Fuzz introspector: TestFuzzDrdynvc
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
35 172 WLog_ConsoleAppender_New call site: 00172 WLog_FileAppender_New
16 95 NtCurrentTeb call site: 00095 GetEnvironmentVariableA
14 217 WLog_ParseFilters call site: 00217 WLog_AddStringLogFilters_int
7 146 winpr_backtrace_free call site: 00146 log_recursion
7 160 WLog_InitializeRoot call site: 00160 GetEnvironmentVariableA
6 11 WLog_IsLevelActive call site: 00011 WLog_GetFilterLogLevel
5 40 unwind_backtrace_callback call site: 00040 WLog_Print_dbg_tag
5 67 InterlockedDecrement call site: 00067 UnWaitCriticalSection
4 55 GetCurrentThreadId call site: 00055 WaitForCriticalSection
4 131 WLog_AddChild call site: 00131 WLog_Free
4 233 winpr_atexit call site: 00233 WLog_Print_dbg_tag
4 244 Stream_GetRemainingLength call site: 00244 winpr_log_backtrace

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 Stream_New [function] [call site] 00001
2 calloc [call site] 00002
1 Stream_GetRemainingLength [function] [call site] 00003
2 winpr_int_assert [function] [call site] 00004
3 WLog_Get [function] [call site] 00005
4 WLog_GetRoot [function] [call site] 00006
5 winpr_InitOnceExecuteOnce [function] [call site] 00007
6 InterlockedCompareExchangePointer [function] [call site] 00008
7 winpr_int_assert [function] [call site] 00009
8 WLog_IsLevelActive [function] [call site] 00010
9 WLog_GetLogLevel [function] [call site] 00011
10 WLog_GetFilterLogLevel [function] [call site] 00012
11 _stricmp [function] [call site] 00013
12 strcasecmp [call site] 00014
11 __assert_fail [call site] 00015
11 _stricmp [function] [call site] 00016
11 __assert_fail [call site] 00017
10 WLog_GetLogLevel [function] [call site] 00018
8 WLog_PrintTextMessage [function] [call site] 00019
9 WLog_PrintTextMessageVA [function] [call site] 00020
10 WLog_PrintTextMessageInternal [function] [call site] 00021
11 __assert_fail [call site] 00022
11 vsnprintf [call site] 00023
11 WLog_Write [function] [call site] 00024
12 WLog_GetLogAppender [function] [call site] 00025
13 WLog_GetLogAppender [function] [call site] 00026
12 WLog_OpenAppender [function] [call site] 00027
13 WLog_GetLogAppender [function] [call site] 00028
12 EnterCriticalSection [function] [call site] 00029
13 winpr_int_assert [function] [call site] 00030
14 winpr_log_backtrace_ex [function] [call site] 00031
15 winpr_backtrace [function] [call site] 00032
16 winpr_unwind_backtrace [function] [call site] 00033
17 calloc [call site] 00034
17 calloc [call site] 00035
17 _Unwind_Backtrace [call site] 00036
17 unwind_backtrace_callback [function] [call site] 00037
18 __assert_fail [call site] 00038
18 _Unwind_GetIP [call site] 00039
18 _Unwind_GetLanguageSpecificData [call site] 00040
17 unwind_reason_str_buffer [function] [call site] 00041
18 unwind_reason_str [function] [call site] 00042
18 snprintf [call site] 00043
17 WLog_Print_dbg_tag [function] [call site] 00044
18 WLog_Get [function] [call site] 00045
19 WLog_Get_int [function] [call site] 00046
20 WLog_FindChild [function] [call site] 00047
21 WLog_Lock [function] [call site] 00048
22 winpr_int_assert [function] [call site] 00049
23 abort [call site] 00050
22 EnterCriticalSection [function] [call site] 00051
23 InterlockedIncrement [function] [call site] 00052
24 winpr_int_assert [function] [call site] 00053
23 GetCurrentThreadId [function] [call site] 00054
24 syscall [call site] 00055
23 WaitForCriticalSection [function] [call site] 00056
24 winpr_int_assert [function] [call site] 00057
24 winpr_int_assert [function] [call site] 00058
24 sem_wait [call site] 00059
23 GetCurrentThreadId [function] [call site] 00060
21 strcmp [call site] 00061
21 WLog_Unlock [function] [call site] 00062
22 winpr_int_assert [function] [call site] 00063
22 LeaveCriticalSection [function] [call site] 00064
23 winpr_int_assert [function] [call site] 00065
23 InterlockedDecrement [function] [call site] 00066
24 winpr_int_assert [function] [call site] 00067
23 UnWaitCriticalSection [function] [call site] 00068
24 winpr_int_assert [function] [call site] 00069
24 winpr_int_assert [function] [call site] 00070
24 sem_post [call site] 00071
23 InterlockedDecrement [function] [call site] 00072
20 WLog_New [function] [call site] 00073
21 calloc [call site] 00074
21 _strdup [function] [call site] 00075
22 strdup [call site] 00076
22 WLog_Print_dbg_tag [function] [call site] 00077
23 WLog_IsLevelActive [function] [call site] 00078
23 WLog_PrintTextMessageVA [function] [call site] 00079
21 WLog_ParseName [function] [call site] 00080
22 strchr [call site] 00081
22 _strdup [function] [call site] 00082
22 calloc [call site] 00083
22 strchr [call site] 00084
21 GetEnvironmentVariableA [function] [call site] 00085
22 getenv [call site] 00086
22 SetLastError [function] [call site] 00087
23 NtCurrentTeb [function] [call site] 00088
24 pthread_once [call site] 00089
24 sTebInitOnce [function] [call site] 00090
25 pthread_key_create [call site] 00091
25 sTebDestruct [function] [call site] 00092
24 pthread_getspecific [call site] 00093
24 calloc [call site] 00094
24 pthread_setspecific [call site] 00095
22 strlen [call site] 00096
21 GetEnvironmentVariableA [function] [call site] 00097
21 fprintf [call site] 00098
21 WLog_ParseLogLevel [function] [call site] 00099
22 _stricmp [function] [call site] 00100
22 _stricmp [function] [call site] 00101
22 _stricmp [function] [call site] 00102
22 _stricmp [function] [call site] 00103
22 _stricmp [function] [call site] 00104
22 _stricmp [function] [call site] 00105
22 _stricmp [function] [call site] 00106
21 WLog_SetLogLevel [function] [call site] 00107
22 WLog_UpdateInheritLevel [function] [call site] 00108
23 WLog_UpdateInheritLevel [function] [call site] 00109
22 WLog_reset_log_filters [function] [call site] 00110
23 WLog_reset_log_filters [function] [call site] 00111
21 WLog_GetFilterLogLevel [function] [call site] 00112
21 WLog_SetLogLevel [function] [call site] 00113
21 InitializeCriticalSectionAndSpinCount [function] [call site] 00114
22 InitializeCriticalSectionEx [function] [call site] 00115
23 winpr_int_assert [function] [call site] 00116
23 WLog_Print_dbg_tag [function] [call site] 00117
23 sem_init [call site] 00118
23 SetCriticalSectionSpinCount [function] [call site] 00119
24 winpr_int_assert [function] [call site] 00120
21 WLog_Free [function] [call site] 00121
22 WLog_Appender_Free [function] [call site] 00122
23 WLog_Layout_Free [function] [call site] 00123
23 DeleteCriticalSection [function] [call site] 00124
24 winpr_int_assert [function] [call site] 00125
24 sem_destroy [call site] 00126
22 DeleteCriticalSection [function] [call site] 00127
20 WLog_AddChild [function] [call site] 00128
21 WLog_Lock [function] [call site] 00129
21 realloc [call site] 00130
21 WLog_Unlock [function] [call site] 00131
20 WLog_Free [function] [call site] 00132
17 winpr_unwind_backtrace_free [function] [call site] 00133
15 WLog_IsLevelActive [function] [call site] 00134
15 WLog_PrintTextMessage [function] [call site] 00135
15 winpr_backtrace_symbols [function] [call site] 00136
16 WLog_Print_dbg_tag [function] [call site] 00137
16 winpr_unwind_backtrace_symbols [function] [call site] 00138
17 calloc [call site] 00139
17 dladdr [call site] 00140
17 snprintf [call site] 00141
17 snprintf [call site] 00142
15 WLog_IsLevelActive [function] [call site] 00143
15 WLog_PrintTextMessage [function] [call site] 00144
15 winpr_backtrace_free [function] [call site] 00145
16 winpr_unwind_backtrace_free [function] [call site] 00146
12 log_recursion [function] [call site] 00147
13 winpr_backtrace [function] [call site] 00148
13 winpr_backtrace_symbols [function] [call site] 00149
13 fprintf [call site] 00150
13 fprintf [call site] 00151
13 fprintf [call site] 00152
13 winpr_backtrace_free [function] [call site] 00153
12 LeaveCriticalSection [function] [call site] 00154
6 WLog_Print_dbg_tag [function] [call site] 00155
6 Sleep [function] [call site] 00156
7 usleep [call site] 00157
5 WLog_InitializeRoot [function] [call site] 00158
6 WLog_New [function] [call site] 00159
6 GetEnvironmentVariableA [function] [call site] 00160
6 GetEnvironmentVariableA [function] [call site] 00161
6 fprintf [call site] 00162
6 _stricmp [function] [call site] 00163
6 _stricmp [function] [call site] 00164
6 _stricmp [function] [call site] 00165
6 _stricmp [function] [call site] 00166
6 _stricmp [function] [call site] 00167
6 WLog_SetLogAppenderType [function] [call site] 00168
7 WLog_Appender_Free [function] [call site] 00169
7 WLog_Appender_New [function] [call site] 00170
8 WLog_ConsoleAppender_New [function] [call site] 00171
9 calloc [call site] 00172
8 WLog_FileAppender_New [function] [call site] 00173
9 calloc [call site] 00174
9 GetEnvironmentVariableA [function] [call site] 00175
9 GetEnvironmentVariableA [function] [call site] 00176
9 WLog_FileAppender_SetOutputFilePath [function] [call site] 00177
10 _strdup [function] [call site] 00178
9 GetEnvironmentVariableA [function] [call site] 00179
9 GetEnvironmentVariableA [function] [call site] 00180
9 WLog_FileAppender_SetOutputFileName [function] [call site] 00181
10 winpr_int_assert [function] [call site] 00182
10 winpr_int_assert [function] [call site] 00183
10 _strdup [function] [call site] 00184
8 WLog_BinaryAppender_New [function] [call site] 00185
9 calloc [call site] 00186
8 WLog_CallbackAppender_New [function] [call site] 00187
9 calloc [call site] 00188
8 WLog_SyslogAppender_New [function] [call site] 00189
9 calloc [call site] 00190
8 WLog_UdpAppender_New [function] [call site] 00191
9 calloc [call site] 00192
9 _socket [function] [call site] 00193
10 socket [call site] 00194
9 GetEnvironmentVariableA [function] [call site] 00195
9 GetEnvironmentVariableA [function] [call site] 00196
9 WLog_UdpAppender_Open [function] [call site] 00197
10 strchr [call site] 00198
10 winpr_int_assert [function] [call site] 00199
10 getaddrinfo [call site] 00200
10 freeaddrinfo [call site] 00201
10 freeaddrinfo [call site] 00202
9 _strdup [function] [call site] 00203
9 closesocket [function] [call site] 00204
10 close [call site] 00205
8 fprintf [call site] 00206
8 WLog_ConsoleAppender_New [function] [call site] 00207
8 WLog_Layout_New [function] [call site] 00208
9 calloc [call site] 00209
9 GetEnvironmentVariableA [function] [call site] 00210
9 GetEnvironmentVariableA [function] [call site] 00211
9 _strdup [function] [call site] 00212
8 WLog_Appender_Free [function] [call site] 00213
8 InitializeCriticalSectionAndSpinCount [function] [call site] 00214
8 WLog_Appender_Free [function] [call site] 00215
6 WLog_ParseFilters [function] [call site] 00216
7 GetEnvironmentVariableA [function] [call site] 00217
7 GetEnvironmentVariableA [function] [call site] 00218
7 WLog_AddStringLogFilters_int [function] [call site] 00219
8 strchr [call site] 00220
8 realloc [call site] 00221
8 _strdup [function] [call site] 00222
8 strchr [call site] 00223
8 WLog_ParseFilter [function] [call site] 00224
9 strchr [call site] 00225
9 _strdup [function] [call site] 00226
9 calloc [call site] 00227
9 strrchr [call site] 00228
9 WLog_ParseLogLevel [function] [call site] 00229
9 strchr [call site] 00230
8 WLog_reset_log_filters [function] [call site] 00231
6 winpr_atexit [function] [call site] 00232
7 atexit [call site] 00233
7 __errno_location [call site] 00234
7 winpr_strerror [function] [call site] 00235
8 __xpg_strerror_r [call site] 00236
7 WLog_Print_dbg_tag [function] [call site] 00237
6 WLog_Uninit_ [function] [call site] 00238
7 WLog_Free [function] [call site] 00239
7 WLog_Free [function] [call site] 00240
6 WLog_Uninit_ [function] [call site] 00241
2 winpr_int_assert [function] [call site] 00242
2 winpr_int_assert [function] [call site] 00243
2 winpr_int_assert [function] [call site] 00244
2 WLog_Print_dbg_tag [function] [call site] 00245
2 winpr_log_backtrace [function] [call site] 00246
3 WLog_Get [function] [call site] 00247
3 winpr_log_backtrace_ex [function] [call site] 00248
1 fuzz_process_one_pdu [function] [call site] 00249
2 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00250
3 winpr_int_assert [function] [call site] 00251
3 Stream_GetRemainingLength [function] [call site] 00252
3 Stream_CheckAndLogRequiredLengthExVa [function] [call site] 00253
4 winpr_int_assert [function] [call site] 00254
4 Stream_GetRemainingLength [function] [call site] 00255
4 WLog_Get [function] [call site] 00256
4 Stream_CheckAndLogRequiredLengthWLogExVa [function] [call site] 00257
5 winpr_int_assert [function] [call site] 00258
5 Stream_GetRemainingLength [function] [call site] 00259
5 vsnprintf [call site] 00260
5 WLog_IsLevelActive [function] [call site] 00261
5 WLog_PrintTextMessage [function] [call site] 00262
5 winpr_log_backtrace_ex [function] [call site] 00263
2 Stream_Get_UINT8 [function] [call site] 00264
3 stream_read_u8 [function] [call site] 00265
4 winpr_int_assert [function] [call site] 00266
4 Stream_GetRemainingLength [function] [call site] 00267
4 winpr_int_assert [function] [call site] 00268
4 winpr_Data_Get_UINT8 [function] [call site] 00269
5 winpr_int_assert [function] [call site] 00270
4 Stream_Seek [function] [call site] 00271
5 winpr_int_assert [function] [call site] 00272
5 Stream_GetRemainingCapacity [function] [call site] 00273
6 winpr_int_assert [function] [call site] 00274
6 winpr_int_assert [function] [call site] 00275
6 winpr_int_assert [function] [call site] 00276
6 WLog_Print_dbg_tag [function] [call site] 00277
6 winpr_log_backtrace [function] [call site] 00278
5 winpr_int_assert [function] [call site] 00279
2 fuzz_var_uint_bytes [function] [call site] 00280
2 fuzz_var_uint_bytes [function] [call site] 00281
2 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00282
2 fuzz_read_variable_uint [function] [call site] 00283
3 Stream_Get_UINT8 [function] [call site] 00284
3 Stream_Get_UINT16 [function] [call site] 00285
4 stream_read_u16_le [function] [call site] 00286
5 winpr_int_assert [function] [call site] 00287
5 Stream_GetRemainingLength [function] [call site] 00288
5 winpr_int_assert [function] [call site] 00289
5 winpr_Data_Get_UINT16 [function] [call site] 00290
5 Stream_Seek [function] [call site] 00291
3 Stream_Get_UINT32 [function] [call site] 00292
4 stream_read_u32_le [function] [call site] 00293
5 winpr_int_assert [function] [call site] 00294
5 Stream_GetRemainingLength [function] [call site] 00295
5 winpr_Data_Get_UINT32 [function] [call site] 00296
6 winpr_int_assert [function] [call site] 00297
5 Stream_Seek [function] [call site] 00298
2 fuzz_read_variable_uint [function] [call site] 00299
2 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00300
2 fuzz_read_variable_uint [function] [call site] 00301
2 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00302
2 Stream_Seek [function] [call site] 00303
2 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00304
2 Stream_Get_UINT16 [function] [call site] 00305
2 Stream_GetRemainingLength [function] [call site] 00306
2 Stream_Seek [function] [call site] 00307
1 Stream_Free [function] [call site] 00308
2 Stream_EnsureValidity [function] [call site] 00309
3 WLog_Print_dbg_tag [function] [call site] 00310
3 winpr_log_backtrace [function] [call site] 00311
3 abort [call site] 00312
3 WLog_Print_dbg_tag [function] [call site] 00313
3 winpr_log_backtrace [function] [call site] 00314
3 abort [call site] 00315
3 WLog_Print_dbg_tag [function] [call site] 00316
3 winpr_log_backtrace [function] [call site] 00317
3 abort [call site] 00318
3 WLog_Print_dbg_tag [function] [call site] 00319
3 winpr_log_backtrace [function] [call site] 00320
3 abort [call site] 00321