Fuzz introspector: 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
25 125 m3Error call site: 00125 Compile_Operator
23 178 GetPC call site: 00178 EmitSlotNumOfStackTopAndPop
22 509 GetFunctionArgType call site: 00509 CompileBlockStatements
15 162 ReleaseCodePageNoTrack call site: 00162 PreserveRegisterIfOccupied
11 65 LinkImports call site: 00065 Module_HasExport
9 77 LinkImports call site: 00077 Module_HasExport
8 87 LinkImports call site: 00087 Module_HasExport
8 500 v_validate_body call site: 00500 AcquireCompilationCodePage
7 117 EvaluateExpression call site: 00117 CompileBlockStatements
6 153 EnsureCodePageNumLines call site: 00153 AcquireCodePageWithCapacity
4 241 PrepareFoundFunction call site: 00241 CompileFunction
4 460 v_validate_body call site: 00460 v_pop_expect

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 m3_NewEnvironment [function] [call site] 00001
2 m3_Malloc_Impl [function] [call site] 00002
3 calloc [call site] 00003
2 AllocFuncType [function] [call site] 00004
3 m3_Malloc_Impl [function] [call site] 00005
2 Environment_AddFuncType [function] [call site] 00006
3 AreFuncTypesEqual [function] [call site] 00007
4 memcmp [call site] 00008
3 m3_Free_Impl [function] [call site] 00009
3 m3_Free_Impl [function] [call site] 00010
2 m3_FreeEnvironment [function] [call site] 00011
3 Environment_Release [function] [call site] 00012
4 m3_Free_Impl [function] [call site] 00013
4 FreeCodePages [function] [call site] 00014
5 m3_Free_Impl [function] [call site] 00015
3 m3_Free_Impl [function] [call site] 00016
1 m3_NewRuntime [function] [call site] 00017
2 m3_Malloc_Impl [function] [call site] 00018
2 m3_ResetErrorInfo [function] [call site] 00019
2 m3_Malloc_Impl [function] [call site] 00020
2 m3_Free_Impl [function] [call site] 00021
1 m3_ParseModule [function] [call site] 00022
2 m3_Malloc_Impl [function] [call site] 00023
2 ReadLEB_u7 [function] [call site] 00026
3 ReadLebUnsigned [function] [call site] 00027
2 ReadLEB_u32 [function] [call site] 00028
3 ReadLebUnsigned [function] [call site] 00029
2 ParseModuleSection [function] [call site] 00030
2 m3_FreeModule [function] [call site] 00031
3 Module_FreeFunctions [function] [call site] 00032
4 Function_Release [function] [call site] 00033
5 m3_Free_Impl [function] [call site] 00034
5 FreeImportInfo [function] [call site] 00035
6 m3_Free_Impl [function] [call site] 00036
6 m3_Free_Impl [function] [call site] 00037
5 m3_Free_Impl [function] [call site] 00038
5 m3_Free_Impl [function] [call site] 00039
3 m3_Free_Impl [function] [call site] 00040
3 m3_Free_Impl [function] [call site] 00041
3 m3_Free_Impl [function] [call site] 00042
3 m3_Free_Impl [function] [call site] 00043
3 m3_Free_Impl [function] [call site] 00044
3 m3_Free_Impl [function] [call site] 00045
3 FreeImportInfo [function] [call site] 00046
3 m3_Free_Impl [function] [call site] 00047
3 m3_Free_Impl [function] [call site] 00048
3 m3_Free_Impl [function] [call site] 00049
3 m3_Free_Impl [function] [call site] 00050
3 m3_Free_Impl [function] [call site] 00051
3 m3_Free_Impl [function] [call site] 00052
3 FreeImportInfo [function] [call site] 00053
3 m3_Free_Impl [function] [call site] 00054
3 FreeImportInfo [function] [call site] 00055
3 m3_Free_Impl [function] [call site] 00056
3 m3_Free_Impl [function] [call site] 00057
3 m3_Free_Impl [function] [call site] 00058
3 m3_Free_Impl [function] [call site] 00059
3 m3_Free_Impl [function] [call site] 00060
3 FreeImportInfo [function] [call site] 00061
3 m3_Free_Impl [function] [call site] 00062
1 m3_LoadModule [function] [call site] 00063
2 LinkImports [function] [call site] 00064
3 m3_FindModule [function] [call site] 00065
4 strcmp [call site] 00066
3 Module_FindExportedFunction [function] [call site] 00067
4 strcmp [call site] 00068
4 Function_Implementation [function] [call site] 00069
3 Module_HasExport [function] [call site] 00070
4 strcmp [call site] 00071
4 strcmp [call site] 00072
4 strcmp [call site] 00073
4 strcmp [call site] 00074
4 strcmp [call site] 00075
3 Function_Implementation [function] [call site] 00076
3 m3_FindModule [function] [call site] 00077
3 Module_FindExportedMemory [function] [call site] 00078
4 strcmp [call site] 00079
3 Module_HasExport [function] [call site] 00080
3 Memory_PageSize [function] [call site] 00081
3 LimitsSatisfy [function] [call site] 00082
3 m3_Free_Impl [function] [call site] 00083
3 m3_Free_Impl [function] [call site] 00084
3 FreeImportInfo [function] [call site] 00085
3 m3_Free_Impl [function] [call site] 00086
3 m3_FindModule [function] [call site] 00087
3 Module_FindExportedTable [function] [call site] 00088
4 strcmp [call site] 00089
3 Module_HasExport [function] [call site] 00090
3 LimitsSatisfy [function] [call site] 00091
3 m3_Free_Impl [function] [call site] 00092
3 m3_Free_Impl [function] [call site] 00093
3 FreeImportInfo [function] [call site] 00094
3 m3_Free_Impl [function] [call site] 00095
3 m3_FindModule [function] [call site] 00096
3 Module_FindExportedGlobal [function] [call site] 00097
4 strcmp [call site] 00098
3 Module_HasExport [function] [call site] 00099
2 InitMemory [function] [call site] 00100
3 ResizeMemory [function] [call site] 00101
4 m3_Realloc_Impl [function] [call site] 00102
5 realloc [call site] 00103
3 Memory_PageSize [function] [call site] 00104
3 ResizeMemory [function] [call site] 00105
2 InitGlobals [function] [call site] 00106
3 EvaluateExpression [function] [call site] 00107
4 AcquireCodePage [function] [call site] 00108
5 AcquireCodePageWithCapacity [function] [call site] 00109
6 RemoveCodePageOfCapacity [function] [call site] 00110
7 NumFreeLines [function] [call site] 00111
6 Environment_AcquireCodePage [function] [call site] 00112
7 RemoveCodePageOfCapacity [function] [call site] 00113
6 NewCodePage [function] [call site] 00114
7 m3_Malloc_Impl [function] [call site] 00115
4 GetPagePC [function] [call site] 00116
4 CompileExpression [function] [call site] 00117
5 GetFuncTypeNumResults [function] [call site] 00118
5 CompileBlockStatements [function] [call site] 00119
6 Read_opcode [function] [call site] 00120
6 GetOpInfo [function] [call site] 00121
7 IsCoreOpcode [function] [call site] 00122
7 IsImplementedOp [function] [call site] 00123
6 m3Error [function] [call site] 00124
7 vsnprintf [call site] 00125
6 Compile_Operator [function] [call site] 00126
7 GetOpInfo [function] [call site] 00127
7 IsStackPolymorphic [function] [call site] 00128
7 GetStackTopType [function] [call site] 00129
8 GetStackTypeFromTop [function] [call site] 00130
7 GetStackTypeFromTop [function] [call site] 00131
7 GetStackTopType [function] [call site] 00132
7 IsIntType [function] [call site] 00134
7 PreserveRegisterIfOccupied [function] [call site] 00135
8 IsRegisterAllocated [function] [call site] 00137
8 GetRegisterStackIndex [function] [call site] 00138
8 DeallocateRegister [function] [call site] 00139
8 GetStackTypeFromBottom [function] [call site] 00140
8 AllocateSlots [function] [call site] 00141
9 AllocateSlotsWithinRange [function] [call site] 00142
10 GetTypeNumSlots [function] [call site] 00143
11 Is64BitType [function] [call site] 00144
10 AlignSlotToType [function] [call site] 00145
11 GetTypeNumSlots [function] [call site] 00146
10 MarkSlotsAllocated [function] [call site] 00147
11 MarkSlotAllocated [function] [call site] 00148
12 TouchSlot [function] [call site] 00149
8 EmitOp [function] [call site] 00150
9 InvalidateFold [function] [call site] 00151
9 EnsureCodePageNumLines [function] [call site] 00152
10 NumFreeLines [function] [call site] 00153
10 AcquireCodePageWithCapacity [function] [call site] 00154
10 EmitWord_impl [function] [call site] 00155
10 op_Branch [function] [call site] 00156
10 GetPagePC [function] [call site] 00157
10 EmitWord_impl [function] [call site] 00158
10 ReleaseCodePage [function] [call site] 00159
11 ReleaseCodePageNoTrack [function] [call site] 00160
12 NumFreeLines [function] [call site] 00161
12 PushCodePage [function] [call site] 00162
9 EmitWord_impl [function] [call site] 00163
8 EmitSlotOffset [function] [call site] 00164
9 EmitWord32 [function] [call site] 00165
7 IsStackTopInRegister [function] [call site] 00166
8 GetStackTopIndex [function] [call site] 00167
8 IsStackIndexInRegister [function] [call site] 00168
7 PreserveRegisterIfOccupied [function] [call site] 00169
7 IsStackTopInRegister [function] [call site] 00170
7 IsStackTopMinus1InRegister [function] [call site] 00171
8 GetStackTopIndex [function] [call site] 00172
8 IsStackIndexInRegister [function] [call site] 00173
7 IsStackTopMinus1InRegister [function] [call site] 00174
7 PreserveRegisterIfOccupied [function] [call site] 00175
7 EmitSlotNumOfStackTopAndPop [function] [call site] 00179
8 IsStackTopInSlot [function] [call site] 00180
9 IsStackTopInRegister [function] [call site] 00181
8 GetStackTopSlotNumber [function] [call site] 00182
9 GetStackTopIndex [function] [call site] 00183
8 EmitSlotOffset [function] [call site] 00184
8 Pop [function] [call site] 00185
9 IsRegisterSlotAlias [function] [call site] 00186
9 IsFpRegisterSlotAlias [function] [call site] 00187
9 DeallocateRegister [function] [call site] 00188
9 DeallocateSlot [function] [call site] 00189
10 GetTypeNumSlots [function] [call site] 00190
9 IsStackPolymorphic [function] [call site] 00191
7 EmitSlotNumOfStackTopAndPop [function] [call site] 00192
7 PushRegister [function] [call site] 00193
8 Push [function] [call site] 00195
9 IsRegisterSlotAlias [function] [call site] 00196
9 IsFpRegisterSlotAlias [function] [call site] 00197
9 AllocateRegister [function] [call site] 00198
7 GetStackTopIndex [function] [call site] 00199
5 MarkSlotAllocated [function] [call site] 00201
4 SizeOfType [function] [call site] 00203
4 ReleaseCodePage [function] [call site] 00204
4 Runtime_Release [function] [call site] 00205
5 ForEachModule [function] [call site] 00206
5 _FreeModule [function] [call site] 00207
6 m3_FreeModule [function] [call site] 00208
5 Environment_ReleaseCodePages [function] [call site] 00209
5 Environment_ReleaseCodePages [function] [call site] 00210
5 m3_Free_Impl [function] [call site] 00211
2 InitTableAndElements [function] [call site] 00212
3 m3_Malloc_Impl [function] [call site] 00213
3 EvaluateExpression [function] [call site] 00214
3 m3_Malloc_Impl [function] [call site] 00215
3 ResolveElements [function] [call site] 00216
4 Read_opcode [function] [call site] 00217
4 ReadLEB_u32 [function] [call site] 00218
4 Function_Implementation [function] [call site] 00219
4 ReadLEB_i7 [function] [call site] 00220
5 ReadLebSigned [function] [call site] 00221
4 NormalizeType [function] [call site] 00222
4 ReadLEB_u32 [function] [call site] 00223
4 Read_opcode [function] [call site] 00224
4 ReadLEB_u32 [function] [call site] 00225
4 Function_Implementation [function] [call site] 00226
3 EvaluateExpression [function] [call site] 00227
3 EvaluateExpression [function] [call site] 00228
3 ResolveElements [function] [call site] 00229
2 InitDataSegments [function] [call site] 00230
3 EvaluateExpression [function] [call site] 00231
3 EvaluateExpression [function] [call site] 00232
1 m3_FindFunction [function] [call site] 00233
2 ForEachModule [function] [call site] 00234
2 v_FindFunction [function] [call site] 00235
3 strcmp [call site] 00236
3 Function_Implementation [function] [call site] 00237
3 strcmp [call site] 00238
2 PrepareFoundFunction [function] [call site] 00240
3 CompileFunction [function] [call site] 00241
4 Function_Implementation [function] [call site] 00242
4 CompileFunction [function] [call site] 00243
5 GetFunctionImportModuleName [function] [call site] 00244
5 m3_GetFunctionName [function] [call site] 00245
6 GetFunctionNames [function] [call site] 00246
5 ValidateFunction [function] [call site] 00248
6 ReadLEB_u32 [function] [call site] 00249
6 ReadLEB_u32 [function] [call site] 00250
6 ReadLEB_u32 [function] [call site] 00251
6 ParseValueType [function] [call site] 00252
7 ReadLEB_i7 [function] [call site] 00253
7 NormalizeType [function] [call site] 00254
6 v_push_ctrl [function] [call site] 00255
6 v_validate_body [function] [call site] 00256
7 Read_opcode [function] [call site] 00257
7 v_unreachable [function] [call site] 00258
7 v_read_blocktype [function] [call site] 00259
8 ReadLebSigned [function] [call site] 00260
8 NormalizeType [function] [call site] 00261
7 v_pop_expect [function] [call site] 00264
7 v_push_ctrl [function] [call site] 00265
7 v_read_blocktype [function] [call site] 00267
7 v_pop_expect [function] [call site] 00268
7 ReadLEB_u32 [function] [call site] 00269
7 v_catch_clause [function] [call site] 00270
7 v_push_ctrl [function] [call site] 00277
7 ReadLEB_u32 [function] [call site] 00279
7 v_pop_expect [function] [call site] 00280
7 v_unreachable [function] [call site] 00281
7 v_pop_expect [function] [call site] 00282
7 v_unreachable [function] [call site] 00283
7 v_pop_ctrl [function] [call site] 00284
8 v_pop_expect [function] [call site] 00285
7 v_push_ctrl [function] [call site] 00286
7 v_pop_ctrl [function] [call site] 00288
7 ReadLEB_u32 [function] [call site] 00290
7 v_pop_labels [function] [call site] 00291
8 v_label_n [function] [call site] 00292
8 v_label_t [function] [call site] 00293
8 v_pop_expect [function] [call site] 00294
7 v_unreachable [function] [call site] 00295
7 ReadLEB_u32 [function] [call site] 00296
7 v_pop_expect [function] [call site] 00297
7 v_pop_labels [function] [call site] 00298
7 ReadLEB_u32 [function] [call site] 00303
7 ReadLEB_u32 [function] [call site] 00304
7 v_label_n [function] [call site] 00305
7 v_pop_expect [function] [call site] 00306
7 ReadLEB_u32 [function] [call site] 00307
7 v_label_n [function] [call site] 00308
7 v_label_t [function] [call site] 00309
7 v_pop_labels [function] [call site] 00311
7 v_unreachable [function] [call site] 00312
7 v_pop_expect [function] [call site] 00313
7 v_unreachable [function] [call site] 00314
7 ReadLEB_u32 [function] [call site] 00315
7 v_pop_expect [function] [call site] 00316
7 ReadLEB_u32 [function] [call site] 00318
7 ReadLEB_u32 [function] [call site] 00319
7 v_table_addrtype [function] [call site] 00320
8 Table_AddrType [function] [call site] 00321
7 v_pop_expect [function] [call site] 00322
7 v_pop_expect [function] [call site] 00323
7 ReadLEB_u32 [function] [call site] 00325
7 v_check_tail_results [function] [call site] 00326
7 v_pop_expect [function] [call site] 00327
7 v_unreachable [function] [call site] 00328
7 ReadLEB_u32 [function] [call site] 00329
7 ReadLEB_u32 [function] [call site] 00330
7 v_check_tail_results [function] [call site] 00331
7 v_table_addrtype [function] [call site] 00332
7 v_pop_expect [function] [call site] 00333
7 v_pop_expect [function] [call site] 00334
7 v_unreachable [function] [call site] 00335
7 v_pop_expect [function] [call site] 00337
7 v_pop_expect [function] [call site] 00339
7 IsRefType [function] [call site] 00340
7 ReadLEB_u32 [function] [call site] 00342
7 ParseValueType [function] [call site] 00343
7 v_pop_expect [function] [call site] 00344
7 v_pop_expect [function] [call site] 00345
7 v_pop_expect [function] [call site] 00346
7 ReadLEB_u32 [function] [call site] 00348
7 v_table_addrtype [function] [call site] 00349
7 v_pop_expect [function] [call site] 00350
7 v_pop_expect [function] [call site] 00351
7 v_pop_expect [function] [call site] 00352
7 ReadLEB_i7 [function] [call site] 00354
7 NormalizeType [function] [call site] 00355
7 IsRefType [function] [call site] 00356
7 IsRefType [function] [call site] 00359
7 ReadLEB_u32 [function] [call site] 00361
7 Module_IsFunctionDeclared [function] [call site] 00362
7 ReadLEB_u32 [function] [call site] 00364
7 ReadLEB_u32 [function] [call site] 00366
7 v_pop_expect [function] [call site] 00367
7 ReadLEB_u32 [function] [call site] 00368
7 v_pop_expect [function] [call site] 00369
7 ReadLEB_u32 [function] [call site] 00371
7 ReadLEB_u32 [function] [call site] 00373
7 v_pop_expect [function] [call site] 00374
7 ReadMemoryArg [function] [call site] 00375
8 ReadLEB_u32 [function] [call site] 00376
8 ReadLebUnsigned [function] [call site] 00377
7 v_max_align [function] [call site] 00378
7 v_has_memory_idx [function] [call site] 00379
7 v_offset_in_range [function] [call site] 00380
8 v_memory_addrtype [function] [call site] 00381
9 Memory_AddrType [function] [call site] 00382
7 v_memory_addrtype [function] [call site] 00383
7 v_pop_expect [function] [call site] 00384
7 ReadMemoryArg [function] [call site] 00386
7 v_max_align [function] [call site] 00387
7 v_has_memory_idx [function] [call site] 00388
7 v_offset_in_range [function] [call site] 00389
7 v_pop_expect [function] [call site] 00390
7 v_memory_addrtype [function] [call site] 00391
7 v_pop_expect [function] [call site] 00392
7 ReadLEB_u32 [function] [call site] 00393
7 v_has_memory_idx [function] [call site] 00394
7 v_memory_addrtype [function] [call site] 00395
7 ReadLEB_u32 [function] [call site] 00397
7 v_has_memory_idx [function] [call site] 00398
7 v_memory_addrtype [function] [call site] 00399
7 v_pop_expect [function] [call site] 00400
7 v_memory_addrtype [function] [call site] 00401
7 ReadLEB_i32 [function] [call site] 00403
8 ReadLebSigned [function] [call site] 00404
7 ReadLEB_i64 [function] [call site] 00406
8 ReadLebSigned [function] [call site] 00407
7 ReadLEB_u32 [function] [call site] 00453
7 ReadLEB_u32 [function] [call site] 00458
7 ReadLEB_u32 [function] [call site] 00459
7 v_has_memory_idx [function] [call site] 00460
7 v_pop_expect [function] [call site] 00461
7 v_pop_expect [function] [call site] 00462
7 v_memory_addrtype [function] [call site] 00463
7 v_pop_expect [function] [call site] 00464
7 ReadLEB_u32 [function] [call site] 00465
7 ReadLEB_u32 [function] [call site] 00466
7 ReadLEB_u32 [function] [call site] 00467
7 v_pop_expect [function] [call site] 00468
7 v_pop_expect [function] [call site] 00469
7 v_table_addrtype [function] [call site] 00470
7 v_pop_expect [function] [call site] 00471
7 v_table_addrtype [function] [call site] 00472
7 v_table_addrtype [function] [call site] 00473
7 v_pop_expect [function] [call site] 00474
7 v_pop_expect [function] [call site] 00475
7 v_pop_expect [function] [call site] 00476
7 ReadLEB_u32 [function] [call site] 00477
7 ReadLEB_u32 [function] [call site] 00478
7 v_table_addrtype [function] [call site] 00479
7 v_pop_expect [function] [call site] 00481
7 v_pop_expect [function] [call site] 00482
7 v_pop_expect [function] [call site] 00484
7 v_pop_expect [function] [call site] 00485
7 v_pop_expect [function] [call site] 00486
7 ReadLEB_u32 [function] [call site] 00487
7 ReadLEB_u32 [function] [call site] 00488
7 v_has_memory_idx [function] [call site] 00489
7 v_memory_addrtype [function] [call site] 00490
7 v_memory_addrtype [function] [call site] 00491
7 v_pop_expect [function] [call site] 00492
7 v_pop_expect [function] [call site] 00493
7 v_pop_expect [function] [call site] 00494
7 ReadLEB_u32 [function] [call site] 00495
7 v_has_memory_idx [function] [call site] 00496
7 v_memory_addrtype [function] [call site] 00497
7 v_pop_expect [function] [call site] 00498
7 v_pop_expect [function] [call site] 00499
7 v_pop_expect [function] [call site] 00500
5 ReadLEB_u32 [function] [call site] 00501
5 AcquireCompilationCodePage [function] [call site] 00502
6 AcquireCodePage [function] [call site] 00503
5 GetPagePC [function] [call site] 00504
5 GetFunctionNumReturns [function] [call site] 00505
5 GetFunctionNumArgs [function] [call site] 00506
5 MarkSlotAllocated [function] [call site] 00507
5 GetFunctionArgType [function] [call site] 00508
6 GetFunctionNumArgs [function] [call site] 00509
5 PushAllocatedSlot [function] [call site] 00510
6 _PushAllocatedSlotAndEmit [function] [call site] 00511
7 AllocateSlots [function] [call site] 00512
7 EmitSlotOffset [function] [call site] 00514
5 CompileLocals [function] [call site] 00515
6 ReadLEB_u32 [function] [call site] 00516
6 ReadLEB_u32 [function] [call site] 00517
6 ParseValueType [function] [call site] 00518
6 PushAllocatedSlot [function] [call site] 00519
5 GetMaxUsedSlotPlusOne [function] [call site] 00520
6 IsSlotAllocated [function] [call site] 00521
5 ReserveConstants [function] [call site] 00522
6 GetTypeNumSlots [function] [call site] 00523
6 AlignSlotToType [function] [call site] 00524
5 EmitPointer [function] [call site] 00527
6 GetPagePC [function] [call site] 00528
6 EmitWord_impl [function] [call site] 00529
5 CompileBlockStatements [function] [call site] 00530
5 m3_CopyMem [function] [call site] 00531
6 m3_Malloc_Impl [function] [call site] 00532
5 ReleaseCompilationCodePage [function] [call site] 00533
6 ReleaseCodePage [function] [call site] 00534
1 m3_FreeRuntime [function] [call site] 00535
2 m3_PrintProfilerInfo [function] [call site] 00536
2 Runtime_Release [function] [call site] 00537
2 m3_Free_Impl [function] [call site] 00538
1 m3_FreeEnvironment [function] [call site] 00539