Fuzz introspector: dns_master_load_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
126 109 isc_log_doit call site: 00109 isc_log_open
6 353 mem_put call site: 00353 isc_stdio_close
4 40 isc_rwlock_rdlock call site: 00040 read_indicator_depart
4 242 isc_log_doit call site: 00242 isc_assertion_failed
3 105 isc_time_formatISO8601TZms call site: 00105 snprintf
3 305 isc_stdtime_now call site: 00305 isc_string_strerror_r
3 426 call_updatenotify call site: 00426 urcu_memb_read_unlock
3 430 LLVMFuzzerTestOneInput call site: 00430 dns_db_unref
2 48 isc_rwlock_rdunlock call site: 00048 isc_log_write
2 238 isc_stdio_open call site: 00238 isc_result_totext
2 316 loadctx_create call site: 00316 isc_mem_ref
2 386 isc_lex_destroy call site: 00386 isc__mem_putanddetach

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 isc_buffer_init [function] [call site] 00001
2 isc_assertion_failed [function] [call site] 00002
3 abort [call site] 00003
1 isc_buffer_add [function] [call site] 00004
2 isc_assertion_failed [function] [call site] 00005
2 isc_assertion_failed [function] [call site] 00006
1 isc_buffer_setactive [function] [call site] 00007
2 isc_assertion_failed [function] [call site] 00008
2 isc_assertion_failed [function] [call site] 00009
1 dns_rdatacallbacks_init [function] [call site] 00010
2 dns_rdatacallbacks_initcommon [function] [call site] 00011
3 isc_assertion_failed [function] [call site] 00012
1 isc__mem_create [function] [call site] 00013
2 mem_create [function] [call site] 00014
3 isc_assertion_failed [function] [call site] 00015
3 isc_assertion_failed [function] [call site] 00016
3 mallocx [function] [call site] 00017
4 isc_assertion_failed [function] [call site] 00018
4 isc_assertion_failed [function] [call site] 00019
3 isc_assertion_failed [function] [call site] 00020
3 strdup [call site] 00021
3 pthread_mutex_init [call site] 00022
3 isc_string_strerror_r [function] [call site] 00023
4 __xpg_strerror_r [call site] 00024
3 isc_error_fatal [function] [call site] 00025
4 abort [call site] 00026
3 pthread_mutex_lock [call site] 00027
3 isc_string_strerror_r [function] [call site] 00028
3 isc_error_fatal [function] [call site] 00029
3 pthread_mutex_unlock [call site] 00030
3 isc_string_strerror_r [function] [call site] 00031
3 isc_error_fatal [function] [call site] 00032
1 dns_db_create [function] [call site] 00033
2 isc_assertion_failed [function] [call site] 00034
2 dns_name_isabsolute [function] [call site] 00035
3 isc_assertion_failed [function] [call site] 00036
2 isc_assertion_failed [function] [call site] 00037
2 isc_rwlock_rdlock [function] [call site] 00038
3 read_indicator_arrive [function] [call site] 00039
3 writers_lock_islocked [function] [call site] 00040
3 read_indicator_depart [function] [call site] 00041
3 writers_lock_islocked [function] [call site] 00042
3 writers_barrier_raise [function] [call site] 00043
3 writers_barrier_lower [function] [call site] 00044
2 impfind [function] [call site] 00045
3 strcasecmp [call site] 00046
2 isc_rwlock_rdunlock [function] [call site] 00047
3 read_indicator_depart [function] [call site] 00048
2 isc_rwlock_rdunlock [function] [call site] 00049
2 isc_log_write [function] [call site] 00050
3 isc_log_doit [function] [call site] 00051
4 isc_assertion_failed [function] [call site] 00052
4 isc_assertion_failed [function] [call site] 00053
4 isc_assertion_failed [function] [call site] 00054
4 isc_assertion_failed [function] [call site] 00055
4 isc_assertion_failed [function] [call site] 00056
4 isc_log_wouldlog [function] [call site] 00057
4 urcu_memb_read_lock [call site] 00058
4 pthread_mutex_lock [call site] 00059
4 isc_string_strerror_r [function] [call site] 00060
4 isc_error_fatal [function] [call site] 00061
4 rcu_dereference_sym [call site] 00062
4 isc_time_now [function] [call site] 00063
5 time_now [function] [call site] 00064
6 clock_gettime [call site] 00065
6 isc_error_fatal [function] [call site] 00066
6 isc_assertion_failed [function] [call site] 00067
6 isc_assertion_failed [function] [call site] 00068
4 isc_time_formattimestamp [function] [call site] 00069
5 isc_assertion_failed [function] [call site] 00070
5 isc_assertion_failed [function] [call site] 00071
5 isc_assertion_failed [function] [call site] 00072
5 isc_assertion_failed [function] [call site] 00073
5 localtime_r [call site] 00074
5 strftime [call site] 00075
5 isc_assertion_failed [function] [call site] 00076
5 snprintf [call site] 00077
5 strlcpy [function] [call site] 00078
4 isc_time_formatISO8601ms [function] [call site] 00079
5 isc_assertion_failed [function] [call site] 00080
5 isc_assertion_failed [function] [call site] 00081
5 isc_assertion_failed [function] [call site] 00082
5 isc_assertion_failed [function] [call site] 00083
5 gmtime_r [call site] 00084
5 strftime [call site] 00085
5 isc_assertion_failed [function] [call site] 00086
5 snprintf [call site] 00087
4 isc_time_formatISO8601Lms [function] [call site] 00088
5 isc_assertion_failed [function] [call site] 00089
5 isc_assertion_failed [function] [call site] 00090
5 isc_assertion_failed [function] [call site] 00091
5 isc_assertion_failed [function] [call site] 00092
5 localtime_r [call site] 00093
5 strftime [call site] 00094
5 isc_assertion_failed [function] [call site] 00095
5 snprintf [call site] 00096
4 isc_time_formatISO8601TZms [function] [call site] 00097
5 isc_assertion_failed [function] [call site] 00098
5 isc_assertion_failed [function] [call site] 00099
5 isc_assertion_failed [function] [call site] 00100
5 isc_assertion_failed [function] [call site] 00101
5 localtime_r [call site] 00102
5 strftime [call site] 00103
5 snprintf [call site] 00104
5 isc_assertion_failed [function] [call site] 00105
4 snprintf [call site] 00106
4 snprintf [call site] 00107
4 snprintf [call site] 00108
4 vsnprintf [call site] 00109
4 stat64 [call site] 00110
4 __errno_location [call site] 00111
4 fclose [call site] 00112
4 isc_log_open [function] [call site] 00113
5 isc_assertion_failed [function] [call site] 00114
5 isc_assertion_failed [function] [call site] 00115
5 isc_assertion_failed [function] [call site] 00116
5 stat64 [call site] 00117
5 __errno_location [call site] 00118
5 isc_logfile_roll [function] [call site] 00119
6 isc_assertion_failed [function] [call site] 00120
6 isc_file_remove [function] [call site] 00121
7 isc_assertion_failed [function] [call site] 00122
7 unlink [call site] 00123
7 __errno_location [call site] 00124
7 isc___errno2result [function] [call site] 00125
8 isc_string_strerror_r [function] [call site] 00126
8 isc_error_unexpected [function] [call site] 00127
6 isc_result_totext [function] [call site] 00128
6 syslog [call site] 00129
6 roll_increment [function] [call site] 00130
7 isc_assertion_failed [function] [call site] 00131
7 isc_assertion_failed [function] [call site] 00132
7 snprintf [call site] 00133
7 isc_file_exists [function] [call site] 00134
8 file_stats [function] [call site] 00135
9 isc_assertion_failed [function] [call site] 00136
9 isc_assertion_failed [function] [call site] 00137
9 stat64 [call site] 00138
9 __errno_location [call site] 00139
9 isc___errno2result [function] [call site] 00140
7 greatest_version [function] [call site] 00141
8 strrchr [call site] 00142
8 strlcpy [function] [call site] 00143
8 isc_result_totext [function] [call site] 00144
8 syslog [call site] 00145
8 strlen [call site] 00146
8 isc_dir_init [function] [call site] 00147
9 isc_assertion_failed [function] [call site] 00148
8 isc_dir_open [function] [call site] 00149
9 isc_assertion_failed [function] [call site] 00150
9 isc_assertion_failed [function] [call site] 00151
9 strlen [call site] 00152
9 strlcpy [function] [call site] 00153
9 strlen [call site] 00154
9 opendir [call site] 00155
9 __errno_location [call site] 00156
9 isc___errno2result [function] [call site] 00157
8 isc_dir_read [function] [call site] 00158
9 isc_assertion_failed [function] [call site] 00159
9 readdir64 [call site] 00160
9 strlen [call site] 00161
9 strlcpy [function] [call site] 00162
9 strlen [call site] 00163
8 strncmp [call site] 00164
8 strtol [call site] 00165
8 dirfd [call site] 00166
8 unlinkat [call site] 00167
8 __errno_location [call site] 00168
8 isc_errno_toresult [function] [call site] 00169
9 isc___errno2result [function] [call site] 00170
8 isc_result_totext [function] [call site] 00171
8 syslog [call site] 00172
8 isc_dir_close [function] [call site] 00173
9 isc_assertion_failed [function] [call site] 00174
9 closedir [call site] 00175
7 snprintf [call site] 00176
7 snprintf [call site] 00177
7 isc_file_rename [function] [call site] 00178
8 isc_assertion_failed [function] [call site] 00179
8 isc_assertion_failed [function] [call site] 00180
8 rename [call site] 00181
8 __errno_location [call site] 00182
8 isc___errno2result [function] [call site] 00183
7 isc_result_totext [function] [call site] 00184
7 syslog [call site] 00185
7 snprintf [call site] 00186
7 isc_file_rename [function] [call site] 00187
7 isc_result_totext [function] [call site] 00188
7 syslog [call site] 00189
6 roll_timestamp [function] [call site] 00190
7 isc_assertion_failed [function] [call site] 00191
7 isc_assertion_failed [function] [call site] 00192
7 remove_old_tsversions [function] [call site] 00193
8 strrchr [call site] 00194
8 strlcpy [function] [call site] 00195
8 isc_result_totext [function] [call site] 00196
8 syslog [call site] 00197
8 strlen [call site] 00198
8 isc_dir_init [function] [call site] 00199
8 isc_dir_open [function] [call site] 00200
8 last_to_keep [function] [call site] 00201
9 isc_dir_read [function] [call site] 00202
9 strncmp [call site] 00203
9 strtoull [call site] 00204
9 insert_sort [function] [call site] 00205
9 isc_dir_reset [function] [call site] 00206
10 isc_assertion_failed [function] [call site] 00207
10 rewinddir [call site] 00208
8 isc_dir_read [function] [call site] 00209
8 strncmp [call site] 00210
8 strtoull [call site] 00211
8 dirfd [call site] 00212
8 unlinkat [call site] 00213
8 __errno_location [call site] 00214
8 isc_errno_toresult [function] [call site] 00215
8 isc_result_totext [function] [call site] 00216
8 syslog [call site] 00217
8 isc_dir_close [function] [call site] 00218
7 isc_time_now [function] [call site] 00219
7 isc_time_formatshorttimestamp [function] [call site] 00220
8 isc_assertion_failed [function] [call site] 00221
8 isc_assertion_failed [function] [call site] 00222
8 isc_assertion_failed [function] [call site] 00223
8 isc_assertion_failed [function] [call site] 00224
8 gmtime_r [call site] 00225
8 strftime [call site] 00226
8 isc_assertion_failed [function] [call site] 00227
8 snprintf [call site] 00228
7 snprintf [call site] 00229
7 isc_file_rename [function] [call site] 00230
7 isc_result_totext [function] [call site] 00231
7 syslog [call site] 00232
5 isc_result_totext [function] [call site] 00233
5 syslog [call site] 00234
5 isc_stdio_open [function] [call site] 00235
6 fopen64 [call site] 00236
6 __errno_location [call site] 00237
6 isc___errno2result [function] [call site] 00238
4 isc_result_totext [function] [call site] 00239
4 syslog [call site] 00240
4 fprintf [call site] 00241
4 fflush [call site] 00242
4 isc_assertion_failed [function] [call site] 00243
4 fileno [call site] 00244
4 fstat64 [call site] 00245
4 syslog [call site] 00246
4 pthread_mutex_unlock [call site] 00247
4 isc_string_strerror_r [function] [call site] 00248
4 isc_error_fatal [function] [call site] 00249
4 urcu_memb_read_unlock [call site] 00250
1 dns_db_beginload [function] [call site] 00251
2 isc_assertion_failed [function] [call site] 00252
2 isc_assertion_failed [function] [call site] 00253
1 dns_master_loadbuffer [function] [call site] 00254
2 isc_assertion_failed [function] [call site] 00255
2 loadctx_create [function] [call site] 00256
3 isc_assertion_failed [function] [call site] 00257
3 isc_assertion_failed [function] [call site] 00258
3 dns_name_isabsolute [function] [call site] 00259
3 isc_assertion_failed [function] [call site] 00260
3 dns_name_isabsolute [function] [call site] 00261
3 isc_assertion_failed [function] [call site] 00262
3 isc__mem_get [function] [call site] 00263
4 isc_assertion_failed [function] [call site] 00264
4 mem_get [function] [call site] 00265
5 mallocx [function] [call site] 00266
5 isc_assertion_failed [function] [call site] 00267
4 mem_getstats [function] [call site] 00268
5 isc_tid [function] [call site] 00269
3 incctx_create [function] [call site] 00270
4 isc__mem_get [function] [call site] 00271
4 dns_fixedname_init [function] [call site] 00272
5 dns_name_init [function] [call site] 00273
5 isc_buffer_init [function] [call site] 00274
5 dns_name_setbuffer [function] [call site] 00275
6 isc_assertion_failed [function] [call site] 00276
6 isc_assertion_failed [function] [call site] 00277
4 dns_fixedname_name [function] [call site] 00278
4 dns_name_toregion [function] [call site] 00279
5 isc_assertion_failed [function] [call site] 00280
5 isc_assertion_failed [function] [call site] 00281
4 dns_name_fromregion [function] [call site] 00282
5 isc_assertion_failed [function] [call site] 00283
5 isc_assertion_failed [function] [call site] 00284
5 isc_assertion_failed [function] [call site] 00285
5 isc_buffer_clear [function] [call site] 00286
6 isc_assertion_failed [function] [call site] 00287
5 isc_buffer_availableregion [function] [call site] 00288
6 isc_assertion_failed [function] [call site] 00289
6 isc_assertion_failed [function] [call site] 00290
5 isc_assertion_failed [function] [call site] 00291
5 isc_assertion_failed [function] [call site] 00292
5 isc_assertion_failed [function] [call site] 00293
5 isc_buffer_add [function] [call site] 00294
3 isc_assertion_failed [function] [call site] 00295
3 isc_lex_create [function] [call site] 00296
4 isc_assertion_failed [function] [call site] 00297
4 isc__mem_get [function] [call site] 00298
4 isc__mem_get [function] [call site] 00299
3 isc_lex_setspecials [function] [call site] 00300
4 isc_assertion_failed [function] [call site] 00301
3 isc_lex_setcomments [function] [call site] 00302
4 isc_assertion_failed [function] [call site] 00303
3 isc_stdtime_now [function] [call site] 00304
4 clock_gettime [call site] 00305
4 __errno_location [call site] 00306
4 isc_string_strerror_r [function] [call site] 00307
4 isc_error_fatal [function] [call site] 00308
4 isc_assertion_failed [function] [call site] 00309
3 dns_fixedname_initname [function] [call site] 00310
4 dns_fixedname_init [function] [call site] 00311
4 dns_fixedname_name [function] [call site] 00312
3 dns_name_toregion [function] [call site] 00313
3 dns_name_fromregion [function] [call site] 00314
3 dns_master_initrawheader [function] [call site] 00315
3 isc_mem_attach [function] [call site] 00316
4 isc_assertion_failed [function] [call site] 00317
4 isc_mem_ref [function] [call site] 00318
2 isc_lex_openbuffer [function] [call site] 00319
3 isc_assertion_failed [function] [call site] 00320
3 snprintf [call site] 00321
3 new_source [function] [call site] 00322
4 isc__mem_get [function] [call site] 00323
4 isc__mem_strdup [function] [call site] 00324
5 isc_assertion_failed [function] [call site] 00325
5 isc_assertion_failed [function] [call site] 00326
5 strlen [call site] 00327
5 isc__mem_allocate [function] [call site] 00328
6 isc_assertion_failed [function] [call site] 00329
6 mem_get [function] [call site] 00330
6 sallocx [function] [call site] 00331
6 mem_getstats [function] [call site] 00332
5 strlcpy [function] [call site] 00333
4 isc_buffer_allocate [function] [call site] 00334
5 isc_assertion_failed [function] [call site] 00335
5 isc__mem_get [function] [call site] 00336
5 isc_buffer_init [function] [call site] 00337
5 isc_buffer_setmctx [function] [call site] 00338
6 isc_assertion_failed [function] [call site] 00339
2 isc_assertion_failed [function] [call site] 00340
2 dns_loadctx_detach [function] [call site] 00341
3 isc_assertion_failed [function] [call site] 00342
3 isc_assertion_failed [function] [call site] 00343
3 loadctx_destroy [function] [call site] 00344
4 isc_assertion_failed [function] [call site] 00345
4 isc_assertion_failed [function] [call site] 00346
4 incctx_destroy [function] [call site] 00347
5 isc__mem_put [function] [call site] 00348
6 isc_assertion_failed [function] [call site] 00349
6 mem_putstats [function] [call site] 00350
7 isc_tid [function] [call site] 00351
6 mem_put [function] [call site] 00352
7 sdallocx [function] [call site] 00353
4 isc_stdio_close [function] [call site] 00354
5 fclose [call site] 00355
5 __errno_location [call site] 00356
5 isc___errno2result [function] [call site] 00357
4 isc_result_totext [function] [call site] 00358
4 isc_error_unexpected [function] [call site] 00359
4 isc_lex_destroy [function] [call site] 00360
5 isc_assertion_failed [function] [call site] 00361
5 isc_assertion_failed [function] [call site] 00362
5 isc_lex_close [function] [call site] 00363
6 isc_assertion_failed [function] [call site] 00364
6 isc_assertion_failed [function] [call site] 00365
6 fclose [call site] 00366
6 isc__mem_free [function] [call site] 00367
7 isc_assertion_failed [function] [call site] 00368
7 isc_assertion_failed [function] [call site] 00369
7 sallocx [function] [call site] 00370
7 mem_putstats [function] [call site] 00371
7 mem_put [function] [call site] 00372
6 isc_buffer_free [function] [call site] 00373
7 isc_assertion_failed [function] [call site] 00374
7 isc_assertion_failed [function] [call site] 00375
7 isc_buffer_clearmctx [function] [call site] 00376
8 isc_assertion_failed [function] [call site] 00377
8 isc__mem_put [function] [call site] 00378
7 isc_buffer_invalidate [function] [call site] 00379
8 isc_assertion_failed [function] [call site] 00380
8 isc_assertion_failed [function] [call site] 00381
8 isc_assertion_failed [function] [call site] 00382
7 isc__mem_put [function] [call site] 00383
6 isc__mem_put [function] [call site] 00384
5 isc_error_fatal [function] [call site] 00385
5 isc__mem_put [function] [call site] 00386
5 isc__mem_put [function] [call site] 00387
4 isc__mem_putanddetach [function] [call site] 00388
5 isc_assertion_failed [function] [call site] 00389
5 isc_assertion_failed [function] [call site] 00390
5 isc_assertion_failed [function] [call site] 00391
5 isc__mem_put [function] [call site] 00392
5 isc_mem_detach [function] [call site] 00393
6 isc_mem_unref [function] [call site] 00394
7 mem_destroy [function] [call site] 00395
8 isc_assertion_failed [function] [call site] 00396
8 isc_assertion_failed [function] [call site] 00397
8 pthread_mutex_lock [call site] 00398
8 isc_string_strerror_r [function] [call site] 00399
8 isc_error_fatal [function] [call site] 00400
8 isc_assertion_failed [function] [call site] 00401
8 pthread_mutex_unlock [call site] 00402
8 isc_string_strerror_r [function] [call site] 00403
8 isc_error_fatal [function] [call site] 00404
8 isc_mem_inuse [function] [call site] 00405
9 isc_assertion_failed [function] [call site] 00406
9 isc_tid_count [function] [call site] 00407
9 isc_assertion_failed [function] [call site] 00408
8 isc_assertion_failed [function] [call site] 00409
8 pthread_mutex_destroy [call site] 00410
8 isc_string_strerror_r [function] [call site] 00411
8 isc_error_fatal [function] [call site] 00412
8 sdallocx [function] [call site] 00413
1 isc_result_totext [function] [call site] 00414
1 fprintf [call site] 00415
1 dns_db_endload [function] [call site] 00416
2 isc_assertion_failed [function] [call site] 00417
2 isc_assertion_failed [function] [call site] 00418
2 isc_assertion_failed [function] [call site] 00419
2 call_updatenotify [function] [call site] 00420
3 urcu_memb_read_lock [call site] 00421
3 rcu_dereference_sym [call site] 00422
3 cds_lfht_first [call site] 00423
3 cds_lfht_iter_get_node [function] [call site] 00424
3 cds_lfht_is_node_deleted [call site] 00425
3 cds_lfht_next [call site] 00426
3 urcu_memb_read_unlock [call site] 00427
1 isc_result_totext [function] [call site] 00428
1 fprintf [call site] 00429
1 dns_db_detach [function] [call site] 00430
2 isc_assertion_failed [function] [call site] 00431
2 dns_db_unref [function] [call site] 00432
3 dns__db_destroy [function] [call site] 00433
1 isc_mem_detach [function] [call site] 00434