Fuzz introspector: zstd_frame_info
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
4 3 ZSTD_isLegacy call site: 00003 MEM_isLittleEndian
4 11 ZSTDv05_getFrameParams call site: 00011 MEM_isLittleEndian
4 17 ZSTDv06_getFrameParams call site: 00017 MEM_isLittleEndian
4 26 ZSTDv06_getFrameParams call site: 00026 MEM_isLittleEndian
4 34 MEM_readLE32 call site: 00034 MEM_readLE32
4 80 ZSTD_getFrameHeader_advanced call site: 00080 MEM_isLittleEndian
3 104 ZSTDv02_findFrameSizeInfoLegacy call site: 00104 MEM_isLittleEndian
3 115 ZSTDv03_findFrameSizeInfoLegacy call site: 00115 MEM_isLittleEndian
3 126 ZSTDv04_findFrameSizeInfoLegacy call site: 00126 MEM_isLittleEndian
2 23 ZSTDv06_getFrameParams call site: 00023 MEM_isLittleEndian
2 50 MEM_readLE64 call site: 00050 MEM_read64
2 59 MEM_writeLE32 call site: 00059 MEM_swap32

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 ZSTD_getFrameContentSize [function] [call site] 00001
2 ZSTD_isLegacy [function] [call site] 00002
3 MEM_readLE32 [function] [call site] 00003
4 MEM_isLittleEndian [function] [call site] 00004
4 MEM_read32 [function] [call site] 00005
4 MEM_read32 [function] [call site] 00006
4 MEM_swap32 [function] [call site] 00007
2 ZSTD_getDecompressedSize_legacy [function] [call site] 00008
3 ZSTD_isLegacy [function] [call site] 00009
3 ZSTDv05_getFrameParams [function] [call site] 00010
4 MEM_readLE32 [function] [call site] 00011
5 MEM_isLittleEndian [function] [call site] 00012
5 MEM_read32 [function] [call site] 00013
5 MEM_read32 [function] [call site] 00014
5 MEM_swap32 [function] [call site] 00015
3 ZSTDv06_getFrameParams [function] [call site] 00016
4 MEM_readLE32 [function] [call site] 00017
5 MEM_isLittleEndian [function] [call site] 00018
5 MEM_read32 [function] [call site] 00019
5 MEM_read32 [function] [call site] 00020
5 MEM_swap32 [function] [call site] 00021
4 ZSTDv06_frameHeaderSize [function] [call site] 00022
4 MEM_readLE16 [function] [call site] 00023
5 MEM_isLittleEndian [function] [call site] 00024
5 MEM_read16 [function] [call site] 00025
4 MEM_readLE64 [function] [call site] 00026
5 MEM_isLittleEndian [function] [call site] 00027
5 MEM_read64 [function] [call site] 00028
5 MEM_read64 [function] [call site] 00029
5 MEM_swap64 [function] [call site] 00030
3 ZSTDv07_getFrameParams [function] [call site] 00031
4 MEM_readLE32 [function] [call site] 00032
5 MEM_isLittleEndian [function] [call site] 00033
5 MEM_read32 [function] [call site] 00034
5 MEM_read32 [function] [call site] 00035
5 MEM_swap32 [function] [call site] 00036
4 MEM_readLE32 [function] [call site] 00037
4 MEM_readLE32 [function] [call site] 00038
4 ZSTDv07_frameHeaderSize [function] [call site] 00039
4 MEM_32bits [function] [call site] 00040
4 MEM_32bits [function] [call site] 00041
4 MEM_readLE16 [function] [call site] 00042
5 MEM_isLittleEndian [function] [call site] 00043
5 MEM_read16 [function] [call site] 00044
4 MEM_readLE32 [function] [call site] 00045
4 MEM_readLE16 [function] [call site] 00046
4 MEM_readLE32 [function] [call site] 00047
4 MEM_readLE64 [function] [call site] 00048
5 MEM_isLittleEndian [function] [call site] 00049
5 MEM_read64 [function] [call site] 00050
5 MEM_read64 [function] [call site] 00051
5 MEM_swap64 [function] [call site] 00052
2 ZSTD_getFrameHeader [function] [call site] 00053
3 ZSTD_getFrameHeader_advanced [function] [call site] 00054
4 ZSTD_startingInputLength [function] [call site] 00055
5 __assert_fail [call site] 00056
4 MEM_writeLE32 [function] [call site] 00057
5 MEM_isLittleEndian [function] [call site] 00058
5 MEM_write32 [function] [call site] 00059
5 MEM_swap32 [function] [call site] 00060
5 MEM_write32 [function] [call site] 00061
4 __assert_fail [call site] 00062
4 MEM_readLE32 [function] [call site] 00063
4 MEM_writeLE32 [function] [call site] 00064
4 MEM_readLE32 [function] [call site] 00065
4 MEM_readLE32 [function] [call site] 00066
4 MEM_readLE32 [function] [call site] 00067
4 MEM_readLE32 [function] [call site] 00068
4 MEM_readLE32 [function] [call site] 00069
4 ZSTD_frameHeaderSize_internal [function] [call site] 00070
5 ZSTD_startingInputLength [function] [call site] 00071
4 __assert_fail [call site] 00072
4 MEM_readLE16 [function] [call site] 00073
5 MEM_isLittleEndian [function] [call site] 00074
5 MEM_read16 [function] [call site] 00075
4 MEM_readLE32 [function] [call site] 00076
4 __assert_fail [call site] 00077
4 MEM_readLE16 [function] [call site] 00078
4 MEM_readLE32 [function] [call site] 00079
4 MEM_readLE64 [function] [call site] 00080
5 MEM_isLittleEndian [function] [call site] 00081
5 MEM_read64 [function] [call site] 00082
5 MEM_read64 [function] [call site] 00083
5 MEM_swap64 [function] [call site] 00084
1 ZSTD_getDecompressedSize [function] [call site] 00085
2 ZSTD_getFrameContentSize [function] [call site] 00086
1 ZSTD_findFrameCompressedSize [function] [call site] 00087
2 ZSTD_findFrameCompressedSize_advanced [function] [call site] 00088
3 ZSTD_findFrameSizeInfo [function] [call site] 00089
4 ZSTD_isLegacy [function] [call site] 00090
4 ZSTD_findFrameSizeInfoLegacy [function] [call site] 00091
5 ZSTD_isLegacy [function] [call site] 00092
5 ZSTDv01_findFrameSizeInfoLegacy [function] [call site] 00093
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00094
6 ZSTD_readBE32 [function] [call site] 00095
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00096
6 ZSTDv01_getcBlockSize [function] [call site] 00097
6 ZSTDv01_isError [function] [call site] 00098
7 ERR_isError [function] [call site] 00099
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00100
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00101
5 ZSTDv02_findFrameSizeInfoLegacy [function] [call site] 00102
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00103
6 MEM_readLE32 [function] [call site] 00104
7 MEM_isLittleEndian [function] [call site] 00105
7 MEM_read32 [function] [call site] 00106
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00107
6 ZSTD_getcBlockSize [function] [call site] 00108
6 ZSTD_isError [function] [call site] 00109
7 ERR_isError [function] [call site] 00110
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00111
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00112
5 ZSTDv03_findFrameSizeInfoLegacy [function] [call site] 00113
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00114
6 MEM_readLE32 [function] [call site] 00115
7 MEM_isLittleEndian [function] [call site] 00116
7 MEM_read32 [function] [call site] 00117
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00118
6 ZSTD_getcBlockSize [function] [call site] 00119
6 ZSTD_isError [function] [call site] 00120
7 ERR_isError [function] [call site] 00121
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00122
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00123
5 ZSTDv04_findFrameSizeInfoLegacy [function] [call site] 00124
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00125
6 MEM_readLE32 [function] [call site] 00126
7 MEM_isLittleEndian [function] [call site] 00127
7 MEM_read32 [function] [call site] 00128
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00129
6 ZSTD_getcBlockSize [function] [call site] 00130
6 ZSTD_isError [function] [call site] 00131
7 ERR_isError [function] [call site] 00132
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00133
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00134
5 ZSTDv05_findFrameSizeInfoLegacy [function] [call site] 00135
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00136
6 MEM_readLE32 [function] [call site] 00137
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00138
6 ZSTDv05_getcBlockSize [function] [call site] 00139
6 ZSTDv05_isError [function] [call site] 00140
7 ERR_isError [function] [call site] 00141
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00142
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00143
5 ZSTDv06_findFrameSizeInfoLegacy [function] [call site] 00144
6 ZSTDv06_frameHeaderSize [function] [call site] 00145
6 ERR_isError [function] [call site] 00146
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00147
6 MEM_readLE32 [function] [call site] 00148
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00149
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00150
6 ZSTDv06_getcBlockSize [function] [call site] 00151
6 ERR_isError [function] [call site] 00152
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00153
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00154
5 ZSTDv07_findFrameSizeInfoLegacy [function] [call site] 00155
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00156
6 ZSTDv07_frameHeaderSize [function] [call site] 00157
6 ERR_isError [function] [call site] 00158
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00159
6 MEM_readLE32 [function] [call site] 00160
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00161
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00162
6 ZSTDv07_getcBlockSize [function] [call site] 00163
6 ERR_isError [function] [call site] 00164
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00165
6 ZSTD_errorFrameSizeInfoLegacy [function] [call site] 00166
5 ERR_isError [function] [call site] 00167
5 __assert_fail [call site] 00168
4 MEM_readLE32 [function] [call site] 00169
4 readSkippableFrameSize [function] [call site] 00170
5 MEM_readLE32 [function] [call site] 00171
4 ERR_isError [function] [call site] 00172
4 __assert_fail [call site] 00173
4 ZSTD_getFrameHeader_advanced [function] [call site] 00174
4 ERR_isError [function] [call site] 00175
4 ZSTD_errorFrameSizeInfo [function] [call site] 00176
4 ZSTD_errorFrameSizeInfo [function] [call site] 00177
4 ZSTD_getcBlockSize [function] [call site] 00178
5 MEM_readLE24 [function] [call site] 00179
6 MEM_readLE16 [function] [call site] 00180
4 ERR_isError [function] [call site] 00181
4 ZSTD_errorFrameSizeInfo [function] [call site] 00182
4 ZSTD_errorFrameSizeInfo [function] [call site] 00183
4 ZSTD_errorFrameSizeInfo [function] [call site] 00184
1 ZSTD_getDictID_fromFrame [function] [call site] 00185
2 ZSTD_getFrameHeader [function] [call site] 00186
2 ERR_isError [function] [call site] 00187
1 ZSTD_findDecompressedSize [function] [call site] 00188
2 ZSTD_startingInputLength [function] [call site] 00189
2 MEM_readLE32 [function] [call site] 00190
2 readSkippableFrameSize [function] [call site] 00191
2 ERR_isError [function] [call site] 00192
2 __assert_fail [call site] 00193
2 ZSTD_getFrameContentSize [function] [call site] 00194
2 ZSTD_findFrameCompressedSize [function] [call site] 00195
2 ERR_isError [function] [call site] 00196
2 __assert_fail [call site] 00197
1 ZSTD_decompressBound [function] [call site] 00198
2 ZSTD_findFrameSizeInfo [function] [call site] 00199
2 ERR_isError [function] [call site] 00200
2 __assert_fail [call site] 00201
1 ZSTD_frameHeaderSize [function] [call site] 00202
2 ZSTD_frameHeaderSize_internal [function] [call site] 00203
1 ZSTD_isFrame [function] [call site] 00204
2 MEM_readLE32 [function] [call site] 00205
2 ZSTD_isLegacy [function] [call site] 00206
1 ZSTD_getFrameHeader [function] [call site] 00207
1 ZSTD_getFrameHeader_advanced [function] [call site] 00208