Fuzz introspector: json_object_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
497 0 EP call site: 00000 json_tokener_parse

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 json_tokener_parse [function] [call site] 00001
2 json_tokener_parse_verbose [function] [call site] 00002
3 json_tokener_new [function] [call site] 00003
4 json_tokener_new_ex [function] [call site] 00004
5 calloc [call site] 00005
5 calloc [call site] 00006
5 printbuf_new [function] [call site] 00007
6 calloc [call site] 00008
5 json_tokener_reset [function] [call site] 00009
6 json_tokener_reset_level [function] [call site] 00010
7 json_object_put [function] [call site] 00011
8 _json_object_put_maybe_free [function] [call site] 00012
9 __assert_fail [call site] 00013
9 JC_OBJECT [function] [call site] 00014
9 lh_table_length [function] [call site] 00015
9 json_object_object_delete [function] [call site] 00016
10 JC_OBJECT [function] [call site] 00017
10 lh_table_free [function] [call site] 00018
10 json_object_generic_delete [function] [call site] 00019
11 printbuf_free [function] [call site] 00020
9 array_list_length [function] [call site] 00022
9 json_object_array_delete [function] [call site] 00023
10 JC_ARRAY [function] [call site] 00024
10 array_list_free [function] [call site] 00025
10 json_object_generic_delete [function] [call site] 00026
9 json_object_string_delete [function] [call site] 00027
10 JC_STRING [function] [call site] 00028
10 JC_STRING [function] [call site] 00029
10 json_object_generic_delete [function] [call site] 00030
9 json_object_generic_delete [function] [call site] 00031
8 JC_OBJECT [function] [call site] 00032
8 lh_table_length [function] [call site] 00033
8 JC_OBJECT [function] [call site] 00034
8 array_list_length [function] [call site] 00036
8 lh_entry_v [function] [call site] 00037
8 lh_entry_set_val [function] [call site] 00038
8 array_list_get_idx [function] [call site] 00040
8 array_list_set_idx [function] [call site] 00042
8 __assert_fail [call site] 00043
8 _json_object_put_maybe_free [function] [call site] 00044
8 JC_OBJECT [function] [call site] 00045
8 lh_table_delete_entry_to_tail [function] [call site] 00046
9 lh_table_delete_entry [function] [call site] 00047
10 __assert_fail [call site] 00048
8 array_list_del_idx [function] [call site] 00050
8 __assert_fail [call site] 00051
8 _json_object_put_maybe_free [function] [call site] 00052
8 __assert_fail [call site] 00053
3 json_tokener_parse_ex [function] [call site] 00054
4 uselocale [call site] 00055
4 strlen [call site] 00056
4 duplocale [call site] 00057
4 __errno_location [call site] 00058
4 newlocale [call site] 00059
4 freelocale [call site] 00060
4 uselocale [call site] 00061
4 json_tokener_validate_utf8 [function] [call site] 00062
4 is_ws_char [function] [call site] 00063
4 json_tokener_validate_utf8 [function] [call site] 00064
4 printbuf_reset [function] [call site] 00065
4 printbuf_memappend [function] [call site] 00066
5 __errno_location [call site] 00067
5 printbuf_extend [function] [call site] 00068
6 __errno_location [call site] 00069
6 realloc [call site] 00070
4 json_object_new_object [function] [call site] 00071
5 json_object_new [function] [call site] 00072
5 json_object_object_to_json_string [function] [call site] 00073
6 printbuf_memappend [function] [call site] 00074
6 json_object_get_object [function] [call site] 00075
7 JC_OBJECT_C [function] [call site] 00076
6 lh_table_head [function] [call site] 00077
6 lh_entry_k [function] [call site] 00078
6 lh_entry_v [function] [call site] 00079
6 printbuf_memappend [function] [call site] 00080
6 printbuf_memappend [function] [call site] 00081
6 printbuf_memappend [function] [call site] 00082
6 indent [function] [call site] 00083
7 printbuf_memset [function] [call site] 00084
8 __errno_location [call site] 00085
8 printbuf_extend [function] [call site] 00086
7 printbuf_memset [function] [call site] 00087
6 printbuf_memappend [function] [call site] 00088
6 printbuf_memappend [function] [call site] 00089
6 strlen [call site] 00090
6 json_escape_str [function] [call site] 00091
7 printbuf_memappend [function] [call site] 00092
7 printbuf_memappend [function] [call site] 00093
7 printbuf_memappend [function] [call site] 00094
7 printbuf_memappend [function] [call site] 00095
7 printbuf_memappend [function] [call site] 00096
7 printbuf_memappend [function] [call site] 00097
7 printbuf_memappend [function] [call site] 00098
7 printbuf_memappend [function] [call site] 00099
7 printbuf_memappend [function] [call site] 00100
7 printbuf_memappend [function] [call site] 00101
7 snprintf [call site] 00102
7 printbuf_memappend [function] [call site] 00103
7 printbuf_memappend [function] [call site] 00104
6 printbuf_memappend [function] [call site] 00105
6 printbuf_memappend [function] [call site] 00106
6 printbuf_memappend [function] [call site] 00107
6 printbuf_memappend [function] [call site] 00108
6 printbuf_memappend [function] [call site] 00109
6 printbuf_memappend [function] [call site] 00110
6 printbuf_memappend [function] [call site] 00111
6 lh_entry_next [function] [call site] 00112
6 printbuf_memappend [function] [call site] 00113
6 printbuf_memappend [function] [call site] 00115
6 printbuf_memappend [function] [call site] 00116
5 lh_kchar_table_new [function] [call site] 00117
6 lh_table_new [function] [call site] 00118
7 __assert_fail [call site] 00119
7 calloc [call site] 00120
7 calloc [call site] 00121
6 lh_char_equal [function] [call site] 00122
7 strcmp [call site] 00123
5 json_object_lh_entry_free [function] [call site] 00124
6 lh_entry_v [function] [call site] 00125
6 lh_entry_k_is_constant [function] [call site] 00126
6 lh_entry_k [function] [call site] 00127
6 json_object_put [function] [call site] 00128
5 json_object_generic_delete [function] [call site] 00129
5 __errno_location [call site] 00130
4 json_object_new_array [function] [call site] 00131
5 json_object_new_array_ext [function] [call site] 00132
6 json_object_new [function] [call site] 00133
6 json_object_array_to_json_string [function] [call site] 00134
7 printbuf_memappend [function] [call site] 00135
7 json_object_array_length [function] [call site] 00136
8 json_object_get_type [function] [call site] 00137
8 __assert_fail [call site] 00138
8 JC_ARRAY_C [function] [call site] 00139
8 array_list_length [function] [call site] 00140
7 printbuf_memappend [function] [call site] 00141
7 printbuf_memappend [function] [call site] 00142
7 printbuf_memappend [function] [call site] 00143
7 json_object_array_get_idx [function] [call site] 00145
8 json_object_get_type [function] [call site] 00146
8 __assert_fail [call site] 00147
8 JC_ARRAY_C [function] [call site] 00148
8 array_list_get_idx [function] [call site] 00149
7 printbuf_memappend [function] [call site] 00150
7 printbuf_memappend [function] [call site] 00151
7 printbuf_memappend [function] [call site] 00152
7 printbuf_memappend [function] [call site] 00153
7 printbuf_memappend [function] [call site] 00155
7 printbuf_memappend [function] [call site] 00156
6 array_list_new2 [function] [call site] 00157
6 json_object_array_entry_free [function] [call site] 00158
7 json_object_put [function] [call site] 00159
4 printbuf_reset [function] [call site] 00160
4 printbuf_reset [function] [call site] 00161
4 printbuf_reset [function] [call site] 00162
4 printbuf_reset [function] [call site] 00163
4 printbuf_reset [function] [call site] 00164
4 json_object_get [function] [call site] 00165
5 __assert_fail [call site] 00166
4 json_tokener_reset_level [function] [call site] 00167
4 json_tokener_validate_utf8 [function] [call site] 00168
4 json_object_new_double [function] [call site] 00169
5 json_object_new [function] [call site] 00170
5 json_object_double_to_json_string [function] [call site] 00171
6 json_object_double_to_json_string_format [function] [call site] 00172
7 JC_DOUBLE [function] [call site] 00173
7 snprintf [call site] 00174
7 snprintf [call site] 00175
7 snprintf [call site] 00176
7 snprintf [call site] 00177
7 strchr [call site] 00178
7 strchr [call site] 00179
7 strstr [call site] 00180
7 strchr [call site] 00181
7 strcat [call site] 00182
7 printbuf_memappend [function] [call site] 00183
4 printbuf_memappend [function] [call site] 00184
4 strncasecmp [call site] 00185
4 strncmp [call site] 00186
4 strncasecmp [call site] 00187
4 strncmp [call site] 00188
4 json_object_new_double [function] [call site] 00189
4 printbuf_memappend [function] [call site] 00190
4 json_tokener_validate_utf8 [function] [call site] 00191
4 printbuf_memappend [function] [call site] 00192
4 json_tokener_validate_utf8 [function] [call site] 00193
4 printbuf_memappend [function] [call site] 00194
4 printbuf_memappend [function] [call site] 00195
4 printbuf_memappend [function] [call site] 00196
4 printbuf_memappend [function] [call site] 00197
4 json_object_new_string_len [function] [call site] 00198
5 _json_object_new_string [function] [call site] 00199
6 json_object_new [function] [call site] 00200
6 json_object_string_to_json_string [function] [call site] 00201
7 JC_STRING [function] [call site] 00202
7 printbuf_memappend [function] [call site] 00203
7 printbuf_memappend [function] [call site] 00204
7 get_string_component [function] [call site] 00205
8 get_string_component_mutable [function] [call site] 00206
9 JC_STRING_C [function] [call site] 00207
9 JC_STRING [function] [call site] 00208
9 JC_STRING [function] [call site] 00209
7 json_escape_str [function] [call site] 00210
7 printbuf_memappend [function] [call site] 00211
7 printbuf_memappend [function] [call site] 00212
4 printbuf_memappend [function] [call site] 00213
4 json_tokener_validate_utf8 [function] [call site] 00214
4 printbuf_memappend [function] [call site] 00215
4 printbuf_memappend [function] [call site] 00216
4 printbuf_memappend [function] [call site] 00217
4 printbuf_memappend [function] [call site] 00218
4 printbuf_memappend [function] [call site] 00219
4 printbuf_memappend [function] [call site] 00220
4 printbuf_memappend [function] [call site] 00221
4 is_hex_char [function] [call site] 00222
4 json_tokener_validate_utf8 [function] [call site] 00223
4 printbuf_memappend [function] [call site] 00224
4 printbuf_memappend [function] [call site] 00225
4 printbuf_memappend [function] [call site] 00226
4 printbuf_memappend [function] [call site] 00227
4 printbuf_memappend [function] [call site] 00228
4 printbuf_memappend [function] [call site] 00229
4 printbuf_memappend [function] [call site] 00230
4 printbuf_memappend [function] [call site] 00231
4 printbuf_memappend [function] [call site] 00232
4 printbuf_memappend [function] [call site] 00233
4 strncasecmp [call site] 00234
4 strncmp [call site] 00235
4 json_object_new_boolean [function] [call site] 00236
5 json_object_new [function] [call site] 00237
5 json_object_boolean_to_json_string [function] [call site] 00238
6 printbuf_memappend [function] [call site] 00239
6 printbuf_memappend [function] [call site] 00241
6 printbuf_memappend [function] [call site] 00242
6 printbuf_memappend [function] [call site] 00243
4 strncasecmp [call site] 00244
4 strncmp [call site] 00245
4 json_object_new_boolean [function] [call site] 00246
4 strchr [call site] 00247
4 strchr [call site] 00248
4 json_tokener_validate_utf8 [function] [call site] 00249
4 printbuf_memappend [function] [call site] 00250
4 is_ws_char [function] [call site] 00251
4 printbuf_memappend [function] [call site] 00252
4 json_parse_int64 [function] [call site] 00253
5 __errno_location [call site] 00254
5 strtoll [call site] 00255
5 __errno_location [call site] 00256
5 __errno_location [call site] 00257
4 __errno_location [call site] 00258
4 json_object_new_int64 [function] [call site] 00259
5 json_object_new [function] [call site] 00260
5 json_object_int_to_json_string [function] [call site] 00261
6 snprintf [call site] 00264
6 snprintf [call site] 00266
6 strlen [call site] 00267
4 json_parse_uint64 [function] [call site] 00268
5 __errno_location [call site] 00269
5 strtoull [call site] 00270
5 __errno_location [call site] 00271
5 __errno_location [call site] 00272
4 __errno_location [call site] 00273
4 json_object_new_int64 [function] [call site] 00274
4 json_object_new_uint64 [function] [call site] 00275
5 json_object_new [function] [call site] 00276
5 json_object_int_to_json_string [function] [call site] 00277
4 json_tokener_parse_double [function] [call site] 00278
5 strtod [call site] 00279
4 json_object_new_double_s [function] [call site] 00280
5 json_object_new_double [function] [call site] 00281
5 strdup [call site] 00282
5 json_object_generic_delete [function] [call site] 00283
5 __errno_location [call site] 00284
5 json_object_set_serializer [function] [call site] 00285
6 json_object_set_userdata [function] [call site] 00286
7 __assert_fail [call site] 00287
5 _json_object_userdata_to_json_string [function] [call site] 00288
6 json_object_userdata_to_json_string [function] [call site] 00289
7 strlen [call site] 00290
7 printbuf_memappend [function] [call site] 00291
5 json_object_free_userdata [function] [call site] 00292
4 json_object_array_shrink [function] [call site] 00293
5 json_abort [function] [call site] 00294
6 fprintf [call site] 00295
6 abort [call site] 00296
5 array_list_shrink [function] [call site] 00298
6 array_list_expand_internal [function] [call site] 00299
7 realloc [call site] 00300
6 realloc [call site] 00301
4 json_tokener_reset_level [function] [call site] 00302
4 json_object_array_add [function] [call site] 00303
5 json_object_get_type [function] [call site] 00304
5 __assert_fail [call site] 00305
5 array_list_add [function] [call site] 00307
6 array_list_expand_internal [function] [call site] 00308
4 json_object_array_shrink [function] [call site] 00309
4 printbuf_reset [function] [call site] 00310
4 printbuf_memappend [function] [call site] 00311
4 strdup [call site] 00312
4 printbuf_memappend [function] [call site] 00313
4 json_tokener_validate_utf8 [function] [call site] 00314
4 printbuf_memappend [function] [call site] 00315
4 json_tokener_reset_level [function] [call site] 00316
4 json_object_object_add [function] [call site] 00317
5 json_object_object_add_ex [function] [call site] 00318
6 json_object_get_type [function] [call site] 00319
6 __assert_fail [call site] 00320
6 JC_OBJECT [function] [call site] 00321
6 lh_get_hash [function] [call site] 00322
6 JC_OBJECT [function] [call site] 00323
6 lh_table_lookup_entry_w_hash [function] [call site] 00324
6 strdup [call site] 00325
6 JC_OBJECT [function] [call site] 00326
6 lh_table_insert_w_hash [function] [call site] 00327
7 lh_table_resize [function] [call site] 00328
8 lh_table_new [function] [call site] 00329
8 lh_get_hash [function] [call site] 00330
8 lh_table_insert_w_hash [function] [call site] 00331
8 lh_table_free [function] [call site] 00332
6 lh_entry_v [function] [call site] 00333
6 json_object_put [function] [call site] 00334
6 lh_entry_set_val [function] [call site] 00335
4 uselocale [call site] 00336
4 freelocale [call site] 00337
4 json_object_get [function] [call site] 00338
4 json_tokener_reset_level [function] [call site] 00339
3 json_object_put [function] [call site] 00340
3 json_tokener_free [function] [call site] 00341
4 json_tokener_reset [function] [call site] 00342
4 printbuf_free [function] [call site] 00343
1 json_object_get_boolean [function] [call site] 00344
1 json_object_get_double [function] [call site] 00352
2 JC_DOUBLE_C [function] [call site] 00353
2 json_abort [function] [call site] 00357
2 JC_BOOL_C [function] [call site] 00358
2 __errno_location [call site] 00359
2 get_string_component [function] [call site] 00360
2 strtod [call site] 00361
2 get_string_component [function] [call site] 00362
2 __errno_location [call site] 00363
2 __errno_location [call site] 00364
2 __errno_location [call site] 00365
2 __errno_location [call site] 00366
1 json_object_get_int [function] [call site] 00367
2 __errno_location [call site] 00368
2 get_string_component [function] [call site] 00370
2 json_parse_int64 [function] [call site] 00371
2 __errno_location [call site] 00372
2 __errno_location [call site] 00373
2 JC_DOUBLE_C [function] [call site] 00374
2 __errno_location [call site] 00375
2 __errno_location [call site] 00376
2 __errno_location [call site] 00377
2 JC_BOOL_C [function] [call site] 00378
1 json_object_get_int64 [function] [call site] 00379
2 __errno_location [call site] 00380
2 __errno_location [call site] 00382
2 json_abort [function] [call site] 00383
2 JC_DOUBLE_C [function] [call site] 00384
2 __errno_location [call site] 00385
2 JC_DOUBLE_C [function] [call site] 00386
2 __errno_location [call site] 00387
2 JC_DOUBLE_C [function] [call site] 00388
2 __errno_location [call site] 00389
2 JC_DOUBLE_C [function] [call site] 00390
2 JC_BOOL_C [function] [call site] 00391
2 get_string_component [function] [call site] 00392
2 json_parse_int64 [function] [call site] 00393
1 json_object_get_uint64 [function] [call site] 00394
2 __errno_location [call site] 00395
2 __errno_location [call site] 00397
2 json_abort [function] [call site] 00398
2 JC_DOUBLE_C [function] [call site] 00399
2 __errno_location [call site] 00400
2 JC_DOUBLE_C [function] [call site] 00401
2 __errno_location [call site] 00402
2 JC_DOUBLE_C [function] [call site] 00403
2 __errno_location [call site] 00404
2 JC_DOUBLE_C [function] [call site] 00405
2 JC_BOOL_C [function] [call site] 00406
2 get_string_component [function] [call site] 00407
2 json_parse_uint64 [function] [call site] 00408
1 json_object_get_string [function] [call site] 00409
2 get_string_component [function] [call site] 00410
2 json_object_to_json_string [function] [call site] 00411
3 json_object_to_json_string_ext [function] [call site] 00412
4 json_object_to_json_string_length [function] [call site] 00413
5 printbuf_new [function] [call site] 00414
5 printbuf_reset [function] [call site] 00415
1 json_object_get_string_len [function] [call site] 00416
2 JC_STRING_C [function] [call site] 00417
2 _json_object_get_string_len [function] [call site] 00418
1 json_object_get_object [function] [call site] 00419
1 json_object_get_array [function] [call site] 00420
2 JC_ARRAY_C [function] [call site] 00421
1 json_object_get_type [function] [call site] 00422
1 json_c_visit [function] [call site] 00423
2 _json_c_visit [function] [call site] 00424
3 fprintf [call site] 00425
3 json_object_get_type [function] [call site] 00426
3 json_object_get_object [function] [call site] 00427
3 lh_table_head [function] [call site] 00428
3 lh_entry_k [function] [call site] 00429
3 lh_entry_v [function] [call site] 00430
3 lh_entry_next [function] [call site] 00431
3 _json_c_visit [function] [call site] 00432
4 fprintf [call site] 00433
4 json_object_array_length [function] [call site] 00434
4 json_object_array_get_idx [function] [call site] 00435
4 _json_c_visit [function] [call site] 00436
5 fprintf [call site] 00437
5 json_object_get_type [function] [call site] 00438
5 fprintf [call site] 00439
5 fprintf [call site] 00440
1 emit_object(json_object*, int, json_object*, char const*, unsigned long*, void*) [function] [call site] 00441
1 json_object_set_int [function] [call site] 00442
2 json_object_set_int64 [function] [call site] 00443
1 json_object_set_int64 [function] [call site] 00446
1 json_object_set_uint64 [function] [call site] 00447
1 json_object_set_double [function] [call site] 00450
2 JC_DOUBLE [function] [call site] 00451
2 json_object_set_serializer [function] [call site] 00452
1 json_object_set_string [function] [call site] 00453
2 strlen [call site] 00454
2 _json_object_set_string_len [function] [call site] 00455
3 JC_STRING [function] [call site] 00456
3 JC_STRING [function] [call site] 00457
3 JC_STRING [function] [call site] 00458
3 get_string_component_mutable [function] [call site] 00459
3 JC_STRING [function] [call site] 00460
3 JC_STRING [function] [call site] 00461
3 JC_STRING [function] [call site] 00462
3 JC_STRING [function] [call site] 00463
3 JC_STRING [function] [call site] 00464
1 json_object_set_boolean [function] [call site] 00465
1 json_object_set_string_len [function] [call site] 00467
2 _json_object_set_string_len [function] [call site] 00468
1 json_object_deep_copy [function] [call site] 00469
2 __errno_location [call site] 00470
2 json_object_deep_copy_recursive [function] [call site] 00471
3 __errno_location [call site] 00472
3 __assert_fail [call site] 00473
3 json_object_get_object [function] [call site] 00474
3 lh_table_head [function] [call site] 00475
3 lh_entry_k [function] [call site] 00476
3 lh_entry_v [function] [call site] 00477
3 json_object_deep_copy_recursive [function] [call site] 00478
4 json_object_put [function] [call site] 00479
4 json_object_object_add [function] [call site] 00480
4 json_object_put [function] [call site] 00481
4 lh_entry_next [function] [call site] 00482
4 json_object_array_length [function] [call site] 00483
4 json_object_array_get_idx [function] [call site] 00484
4 json_object_deep_copy_recursive [function] [call site] 00485
5 json_object_put [function] [call site] 00486
5 json_object_array_add [function] [call site] 00487
5 json_object_put [function] [call site] 00488
5 json_object_copy_serializer_data [function] [call site] 00489
6 __assert_fail [call site] 00490
6 strdup [call site] 00491
6 _json_c_set_last_err [function] [call site] 00492
7 vsnprintf [call site] 00493
6 _json_c_set_last_err [function] [call site] 00494
2 json_object_put [function] [call site] 00495
1 json_object_put [function] [call site] 00496
1 json_object_put [function] [call site] 00497