Fuzz introspector: mux_demux_api_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
2 2 1 :

['VP8LSetEndOfStream']

2 2 VP8LReadBits call site /src/libwebp/src/utils/bit_reader_utils.c:211
0 21 1 :

['MuxImageCount']

0 21 SearchImageToGetOrDelete call site /src/libwebp/src/mux/muxinternal.c:284
0 0 None 0 16 MuxImageParse call site /src/libwebp/src/mux/muxread.c:152
0 0 None 0 15 MuxImageCount call site /src/libwebp/src/mux/muxinternal.c:262
0 0 None 0 3 ParseSingleImage call site /src/libwebp/src/demux/demux.c:435
0 0 None 0 3 ParseAnimationFrame call site /src/libwebp/src/demux/demux.c:347
0 0 None 0 0 VP8LGetInfo call site /src/libwebp/src/dec/vp8l_dec.c:138
0 0 None 0 0 WebPGetFeaturesInternal call site /src/libwebp/src/dec/webp_dec.c:739
0 0 None 0 0 ParseHeadersInternal call site /src/libwebp/src/dec/webp_dec.c:331
0 0 None 0 0 ParseHeadersInternal call site /src/libwebp/src/dec/webp_dec.c:337
0 0 None 0 0 ParseHeadersInternal call site /src/libwebp/src/dec/webp_dec.c:355
0 0 None 0 0 ParseHeadersInternal call site /src/libwebp/src/dec/webp_dec.c:387

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site2] 00000
1 WebPDataInit [function] [call site2] 00001
1 WebPMuxCreate [function] [call site2] 00002
2 WebPMuxCreateInternal [function] [call site2] 00003
3 ChunkInit [function] [call site2] 00004
4 __assert_fail [call site2] 00005
3 GetLE32 [function] [call site2] 00006
4 GetLE16 [function] [call site2] 00007
3 GetLE32 [function] [call site2] 00008
3 WebPMuxNew [function] [call site2] 00009
4 WebPNewInternal [function] [call site2] 00010
5 WebPSafeMalloc [function] [call site2] 00011
6 CheckSizeArgumentsOverflow [function] [call site2] 00012
7 CheckSizeOverflow [function] [call site2] 00013
6 __assert_fail [call site2] 00014
5 MuxInit [function] [call site2] 00015
6 __assert_fail [call site2] 00016
3 GetLE32 [function] [call site2] 00017
3 GetLE32 [function] [call site2] 00018
3 SizeWithPadding [function] [call site2] 00019
4 __assert_fail [call site2] 00020
3 WebPSafeMalloc [function] [call site2] 00021
3 MuxImageInit [function] [call site2] 00022
4 __assert_fail [call site2] 00023
3 ChunkVerifyAndAssign [function] [call site2] 00024
4 GetLE32 [function] [call site2] 00025
4 SizeWithPadding [function] [call site2] 00026
4 GetLE32 [function] [call site2] 00027
4 ChunkAssignData [function] [call site2] 00028
5 ChunkRelease [function] [call site2] 00029
6 WebPDataClear [function] [call site2] 00030
7 WebPFree [function] [call site2] 00031
8 WebPSafeFree [function] [call site2] 00032
7 WebPDataInit [function] [call site2] 00033
6 ChunkInit [function] [call site2] 00034
5 WebPDataCopy [function] [call site2] 00035
6 WebPDataInit [function] [call site2] 00036
6 WebPMalloc [function] [call site2] 00037
7 WebPSafeMalloc [function] [call site2] 00038
3 ChunkDiskSize [function] [call site2] 00039
4 SizeWithPadding [function] [call site2] 00040
3 ChunkGetIdFromTag [function] [call site2] 00041
3 ChunkSetHead [function] [call site2] 00042
4 __assert_fail [call site2] 00043
4 WebPSafeMalloc [function] [call site2] 00044
3 ChunkSetHead [function] [call site2] 00045
3 MuxImageFinalize [function] [call site2] 00046
4 VP8LGetInfo [function] [call site2] 00047
5 VP8LCheckSignature [function] [call site2] 00048
5 VP8LInitBitReader [function] [call site2] 00049
6 __assert_fail [call site2] 00050
6 __assert_fail [call site2] 00051
6 __assert_fail [call site2] 00052
5 ReadImageInfo [function] [call site2] 00053
6 VP8LReadBits [function] [call site2] 00054
7 __assert_fail [call site2] 00055
7 VP8LPrefetchBits [function] [call site2] 00056
7 ShiftBytes [function] [call site2] 00057
8 VP8LIsEndOfStream [function] [call site2] 00058
9 __assert_fail [call site2] 00059
8 VP8LSetEndOfStream [function] [call site2] 00060
7 VP8LSetEndOfStream [function] [call site2] 00061
6 VP8LReadBits [function] [call site2] 00062
6 VP8LReadBits [function] [call site2] 00063
6 VP8LReadBits [function] [call site2] 00064
6 VP8LReadBits [function] [call site2] 00065
4 VP8GetInfo [function] [call site2] 00066
5 VP8CheckSignature [function] [call site2] 00067
4 __assert_fail [call site2] 00068
4 ChunkDelete [function] [call site2] 00069
5 ChunkRelease [function] [call site2] 00070
5 WebPSafeFree [function] [call site2] 00071
3 MuxImagePush [function] [call site2] 00072
4 WebPSafeMalloc [function] [call site2] 00073
3 MuxImageInit [function] [call site2] 00074
3 MuxImageParse [function] [call site2] 00075
4 ChunkInit [function] [call site2] 00076
4 __assert_fail [call site2] 00077
4 __assert_fail [call site2] 00078
4 ChunkAssignData [function] [call site2] 00079
4 ChunkSetHead [function] [call site2] 00080
4 ChunkDiskSize [function] [call site2] 00081
4 ChunkInit [function] [call site2] 00082
4 ChunkVerifyAndAssign [function] [call site2] 00083
4 ChunkGetIdFromTag [function] [call site2] 00084
4 ChunkSetHead [function] [call site2] 00085
4 ChunkSetHead [function] [call site2] 00086
4 MuxImageFinalize [function] [call site2] 00087
4 ChunkAppend [function] [call site2] 00088
5 __assert_fail [call site2] 00089
5 ChunkSetHead [function] [call site2] 00090
5 ChunkSetHead [function] [call site2] 00091
4 ChunkDiskSize [function] [call site2] 00092
4 ChunkRelease [function] [call site2] 00093
3 ChunkRelease [function] [call site2] 00094
3 MuxGetChunkListFromId [function] [call site2] 00095
4 __assert_fail [call site2] 00096
3 ChunkAppend [function] [call site2] 00097
3 GetLE24 [function] [call site2] 00098
4 GetLE16 [function] [call site2] 00099
3 GetLE24 [function] [call site2] 00100
3 ChunkInit [function] [call site2] 00101
3 MuxValidate [function] [call site2] 00102
4 WebPMuxGetFeatures [function] [call site2] 00103
5 MuxGetCanvasInfo [function] [call site2] 00104
6 __assert_fail [call site2] 00105
6 MuxGet [function] [call site2] 00106
7 __assert_fail [call site2] 00107
7 IsWPI [function] [call site2] 00108
7 __assert_fail [call site2] 00109
7 WebPDataInit [function] [call site2] 00110
7 ChunkSearchList [function] [call site2] 00111
8 ChunkSearchNextInList [function] [call site2] 00112
7 ChunkSearchList [function] [call site2] 00113
7 ChunkSearchList [function] [call site2] 00114
7 ChunkSearchList [function] [call site2] 00115
7 ChunkSearchList [function] [call site2] 00116
6 GetLE32 [function] [call site2] 00117
6 GetLE24 [function] [call site2] 00118
6 GetLE24 [function] [call site2] 00119
6 ValidateForSingleImage [function] [call site2] 00120
7 MuxImageCount [function] [call site2] 00121
8 GetChunkListFromId [function] [call site2] 00122
9 __assert_fail [call site2] 00123
8 ChunkGetIdFromTag [function] [call site2] 00124
7 MuxImageCount [function] [call site2] 00125
6 __assert_fail [call site2] 00126
4 ValidateChunk [function] [call site2] 00127
5 WebPMuxNumChunks [function] [call site2] 00128
6 IsWPI [function] [call site2] 00129
6 MuxImageCount [function] [call site2] 00130
6 MuxGetChunkListFromId [function] [call site2] 00131
6 ChunkGetIndexFromId [function] [call site2] 00132
6 CountChunks [function] [call site2] 00133
5 IsNotCompatible [function] [call site2] 00134
4 ValidateChunk [function] [call site2] 00135
4 ValidateChunk [function] [call site2] 00136
4 ValidateChunk [function] [call site2] 00137
4 ValidateChunk [function] [call site2] 00138
4 ValidateChunk [function] [call site2] 00139
4 ValidateChunk [function] [call site2] 00140
4 MuxHasAlpha [function] [call site2] 00141
4 WebPMuxNumChunks [function] [call site2] 00142
3 MuxImageDelete [function] [call site2] 00143
4 MuxImageRelease [function] [call site2] 00144
5 ChunkListDelete [function] [call site2] 00145
6 ChunkDelete [function] [call site2] 00146
5 ChunkListDelete [function] [call site2] 00147
5 ChunkListDelete [function] [call site2] 00148
5 MuxImageInit [function] [call site2] 00149
4 WebPSafeFree [function] [call site2] 00150
3 ChunkRelease [function] [call site2] 00151
3 MuxImageDelete [function] [call site2] 00152
3 WebPMuxDelete [function] [call site2] 00153
4 MuxRelease [function] [call site2] 00154
5 __assert_fail [call site2] 00155
5 DeleteAllImages [function] [call site2] 00156
5 ChunkListDelete [function] [call site2] 00157
5 ChunkListDelete [function] [call site2] 00158
5 ChunkListDelete [function] [call site2] 00159
5 ChunkListDelete [function] [call site2] 00160
5 ChunkListDelete [function] [call site2] 00161
5 ChunkListDelete [function] [call site2] 00162
4 WebPSafeFree [function] [call site2] 00163
1 WebPMuxGetChunk [function] [call site2] 00164
2 ChunkGetIndexFromFourCC [function] [call site2] 00165
3 ChunkGetTagFromFourCC [function] [call site2] 00166
3 ChunkGetIndexFromTag [function] [call site2] 00167
2 IsWPI [function] [call site2] 00168
2 MuxGet [function] [call site2] 00169
2 ChunkGetTagFromFourCC [function] [call site2] 00170
1 WebPMuxGetChunk [function] [call site2] 00171
1 WebPMuxGetChunk [function] [call site2] 00172
1 WebPMuxGetFeatures [function] [call site2] 00173
1 WebPMuxGetAnimationParams [function] [call site2] 00174
2 MuxGet [function] [call site2] 00175
2 GetLE32 [function] [call site2] 00176
2 GetLE16 [function] [call site2] 00177
1 WebPMuxGetFrame [function] [call site2] 00178
2 MuxImageGetNth [function] [call site2] 00179
3 __assert_fail [call site2] 00180
3 __assert_fail [call site2] 00181
3 SearchImageToGetOrDelete [function] [call site2] 00182
4 __assert_fail [call site2] 00183
4 MuxImageCount [function] [call site2] 00184
2 MuxGetImageInternal [function] [call site2] 00185
3 SynthesizeBitstream [function] [call site2] 00186
4 ChunkDiskSize [function] [call site2] 00187
4 ChunkDiskSize [function] [call site2] 00188
4 WebPSafeMalloc [function] [call site2] 00189
4 __assert_fail [call site2] 00190
4 __assert_fail [call site2] 00191
4 MuxEmitRiffHeader [function] [call site2] 00192
5 PutLE32 [function] [call site2] 00193
6 PutLE16 [function] [call site2] 00194
7 __assert_fail [call site2] 00195
6 PutLE16 [function] [call site2] 00196
5 PutLE32 [function] [call site2] 00197
5 __assert_fail [call site2] 00198
5 PutLE32 [function] [call site2] 00199
4 EmitVP8XChunk [function] [call site2] 00200
5 __assert_fail [call site2] 00201
5 __assert_fail [call site2] 00202
5 __assert_fail [call site2] 00203
5 PutLE32 [function] [call site2] 00204
5 PutLE32 [function] [call site2] 00205
5 PutLE32 [function] [call site2] 00206
5 PutLE24 [function] [call site2] 00207
6 __assert_fail [call site2] 00208
6 PutLE16 [function] [call site2] 00209
5 PutLE24 [function] [call site2] 00210
4 ChunkListEmit [function] [call site2] 00211
5 ChunkEmit [function] [call site2] 00212
6 __assert_fail [call site2] 00213
6 __assert_fail [call site2] 00214
6 PutLE32 [function] [call site2] 00215
6 PutLE32 [function] [call site2] 00216
6 __assert_fail [call site2] 00217
6 ChunkDiskSize [function] [call site2] 00218
4 ChunkListEmit [function] [call site2] 00219
4 __assert_fail [call site2] 00220
2 MuxGetFrameInternal [function] [call site2] 00221
3 __assert_fail [call site2] 00222
3 GetLE24 [function] [call site2] 00223
3 GetLE24 [function] [call site2] 00224
3 GetLE24 [function] [call site2] 00225
3 ChunkGetIdFromTag [function] [call site2] 00226
1 WebPDataClear [function] [call site2] 00227
2 WebPDataInit [function] [call site2] 00228
1 WebPMuxDelete [function] [call site2] 00229
1 WebPDemuxPartial [function] [call site2] 00230
2 WebPDemuxInternal [function] [call site2] 00231
3 InitMemBuffer [function] [call site2] 00232
4 RemapMemBuffer [function] [call site2] 00233
3 ReadHeader [function] [call site2] 00234
4 MemDataSize [function] [call site2] 00235
4 GetBuffer [function] [call site2] 00236
4 memcmp [call site2] 00237
4 GetBuffer [function] [call site2] 00238
4 memcmp [call site2] 00239
4 GetBuffer [function] [call site2] 00240
4 GetLE32 [function] [call site2] 00241
5 GetLE16 [function] [call site2] 00242
4 Skip [function] [call site2] 00243
3 CreateRawImageDemuxer [function] [call site2] 00244
4 WebPGetFeatures [function] [call site2] 00245
5 WebPGetFeaturesInternal [function] [call site2] 00246
6 GetFeatures [function] [call site2] 00247
7 DefaultFeatures [function] [call site2] 00248
8 __assert_fail [call site2] 00249
7 ParseHeadersInternal [function] [call site2] 00250
8 ParseRIFF [function] [call site2] 00251
9 __assert_fail [call site2] 00252
9 __assert_fail [call site2] 00253
9 __assert_fail [call site2] 00254
9 memcmp [call site2] 00255
9 memcmp [call site2] 00256
9 GetLE32 [function] [call site2] 00257
10 GetLE16 [function] [call site2] 00258
8 ParseVP8X [function] [call site2] 00259
9 __assert_fail [call site2] 00260
9 __assert_fail [call site2] 00261
9 __assert_fail [call site2] 00262
9 GetLE32 [function] [call site2] 00263
9 GetLE32 [function] [call site2] 00264
9 GetLE24 [function] [call site2] 00265
10 GetLE16 [function] [call site2] 00266
9 GetLE24 [function] [call site2] 00267
8 memcmp [call site2] 00268
8 ParseOptionalChunks [function] [call site2] 00269
9 __assert_fail [call site2] 00270
9 __assert_fail [call site2] 00271
9 __assert_fail [call site2] 00272
9 __assert_fail [call site2] 00273
9 GetLE32 [function] [call site2] 00274
9 memcmp [call site2] 00275
9 memcmp [call site2] 00276
9 memcmp [call site2] 00277
8 ParseVP8Header [function] [call site2] 00278
9 memcmp [call site2] 00279
9 memcmp [call site2] 00280
9 __assert_fail [call site2] 00281
9 __assert_fail [call site2] 00282
9 __assert_fail [call site2] 00283
9 __assert_fail [call site2] 00284
9 GetLE32 [function] [call site2] 00285
9 VP8LCheckSignature [function] [call site2] 00286
8 VP8GetInfo [function] [call site2] 00287
8 VP8LGetInfo [function] [call site2] 00288
8 __assert_fail [call site2] 00289
8 __assert_fail [call site2] 00290
4 WebPSafeCalloc [function] [call site2] 00291
5 CheckSizeArgumentsOverflow [function] [call site2] 00292
5 __assert_fail [call site2] 00293
4 WebPSafeCalloc [function] [call site2] 00294
4 InitDemux [function] [call site2] 00295
4 SetFrameInfo [function] [call site2] 00296
4 AddFrame [function] [call site2] 00297
4 IsValidSimpleFormat [function] [call site2] 00298
4 __assert_fail [call site2] 00299
4 WebPSafeFree [function] [call site2] 00300
4 WebPSafeFree [function] [call site2] 00301
3 WebPSafeCalloc [function] [call site2] 00302
3 InitDemux [function] [call site2] 00303
3 GetBuffer [function] [call site2] 00304
3 memcmp [call site2] 00305
3 WebPDemuxDelete [function] [call site2] 00306
4 WebPSafeFree [function] [call site2] 00307
4 WebPSafeFree [function] [call site2] 00308
4 WebPSafeFree [function] [call site2] 00309
1 WebPDemuxDelete [function] [call site2] 00310
1 WebPDemux [function] [call site2] 00311
2 WebPDemuxInternal [function] [call site2] 00312
1 WebPDemuxGetChunk [function] [call site2] 00313
2 SetChunk [function] [call site2] 00314
3 ChunkCount [function] [call site2] 00315
4 memcmp [call site2] 00316
3 GetChunk [function] [call site2] 00317
4 memcmp [call site2] 00318
1 WebPDemuxNextChunk [function] [call site2] 00319
2 SetChunk [function] [call site2] 00320
1 WebPDemuxReleaseChunkIterator [function] [call site2] 00321
1 WebPDemuxGetChunk [function] [call site2] 00322
1 WebPDemuxPrevChunk [function] [call site2] 00323
2 SetChunk [function] [call site2] 00324
1 WebPDemuxReleaseChunkIterator [function] [call site2] 00325
1 WebPDemuxGetFrame [function] [call site2] 00326
2 SetFrame [function] [call site2] 00327
3 GetFrame [function] [call site2] 00328
3 SynthesizeFrame [function] [call site2] 00329
4 GetFramePayload [function] [call site2] 00330
4 __assert_fail [call site2] 00331
1 WebPDemuxNextFrame [function] [call site2] 00332
2 SetFrame [function] [call site2] 00333
1 WebPDemuxReleaseIterator [function] [call site2] 00334
1 WebPDemuxDelete [function] [call site2] 00335