Fuzz introspector: ZydisFuzzDecoder
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 :

['fputs']

2 2 ZydisFuzzerInit call site: 00000 /src/zydis/build/../tools/ZydisFuzzShared.c:532
0 0 None 0 0 ZydisFuzzTarget call site: 00003 /src/zydis/build/../tools/ZydisFuzzDecoder.c:81
0 0 None 0 0 ZydisLibFuzzerRead call site: 00526 /src/zydis/build/../tools/ZydisFuzzShared.c:77

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 ZydisFormatterInit [function] [call site] 00004
2 ZydisFormatterSetProperty [function] [call site] 00005
3 strlen [call site] 00006
2 ZydisDecoderDecodeFull [function] [call site] 00007
3 ZydisDecoderDecodeInstruction [function] [call site] 00008
4 ZydisCollectOptionalPrefixes [function] [call site] 00009
5 __assert_fail [call site] 00010
5 ZydisInputPeek [function] [call site] 00011
6 __assert_fail [call site] 00012
5 __assert_fail [call site] 00013
5 ZydisInputSkip [function] [call site] 00014
6 __assert_fail [call site] 00015
5 ZydisDecodeREX [function] [call site] 00016
6 __assert_fail [call site] 00017
4 ZydisDecodeInstruction [function] [call site] 00018
5 __assert_fail [call site] 00019
5 ZydisNodeHandlerXOP [function] [call site] 00020
6 __assert_fail [call site] 00021
6 __assert_fail [call site] 00022
6 __assert_fail [call site] 00023
5 ZydisNodeHandlerVEX [function] [call site] 00024
6 __assert_fail [call site] 00025
6 __assert_fail [call site] 00026
6 __assert_fail [call site] 00027
5 ZydisNodeHandlerEMVEX [function] [call site] 00028
6 __assert_fail [call site] 00029
6 __assert_fail [call site] 00030
6 __assert_fail [call site] 00031
6 __assert_fail [call site] 00032
5 ZydisNodeHandlerREX2 [function] [call site] 00033
6 __assert_fail [call site] 00034
6 __assert_fail [call site] 00035
6 __assert_fail [call site] 00036
5 ZydisNodeHandlerOpcode [function] [call site] 00037
6 __assert_fail [call site] 00038
6 ZydisInputNext [function] [call site] 00039
7 __assert_fail [call site] 00040
6 ZydisInputPeek [function] [call site] 00041
6 __assert_fail [call site] 00042
6 ZydisInputNextBytes [function] [call site] 00043
7 __assert_fail [call site] 00044
6 __assert_fail [call site] 00045
6 ZydisInputNext [function] [call site] 00046
6 __assert_fail [call site] 00047
6 __assert_fail [call site] 00048
6 ZydisInputNextBytes [function] [call site] 00049
6 __assert_fail [call site] 00050
6 ZydisDecodeVEX [function] [call site] 00051
7 __assert_fail [call site] 00052
7 __assert_fail [call site] 00053
7 __assert_fail [call site] 00054
7 __assert_fail [call site] 00055
6 ZydisDecodeMVEX [function] [call site] 00056
7 __assert_fail [call site] 00057
7 __assert_fail [call site] 00058
6 ZydisDecodeEVEX [function] [call site] 00059
7 __assert_fail [call site] 00060
7 __assert_fail [call site] 00061
6 __assert_fail [call site] 00062
6 ZydisInputPeek [function] [call site] 00063
6 ZydisInputNextBytes [function] [call site] 00064
6 ZydisDecodeXOP [function] [call site] 00065
7 __assert_fail [call site] 00066
7 __assert_fail [call site] 00067
7 __assert_fail [call site] 00068
6 ZydisInputNext [function] [call site] 00069
6 ZydisDecodeREX2 [function] [call site] 00070
7 __assert_fail [call site] 00071
6 __assert_fail [call site] 00072
6 ZydisInputNext [function] [call site] 00073
5 ZydisNodeHandlerMode [function] [call site] 00074
6 __assert_fail [call site] 00075
6 __assert_fail [call site] 00076
5 ZydisNodeHandlerModeCompact [function] [call site] 00077
6 __assert_fail [call site] 00078
5 ZydisNodeHandlerModrmMod [function] [call site] 00079
6 __assert_fail [call site] 00080
6 ZydisInputNext [function] [call site] 00081
6 ZydisDecodeModRM [function] [call site] 00082
7 __assert_fail [call site] 00083
7 __assert_fail [call site] 00084
5 ZydisNodeHandlerModrmModCompact [function] [call site] 00085
6 ZydisNodeHandlerModrmMod [function] [call site] 00086
5 ZydisNodeHandlerModrmReg [function] [call site] 00087
6 __assert_fail [call site] 00088
6 ZydisInputNext [function] [call site] 00089
6 ZydisDecodeModRM [function] [call site] 00090
5 ZydisNodeHandlerModrmRm [function] [call site] 00091
6 __assert_fail [call site] 00092
6 ZydisInputNext [function] [call site] 00093
6 ZydisDecodeModRM [function] [call site] 00094
5 ZydisNodeHandlerMandatoryPrefix [function] [call site] 00095
6 __assert_fail [call site] 00096
5 ZydisDecoderTreeGetChildNode [function] [call site] 00097
6 __assert_fail [call site] 00098
6 __assert_fail [call site] 00099
6 __assert_fail [call site] 00100
6 __assert_fail [call site] 00101
6 __assert_fail [call site] 00102
6 __assert_fail [call site] 00103
6 __assert_fail [call site] 00104
6 __assert_fail [call site] 00105
6 __assert_fail [call site] 00106
6 __assert_fail [call site] 00107
6 __assert_fail [call site] 00108
6 __assert_fail [call site] 00109
6 __assert_fail [call site] 00110
6 __assert_fail [call site] 00111
6 __assert_fail [call site] 00112
6 __assert_fail [call site] 00113
6 __assert_fail [call site] 00114
6 __assert_fail [call site] 00115
6 __assert_fail [call site] 00116
6 __assert_fail [call site] 00117
6 __assert_fail [call site] 00118
6 __assert_fail [call site] 00119
6 __assert_fail [call site] 00120
6 __assert_fail [call site] 00121
6 __assert_fail [call site] 00122
6 __assert_fail [call site] 00123
6 __assert_fail [call site] 00124
6 __assert_fail [call site] 00125
6 __assert_fail [call site] 00126
6 __assert_fail [call site] 00127
6 __assert_fail [call site] 00128
6 __assert_fail [call site] 00129
6 __assert_fail [call site] 00130
6 __assert_fail [call site] 00131
6 __assert_fail [call site] 00132
6 __assert_fail [call site] 00133
5 ZydisNodeHandlerOperandSize [function] [call site] 00134
6 __assert_fail [call site] 00135
6 __assert_fail [call site] 00136
5 ZydisNodeHandlerAddressSize [function] [call site] 00137
6 __assert_fail [call site] 00138
6 __assert_fail [call site] 00139
5 ZydisNodeHandlerVectorLength [function] [call site] 00140
6 __assert_fail [call site] 00141
6 __assert_fail [call site] 00142
6 __assert_fail [call site] 00143
6 __assert_fail [call site] 00144
6 __assert_fail [call site] 00145
6 __assert_fail [call site] 00146
6 __assert_fail [call site] 00147
5 ZydisNodeHandlerRexW [function] [call site] 00148
6 __assert_fail [call site] 00149
6 __assert_fail [call site] 00150
6 __assert_fail [call site] 00151
6 __assert_fail [call site] 00152
6 __assert_fail [call site] 00153
6 __assert_fail [call site] 00154
6 __assert_fail [call site] 00155
6 __assert_fail [call site] 00156
5 ZydisNodeHandlerRexB [function] [call site] 00157
6 __assert_fail [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
6 __assert_fail [call site] 00163
6 __assert_fail [call site] 00164
6 __assert_fail [call site] 00165
5 ZydisNodeHandlerEvexU [function] [call site] 00166
6 __assert_fail [call site] 00167
6 __assert_fail [call site] 00168
6 __assert_fail [call site] 00169
5 ZydisNodeHandlerEvexB [function] [call site] 00170
6 __assert_fail [call site] 00171
6 __assert_fail [call site] 00172
6 __assert_fail [call site] 00173
5 ZydisNodeHandlerMvexE [function] [call site] 00174
6 __assert_fail [call site] 00175
6 __assert_fail [call site] 00176
6 __assert_fail [call site] 00177
5 ZydisNodeHandlerEvexND [function] [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
5 ZydisNodeHandlerEvexNF [function] [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
5 ZydisNodeHandlerEvexSCC [function] [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
5 ZydisGetInstructionDefinition [function] [call site] 00193
6 __assert_fail [call site] 00194
5 ZydisSetEffectiveOperandWidth [function] [call site] 00195
6 __assert_fail [call site] 00196
6 __assert_fail [call site] 00197
5 ZydisSetEffectiveAddressWidth [function] [call site] 00198
6 __assert_fail [call site] 00199
6 __assert_fail [call site] 00200
5 ZydisGetInstructionEncodingInfo [function] [call site] 00201
6 __assert_fail [call site] 00202
6 __assert_fail [call site] 00203
5 ZydisDecodeOptionalInstructionParts [function] [call site] 00204
6 __assert_fail [call site] 00205
6 ZydisInputNext [function] [call site] 00206
6 ZydisDecodeModRM [function] [call site] 00207
6 __assert_fail [call site] 00208
6 __assert_fail [call site] 00209
6 __assert_fail [call site] 00210
6 ZydisInputNext [function] [call site] 00211
6 ZydisDecodeSIB [function] [call site] 00212
7 __assert_fail [call site] 00213
7 __assert_fail [call site] 00214
7 __assert_fail [call site] 00215
7 __assert_fail [call site] 00216
6 ZydisReadDisplacement [function] [call site] 00217
7 __assert_fail [call site] 00218
7 ZydisInputNext [function] [call site] 00219
7 ZydisInputNextBytes [function] [call site] 00220
7 ZydisInputNextBytes [function] [call site] 00221
7 ZydisInputNextBytes [function] [call site] 00222
7 __assert_fail [call site] 00223
6 ZydisReadDisplacement [function] [call site] 00224
6 ZydisReadImmediate [function] [call site] 00225
7 __assert_fail [call site] 00226
7 __assert_fail [call site] 00227
7 ZydisInputNext [function] [call site] 00228
7 ZydisInputNextBytes [function] [call site] 00229
7 ZydisInputNextBytes [function] [call site] 00230
7 ZydisInputNextBytes [function] [call site] 00231
7 __assert_fail [call site] 00232
6 __assert_fail [call site] 00233
6 ZydisReadImmediate [function] [call site] 00234
5 ZydisCheckErrorConditions [function] [call site] 00235
6 __assert_fail [call site] 00236
6 __assert_fail [call site] 00237
6 __assert_fail [call site] 00238
6 __assert_fail [call site] 00239
6 ZydisPopulateRegisterIds [function] [call site] 00240
7 __assert_fail [call site] 00241
7 __assert_fail [call site] 00242
6 __assert_fail [call site] 00243
6 __assert_fail [call site] 00244
6 __assert_fail [call site] 00245
6 __assert_fail [call site] 00246
6 __assert_fail [call site] 00247
6 __assert_fail [call site] 00248
6 __assert_fail [call site] 00249
5 ZydisInputNext [function] [call site] 00250
5 ZydisDecoderTreeGetChildNode [function] [call site] 00251
5 ZydisDecoderTreeGetChildNode [function] [call site] 00252
5 ZydisDecoderTreeGetChildNode [function] [call site] 00253
5 __assert_fail [call site] 00254
5 ZydisDecoderTreeGetChildNode [function] [call site] 00255
5 __assert_fail [call site] 00256
5 ZydisGetInstructionDefinition [function] [call site] 00257
5 __assert_fail [call site] 00258
5 ZydisSetAttributes [function] [call site] 00259
6 __assert_fail [call site] 00260
6 __assert_fail [call site] 00261
6 __assert_fail [call site] 00262
6 __assert_fail [call site] 00263
5 ZydisSetAVXInformation [function] [call site] 00264
6 __assert_fail [call site] 00265
6 __assert_fail [call site] 00266
6 __assert_fail [call site] 00267
6 __assert_fail [call site] 00268
6 __assert_fail [call site] 00269
6 __assert_fail [call site] 00270
6 __assert_fail [call site] 00271
6 __assert_fail [call site] 00272
6 __assert_fail [call site] 00273
6 __assert_fail [call site] 00274
6 __assert_fail [call site] 00275
6 __assert_fail [call site] 00276
6 __assert_fail [call site] 00277
6 __assert_fail [call site] 00278
6 __assert_fail [call site] 00279
6 __assert_fail [call site] 00280
6 __assert_fail [call site] 00281
6 __assert_fail [call site] 00282
6 __assert_fail [call site] 00283
6 __assert_fail [call site] 00284
6 __assert_fail [call site] 00285
6 __assert_fail [call site] 00286
6 __assert_fail [call site] 00287
6 __assert_fail [call site] 00288
6 __assert_fail [call site] 00289
6 __assert_fail [call site] 00290
6 __assert_fail [call site] 00291
6 __assert_fail [call site] 00292
6 __assert_fail [call site] 00293
6 __assert_fail [call site] 00294
6 __assert_fail [call site] 00295
6 __assert_fail [call site] 00296
6 __assert_fail [call site] 00297
6 __assert_fail [call site] 00298
6 __assert_fail [call site] 00299
6 __assert_fail [call site] 00300
6 __assert_fail [call site] 00301
6 __assert_fail [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 __assert_fail [call site] 00307
6 __assert_fail [call site] 00308
6 __assert_fail [call site] 00309
6 __assert_fail [call site] 00310
6 __assert_fail [call site] 00311
6 __assert_fail [call site] 00312
6 __assert_fail [call site] 00313
6 __assert_fail [call site] 00314
6 __assert_fail [call site] 00315
6 __assert_fail [call site] 00316
6 __assert_fail [call site] 00317
6 __assert_fail [call site] 00318
6 __assert_fail [call site] 00319
6 __assert_fail [call site] 00320
6 __assert_fail [call site] 00321
6 __assert_fail [call site] 00322
6 __assert_fail [call site] 00323
6 __assert_fail [call site] 00324
5 ZydisGetAccessedFlags [function] [call site] 00325
6 __assert_fail [call site] 00326
5 __assert_fail [call site] 00327
5 ZydisDecoderTreeGetChildNode [function] [call site] 00328
3 ZydisDecoderDecodeOperands [function] [call site] 00329
4 ZydisDecodeOperands [function] [call site] 00330
5 __assert_fail [call site] 00331
5 __assert_fail [call site] 00332
5 __assert_fail [call site] 00333
5 ZydisGetOperandDefinitions [function] [call site] 00334
5 ZydisDecodeOperandImplicitRegister [function] [call site] 00335
6 __assert_fail [call site] 00336
6 __assert_fail [call site] 00337
6 ZydisRegisterEncode [function] [call site] 00338
6 ZydisRegisterEncode [function] [call site] 00339
6 ZydisRegisterEncode [function] [call site] 00340
6 __assert_fail [call site] 00341
5 ZydisDecodeOperandImplicitMemory [function] [call site] 00342
6 __assert_fail [call site] 00343
6 __assert_fail [call site] 00344
6 ZydisCalcRegisterId [function] [call site] 00345
7 __assert_fail [call site] 00346
6 ZydisRegisterEncode [function] [call site] 00347
6 ZydisCalcRegisterId [function] [call site] 00348
6 ZydisRegisterEncode [function] [call site] 00349
6 ZydisRegisterEncode [function] [call site] 00350
6 ZydisRegisterEncode [function] [call site] 00351
6 ZydisRegisterEncode [function] [call site] 00352
6 ZydisRegisterEncode [function] [call site] 00353
6 ZydisRegisterEncode [function] [call site] 00354
6 ZydisRegisterEncode [function] [call site] 00355
6 ZydisRegisterEncode [function] [call site] 00356
6 __assert_fail [call site] 00357
6 ZydisRegisterEncode [function] [call site] 00358
6 __assert_fail [call site] 00359
5 __assert_fail [call site] 00360
5 __assert_fail [call site] 00361
5 __assert_fail [call site] 00362
5 __assert_fail [call site] 00363
5 __assert_fail [call site] 00364
5 ZydisCalcRegisterId [function] [call site] 00365
5 ZydisDecodeOperandRegister [function] [call site] 00366
6 __assert_fail [call site] 00367
6 ZydisRegisterEncode [function] [call site] 00368
6 __assert_fail [call site] 00369
5 ZydisDecodeOperandMemory [function] [call site] 00370
6 __assert_fail [call site] 00371
6 __assert_fail [call site] 00372
6 __assert_fail [call site] 00373
6 __assert_fail [call site] 00374
6 __assert_fail [call site] 00375
6 ZydisCalcRegisterId [function] [call site] 00376
6 __assert_fail [call site] 00377
6 __assert_fail [call site] 00378
6 ZydisCalcRegisterId [function] [call site] 00379
6 ZydisRegisterEncode [function] [call site] 00380
6 ZydisCalcRegisterId [function] [call site] 00381
6 __assert_fail [call site] 00382
6 __assert_fail [call site] 00383
6 ZydisCalcRegisterId [function] [call site] 00384
6 ZydisRegisterEncode [function] [call site] 00385
6 __assert_fail [call site] 00386
6 __assert_fail [call site] 00387
5 ZydisDecodeOperandMemory [function] [call site] 00388
5 ZydisDecodeOperandMemory [function] [call site] 00389
5 ZydisDecodeOperandMemory [function] [call site] 00390
5 __assert_fail [call site] 00391
5 __assert_fail [call site] 00392
5 ZydisDecodeOperandMemory [function] [call site] 00393
5 __assert_fail [call site] 00394
5 ZydisDecodeOperandMemory [function] [call site] 00395
5 __assert_fail [call site] 00396
5 __assert_fail [call site] 00397
5 __assert_fail [call site] 00398
5 __assert_fail [call site] 00399
5 __assert_fail [call site] 00400
5 ZydisSetOperandSizeAndElementInfo [function] [call site] 00401
6 __assert_fail [call site] 00402
6 __assert_fail [call site] 00403
6 ZydisRegisterGetWidth [function] [call site] 00404
6 __assert_fail [call site] 00405
6 __assert_fail [call site] 00406
6 __assert_fail [call site] 00407
6 __assert_fail [call site] 00408
6 __assert_fail [call site] 00409
6 __assert_fail [call site] 00410
6 __assert_fail [call site] 00411
6 __assert_fail [call site] 00412
6 __assert_fail [call site] 00413
6 __assert_fail [call site] 00414
6 __assert_fail [call site] 00415
6 __assert_fail [call site] 00416
6 __assert_fail [call site] 00417
6 __assert_fail [call site] 00418
6 __assert_fail [call site] 00419
6 ZydisGetElementInfo [function] [call site] 00420
7 __assert_fail [call site] 00421
2 ZydisValidateEnumRanges [function] [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
3 fprintf [call site] 00431
3 abort [call site] 00432
3 fprintf [call site] 00433
3 abort [call site] 00434
3 fprintf [call site] 00435
3 abort [call site] 00436
3 fprintf [call site] 00437
3 abort [call site] 00438
3 fprintf [call site] 00439
3 abort [call site] 00440
3 fprintf [call site] 00441
3 abort [call site] 00442
3 fprintf [call site] 00443
3 abort [call site] 00444
3 fprintf [call site] 00445
3 abort [call site] 00446
3 fprintf [call site] 00447
3 abort [call site] 00448
3 fprintf [call site] 00449
3 abort [call site] 00450
3 fprintf [call site] 00451
3 abort [call site] 00452
3 ZydisValidateImmediateSize [function] [call site] 00453
4 fprintf [call site] 00454
4 abort [call site] 00455
3 fprintf [call site] 00456
3 abort [call site] 00457
3 fprintf [call site] 00458
3 abort [call site] 00459
3 fprintf [call site] 00460
3 abort [call site] 00461
3 ZydisValidateImmediateSize [function] [call site] 00462
3 fprintf [call site] 00463
3 abort [call site] 00464
3 fprintf [call site] 00465
3 abort [call site] 00466
3 fprintf [call site] 00467
3 abort [call site] 00468
3 fprintf [call site] 00469
3 abort [call site] 00470
3 fprintf [call site] 00471
3 abort [call site] 00472
3 fprintf [call site] 00473
3 abort [call site] 00474
3 fprintf [call site] 00475
3 abort [call site] 00476
3 fprintf [call site] 00477
3 abort [call site] 00478
3 fprintf [call site] 00479
3 abort [call site] 00480
3 fprintf [call site] 00481
3 abort [call site] 00482
3 fprintf [call site] 00483
3 abort [call site] 00484
3 fprintf [call site] 00485
3 abort [call site] 00486
3 fprintf [call site] 00487
3 abort [call site] 00488
3 fprintf [call site] 00489
3 abort [call site] 00490
3 fprintf [call site] 00491
3 abort [call site] 00492
3 fprintf [call site] 00493
3 abort [call site] 00494
3 fprintf [call site] 00495
3 abort [call site] 00496
3 fprintf [call site] 00497
3 abort [call site] 00498
2 ZydisFormatterFormatInstruction [function] [call site] 00499
3 ZydisFormatterBufferInit [function] [call site] 00500
4 __assert_fail [call site] 00501
2 ZydisFormatterTokenizeInstruction [function] [call site] 00502
3 ZydisFormatterBufferInitTokenized [function] [call site] 00503
4 __assert_fail [call site] 00504
2 ZydisFormatterTokenGetValue [function] [call site] 00505
2 ZydisFormatterTokenNext [function] [call site] 00506
2 ZydisFormatterFormatOperand [function] [call site] 00507
3 ZydisFormatterBufferInit [function] [call site] 00508
2 ZydisFormatterTokenizeOperand [function] [call site] 00509
3 ZydisFormatterBufferInitTokenized [function] [call site] 00510
2 ZydisCalcAbsoluteAddress [function] [call site] 00511
2 ZydisMnemonicGetString [function] [call site] 00512
2 ZydisMnemonicGetStringWrapped [function] [call site] 00513
2 ZydisGetInstructionSegments [function] [call site] 00514
2 ZydisIsFeatureEnabled [function] [call site] 00515
2 ZydisRegisterEncode [function] [call site] 00516
2 ZydisRegisterGetId [function] [call site] 00517
2 ZydisRegisterGetClass [function] [call site] 00518
2 ZydisRegisterGetWidth [function] [call site] 00519
2 ZydisRegisterGetLargestEnclosing [function] [call site] 00520
3 __assert_fail [call site] 00521
3 __assert_fail [call site] 00522
2 ZydisRegisterGetString [function] [call site] 00523
2 ZydisRegisterGetStringWrapped [function] [call site] 00524
2 ZydisRegisterClassGetWidth [function] [call site] 00525
1 ZydisLibFuzzerRead [function] [call site] 00526