Fuzz introspector: ZydisFuzzDecoder
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
7 216 ZydisSetAVXInformation call site: 00216 __assert_fail
4 128 ZydisNodeHandlerRexB call site: 00128 __assert_fail
4 344 ZydisSetOperandSizeAndElementInfo call site: 00344 __assert_fail
3 47 ZydisDecodeModRM call site: 00047 __assert_fail
3 159 ZydisSetAttributes call site: 00159 __assert_fail
3 296 ZydisDecodeOperands call site: 00296 ZydisDecodeOperandRegister
2 104 ZydisTreeWalkFilters call site: 00104 ZydisDecodeModRM
2 280 ZydisDecodeOperandImplicitMemory call site: 00280 ZydisCalcRegisterId
2 385 ZydisValidateEnumRanges call site: 00385 fprintf
1 19 ZydisNodeHandlerXOP call site: 00019 __assert_fail
1 22 ZydisNodeHandlerVEX call site: 00022 __assert_fail
1 26 ZydisNodeHandlerEMVEX call site: 00026 __assert_fail

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 ZydisFuzzTarget [function] [call site] 00001
2 ZydisDecoderInit [function] [call site] 00002
2 ZydisDecoderEnableMode [function] [call site] 00003
2 ZydisDecoderDecodeFull [function] [call site] 00004
3 ZydisDecoderDecodeInstruction [function] [call site] 00005
4 ZydisCollectOptionalPrefixes [function] [call site] 00006
5 ZydisInputPeek [function] [call site] 00007
5 __assert_fail [call site] 00008
5 ZydisInputSkip [function] [call site] 00009
6 __assert_fail [call site] 00010
5 ZydisDecodeREX [function] [call site] 00011
6 __assert_fail [call site] 00012
4 ZydisDecodeInstruction [function] [call site] 00013
5 ZydisGetOpcodeTableRootNode [function] [call site] 00014
6 __assert_fail [call site] 00015
5 ZydisGetOpcodeTableRootNode [function] [call site] 00016
5 __assert_fail [call site] 00017
5 ZydisNodeHandlerXOP [function] [call site] 00018
6 __assert_fail [call site] 00019
6 __assert_fail [call site] 00020
5 ZydisNodeHandlerVEX [function] [call site] 00021
6 __assert_fail [call site] 00022
6 __assert_fail [call site] 00023
5 ZydisNodeHandlerEMVEX [function] [call site] 00024
6 __assert_fail [call site] 00025
6 __assert_fail [call site] 00026
6 __assert_fail [call site] 00027
5 ZydisNodeHandlerREX2 [function] [call site] 00028
6 __assert_fail [call site] 00029
6 __assert_fail [call site] 00030
5 ZydisGetInstructionDefinition [function] [call site] 00031
6 __assert_fail [call site] 00032
5 ZydisSetEffectiveOperandWidth [function] [call site] 00033
6 __assert_fail [call site] 00034
6 __assert_fail [call site] 00035
5 ZydisSetEffectiveAddressWidth [function] [call site] 00036
6 __assert_fail [call site] 00037
6 __assert_fail [call site] 00038
5 ZydisGetInstructionEncodingInfo [function] [call site] 00039
6 __assert_fail [call site] 00040
6 __assert_fail [call site] 00041
5 ZydisDecodeOptionalInstructionParts [function] [call site] 00042
6 __assert_fail [call site] 00043
6 ZydisInputNext [function] [call site] 00044
6 ZydisDecodeModRM [function] [call site] 00045
7 __assert_fail [call site] 00046
7 __assert_fail [call site] 00047
6 __assert_fail [call site] 00048
6 __assert_fail [call site] 00049
6 __assert_fail [call site] 00050
6 ZydisInputNext [function] [call site] 00051
6 ZydisDecodeSIB [function] [call site] 00052
7 __assert_fail [call site] 00053
7 __assert_fail [call site] 00054
7 __assert_fail [call site] 00055
7 __assert_fail [call site] 00056
6 ZydisReadDisplacement [function] [call site] 00057
7 __assert_fail [call site] 00058
7 ZydisInputNext [function] [call site] 00059
7 ZydisInputNextBytes [function] [call site] 00060
7 ZydisInputNextBytes [function] [call site] 00061
7 ZydisInputNextBytes [function] [call site] 00062
7 __assert_fail [call site] 00063
6 ZydisReadDisplacement [function] [call site] 00064
6 ZydisReadImmediate [function] [call site] 00065
7 __assert_fail [call site] 00066
7 __assert_fail [call site] 00067
7 ZydisInputNext [function] [call site] 00068
7 ZydisInputNextBytes [function] [call site] 00069
7 ZydisInputNextBytes [function] [call site] 00070
7 ZydisInputNextBytes [function] [call site] 00071
7 __assert_fail [call site] 00072
6 __assert_fail [call site] 00073
6 ZydisReadImmediate [function] [call site] 00074
5 ZydisCheckErrorConditions [function] [call site] 00075
6 __assert_fail [call site] 00076
6 __assert_fail [call site] 00077
6 __assert_fail [call site] 00078
6 __assert_fail [call site] 00079
6 ZydisPopulateRegisterIds [function] [call site] 00080
7 __assert_fail [call site] 00081
7 __assert_fail [call site] 00082
6 __assert_fail [call site] 00083
6 __assert_fail [call site] 00084
6 __assert_fail [call site] 00085
6 __assert_fail [call site] 00086
6 __assert_fail [call site] 00087
6 __assert_fail [call site] 00088
6 __assert_fail [call site] 00089
5 ZydisInputNext [function] [call site] 00090
5 ZydisGetOpcodeTableRootNode [function] [call site] 00091
5 ZydisTreeWalkFilters [function] [call site] 00092
6 ZydisNodeHandlerMode [function] [call site] 00093
7 __assert_fail [call site] 00094
6 ZydisNodeHandlerModeCompact [function] [call site] 00095
6 ZydisNodeHandlerModrmMod [function] [call site] 00096
7 ZydisInputNext [function] [call site] 00097
7 ZydisDecodeModRM [function] [call site] 00098
6 ZydisNodeHandlerModrmModCompact [function] [call site] 00099
7 ZydisNodeHandlerModrmMod [function] [call site] 00100
6 ZydisNodeHandlerModrmReg [function] [call site] 00101
7 ZydisInputNext [function] [call site] 00102
7 ZydisDecodeModRM [function] [call site] 00103
6 ZydisNodeHandlerModrmRm [function] [call site] 00104
7 ZydisInputNext [function] [call site] 00105
7 ZydisDecodeModRM [function] [call site] 00106
6 ZydisNodeHandlerMandatoryPrefix [function] [call site] 00107
6 ZydisNodeHandlerOperandSize [function] [call site] 00108
7 __assert_fail [call site] 00109
6 ZydisNodeHandlerAddressSize [function] [call site] 00110
7 __assert_fail [call site] 00111
6 ZydisNodeHandlerVectorLength [function] [call site] 00112
7 __assert_fail [call site] 00113
7 __assert_fail [call site] 00114
7 __assert_fail [call site] 00115
7 __assert_fail [call site] 00116
7 __assert_fail [call site] 00117
7 __assert_fail [call site] 00118
6 ZydisNodeHandlerRexW [function] [call site] 00119
7 __assert_fail [call site] 00120
7 __assert_fail [call site] 00121
7 __assert_fail [call site] 00122
7 __assert_fail [call site] 00123
7 __assert_fail [call site] 00124
7 __assert_fail [call site] 00125
7 __assert_fail [call site] 00126
6 ZydisNodeHandlerRexB [function] [call site] 00127
7 __assert_fail [call site] 00128
7 __assert_fail [call site] 00129
7 __assert_fail [call site] 00130
7 __assert_fail [call site] 00131
7 __assert_fail [call site] 00132
7 __assert_fail [call site] 00133
7 __assert_fail [call site] 00134
6 ZydisNodeHandlerEvexU [function] [call site] 00135
7 __assert_fail [call site] 00136
7 __assert_fail [call site] 00137
7 ZydisInputNext [function] [call site] 00138
7 ZydisDecodeModRM [function] [call site] 00139
6 ZydisNodeHandlerEvexB [function] [call site] 00140
7 __assert_fail [call site] 00141
7 __assert_fail [call site] 00142
6 ZydisNodeHandlerMvexE [function] [call site] 00143
7 __assert_fail [call site] 00144
7 __assert_fail [call site] 00145
6 ZydisNodeHandlerEvexND [function] [call site] 00146
7 __assert_fail [call site] 00147
7 __assert_fail [call site] 00148
6 ZydisNodeHandlerEvexNF [function] [call site] 00149
7 __assert_fail [call site] 00150
7 __assert_fail [call site] 00151
6 ZydisNodeHandlerEvexSCC [function] [call site] 00152
7 __assert_fail [call site] 00153
7 __assert_fail [call site] 00154
6 __assert_fail [call site] 00155
5 ZydisGetInstructionDefinition [function] [call site] 00156
5 __assert_fail [call site] 00157
5 ZydisSetAttributes [function] [call site] 00158
6 __assert_fail [call site] 00159
6 __assert_fail [call site] 00160
6 __assert_fail [call site] 00161
6 __assert_fail [call site] 00162
5 ZydisSetAVXInformation [function] [call site] 00163
6 __assert_fail [call site] 00164
6 __assert_fail [call site] 00165
6 __assert_fail [call site] 00166
6 __assert_fail [call site] 00167
6 __assert_fail [call site] 00168
6 __assert_fail [call site] 00169
6 __assert_fail [call site] 00170
6 __assert_fail [call site] 00171
6 __assert_fail [call site] 00172
6 __assert_fail [call site] 00173
6 __assert_fail [call site] 00174
6 __assert_fail [call site] 00175
6 __assert_fail [call site] 00176
6 __assert_fail [call site] 00177
6 __assert_fail [call site] 00178
6 __assert_fail [call site] 00179
6 __assert_fail [call site] 00180
6 __assert_fail [call site] 00181
6 __assert_fail [call site] 00182
6 __assert_fail [call site] 00183
6 __assert_fail [call site] 00184
6 __assert_fail [call site] 00185
6 __assert_fail [call site] 00186
6 __assert_fail [call site] 00187
6 __assert_fail [call site] 00188
6 __assert_fail [call site] 00189
6 __assert_fail [call site] 00190
6 __assert_fail [call site] 00191
6 __assert_fail [call site] 00192
6 __assert_fail [call site] 00193
6 __assert_fail [call site] 00194
6 __assert_fail [call site] 00195
6 __assert_fail [call site] 00196
6 __assert_fail [call site] 00197
6 __assert_fail [call site] 00198
6 __assert_fail [call site] 00199
6 __assert_fail [call site] 00200
6 __assert_fail [call site] 00201
6 __assert_fail [call site] 00202
6 __assert_fail [call site] 00203
6 __assert_fail [call site] 00204
6 __assert_fail [call site] 00205
6 __assert_fail [call site] 00206
6 __assert_fail [call site] 00207
6 __assert_fail [call site] 00208
6 __assert_fail [call site] 00209
6 __assert_fail [call site] 00210
6 __assert_fail [call site] 00211
6 __assert_fail [call site] 00212
6 __assert_fail [call site] 00213
6 __assert_fail [call site] 00214
6 __assert_fail [call site] 00215
6 __assert_fail [call site] 00216
6 __assert_fail [call site] 00217
6 __assert_fail [call site] 00218
6 __assert_fail [call site] 00219
6 __assert_fail [call site] 00220
6 __assert_fail [call site] 00221
6 __assert_fail [call site] 00222
6 __assert_fail [call site] 00223
6 __assert_fail [call site] 00224
5 ZydisGetAccessedFlags [function] [call site] 00225
6 __assert_fail [call site] 00226
5 ZydisTreeWalkFilters [function] [call site] 00227
5 ZydisNodeHandlerOpcode [function] [call site] 00228
6 ZydisInputNext [function] [call site] 00229
6 ZydisInputPeek [function] [call site] 00230
6 __assert_fail [call site] 00231
6 ZydisInputNextBytes [function] [call site] 00232
6 __assert_fail [call site] 00233
6 ZydisInputNext [function] [call site] 00234
6 __assert_fail [call site] 00235
6 __assert_fail [call site] 00236
6 ZydisInputNextBytes [function] [call site] 00237
6 __assert_fail [call site] 00238
6 ZydisDecodeVEX [function] [call site] 00239
7 __assert_fail [call site] 00240
7 __assert_fail [call site] 00241
7 __assert_fail [call site] 00242
7 __assert_fail [call site] 00243
6 ZydisDecodeMVEX [function] [call site] 00244
7 __assert_fail [call site] 00245
7 __assert_fail [call site] 00246
6 ZydisDecodeEVEX [function] [call site] 00247
7 __assert_fail [call site] 00248
7 __assert_fail [call site] 00249
6 __assert_fail [call site] 00250
6 ZydisInputPeek [function] [call site] 00251
6 ZydisInputNextBytes [function] [call site] 00252
6 ZydisDecodeXOP [function] [call site] 00253
7 __assert_fail [call site] 00254
7 __assert_fail [call site] 00255
7 __assert_fail [call site] 00256
6 ZydisInputNext [function] [call site] 00257
6 ZydisDecodeREX2 [function] [call site] 00258
7 __assert_fail [call site] 00259
6 __assert_fail [call site] 00260
6 ZydisInputNext [function] [call site] 00261
3 ZydisDecoderDecodeOperands [function] [call site] 00262
4 ZydisDecodeOperands [function] [call site] 00263
5 __assert_fail [call site] 00264
5 __assert_fail [call site] 00265
5 __assert_fail [call site] 00266
5 ZydisGetOperandDefinitions [function] [call site] 00267
6 __assert_fail [call site] 00268
5 ZydisGetOperandDetails [function] [call site] 00269
5 ZydisDecodeOperandImplicitRegister [function] [call site] 00270
6 __assert_fail [call site] 00271
6 ZydisRegisterEncode [function] [call site] 00272
6 ZydisRegisterEncode [function] [call site] 00273
6 ZydisRegisterEncode [function] [call site] 00274
6 __assert_fail [call site] 00275
5 ZydisDecodeOperandImplicitMemory [function] [call site] 00276
6 __assert_fail [call site] 00277
6 ZydisCalcRegisterId [function] [call site] 00278
7 __assert_fail [call site] 00279
6 ZydisRegisterEncode [function] [call site] 00280
6 ZydisCalcRegisterId [function] [call site] 00281
6 ZydisRegisterEncode [function] [call site] 00282
6 ZydisRegisterEncode [function] [call site] 00283
6 ZydisRegisterEncode [function] [call site] 00284
6 ZydisRegisterEncode [function] [call site] 00285
6 ZydisRegisterEncode [function] [call site] 00286
6 ZydisRegisterEncode [function] [call site] 00287
6 ZydisRegisterEncode [function] [call site] 00288
6 ZydisRegisterEncode [function] [call site] 00289
6 __assert_fail [call site] 00290
6 ZydisRegisterEncode [function] [call site] 00291
6 __assert_fail [call site] 00292
5 __assert_fail [call site] 00293
5 __assert_fail [call site] 00294
5 __assert_fail [call site] 00295
5 __assert_fail [call site] 00296
5 __assert_fail [call site] 00297
5 ZydisCalcRegisterId [function] [call site] 00298
5 ZydisDecodeOperandRegister [function] [call site] 00299
6 ZydisRegisterEncode [function] [call site] 00300
6 __assert_fail [call site] 00301
5 ZydisDecodeOperandMemory [function] [call site] 00302
6 __assert_fail [call site] 00303
6 __assert_fail [call site] 00304
6 __assert_fail [call site] 00305
6 __assert_fail [call site] 00306
6 ZydisCalcRegisterId [function] [call site] 00307
6 __assert_fail [call site] 00308
6 __assert_fail [call site] 00309
6 ZydisCalcRegisterId [function] [call site] 00310
6 ZydisRegisterEncode [function] [call site] 00311
6 ZydisCalcRegisterId [function] [call site] 00312
6 __assert_fail [call site] 00313
6 __assert_fail [call site] 00314
6 ZydisCalcRegisterId [function] [call site] 00315
6 ZydisRegisterEncode [function] [call site] 00316
6 __assert_fail [call site] 00317
6 __assert_fail [call site] 00318
5 ZydisDecodeOperandMemory [function] [call site] 00319
5 ZydisDecodeOperandMemory [function] [call site] 00320
5 ZydisDecodeOperandMemory [function] [call site] 00321
5 __assert_fail [call site] 00322
5 __assert_fail [call site] 00323
5 ZydisDecodeOperandMemory [function] [call site] 00324
5 __assert_fail [call site] 00325
5 ZydisDecodeOperandMemory [function] [call site] 00326
5 __assert_fail [call site] 00327
5 __assert_fail [call site] 00328
5 __assert_fail [call site] 00329
5 ZydisGetOperandSizes [function] [call site] 00330
5 __assert_fail [call site] 00331
5 __assert_fail [call site] 00332
5 ZydisSetOperandSizeAndElementInfo [function] [call site] 00333
6 __assert_fail [call site] 00334
6 ZydisGetOperandSizes [function] [call site] 00335
6 ZydisRegisterGetWidth [function] [call site] 00336
6 __assert_fail [call site] 00337
6 __assert_fail [call site] 00338
6 __assert_fail [call site] 00339
6 __assert_fail [call site] 00340
6 __assert_fail [call site] 00341
6 __assert_fail [call site] 00342
6 __assert_fail [call site] 00343
6 __assert_fail [call site] 00344
6 __assert_fail [call site] 00345
6 __assert_fail [call site] 00346
6 __assert_fail [call site] 00347
6 __assert_fail [call site] 00348
6 __assert_fail [call site] 00349
6 __assert_fail [call site] 00350
6 __assert_fail [call site] 00351
6 ZydisGetElementInfo [function] [call site] 00352
7 __assert_fail [call site] 00353
2 ZydisValidateEnumRanges [function] [call site] 00354
3 fprintf [call site] 00355
3 abort [call site] 00356
3 fprintf [call site] 00357
3 abort [call site] 00358
3 fprintf [call site] 00359
3 abort [call site] 00360
3 fprintf [call site] 00361
3 abort [call site] 00362
3 fprintf [call site] 00363
3 abort [call site] 00364
3 fprintf [call site] 00365
3 abort [call site] 00366
3 fprintf [call site] 00367
3 abort [call site] 00368
3 fprintf [call site] 00369
3 abort [call site] 00370
3 fprintf [call site] 00371
3 abort [call site] 00372
3 fprintf [call site] 00373
3 abort [call site] 00374
3 fprintf [call site] 00375
3 abort [call site] 00376
3 fprintf [call site] 00377
3 abort [call site] 00378
3 fprintf [call site] 00379
3 abort [call site] 00380
3 fprintf [call site] 00381
3 abort [call site] 00382
3 fprintf [call site] 00383
3 abort [call site] 00384
3 ZydisValidateImmediateSize [function] [call site] 00385
4 fprintf [call site] 00386
4 abort [call site] 00387
3 fprintf [call site] 00388
3 abort [call site] 00389
3 fprintf [call site] 00390
3 abort [call site] 00391
3 fprintf [call site] 00392
3 abort [call site] 00393
3 ZydisValidateImmediateSize [function] [call site] 00394
3 fprintf [call site] 00395
3 abort [call site] 00396
3 fprintf [call site] 00397
3 abort [call site] 00398
3 fprintf [call site] 00399
3 abort [call site] 00400
3 fprintf [call site] 00401
3 abort [call site] 00402
3 fprintf [call site] 00403
3 abort [call site] 00404
3 fprintf [call site] 00405
3 abort [call site] 00406
3 fprintf [call site] 00407
3 abort [call site] 00408
3 fprintf [call site] 00409
3 abort [call site] 00410
3 fprintf [call site] 00411
3 abort [call site] 00412
3 fprintf [call site] 00413
3 abort [call site] 00414
3 fprintf [call site] 00415
3 abort [call site] 00416
3 fprintf [call site] 00417
3 abort [call site] 00418
3 fprintf [call site] 00419
3 abort [call site] 00420
3 fprintf [call site] 00421
3 abort [call site] 00422
3 fprintf [call site] 00423
3 abort [call site] 00424
3 fprintf [call site] 00425
3 abort [call site] 00426
3 fprintf [call site] 00427
3 abort [call site] 00428
3 fprintf [call site] 00429
3 abort [call site] 00430
2 ZydisFormatterInit [function] [call site] 00431
2 ZydisFormatterSetProperty [function] [call site] 00432
3 strlen [call site] 00433
2 ZydisFormatterFormatInstruction [function] [call site] 00434
3 ZydisFormatterBufferInit [function] [call site] 00435
2 ZydisFormatterTokenizeInstruction [function] [call site] 00436
3 ZydisFormatterBufferInitTokenized [function] [call site] 00437
2 ZydisFormatterTokenGetValue [function] [call site] 00438
2 ZydisFormatterTokenNext [function] [call site] 00439
2 ZydisFormatterFormatOperand [function] [call site] 00440
3 ZydisFormatterBufferInit [function] [call site] 00441
2 ZydisFormatterTokenizeOperand [function] [call site] 00442
3 ZydisFormatterBufferInitTokenized [function] [call site] 00443
2 ZydisCalcAbsoluteAddress [function] [call site] 00444
2 ZydisMnemonicGetString [function] [call site] 00445
2 ZydisMnemonicGetStringWrapped [function] [call site] 00446
2 ZydisGetInstructionSegments [function] [call site] 00447
3 __assert_fail [call site] 00448
2 ZydisIsFeatureEnabled [function] [call site] 00449
2 ZydisRegisterEncode [function] [call site] 00450
2 ZydisRegisterGetId [function] [call site] 00451
2 ZydisRegisterGetClass [function] [call site] 00452
2 ZydisRegisterGetWidth [function] [call site] 00453
2 ZydisRegisterGetLargestEnclosing [function] [call site] 00454
3 __assert_fail [call site] 00455
3 __assert_fail [call site] 00456
2 ZydisRegisterGetString [function] [call site] 00457
2 ZydisRegisterGetStringWrapped [function] [call site] 00458
2 ZydisRegisterClassGetWidth [function] [call site] 00459
1 ZydisLibFuzzerRead [function] [call site] 00460