1 abort [call site] 00236
1 memcmp [call site] 00237
1 fprintf [call site] 00238
1 abort [call site] 00239
1 FUZZ_dataProducer_free [function] [call site] 00240