Fuzz introspector: dns_master_load_fuzzer
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity Unique Reachable Complexities Unique Reachable Functions All non-covered Complexity All Reachable Complexity Function Name Function Callsite Blocked Branch
1937 1937 4 :

['dns_compress_getpermitted', 'dns_compress_getmultiuse', 'isc_buffer_putuint16.5316', 'dns_compress_name']

1937 1937 dns_name_towire call site: 00000 /src/bind9/build/../lib/dns/name.c:1463
1273 24269 52 :

['dns_ttl_fromtext', 'dns_master_isprimary', 'incctx_destroy', 'dns_rdata_checksvcb', 'dns_name_issubdomain', 'grow_rdatalist', 'isc_lex_ungettoken', 'check_ns', 'is_glue', 'pushfile', 'limit_ttl', 'dns_rdata_checkowner', 'grow_rdata', 'dns_name_isdnssd', 'strncasecmp', 'dns_time64_fromtext', 'isc_lex_getsourceline', 'dns_rdatatype_ismeta.4464', 'isc_buffer_add.4416', 'dns_name_fromtext', 'dns_name_caseequal', 'isc_error_unexpected', 'dns_rdataclass_fromtext', 'dns_name_equal', 'find_free_name', 'dns_name_format', 'isc_buffer_init.4424', 'isc_stdtime_now', 'dns_rdata_init', 'dns_rdatatype_issig', 'isc_lex_getsourcename', 'isc_serial_lt', 'isc_lex_isfile', 'dns_rdata_covers', 'generate', 'dns_rdatatype_atparent.4452', 'gettoken', 'isc_result_totext', 'isc_error_fatal', 'dns_rdatalist_init', 'dns_rdataclass_format', 'dns_rdata_tostruct', 'dns_soa_getminimum', 'dns_rdatatype_format', 'isc__mem_strdup', 'dns_rdatatype_fromtext', 'isc_buffer_setactive.4466', 'strcasecmp', 'isc_lex_close', 'dns_fixedname_initname', 'check_wildcard', 'dns_rdata_fromtext']

1317 54626 load_text call site: 00000 /src/bind9/build/../lib/dns/master.c:1102
1242 1242 1 :

['closeversion']

1242 1242 qpzone_findrdataset call site: 00000 /src/bind9/build/../lib/dns/qpzone.c:1689
552 552 1 :

['dns__db_logtoomanyrecords']

552 552 loading_addrdataset call site: 00000 /src/bind9/build/../lib/dns/qpzone.c:2220
347 347 2 :

['isc__tlserr2result', 'isc_error_fatal']

347 347 isc__crypto_initialize call site: 00000 /src/bind9/build/../lib/isc/crypto.c:291
343 343 1 :

['isc__tlserr2result']

347 354 opensslrsa_build_pkey call site: 00000 /src/bind9/build/../lib/dns/opensslrsa_link.c:528
343 343 1 :

['isc__tlserr2result']

343 343 raw_key_to_ossl call site: 00000 /src/bind9/build/../lib/dns/openssleddsa_link.c:99
121 121 1 :

['warn_badname']

121 791 generic_fromtext_in_svcb call site: 00000 /src/bind9/lib/dns/rdata/in_1/svcb_64.c:597
121 121 1 :

['warn_badname']

121 121 fromtext_afsdb call site: 00000 /src/bind9/lib/dns/rdata/generic/afsdb_18.c:63
121 121 1 :

['warn_badname']

121 121 fromtext_mx call site: 00000 /src/bind9/lib/dns/rdata/generic/mx_15.c:94
121 121 1 :

['warn_badname']

121 121 fromtext_ns call site: 00000 /src/bind9/lib/dns/rdata/generic/ns_2.c:49
121 121 1 :

['warn_badname']

121 121 fromtext_rt call site: 00000 /src/bind9/lib/dns/rdata/generic/rt_21.c:60

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_buffer_clear [function] [call site] 00284
6 isc_assertion_failed [function] [call site] 00285
5 isc_buffer_availableregion [function] [call site] 00286
6 isc_assertion_failed [function] [call site] 00287
6 isc_assertion_failed [function] [call site] 00288
5 isc_assertion_failed [function] [call site] 00289
5 isc_assertion_failed [function] [call site] 00290
5 isc_assertion_failed [function] [call site] 00291
5 isc_buffer_add [function] [call site] 00292
3 isc_assertion_failed [function] [call site] 00293
3 isc_lex_create [function] [call site] 00294
4 isc_assertion_failed [function] [call site] 00295
4 isc__mem_get [function] [call site] 00296
4 isc__mem_get [function] [call site] 00297
3 isc_lex_setspecials [function] [call site] 00298
4 isc_assertion_failed [function] [call site] 00299
3 isc_lex_setcomments [function] [call site] 00300
4 isc_assertion_failed [function] [call site] 00301
3 isc_stdtime_now [function] [call site] 00302
4 clock_gettime [call site] 00303
4 __errno_location [call site] 00304
4 isc_string_strerror_r [function] [call site] 00305
4 isc_error_fatal [function] [call site] 00306
4 isc_assertion_failed [function] [call site] 00307
3 dns_fixedname_initname [function] [call site] 00308
4 dns_fixedname_init [function] [call site] 00309
4 dns_fixedname_name [function] [call site] 00310
3 dns_name_toregion [function] [call site] 00311
3 dns_name_fromregion [function] [call site] 00312
3 dns_master_initrawheader [function] [call site] 00313
3 isc_mem_attach [function] [call site] 00314
4 isc_assertion_failed [function] [call site] 00315
4 isc_mem_ref [function] [call site] 00316
2 isc_lex_openbuffer [function] [call site] 00317
3 isc_assertion_failed [function] [call site] 00318
3 snprintf [call site] 00319
3 new_source [function] [call site] 00320
4 isc__mem_get [function] [call site] 00321
4 isc__mem_strdup [function] [call site] 00322
5 isc_assertion_failed [function] [call site] 00323
5 isc_assertion_failed [function] [call site] 00324
5 strlen [call site] 00325
5 isc__mem_allocate [function] [call site] 00326
6 isc_assertion_failed [function] [call site] 00327
6 mem_get [function] [call site] 00328
6 sallocx [function] [call site] 00329
6 mem_getstats [function] [call site] 00330
5 strlcpy [function] [call site] 00331
4 isc_buffer_allocate [function] [call site] 00332
5 isc_assertion_failed [function] [call site] 00333
5 isc__mem_get [function] [call site] 00334
5 isc_buffer_init [function] [call site] 00335
5 isc_buffer_setmctx [function] [call site] 00336
6 isc_assertion_failed [function] [call site] 00337
2 isc_assertion_failed [function] [call site] 00338
2 dns_loadctx_detach [function] [call site] 00339
3 isc_assertion_failed [function] [call site] 00340
3 isc_assertion_failed [function] [call site] 00341
3 loadctx_destroy [function] [call site] 00342
4 isc_assertion_failed [function] [call site] 00343
4 isc_assertion_failed [function] [call site] 00344
4 incctx_destroy [function] [call site] 00345
5 isc__mem_put [function] [call site] 00346
6 isc_assertion_failed [function] [call site] 00347
6 mem_putstats [function] [call site] 00348
7 isc_tid [function] [call site] 00349
6 mem_put [function] [call site] 00350
7 sdallocx [function] [call site] 00351
4 isc_stdio_close [function] [call site] 00352
5 fclose [call site] 00353
5 __errno_location [call site] 00354
5 isc___errno2result [function] [call site] 00355
4 isc_result_totext [function] [call site] 00356
4 isc_error_unexpected [function] [call site] 00357
4 isc_lex_destroy [function] [call site] 00358
5 isc_assertion_failed [function] [call site] 00359
5 isc_assertion_failed [function] [call site] 00360
5 isc_lex_close [function] [call site] 00361
6 isc_assertion_failed [function] [call site] 00362
6 isc_assertion_failed [function] [call site] 00363
6 fclose [call site] 00364
6 isc__mem_free [function] [call site] 00365
7 isc_assertion_failed [function] [call site] 00366
7 isc_assertion_failed [function] [call site] 00367
7 sallocx [function] [call site] 00368
7 mem_putstats [function] [call site] 00369
7 mem_put [function] [call site] 00370
6 isc_buffer_free [function] [call site] 00371
7 isc_assertion_failed [function] [call site] 00372
7 isc_assertion_failed [function] [call site] 00373
7 isc_buffer_clearmctx [function] [call site] 00374
8 isc_assertion_failed [function] [call site] 00375
8 isc__mem_put [function] [call site] 00376
7 isc_buffer_invalidate [function] [call site] 00377
8 isc_assertion_failed [function] [call site] 00378
8 isc_assertion_failed [function] [call site] 00379
8 isc_assertion_failed [function] [call site] 00380
7 isc__mem_put [function] [call site] 00381
6 isc__mem_put [function] [call site] 00382
5 isc_error_fatal [function] [call site] 00383
5 isc__mem_put [function] [call site] 00384
5 isc__mem_put [function] [call site] 00385
4 isc__mem_putanddetach [function] [call site] 00386
5 isc_assertion_failed [function] [call site] 00387
5 isc_assertion_failed [function] [call site] 00388
5 isc_assertion_failed [function] [call site] 00389
5 isc__mem_put [function] [call site] 00390
5 isc_mem_detach [function] [call site] 00391
6 isc_mem_unref [function] [call site] 00392
7 mem_destroy [function] [call site] 00393
8 isc_assertion_failed [function] [call site] 00394
8 pthread_mutex_lock [call site] 00395
8 isc_string_strerror_r [function] [call site] 00396
8 isc_error_fatal [function] [call site] 00397
8 isc_assertion_failed [function] [call site] 00398
8 pthread_mutex_unlock [call site] 00399
8 isc_string_strerror_r [function] [call site] 00400
8 isc_error_fatal [function] [call site] 00401
8 isc_mem_inuse [function] [call site] 00402
9 isc_assertion_failed [function] [call site] 00403
9 isc_tid_count [function] [call site] 00404
9 isc_assertion_failed [function] [call site] 00405
8 isc_assertion_failed [function] [call site] 00406
8 isc_assertion_failed [function] [call site] 00407
8 pthread_mutex_destroy [call site] 00408
8 isc_string_strerror_r [function] [call site] 00409
8 isc_error_fatal [function] [call site] 00410
8 sdallocx [function] [call site] 00411
1 isc_result_totext [function] [call site] 00412
1 fprintf [call site] 00413
1 dns_db_endload [function] [call site] 00414
2 isc_assertion_failed [function] [call site] 00415
2 isc_assertion_failed [function] [call site] 00416
2 isc_assertion_failed [function] [call site] 00417
2 call_updatenotify [function] [call site] 00418
3 urcu_memb_read_lock [call site] 00419
3 rcu_dereference_sym [call site] 00420
3 cds_lfht_first [call site] 00421
3 cds_lfht_iter_get_node [function] [call site] 00422
3 cds_lfht_is_node_deleted [call site] 00423
3 cds_lfht_next [call site] 00424
3 urcu_memb_read_unlock [call site] 00425
1 isc_result_totext [function] [call site] 00426
1 fprintf [call site] 00427
1 dns_db_detach [function] [call site] 00428
2 isc_assertion_failed [function] [call site] 00429
2 dns_db_unref [function] [call site] 00430
3 dns__db_destroy [function] [call site] 00431
1 isc_mem_detach [function] [call site] 00432