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
492 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 newlocale [call site] 00057
4 uselocale [call site] 00058
4 json_tokener_validate_utf8 [function] [call site] 00059
4 is_ws_char [function] [call site] 00060
4 json_tokener_validate_utf8 [function] [call site] 00061
4 printbuf_reset [function] [call site] 00062
4 printbuf_memappend [function] [call site] 00063
5 __errno_location [call site] 00064
5 printbuf_extend [function] [call site] 00065
6 __errno_location [call site] 00066
6 realloc [call site] 00067
4 json_object_new_object [function] [call site] 00068
5 json_object_new [function] [call site] 00069
5 json_object_object_to_json_string [function] [call site] 00070
6 printbuf_memappend [function] [call site] 00071
6 json_object_get_object [function] [call site] 00072
7 JC_OBJECT_C [function] [call site] 00073
6 lh_table_head [function] [call site] 00074
6 lh_entry_k [function] [call site] 00075
6 lh_entry_v [function] [call site] 00076
6 printbuf_memappend [function] [call site] 00077
6 printbuf_memappend [function] [call site] 00078
6 printbuf_memappend [function] [call site] 00079
6 indent [function] [call site] 00080
7 printbuf_memset [function] [call site] 00081
8 __errno_location [call site] 00082
8 printbuf_extend [function] [call site] 00083
7 printbuf_memset [function] [call site] 00084
6 printbuf_memappend [function] [call site] 00085
6 printbuf_memappend [function] [call site] 00086
6 strlen [call site] 00087
6 json_escape_str [function] [call site] 00088
7 printbuf_memappend [function] [call site] 00089
7 printbuf_memappend [function] [call site] 00090
7 printbuf_memappend [function] [call site] 00091
7 snprintf [call site] 00092
7 printbuf_memappend [function] [call site] 00093
7 printbuf_memappend [function] [call site] 00094
6 printbuf_memappend [function] [call site] 00095
6 printbuf_memappend [function] [call site] 00096
6 printbuf_memappend [function] [call site] 00097
6 printbuf_memappend [function] [call site] 00098
6 printbuf_memappend [function] [call site] 00099
6 printbuf_memappend [function] [call site] 00100
6 printbuf_memappend [function] [call site] 00101
6 lh_entry_next [function] [call site] 00102
6 printbuf_memappend [function] [call site] 00103
6 printbuf_memappend [function] [call site] 00105
6 printbuf_memappend [function] [call site] 00106
5 lh_kchar_table_new [function] [call site] 00107
6 lh_table_new [function] [call site] 00108
7 __assert_fail [call site] 00109
7 calloc [call site] 00110
7 calloc [call site] 00111
6 lh_char_equal [function] [call site] 00112
7 strcmp [call site] 00113
5 json_object_lh_entry_free [function] [call site] 00114
6 lh_entry_v [function] [call site] 00115
6 lh_entry_k_is_constant [function] [call site] 00116
6 lh_entry_k [function] [call site] 00117
6 json_object_put [function] [call site] 00118
5 json_object_generic_delete [function] [call site] 00119
5 __errno_location [call site] 00120
4 json_object_new_array [function] [call site] 00121
5 json_object_new_array_ext [function] [call site] 00122
6 json_object_new [function] [call site] 00123
6 json_object_array_to_json_string [function] [call site] 00124
7 printbuf_memappend [function] [call site] 00125
7 json_object_array_length [function] [call site] 00126
8 json_object_get_type [function] [call site] 00127
8 __assert_fail [call site] 00128
8 JC_ARRAY_C [function] [call site] 00129
8 array_list_length [function] [call site] 00130
7 printbuf_memappend [function] [call site] 00131
7 printbuf_memappend [function] [call site] 00132
7 printbuf_memappend [function] [call site] 00133
7 json_object_array_get_idx [function] [call site] 00135
8 json_object_get_type [function] [call site] 00136
8 __assert_fail [call site] 00137
8 JC_ARRAY_C [function] [call site] 00138
8 array_list_get_idx [function] [call site] 00139
7 printbuf_memappend [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 printbuf_memappend [function] [call site] 00145
7 printbuf_memappend [function] [call site] 00146
6 array_list_new2 [function] [call site] 00147
6 json_object_array_entry_free [function] [call site] 00148
7 json_object_put [function] [call site] 00149
4 printbuf_reset [function] [call site] 00150
4 printbuf_reset [function] [call site] 00151
4 printbuf_reset [function] [call site] 00152
4 printbuf_reset [function] [call site] 00153
4 printbuf_reset [function] [call site] 00154
4 json_object_get [function] [call site] 00155
5 __assert_fail [call site] 00156
4 json_tokener_reset_level [function] [call site] 00157
4 json_tokener_validate_utf8 [function] [call site] 00158
4 json_object_new_double [function] [call site] 00159
5 json_object_new [function] [call site] 00160
5 json_object_double_to_json_string [function] [call site] 00161
6 json_object_double_to_json_string_format [function] [call site] 00162
7 JC_DOUBLE [function] [call site] 00163
7 snprintf [call site] 00164
7 snprintf [call site] 00165
7 snprintf [call site] 00166
7 snprintf [call site] 00167
7 strchr [call site] 00168
7 strchr [call site] 00169
7 strstr [call site] 00170
7 strchr [call site] 00171
7 strcat [call site] 00172
7 printbuf_memappend [function] [call site] 00173
4 printbuf_memappend [function] [call site] 00174
4 strncasecmp [call site] 00175
4 strncmp [call site] 00176
4 strncasecmp [call site] 00177
4 strncmp [call site] 00178
4 json_object_new_double [function] [call site] 00179
4 printbuf_memappend [function] [call site] 00180
4 json_tokener_validate_utf8 [function] [call site] 00181
4 printbuf_memappend [function] [call site] 00182
4 printbuf_memappend [function] [call site] 00183
4 json_tokener_validate_utf8 [function] [call site] 00184
4 printbuf_memappend [function] [call site] 00185
4 printbuf_memappend [function] [call site] 00186
4 printbuf_memappend [function] [call site] 00187
4 printbuf_memappend [function] [call site] 00188
4 json_object_new_string_len [function] [call site] 00189
5 _json_object_new_string [function] [call site] 00190
6 json_object_new [function] [call site] 00191
6 json_object_string_to_json_string [function] [call site] 00192
7 JC_STRING [function] [call site] 00193
7 printbuf_memappend [function] [call site] 00194
7 printbuf_memappend [function] [call site] 00195
7 get_string_component [function] [call site] 00196
8 get_string_component_mutable [function] [call site] 00197
9 JC_STRING_C [function] [call site] 00198
9 JC_STRING [function] [call site] 00199
9 JC_STRING [function] [call site] 00200
7 json_escape_str [function] [call site] 00201
7 printbuf_memappend [function] [call site] 00202
7 printbuf_memappend [function] [call site] 00203
4 printbuf_memappend [function] [call site] 00204
4 json_tokener_validate_utf8 [function] [call site] 00205
4 printbuf_memappend [function] [call site] 00206
4 printbuf_memappend [function] [call site] 00207
4 printbuf_memappend [function] [call site] 00208
4 printbuf_memappend [function] [call site] 00209
4 printbuf_memappend [function] [call site] 00210
4 printbuf_memappend [function] [call site] 00211
4 printbuf_memappend [function] [call site] 00212
4 is_hex_char [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 printbuf_memappend [function] [call site] 00222
4 printbuf_memappend [function] [call site] 00223
4 printbuf_memappend [function] [call site] 00224
4 strncasecmp [call site] 00225
4 strncmp [call site] 00226
4 json_object_new_boolean [function] [call site] 00227
5 json_object_new [function] [call site] 00228
5 json_object_boolean_to_json_string [function] [call site] 00229
6 printbuf_memappend [function] [call site] 00230
6 printbuf_memappend [function] [call site] 00232
6 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
4 strchr [call site] 00237
4 strchr [call site] 00238
4 json_tokener_validate_utf8 [function] [call site] 00239
4 printbuf_memappend [function] [call site] 00240
4 is_ws_char [function] [call site] 00241
4 printbuf_memappend [function] [call site] 00242
4 json_parse_int64 [function] [call site] 00243
5 __errno_location [call site] 00244
5 strtoll [call site] 00245
5 __errno_location [call site] 00246
5 __errno_location [call site] 00247
4 __errno_location [call site] 00248
4 json_object_new_int64 [function] [call site] 00249
5 json_object_new [function] [call site] 00250
5 json_object_int_to_json_string [function] [call site] 00251
6 snprintf [call site] 00254
6 snprintf [call site] 00256
6 strlen [call site] 00257
6 printbuf_memappend [function] [call site] 00258
4 json_parse_uint64 [function] [call site] 00259
5 __errno_location [call site] 00260
5 strtoull [call site] 00261
5 __errno_location [call site] 00262
5 __errno_location [call site] 00263
4 __errno_location [call site] 00264
4 json_object_new_int64 [function] [call site] 00265
4 json_object_new_uint64 [function] [call site] 00266
5 json_object_new [function] [call site] 00267
5 json_object_int_to_json_string [function] [call site] 00268
4 json_tokener_parse_double [function] [call site] 00269
5 strtod [call site] 00270
4 json_object_new_double_s [function] [call site] 00271
5 json_object_new_double [function] [call site] 00272
5 strdup [call site] 00273
5 json_object_generic_delete [function] [call site] 00274
5 __errno_location [call site] 00275
5 json_object_set_serializer [function] [call site] 00276
6 json_object_set_userdata [function] [call site] 00277
7 __assert_fail [call site] 00278
5 _json_object_userdata_to_json_string [function] [call site] 00279
6 json_object_userdata_to_json_string [function] [call site] 00280
7 strlen [call site] 00281
7 printbuf_memappend [function] [call site] 00282
5 json_object_free_userdata [function] [call site] 00283
4 json_object_array_shrink [function] [call site] 00284
5 json_object_get_type [function] [call site] 00285
5 __assert_fail [call site] 00286
5 json_abort [function] [call site] 00287
6 fprintf [call site] 00288
6 abort [call site] 00289
5 array_list_shrink [function] [call site] 00291
6 array_list_expand_internal [function] [call site] 00292
7 realloc [call site] 00293
6 realloc [call site] 00294
4 json_tokener_reset_level [function] [call site] 00295
4 json_object_array_add [function] [call site] 00296
5 json_object_get_type [function] [call site] 00297
5 __assert_fail [call site] 00298
5 array_list_add [function] [call site] 00300
6 array_list_expand_internal [function] [call site] 00301
4 json_object_array_shrink [function] [call site] 00302
4 printbuf_reset [function] [call site] 00303
4 printbuf_memappend [function] [call site] 00304
4 strdup [call site] 00305
4 printbuf_memappend [function] [call site] 00306
4 json_tokener_validate_utf8 [function] [call site] 00307
4 printbuf_memappend [function] [call site] 00308
4 json_tokener_reset_level [function] [call site] 00309
4 json_object_object_add [function] [call site] 00310
5 json_object_object_add_ex [function] [call site] 00311
6 json_object_get_type [function] [call site] 00312
6 __assert_fail [call site] 00313
6 JC_OBJECT [function] [call site] 00314
6 lh_get_hash [function] [call site] 00315
6 JC_OBJECT [function] [call site] 00316
6 lh_table_lookup_entry_w_hash [function] [call site] 00317
6 strdup [call site] 00318
6 JC_OBJECT [function] [call site] 00319
6 lh_table_insert_w_hash [function] [call site] 00320
7 lh_table_resize [function] [call site] 00321
8 lh_table_new [function] [call site] 00322
8 lh_get_hash [function] [call site] 00323
8 lh_table_insert_w_hash [function] [call site] 00324
8 lh_table_free [function] [call site] 00325
6 lh_entry_v [function] [call site] 00326
6 json_object_put [function] [call site] 00327
6 lh_entry_set_val [function] [call site] 00328
4 uselocale [call site] 00329
4 json_object_get [function] [call site] 00330
4 json_tokener_reset_level [function] [call site] 00331
3 json_object_put [function] [call site] 00332
3 json_tokener_free [function] [call site] 00333
4 json_tokener_reset [function] [call site] 00334
4 printbuf_free [function] [call site] 00335
1 json_object_get_boolean [function] [call site] 00336
1 json_object_get_double [function] [call site] 00344
2 JC_DOUBLE_C [function] [call site] 00345
2 json_abort [function] [call site] 00349
2 JC_BOOL_C [function] [call site] 00350
2 get_string_component [function] [call site] 00351
2 localeconv [call site] 00352
2 strchr [call site] 00353
2 strlen [call site] 00354
2 __errno_location [call site] 00355
2 __errno_location [call site] 00356
2 strtod [call site] 00357
2 __errno_location [call site] 00358
2 __errno_location [call site] 00359
2 __errno_location [call site] 00360
2 __errno_location [call site] 00361
1 json_object_get_int [function] [call site] 00362
2 __errno_location [call site] 00363
2 get_string_component [function] [call site] 00365
2 json_parse_int64 [function] [call site] 00366
2 __errno_location [call site] 00367
2 __errno_location [call site] 00368
2 JC_DOUBLE_C [function] [call site] 00369
2 __errno_location [call site] 00370
2 __errno_location [call site] 00371
2 __errno_location [call site] 00372
2 JC_BOOL_C [function] [call site] 00373
1 json_object_get_int64 [function] [call site] 00374
2 __errno_location [call site] 00375
2 __errno_location [call site] 00377
2 json_abort [function] [call site] 00378
2 JC_DOUBLE_C [function] [call site] 00379
2 __errno_location [call site] 00380
2 JC_DOUBLE_C [function] [call site] 00381
2 __errno_location [call site] 00382
2 JC_DOUBLE_C [function] [call site] 00383
2 __errno_location [call site] 00384
2 JC_DOUBLE_C [function] [call site] 00385
2 JC_BOOL_C [function] [call site] 00386
2 get_string_component [function] [call site] 00387
2 json_parse_int64 [function] [call site] 00388
1 json_object_get_uint64 [function] [call site] 00389
2 __errno_location [call site] 00390
2 __errno_location [call site] 00392
2 json_abort [function] [call site] 00393
2 JC_DOUBLE_C [function] [call site] 00394
2 __errno_location [call site] 00395
2 JC_DOUBLE_C [function] [call site] 00396
2 __errno_location [call site] 00397
2 JC_DOUBLE_C [function] [call site] 00398
2 __errno_location [call site] 00399
2 JC_DOUBLE_C [function] [call site] 00400
2 JC_BOOL_C [function] [call site] 00401
2 get_string_component [function] [call site] 00402
2 json_parse_uint64 [function] [call site] 00403
1 json_object_get_string [function] [call site] 00404
2 get_string_component [function] [call site] 00405
2 json_object_to_json_string [function] [call site] 00406
3 json_object_to_json_string_ext [function] [call site] 00407
4 json_object_to_json_string_length [function] [call site] 00408
5 printbuf_new [function] [call site] 00409
5 printbuf_reset [function] [call site] 00410
1 json_object_get_string_len [function] [call site] 00411
2 JC_STRING_C [function] [call site] 00412
2 _json_object_get_string_len [function] [call site] 00413
1 json_object_get_object [function] [call site] 00414
1 json_object_get_array [function] [call site] 00415
2 JC_ARRAY_C [function] [call site] 00416
1 json_object_get_type [function] [call site] 00417
1 json_c_visit [function] [call site] 00418
2 _json_c_visit [function] [call site] 00419
3 fprintf [call site] 00420
3 json_object_get_type [function] [call site] 00421
3 json_object_get_object [function] [call site] 00422
3 lh_table_head [function] [call site] 00423
3 lh_entry_k [function] [call site] 00424
3 lh_entry_v [function] [call site] 00425
3 lh_entry_next [function] [call site] 00426
3 _json_c_visit [function] [call site] 00427
4 fprintf [call site] 00428
4 json_object_array_length [function] [call site] 00429
4 json_object_array_get_idx [function] [call site] 00430
4 _json_c_visit [function] [call site] 00431
5 fprintf [call site] 00432
5 json_object_get_type [function] [call site] 00433
5 fprintf [call site] 00434
5 fprintf [call site] 00435
1 emit_object(json_object*, int, json_object*, char const*, unsigned long*, void*) [function] [call site] 00436
1 json_object_set_int [function] [call site] 00437
2 json_object_set_int64 [function] [call site] 00438
1 json_object_set_int64 [function] [call site] 00441
1 json_object_set_uint64 [function] [call site] 00442
1 json_object_set_double [function] [call site] 00445
2 JC_DOUBLE [function] [call site] 00446
2 json_object_set_serializer [function] [call site] 00447
1 json_object_set_string [function] [call site] 00448
2 strlen [call site] 00449
2 _json_object_set_string_len [function] [call site] 00450
3 JC_STRING [function] [call site] 00451
3 JC_STRING [function] [call site] 00452
3 JC_STRING [function] [call site] 00453
3 get_string_component_mutable [function] [call site] 00454
3 JC_STRING [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 JC_STRING [function] [call site] 00459
1 json_object_set_boolean [function] [call site] 00460
1 json_object_set_string_len [function] [call site] 00462
2 _json_object_set_string_len [function] [call site] 00463
1 json_object_deep_copy [function] [call site] 00464
2 __errno_location [call site] 00465
2 json_object_deep_copy_recursive [function] [call site] 00466
3 __errno_location [call site] 00467
3 __assert_fail [call site] 00468
3 json_object_get_object [function] [call site] 00469
3 lh_table_head [function] [call site] 00470
3 lh_entry_k [function] [call site] 00471
3 lh_entry_v [function] [call site] 00472
3 json_object_deep_copy_recursive [function] [call site] 00473
4 json_object_put [function] [call site] 00474
4 json_object_object_add [function] [call site] 00475
4 json_object_put [function] [call site] 00476
4 lh_entry_next [function] [call site] 00477
4 json_object_array_length [function] [call site] 00478
4 json_object_array_get_idx [function] [call site] 00479
4 json_object_deep_copy_recursive [function] [call site] 00480
5 json_object_put [function] [call site] 00481
5 json_object_array_add [function] [call site] 00482
5 json_object_put [function] [call site] 00483
5 json_object_copy_serializer_data [function] [call site] 00484
6 __assert_fail [call site] 00485
6 strdup [call site] 00486
6 _json_c_set_last_err [function] [call site] 00487
7 vsnprintf [call site] 00488
6 _json_c_set_last_err [function] [call site] 00489
2 json_object_put [function] [call site] 00490
1 json_object_put [function] [call site] 00491
1 json_object_put [function] [call site] 00492