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
57 326 ConvertWCharNToUtf8Alloc call site: 00326 ConvertWCharNToUtf8Alloc
19 185 WLog_Appender_New call site: 00185 WLog_UdpAppender_New
14 115 NtCurrentTeb call site: 00115 GetEnvironmentVariableA
14 170 WLog_ConsoleAppender_New call site: 00170 WLog_FileAppender_New
14 214 WLog_ParseFilters call site: 00214 WLog_AddStringLogFilters_int
7 73 EnterCriticalSection call site: 00073 log_recursion
7 158 WLog_InitializeRoot call site: 00158 GetEnvironmentVariableA
7 284 Stream_Capacity call site: 00284 stream_read_u32_le
7 297 stream_read_u32_le call site: 00297 ConvertWCharNToUtf8Alloc
6 249 Stream_GetRemainingLength call site: 00249 cliprdr_read_format_list
5 84 InterlockedDecrement call site: 00084 UnWaitCriticalSection
4 42 unwind_backtrace_callback call site: 00042 WLog_Print_dbg_tag

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 WLog_IsLevelActive [function] [call site] 00033
18 winpr_backtrace [function] [call site] 00034
19 winpr_unwind_backtrace [function] [call site] 00035
20 calloc [call site] 00036
20 calloc [call site] 00037
20 _Unwind_Backtrace [call site] 00038
20 unwind_backtrace_callback [function] [call site] 00039
21 __assert_fail [call site] 00040
21 _Unwind_GetIP [call site] 00041
21 _Unwind_GetLanguageSpecificData [call site] 00042
20 unwind_reason_str_buffer [function] [call site] 00043
21 unwind_reason_str [function] [call site] 00044
21 snprintf [call site] 00045
20 WLog_Print_dbg_tag [function] [call site] 00046
21 WLog_Get [function] [call site] 00047
21 WLog_IsLevelActive [function] [call site] 00048
21 WLog_PrintTextMessageVA [function] [call site] 00049
20 winpr_unwind_backtrace_free [function] [call site] 00050
18 WLog_IsLevelActive [function] [call site] 00051
18 WLog_PrintTextMessage [function] [call site] 00052
18 winpr_backtrace_symbols [function] [call site] 00053
19 WLog_Print_dbg_tag [function] [call site] 00054
19 winpr_unwind_backtrace_symbols [function] [call site] 00055
20 calloc [call site] 00056
20 dladdr [call site] 00057
20 snprintf [call site] 00058
20 snprintf [call site] 00059
18 WLog_IsLevelActive [function] [call site] 00060
18 WLog_PrintTextMessage [function] [call site] 00061
18 winpr_backtrace_free [function] [call site] 00062
19 winpr_unwind_backtrace_free [function] [call site] 00063
17 abort [call site] 00064
16 InterlockedIncrement [function] [call site] 00065
17 winpr_int_assert [function] [call site] 00066
16 GetCurrentThreadId [function] [call site] 00067
17 syscall [call site] 00068
16 WaitForCriticalSection [function] [call site] 00069
17 winpr_int_assert [function] [call site] 00070
17 winpr_int_assert [function] [call site] 00071
17 sem_wait [call site] 00072
16 GetCurrentThreadId [function] [call site] 00073
15 log_recursion [function] [call site] 00074
16 winpr_backtrace [function] [call site] 00075
16 winpr_backtrace_symbols [function] [call site] 00076
16 fprintf [call site] 00077
16 fprintf [call site] 00078
16 fprintf [call site] 00079
16 winpr_backtrace_free [function] [call site] 00080
15 LeaveCriticalSection [function] [call site] 00081
16 winpr_int_assert [function] [call site] 00082
16 InterlockedDecrement [function] [call site] 00083
17 winpr_int_assert [function] [call site] 00084
16 UnWaitCriticalSection [function] [call site] 00085
17 winpr_int_assert [function] [call site] 00086
17 winpr_int_assert [function] [call site] 00087
17 sem_post [call site] 00088
16 InterlockedDecrement [function] [call site] 00089
10 EnterCriticalSection [function] [call site] 00090
9 strcmp [call site] 00091
9 WLog_Unlock [function] [call site] 00092
10 winpr_int_assert [function] [call site] 00093
10 LeaveCriticalSection [function] [call site] 00094
8 WLog_New [function] [call site] 00095
9 calloc [call site] 00096
9 _strdup [function] [call site] 00097
10 strdup [call site] 00098
10 WLog_Print_dbg_tag [function] [call site] 00099
9 WLog_ParseName [function] [call site] 00100
10 strchr [call site] 00101
10 _strdup [function] [call site] 00102
10 calloc [call site] 00103
10 strchr [call site] 00104
9 GetEnvironmentVariableA [function] [call site] 00105
10 getenv [call site] 00106
10 SetLastError [function] [call site] 00107
11 NtCurrentTeb [function] [call site] 00108
12 pthread_once [call site] 00109
12 sTebInitOnce [function] [call site] 00110
13 pthread_key_create [call site] 00111
13 sTebDestruct [function] [call site] 00112
12 pthread_getspecific [call site] 00113
12 calloc [call site] 00114
12 pthread_setspecific [call site] 00115
10 strlen [call site] 00116
9 GetEnvironmentVariableA [function] [call site] 00117
9 fprintf [call site] 00118
9 WLog_ParseLogLevel [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
10 _stricmp [function] [call site] 00126
9 WLog_SetLogLevel [function] [call site] 00127
10 WLog_UpdateInheritLevel [function] [call site] 00128
11 WLog_UpdateInheritLevel [function] [call site] 00129
10 WLog_reset_log_filters [function] [call site] 00130
11 WLog_reset_log_filters [function] [call site] 00131
9 WLog_GetFilterLogLevel [function] [call site] 00132
9 WLog_SetLogLevel [function] [call site] 00133
9 InitializeCriticalSectionAndSpinCount [function] [call site] 00134
10 InitializeCriticalSectionEx [function] [call site] 00135
11 winpr_int_assert [function] [call site] 00136
11 WLog_Print_dbg_tag [function] [call site] 00137
11 sem_init [call site] 00138
11 SetCriticalSectionSpinCount [function] [call site] 00139
12 winpr_int_assert [function] [call site] 00140
9 WLog_Free [function] [call site] 00141
10 WLog_Appender_Free [function] [call site] 00142
11 WLog_Layout_Free [function] [call site] 00143
11 DeleteCriticalSection [function] [call site] 00144
12 winpr_int_assert [function] [call site] 00145
12 sem_destroy [call site] 00146
10 DeleteCriticalSection [function] [call site] 00147
8 WLog_AddChild [function] [call site] 00148
9 WLog_Lock [function] [call site] 00149
9 realloc [call site] 00150
9 WLog_Unlock [function] [call site] 00151
8 WLog_Free [function] [call site] 00152
4 WLog_Print_dbg_tag [function] [call site] 00153
4 Sleep [function] [call site] 00154
5 usleep [call site] 00155
3 WLog_InitializeRoot [function] [call site] 00156
4 WLog_New [function] [call site] 00157
4 GetEnvironmentVariableA [function] [call site] 00158
4 GetEnvironmentVariableA [function] [call site] 00159
4 fprintf [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 _stricmp [function] [call site] 00165
4 WLog_SetLogAppenderType [function] [call site] 00166
5 WLog_Appender_Free [function] [call site] 00167
5 WLog_Appender_New [function] [call site] 00168
6 WLog_ConsoleAppender_New [function] [call site] 00169
7 calloc [call site] 00170
6 WLog_FileAppender_New [function] [call site] 00171
7 calloc [call site] 00172
7 GetEnvironmentVariableA [function] [call site] 00173
7 GetEnvironmentVariableA [function] [call site] 00174
7 WLog_FileAppender_SetOutputFilePath [function] [call site] 00175
8 _strdup [function] [call site] 00176
7 GetEnvironmentVariableA [function] [call site] 00177
7 GetEnvironmentVariableA [function] [call site] 00178
7 WLog_FileAppender_SetOutputFileName [function] [call site] 00179
8 winpr_int_assert [function] [call site] 00180
8 winpr_int_assert [function] [call site] 00181
8 _strdup [function] [call site] 00182
6 WLog_BinaryAppender_New [function] [call site] 00183
7 calloc [call site] 00184
6 WLog_CallbackAppender_New [function] [call site] 00185
6 WLog_SyslogAppender_New [function] [call site] 00186
7 calloc [call site] 00187
6 WLog_UdpAppender_New [function] [call site] 00188
7 calloc [call site] 00189
7 _socket [function] [call site] 00190
8 socket [call site] 00191
7 GetEnvironmentVariableA [function] [call site] 00192
7 GetEnvironmentVariableA [function] [call site] 00193
7 WLog_UdpAppender_Open [function] [call site] 00194
8 strchr [call site] 00195
8 winpr_int_assert [function] [call site] 00196
8 getaddrinfo [call site] 00197
8 freeaddrinfo [call site] 00198
8 freeaddrinfo [call site] 00199
7 _strdup [function] [call site] 00200
7 closesocket [function] [call site] 00201
8 close [call site] 00202
6 fprintf [call site] 00203
6 WLog_ConsoleAppender_New [function] [call site] 00204
6 WLog_Layout_New [function] [call site] 00205
7 calloc [call site] 00206
7 GetEnvironmentVariableA [function] [call site] 00207
7 GetEnvironmentVariableA [function] [call site] 00208
7 _strdup [function] [call site] 00209
6 WLog_Appender_Free [function] [call site] 00210
6 InitializeCriticalSectionAndSpinCount [function] [call site] 00211
6 WLog_Appender_Free [function] [call site] 00212
4 WLog_ParseFilters [function] [call site] 00213
5 GetEnvironmentVariableA [function] [call site] 00214
5 GetEnvironmentVariableA [function] [call site] 00215
5 WLog_AddStringLogFilters_int [function] [call site] 00216
6 strchr [call site] 00217
6 realloc [call site] 00218
6 _strdup [function] [call site] 00219
6 strchr [call site] 00220
6 WLog_ParseFilter [function] [call site] 00221
7 strchr [call site] 00222
7 _strdup [function] [call site] 00223
7 calloc [call site] 00224
7 strrchr [call site] 00225
7 WLog_ParseLogLevel [function] [call site] 00226
7 strchr [call site] 00227
6 WLog_reset_log_filters [function] [call site] 00228
4 winpr_atexit [function] [call site] 00229
5 atexit [call site] 00230
5 __errno_location [call site] 00231
5 winpr_strerror [function] [call site] 00232
6 __xpg_strerror_r [call site] 00233
5 WLog_Print_dbg_tag [function] [call site] 00234
4 WLog_Uninit_ [function] [call site] 00235
5 WLog_Free [function] [call site] 00236
5 WLog_Free [function] [call site] 00237
4 WLog_Uninit_ [function] [call site] 00238
1 Stream_StaticConstInit [function] [call site] 00239
2 Stream_StaticInit [function] [call site] 00240
3 winpr_int_assert [function] [call site] 00241
3 winpr_int_assert [function] [call site] 00242
1 fuzz_format_list [function] [call site] 00243
2 fuzz_stream_len_u32 [function] [call site] 00244
3 Stream_GetRemainingLength [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 winpr_int_assert [function] [call site] 00249
4 WLog_Print_dbg_tag [function] [call site] 00250
4 winpr_log_backtrace [function] [call site] 00251
5 WLog_Get [function] [call site] 00252
5 winpr_log_backtrace_ex [function] [call site] 00253
2 cliprdr_read_format_list [function] [call site] 00254
3 Stream_ConstPointer [function] [call site] 00255
4 winpr_int_assert [function] [call site] 00256
3 Stream_StaticConstInit [function] [call site] 00257
3 Stream_SafeSeekEx [function] [call site] 00258
4 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00259
5 winpr_int_assert [function] [call site] 00260
5 Stream_GetRemainingLength [function] [call site] 00261
5 Stream_CheckAndLogRequiredLengthExVa [function] [call site] 00262
6 winpr_int_assert [function] [call site] 00263
6 Stream_GetRemainingLength [function] [call site] 00264
6 WLog_Get [function] [call site] 00265
6 Stream_CheckAndLogRequiredLengthWLogExVa [function] [call site] 00266
7 winpr_int_assert [function] [call site] 00267
7 Stream_GetRemainingLength [function] [call site] 00268
7 WLog_IsLevelActive [function] [call site] 00269
7 vsnprintf [call site] 00270
7 WLog_IsLevelActive [function] [call site] 00271
7 WLog_PrintTextMessage [function] [call site] 00272
7 winpr_log_backtrace_ex [function] [call site] 00273
4 Stream_Seek [function] [call site] 00274
5 winpr_int_assert [function] [call site] 00275
5 Stream_GetRemainingCapacity [function] [call site] 00276
6 winpr_int_assert [function] [call site] 00277
6 winpr_int_assert [function] [call site] 00278
6 winpr_int_assert [function] [call site] 00279
6 WLog_Print_dbg_tag [function] [call site] 00280
6 winpr_log_backtrace [function] [call site] 00281
5 winpr_int_assert [function] [call site] 00282
3 Stream_Capacity [function] [call site] 00283
4 winpr_int_assert [function] [call site] 00284
3 WLog_IsLevelActive [function] [call site] 00285
3 WLog_PrintTextMessage [function] [call site] 00286
3 calloc [call site] 00287
3 WLog_IsLevelActive [function] [call site] 00288
3 WLog_PrintTextMessage [function] [call site] 00289
3 Stream_GetRemainingLength [function] [call site] 00290
3 stream_read_u32_le [function] [call site] 00291
4 winpr_int_assert [function] [call site] 00292
4 Stream_GetRemainingLength [function] [call site] 00293
4 winpr_int_assert [function] [call site] 00294
4 winpr_Data_Get_UINT32 [function] [call site] 00295
5 winpr_int_assert [function] [call site] 00296
4 Stream_Seek [function] [call site] 00297
3 Stream_ConstPointer [function] [call site] 00298
3 Stream_ConstPointer [function] [call site] 00299
3 Stream_SafeSeekEx [function] [call site] 00300
3 strndup [call site] 00301
3 WLog_IsLevelActive [function] [call site] 00302
3 WLog_PrintTextMessage [function] [call site] 00303
3 ConvertWCharNToUtf8Alloc [function] [call site] 00304
4 ConvertWCharNToUtf8 [function] [call site] 00305
5 winpr_int_assert [function] [call site] 00306
5 _wcsnlen [function] [call site] 00307
6 winpr_int_assert [function] [call site] 00308
5 SetLastError [function] [call site] 00309
5 WideCharToMultiByte [function] [call site] 00310
6 int_WideCharToMultiByte [function] [call site] 00311
7 winpr_int_assert [function] [call site] 00312
7 _wcslen [function] [call site] 00313
8 winpr_int_assert [function] [call site] 00314
7 winpr_int_assert [function] [call site] 00315
7 winpr_ConvertUTF16toUTF8 [function] [call site] 00316
8 _wcsnlen [function] [call site] 00317
8 winpr_ConvertUTF16toUTF8_Internal [function] [call site] 00318
9 setWcharFrom [function] [call site] 00319
9 setWcharFrom [function] [call site] 00320
8 winpr_ConvertUTF16toUTF8_Internal [function] [call site] 00321
8 SetLastError [function] [call site] 00322
8 winpr_int_assert [function] [call site] 00323
4 calloc [call site] 00324
4 ConvertWCharNToUtf8 [function] [call site] 00325
4 winpr_int_assert [function] [call site] 00326
3 Stream_GetRemainingLength [function] [call site] 00327
3 Stream_SafeSeekEx [function] [call site] 00328
3 Stream_ConstPointer [function] [call site] 00329
3 Stream_GetRemainingLength [function] [call site] 00330
3 _wcsnlen [function] [call site] 00331
3 Stream_SafeSeekEx [function] [call site] 00332
3 calloc [call site] 00333
3 WLog_IsLevelActive [function] [call site] 00334
3 WLog_PrintTextMessage [function] [call site] 00335
3 Stream_GetRemainingLength [function] [call site] 00336
3 stream_read_u32_le [function] [call site] 00337
3 Stream_ConstPointer [function] [call site] 00338
3 Stream_GetRemainingLength [function] [call site] 00339
3 _wcsnlen [function] [call site] 00340
3 Stream_SafeSeekEx [function] [call site] 00341
3 ConvertWCharNToUtf8Alloc [function] [call site] 00342
3 cliprdr_free_format_list [function] [call site] 00343
2 cliprdr_free_format_list [function] [call site] 00344
1 fuzz_format_data_request [function] [call site] 00345
2 fuzz_stream_len_u32 [function] [call site] 00346
2 cliprdr_read_format_data_request [function] [call site] 00347
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00348
3 stream_read_u32_le [function] [call site] 00349
1 fuzz_format_data_response [function] [call site] 00350
2 fuzz_stream_len_u32 [function] [call site] 00351
2 cliprdr_read_format_data_response [function] [call site] 00352
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00353
3 Stream_ConstPointer [function] [call site] 00354
3 Stream_SafeSeekEx [function] [call site] 00355
1 fuzz_file_contents_request [function] [call site] 00356
2 fuzz_stream_len_u32 [function] [call site] 00357
2 cliprdr_read_file_contents_request [function] [call site] 00358
3 Stream_CheckAndLogRequiredLengthEx [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_read_u32_le [function] [call site] 00363
3 stream_read_u32_le [function] [call site] 00364
3 stream_read_u32_le [function] [call site] 00365
3 Stream_GetRemainingLength [function] [call site] 00366
3 stream_read_u32_le [function] [call site] 00367
3 cliprdr_validate_file_contents_request [function] [call site] 00368
4 WLog_Print_dbg_tag [function] [call site] 00369
1 fuzz_file_contents_response [function] [call site] 00370
2 fuzz_stream_len_u32 [function] [call site] 00371
2 cliprdr_read_file_contents_response [function] [call site] 00372
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00373
3 stream_read_u32_le [function] [call site] 00374
3 Stream_ConstPointer [function] [call site] 00375
3 WLog_Print_dbg_tag [function] [call site] 00376
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00377
3 Stream_Seek [function] [call site] 00378
1 fuzz_unlock [function] [call site] 00379
2 fuzz_stream_len_u32 [function] [call site] 00380
2 cliprdr_read_unlock_clipdata [function] [call site] 00381
3 Stream_CheckAndLogRequiredLengthEx [function] [call site] 00382
3 stream_read_u32_le [function] [call site] 00383