Fuzz introspector: TestFuzzChannelCliprdr
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
35 168 WLog_Appender_New call site: 00168 WLog_FileAppender_New
16 114 NtCurrentTeb call site: 00114 GetEnvironmentVariableA
14 213 WLog_ParseFilters call site: 00213 WLog_AddStringLogFilters_int
7 72 EnterCriticalSection call site: 00072 log_recursion
7 157 WLog_InitializeRoot call site: 00157 GetEnvironmentVariableA
6 12 WLog_IsLevelActive call site: 00012 WLog_GetFilterLogLevel
5 83 InterlockedDecrement call site: 00083 UnWaitCriticalSection
4 41 unwind_backtrace_callback call site: 00041 WLog_Print_dbg_tag
4 67 GetCurrentThreadId call site: 00067 WaitForCriticalSection
4 150 WLog_AddChild call site: 00150 WLog_Free
4 229 winpr_atexit call site: 00229 WLog_Print_dbg_tag
4 248 Stream_GetRemainingLength call site: 00248 winpr_log_backtrace

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 WLog_Get [function] [call site] 00001
2 WLog_GetRoot [function] [call site] 00002
3 winpr_InitOnceExecuteOnce [function] [call site] 00003
4 InterlockedCompareExchangePointer [function] [call site] 00004
5 winpr_int_assert [function] [call site] 00005
6 WLog_Get [function] [call site] 00006
7 WLog_Get_int [function] [call site] 00007
8 WLog_FindChild [function] [call site] 00008
9 WLog_Lock [function] [call site] 00009
10 winpr_int_assert [function] [call site] 00010
11 WLog_IsLevelActive [function] [call site] 00011
12 WLog_GetLogLevel [function] [call site] 00012
13 WLog_GetFilterLogLevel [function] [call site] 00013
14 _stricmp [function] [call site] 00014
15 strcasecmp [call site] 00015
14 __assert_fail [call site] 00016
14 _stricmp [function] [call site] 00017
14 __assert_fail [call site] 00018
13 WLog_GetLogLevel [function] [call site] 00019
11 WLog_PrintTextMessage [function] [call site] 00020
12 WLog_PrintTextMessageVA [function] [call site] 00021
13 WLog_PrintTextMessageInternal [function] [call site] 00022
14 __assert_fail [call site] 00023
14 vsnprintf [call site] 00024
14 WLog_Write [function] [call site] 00025
15 WLog_GetLogAppender [function] [call site] 00026
16 WLog_GetLogAppender [function] [call site] 00027
15 WLog_OpenAppender [function] [call site] 00028
16 WLog_GetLogAppender [function] [call site] 00029
15 EnterCriticalSection [function] [call site] 00030
16 winpr_int_assert [function] [call site] 00031
17 winpr_log_backtrace_ex [function] [call site] 00032
18 winpr_backtrace [function] [call site] 00033
19 winpr_unwind_backtrace [function] [call site] 00034
20 calloc [call site] 00035
20 calloc [call site] 00036
20 _Unwind_Backtrace [call site] 00037
20 unwind_backtrace_callback [function] [call site] 00038
21 __assert_fail [call site] 00039
21 _Unwind_GetIP [call site] 00040
21 _Unwind_GetLanguageSpecificData [call site] 00041
20 unwind_reason_str_buffer [function] [call site] 00042
21 unwind_reason_str [function] [call site] 00043
21 snprintf [call site] 00044
20 WLog_Print_dbg_tag [function] [call site] 00045
21 WLog_Get [function] [call site] 00046
21 WLog_IsLevelActive [function] [call site] 00047
21 WLog_PrintTextMessageVA [function] [call site] 00048
20 winpr_unwind_backtrace_free [function] [call site] 00049
18 WLog_IsLevelActive [function] [call site] 00050
18 WLog_PrintTextMessage [function] [call site] 00051
18 winpr_backtrace_symbols [function] [call site] 00052
19 WLog_Print_dbg_tag [function] [call site] 00053
19 winpr_unwind_backtrace_symbols [function] [call site] 00054
20 calloc [call site] 00055
20 dladdr [call site] 00056
20 snprintf [call site] 00057
20 snprintf [call site] 00058
18 WLog_IsLevelActive [function] [call site] 00059
18 WLog_PrintTextMessage [function] [call site] 00060
18 winpr_backtrace_free [function] [call site] 00061
19 winpr_unwind_backtrace_free [function] [call site] 00062
17 abort [call site] 00063
16 InterlockedIncrement [function] [call site] 00064
17 winpr_int_assert [function] [call site] 00065
16 GetCurrentThreadId [function] [call site] 00066
17 syscall [call site] 00067
16 WaitForCriticalSection [function] [call site] 00068
17 winpr_int_assert [function] [call site] 00069
17 winpr_int_assert [function] [call site] 00070
17 sem_wait [call site] 00071
16 GetCurrentThreadId [function] [call site] 00072
15 log_recursion [function] [call site] 00073
16 winpr_backtrace [function] [call site] 00074
16 winpr_backtrace_symbols [function] [call site] 00075
16 fprintf [call site] 00076
16 fprintf [call site] 00077
16 fprintf [call site] 00078
16 winpr_backtrace_free [function] [call site] 00079
15 LeaveCriticalSection [function] [call site] 00080
16 winpr_int_assert [function] [call site] 00081
16 InterlockedDecrement [function] [call site] 00082
17 winpr_int_assert [function] [call site] 00083
16 UnWaitCriticalSection [function] [call site] 00084
17 winpr_int_assert [function] [call site] 00085
17 winpr_int_assert [function] [call site] 00086
17 sem_post [call site] 00087
16 InterlockedDecrement [function] [call site] 00088
10 EnterCriticalSection [function] [call site] 00089
9 strcmp [call site] 00090
9 WLog_Unlock [function] [call site] 00091
10 winpr_int_assert [function] [call site] 00092
10 LeaveCriticalSection [function] [call site] 00093
8 WLog_New [function] [call site] 00094
9 calloc [call site] 00095
9 _strdup [function] [call site] 00096
10 strdup [call site] 00097
10 WLog_Print_dbg_tag [function] [call site] 00098
9 WLog_ParseName [function] [call site] 00099
10 strchr [call site] 00100
10 _strdup [function] [call site] 00101
10 calloc [call site] 00102
10 strchr [call site] 00103
9 GetEnvironmentVariableA [function] [call site] 00104
10 getenv [call site] 00105
10 SetLastError [function] [call site] 00106
11 NtCurrentTeb [function] [call site] 00107
12 pthread_once [call site] 00108
12 sTebInitOnce [function] [call site] 00109
13 pthread_key_create [call site] 00110
13 sTebDestruct [function] [call site] 00111
12 pthread_getspecific [call site] 00112
12 calloc [call site] 00113
12 pthread_setspecific [call site] 00114
10 strlen [call site] 00115
9 GetEnvironmentVariableA [function] [call site] 00116
9 fprintf [call site] 00117
9 WLog_ParseLogLevel [function] [call site] 00118
10 _stricmp [function] [call site] 00119
10 _stricmp [function] [call site] 00120
10 _stricmp [function] [call site] 00121
10 _stricmp [function] [call site] 00122
10 _stricmp [function] [call site] 00123
10 _stricmp [function] [call site] 00124
10 _stricmp [function] [call site] 00125
9 WLog_SetLogLevel [function] [call site] 00126
10 WLog_UpdateInheritLevel [function] [call site] 00127
11 WLog_UpdateInheritLevel [function] [call site] 00128
10 WLog_reset_log_filters [function] [call site] 00129
11 WLog_reset_log_filters [function] [call site] 00130
9 WLog_GetFilterLogLevel [function] [call site] 00131
9 WLog_SetLogLevel [function] [call site] 00132
9 InitializeCriticalSectionAndSpinCount [function] [call site] 00133
10 InitializeCriticalSectionEx [function] [call site] 00134
11 winpr_int_assert [function] [call site] 00135
11 WLog_Print_dbg_tag [function] [call site] 00136
11 sem_init [call site] 00137
11 SetCriticalSectionSpinCount [function] [call site] 00138
12 winpr_int_assert [function] [call site] 00139
9 WLog_Free [function] [call site] 00140
10 WLog_Appender_Free [function] [call site] 00141
11 WLog_Layout_Free [function] [call site] 00142
11 DeleteCriticalSection [function] [call site] 00143
12 winpr_int_assert [function] [call site] 00144
12 sem_destroy [call site] 00145
10 DeleteCriticalSection [function] [call site] 00146
8 WLog_AddChild [function] [call site] 00147
9 WLog_Lock [function] [call site] 00148
9 realloc [call site] 00149
9 WLog_Unlock [function] [call site] 00150
8 WLog_Free [function] [call site] 00151
4 WLog_Print_dbg_tag [function] [call site] 00152
4 Sleep [function] [call site] 00153
5 usleep [call site] 00154
3 WLog_InitializeRoot [function] [call site] 00155
4 WLog_New [function] [call site] 00156
4 GetEnvironmentVariableA [function] [call site] 00157
4 GetEnvironmentVariableA [function] [call site] 00158
4 fprintf [call site] 00159
4 _stricmp [function] [call site] 00160
4 _stricmp [function] [call site] 00161
4 _stricmp [function] [call site] 00162
4 _stricmp [function] [call site] 00163
4 _stricmp [function] [call site] 00164
4 WLog_SetLogAppenderType [function] [call site] 00165
5 WLog_Appender_Free [function] [call site] 00166
5 WLog_Appender_New [function] [call site] 00167
6 WLog_ConsoleAppender_New [function] [call site] 00168
7 calloc [call site] 00169
6 WLog_FileAppender_New [function] [call site] 00170
7 calloc [call site] 00171
7 GetEnvironmentVariableA [function] [call site] 00172
7 GetEnvironmentVariableA [function] [call site] 00173
7 WLog_FileAppender_SetOutputFilePath [function] [call site] 00174
8 _strdup [function] [call site] 00175
7 GetEnvironmentVariableA [function] [call site] 00176
7 GetEnvironmentVariableA [function] [call site] 00177
7 WLog_FileAppender_SetOutputFileName [function] [call site] 00178
8 winpr_int_assert [function] [call site] 00179
8 winpr_int_assert [function] [call site] 00180
8 _strdup [function] [call site] 00181
6 WLog_BinaryAppender_New [function] [call site] 00182
7 calloc [call site] 00183
6 WLog_CallbackAppender_New [function] [call site] 00184
6 WLog_SyslogAppender_New [function] [call site] 00185
7 calloc [call site] 00186
6 WLog_UdpAppender_New [function] [call site] 00187
7 calloc [call site] 00188
7 _socket [function] [call site] 00189
8 socket [call site] 00190
7 GetEnvironmentVariableA [function] [call site] 00191
7 GetEnvironmentVariableA [function] [call site] 00192
7 WLog_UdpAppender_Open [function] [call site] 00193
8 strchr [call site] 00194
8 winpr_int_assert [function] [call site] 00195
8 getaddrinfo [call site] 00196
8 freeaddrinfo [call site] 00197
8 freeaddrinfo [call site] 00198
7 _strdup [function] [call site] 00199
7 closesocket [function] [call site] 00200
8 close [call site] 00201
6 fprintf [call site] 00202
6 WLog_ConsoleAppender_New [function] [call site] 00203
6 WLog_Layout_New [function] [call site] 00204
7 calloc [call site] 00205
7 GetEnvironmentVariableA [function] [call site] 00206
7 GetEnvironmentVariableA [function] [call site] 00207
7 _strdup [function] [call site] 00208
6 WLog_Appender_Free [function] [call site] 00209
6 InitializeCriticalSectionAndSpinCount [function] [call site] 00210
6 WLog_Appender_Free [function] [call site] 00211
4 WLog_ParseFilters [function] [call site] 00212
5 GetEnvironmentVariableA [function] [call site] 00213
5 GetEnvironmentVariableA [function] [call site] 00214
5 WLog_AddStringLogFilters_int [function] [call site] 00215
6 strchr [call site] 00216
6 realloc [call site] 00217
6 _strdup [function] [call site] 00218
6 strchr [call site] 00219
6 WLog_ParseFilter [function] [call site] 00220
7 strchr [call site] 00221
7 _strdup [function] [call site] 00222
7 calloc [call site] 00223
7 strrchr [call site] 00224
7 WLog_ParseLogLevel [function] [call site] 00225
7 strchr [call site] 00226
6 WLog_reset_log_filters [function] [call site] 00227
4 winpr_atexit [function] [call site] 00228
5 atexit [call site] 00229
5 __errno_location [call site] 00230
5 winpr_strerror [function] [call site] 00231
6 __xpg_strerror_r [call site] 00232
5 WLog_Print_dbg_tag [function] [call site] 00233
4 WLog_Uninit_ [function] [call site] 00234
5 WLog_Free [function] [call site] 00235
5 WLog_Free [function] [call site] 00236
4 WLog_Uninit_ [function] [call site] 00237
1 Stream_StaticConstInit [function] [call site] 00238
2 Stream_StaticInit [function] [call site] 00239
3 winpr_int_assert [function] [call site] 00240
3 winpr_int_assert [function] [call site] 00241
1 fuzz_format_list [function] [call site] 00242
2 fuzz_stream_len_u32 [function] [call site] 00243
3 Stream_GetRemainingLength [function] [call site] 00244
4 winpr_int_assert [function] [call site] 00245
4 winpr_int_assert [function] [call site] 00246
4 winpr_int_assert [function] [call site] 00247
4 winpr_int_assert [function] [call site] 00248
4 WLog_Print_dbg_tag [function] [call site] 00249
4 winpr_log_backtrace [function] [call site] 00250
5 WLog_Get [function] [call site] 00251
5 winpr_log_backtrace_ex [function] [call site] 00252
2 cliprdr_read_format_list [function] [call site] 00253
3 Stream_ConstPointer [function] [call site] 00254
4 winpr_int_assert [function] [call site] 00255
3 Stream_StaticConstInit [function] [call site] 00256
3 Stream_SafeSeekEx [function] [call site] 00257
4 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00258
5 winpr_int_assert [function] [call site] 00259
5 Stream_GetRemainingLength [function] [call site] 00260
5 Stream_CheckAndLogRequiredLengthExVa [function] [call site] 00261
6 winpr_int_assert [function] [call site] 00262
6 Stream_GetRemainingLength [function] [call site] 00263
6 WLog_Get [function] [call site] 00264
6 Stream_CheckAndLogRequiredLengthWLogExVa [function] [call site] 00265
7 winpr_int_assert [function] [call site] 00266
7 Stream_GetRemainingLength [function] [call site] 00267
7 vsnprintf [call site] 00268
7 WLog_IsLevelActive [function] [call site] 00269
7 WLog_PrintTextMessage [function] [call site] 00270
7 winpr_log_backtrace_ex [function] [call site] 00271
4 Stream_Seek [function] [call site] 00272
5 winpr_int_assert [function] [call site] 00273
5 Stream_GetRemainingCapacity [function] [call site] 00274
6 winpr_int_assert [function] [call site] 00275
6 winpr_int_assert [function] [call site] 00276
6 winpr_int_assert [function] [call site] 00277
6 WLog_Print_dbg_tag [function] [call site] 00278
6 winpr_log_backtrace [function] [call site] 00279
5 winpr_int_assert [function] [call site] 00280
3 Stream_Capacity [function] [call site] 00281
4 winpr_int_assert [function] [call site] 00282
3 WLog_IsLevelActive [function] [call site] 00283
3 WLog_PrintTextMessage [function] [call site] 00284
3 calloc [call site] 00285
3 WLog_IsLevelActive [function] [call site] 00286
3 WLog_PrintTextMessage [function] [call site] 00287
3 Stream_GetRemainingLength [function] [call site] 00288
3 stream_read_u32_le [function] [call site] 00289
4 winpr_int_assert [function] [call site] 00290
4 Stream_GetRemainingLength [function] [call site] 00291
4 winpr_Data_Get_UINT32 [function] [call site] 00292
5 winpr_int_assert [function] [call site] 00293
4 Stream_Seek [function] [call site] 00294
3 Stream_ConstPointer [function] [call site] 00295
3 Stream_ConstPointer [function] [call site] 00296
3 Stream_SafeSeekEx [function] [call site] 00297
3 strndup [call site] 00298
3 WLog_IsLevelActive [function] [call site] 00299
3 WLog_PrintTextMessage [function] [call site] 00300
3 ConvertWCharNToUtf8Alloc [function] [call site] 00301
4 ConvertWCharNToUtf8 [function] [call site] 00302
5 winpr_int_assert [function] [call site] 00303
5 _wcsnlen [function] [call site] 00304
6 winpr_int_assert [function] [call site] 00305
5 SetLastError [function] [call site] 00306
5 WideCharToMultiByte [function] [call site] 00307
6 int_WideCharToMultiByte [function] [call site] 00308
7 winpr_int_assert [function] [call site] 00309
7 _wcslen [function] [call site] 00310
8 winpr_int_assert [function] [call site] 00311
7 winpr_int_assert [function] [call site] 00312
7 winpr_ConvertUTF16toUTF8 [function] [call site] 00313
8 _wcsnlen [function] [call site] 00314
8 winpr_ConvertUTF16toUTF8_Internal [function] [call site] 00315
9 setWcharFrom [function] [call site] 00316
9 setWcharFrom [function] [call site] 00317
8 winpr_ConvertUTF16toUTF8_Internal [function] [call site] 00318
8 SetLastError [function] [call site] 00319
8 winpr_int_assert [function] [call site] 00320
4 calloc [call site] 00321
4 ConvertWCharNToUtf8 [function] [call site] 00322
4 winpr_int_assert [function] [call site] 00323
3 Stream_GetRemainingLength [function] [call site] 00324
3 Stream_SafeSeekEx [function] [call site] 00325
3 Stream_ConstPointer [function] [call site] 00326
3 Stream_GetRemainingLength [function] [call site] 00327
3 _wcsnlen [function] [call site] 00328
3 Stream_SafeSeekEx [function] [call site] 00329
3 calloc [call site] 00330
3 WLog_IsLevelActive [function] [call site] 00331
3 WLog_PrintTextMessage [function] [call site] 00332
3 Stream_GetRemainingLength [function] [call site] 00333
3 stream_read_u32_le [function] [call site] 00334
3 Stream_ConstPointer [function] [call site] 00335
3 Stream_GetRemainingLength [function] [call site] 00336
3 _wcsnlen [function] [call site] 00337
3 Stream_SafeSeekEx [function] [call site] 00338
3 ConvertWCharNToUtf8Alloc [function] [call site] 00339
3 cliprdr_free_format_list [function] [call site] 00340
2 cliprdr_free_format_list [function] [call site] 00341
1 fuzz_format_data_request [function] [call site] 00342
2 fuzz_stream_len_u32 [function] [call site] 00343
2 cliprdr_read_format_data_request [function] [call site] 00344
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00345
3 stream_read_u32_le [function] [call site] 00346
1 fuzz_format_data_response [function] [call site] 00347
2 fuzz_stream_len_u32 [function] [call site] 00348
2 cliprdr_read_format_data_response [function] [call site] 00349
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00350
3 Stream_ConstPointer [function] [call site] 00351
3 Stream_SafeSeekEx [function] [call site] 00352
1 fuzz_file_contents_request [function] [call site] 00353
2 fuzz_stream_len_u32 [function] [call site] 00354
2 cliprdr_read_file_contents_request [function] [call site] 00355
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00356
3 stream_read_u32_le [function] [call site] 00357
3 stream_read_u32_le [function] [call site] 00358
3 stream_read_u32_le [function] [call site] 00359
3 stream_read_u32_le [function] [call site] 00360
3 stream_read_u32_le [function] [call site] 00361
3 stream_read_u32_le [function] [call site] 00362
3 Stream_GetRemainingLength [function] [call site] 00363
3 stream_read_u32_le [function] [call site] 00364
3 cliprdr_validate_file_contents_request [function] [call site] 00365
4 WLog_Print_dbg_tag [function] [call site] 00366
4 WLog_Print_dbg_tag [function] [call site] 00367
1 fuzz_file_contents_response [function] [call site] 00368
2 fuzz_stream_len_u32 [function] [call site] 00369
2 cliprdr_read_file_contents_response [function] [call site] 00370
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00371
3 stream_read_u32_le [function] [call site] 00372
3 Stream_ConstPointer [function] [call site] 00373
3 WLog_Print_dbg_tag [function] [call site] 00374
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00375
3 Stream_Seek [function] [call site] 00376
1 fuzz_unlock [function] [call site] 00377
2 fuzz_stream_len_u32 [function] [call site] 00378
2 cliprdr_read_unlock_clipdata [function] [call site] 00379
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00380
3 stream_read_u32_le [function] [call site] 00381