Fuzz introspector: fuzz_bufq
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
380 113 Curl_bufq_pass call site: 00113 append
14 2 LLVMFuzzerTestOneInput call site: 00002 allocate_template_buffer
12 99 bufq_slurpn call site: 00099 Curl_bufq_pass
10 72 Curl_bufq_read call site: 00072 Curl_bufq_slurp
10 498 Curl_bufq_skip call site: 00498 Curl_bufq_write
8 59 chunk_peek_at call site: 00059 Curl_bufq_read
7 49 chunk_peek call site: 00049 Curl_bufq_peek_at
5 514 chunk_append call site: 00514 Curl_bufq_free
4 27 Curl_bufq_init call site: 00027 Curl_bufq_is_empty
4 35 Curl_bufq_len call site: 00035 Curl_bufq_peek
2 24 bufq_init call site: 00024 FV_PRINTF
2 32 Curl_bufq_is_empty call site: 00032 Curl_bufq_len

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 fuzz_handle_bufq [function] [call site] 00002
2 allocate_template_buffer [function] [call site] 00004
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00009
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00010
2 FuzzedDataProvider*::ConsumeBool [function] [call site] 00011
2 FuzzedDataProvider*::ConsumeBool [function] [call site] 00012
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00013
2 FV_PRINTF [function] [call site] 00014
2 FV_PRINTF [function] [call site] 00015
2 Curl_bufcp_init [function] [call site] 00016
3 DEBUGASSERT [function] [call site] 00017
3 DEBUGASSERT [function] [call site] 00018
2 Curl_bufq_initp [function] [call site] 00020
2 FV_PRINTF [function] [call site] 00025
2 Curl_bufq_init [function] [call site] 00026
3 bufq_init [function] [call site] 00027
2 FuzzedDataProvider*::remaining_bytes [function] [call site] 00028
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00029
2 Curl_bufq_is_empty [function] [call site] 00031
3 chunk_is_empty [function] [call site] 00032
2 Curl_bufq_len [function] [call site] 00034
3 chunk_len [function] [call site] 00035
2 FV_PRINTF [function] [call site] 00036
2 Curl_bufq_reset [function] [call site] 00037
2 FV_PRINTF [function] [call site] 00038
2 Curl_bufq_peek [function] [call site] 00039
3 chunk_is_empty [function] [call site] 00040
3 prune_head [function] [call site] 00041
4 chunk_is_empty [function] [call site] 00042
4 bufcp_put [function] [call site] 00043
5 curlx_free [function] [call site] 00044
5 chunk_reset [function] [call site] 00045
4 curlx_free [function] [call site] 00046
3 chunk_is_empty [function] [call site] 00047
3 chunk_peek [function] [call site] 00048
4 DEBUGASSERT [function] [call site] 00049
2 compute_buffer [function] [call site] 00050
2 FV_PRINTF [function] [call site] 00053
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00054
2 FV_PRINTF [function] [call site] 00055
2 Curl_bufq_peek_at [function] [call site] 00056
3 chunk_len [function] [call site] 00057
3 chunk_peek_at [function] [call site] 00058
4 DEBUGASSERT [function] [call site] 00059
2 compute_buffer [function] [call site] 00060
2 FV_PRINTF [function] [call site] 00063
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00064
2 FV_PRINTF [function] [call site] 00065
2 Curl_bufq_read [function] [call site] 00067
2 FV_PRINTF [function] [call site] 00073
2 compute_buffer [function] [call site] 00075
2 FV_PRINTF [function] [call site] 00078
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00080
2 FV_PRINTF [function] [call site] 00081
2 Curl_bufq_slurp [function] [call site] 00082
3 bufq_slurpn [function] [call site] 00083
4 Curl_bufq_sipn [function] [call site] 00084
5 get_non_full_tail [function] [call site] 00085
6 chunk_is_full [function] [call site] 00086
6 get_spare [function] [call site] 00087
7 chunk_reset [function] [call site] 00088
7 bufcp_take [function] [call site] 00089
8 chunk_reset [function] [call site] 00090
8 curlx_calloc [function] [call site] 00091
7 curlx_calloc [function] [call site] 00092
6 DEBUGASSERT [function] [call site] 00093
5 chunk_slurpn [function] [call site] 00094
6 DEBUGASSERT [function] [call site] 00095
6 DEBUGASSERT [function] [call site] 00097
4 DEBUGASSERT [function] [call site] 00098
4 chunk_is_full [function] [call site] 00099
2 FV_PRINTF [function] [call site] 00100
2 FV_PRINTF [function] [call site] 00101
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00103
2 FV_PRINTF [function] [call site] 00104
2 Curl_bufq_sipn [function] [call site] 00105
2 FV_PRINTF [function] [call site] 00106
2 FV_PRINTF [function] [call site] 00108
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00109
2 FV_PRINTF [function] [call site] 00110
2 Curl_bufq_pass [function] [call site] 00111
3 Curl_bufq_peek [function] [call site] 00112
3 writer [function] [call site] 00113
4 append [function] [call site] 00114
5 curl_url [function] [call site] 00115
6 curlx_calloc [function] [call site] 00116
5 curl_url_set [function] [call site] 00117
6 urlset_clear [function] [call site] 00118
7 free_urlhandle [function] [call site] 00119
8 curlx_free [function] [call site] 00120
8 curlx_free [function] [call site] 00121
8 curlx_strzero [function] [call site] 00122
9 curlx_memzero_low [function] [call site] 00123
8 curlx_free [function] [call site] 00125
8 curlx_free [function] [call site] 00126
8 curlx_free [function] [call site] 00127
8 curlx_free [function] [call site] 00128
8 curlx_free [function] [call site] 00129
8 curlx_free [function] [call site] 00130
8 curlx_free [function] [call site] 00131
7 curlx_safefree [function] [call site] 00133
7 curlx_safefree [function] [call site] 00134
7 curlx_strzero [function] [call site] 00135
7 curlx_safefree [function] [call site] 00136
7 curlx_safefree [function] [call site] 00137
7 curlx_safefree [function] [call site] 00138
7 curlx_safefree [function] [call site] 00139
7 curlx_safefree [function] [call site] 00140
7 curlx_safefree [function] [call site] 00141
7 curlx_safefree [function] [call site] 00142
6 set_url_scheme [function] [call site] 00144
7 Curl_get_scheme [function] [call site] 00146
8 Curl_getn_scheme [function] [call site] 00147
6 curlx_safefree [function] [call site] 00151
6 set_url_port [function] [call site] 00152
7 curlx_str_number [function] [call site] 00154
8 str_num_base [function] [call site] 00155
9 DEBUGASSERT [function] [call site] 00156
9 DEBUGASSERT [function] [call site] 00157
9 DEBUGASSERT [function] [call site] 00158
9 valid_digit [function] [call site] 00159
9 curlx_hexval [function] [call site] 00160
9 valid_digit [function] [call site] 00161
9 curlx_hexval [function] [call site] 00162
9 valid_digit [function] [call site] 00163
6 set_url [function] [call site] 00164
7 curl_url_set [function] [call site] 00166
7 curl_url_set [function] [call site] 00167
7 curl_mfprintf [function] [call site] 00168
8 formatf [function] [call site] 00170
9 parsefmt [function] [call site] 00171
10 dollarstring [function] [call site] 00173
11 curlx_str_number [function] [call site] 00174
11 curlx_str_single [function] [call site] 00175
12 DEBUGASSERT [function] [call site] 00176
10 parse_flags [function] [call site] 00177
11 dollarstring [function] [call site] 00178
11 curlx_str_number [function] [call site] 00179
11 FALLTHROUGH [function] [call site] 00180
11 curlx_str_number [function] [call site] 00181
11 dollarstring [function] [call site] 00182
10 parse_conversion [function] [call site] 00183
10 is_arg_used [function] [call site] 00184
10 mark_arg_used [function] [call site] 00185
10 is_arg_used [function] [call site] 00186
10 mark_arg_used [function] [call site] 00187
10 mark_arg_used [function] [call site] 00188
10 is_arg_used [function] [call site] 00189
10 DEBUGASSERT [function] [call site] 00200
9 out_number [function] [call site] 00217
9 out_pointer [function] [call site] 00227
10 out_number [function] [call site] 00228
10 CURL_CSTRLEN [function] [call site] 00229
9 out_double [function] [call site] 00233
10 curl_msnprintf [function] [call site] 00235
11 va_start [function] [call site] 00236
11 curl_mvsnprintf [function] [call site] 00237
12 DEBUGASSERT [function] [call site] 00239
10 curl_msnprintf [function] [call site] 00241
10 curlx_win32_snprintf [function] [call site] 00242
10 snprintf [function] [call site] 00246
10 DEBUGASSERT [function] [call site] 00247
7 curl_url_strerror [function] [call site] 00251
7 curl_url_get [function] [call site] 00252
8 Curl_get_scheme [function] [call site] 00253
8 curl_msnprintf [function] [call site] 00254
8 Curl_get_scheme [function] [call site] 00255
8 curl_msnprintf [function] [call site] 00256
8 urlget_url [function] [call site] 00257
9 curl_strequal [function] [call site] 00258
10 casecompare [function] [call site] 00259
11 Curl_raw_toupper [function] [call site] 00260
11 Curl_raw_toupper [function] [call site] 00261
9 file_url [function] [call site] 00262
10 curl_maprintf [function] [call site] 00263
11 va_start [function] [call site] 00264
11 curl_mvaprintf [function] [call site] 00265
12 curlx_dyn_init [function] [call site] 00266
13 DEBUGASSERT [function] [call site] 00267
13 DEBUGASSERT [function] [call site] 00268
13 DEBUGASSERT [function] [call site] 00269
12 curlx_dyn_free [function] [call site] 00271
13 DEBUGASSERT [function] [call site] 00272
13 DEBUGASSERT [function] [call site] 00273
13 curlx_safefree [function] [call site] 00274
12 curlx_dyn_len [function] [call site] 00275
13 DEBUGASSERT [function] [call site] 00276
13 DEBUGASSERT [function] [call site] 00277
13 DEBUGASSERT [function] [call site] 00278
12 curlx_dyn_ptr [function] [call site] 00279
13 DEBUGASSERT [function] [call site] 00280
13 DEBUGASSERT [function] [call site] 00281
13 DEBUGASSERT [function] [call site] 00282
12 curlx_strdup [function] [call site] 00283
9 curl_msnprintf [function] [call site] 00285
9 Curl_get_scheme [function] [call site] 00286
9 curl_msnprintf [function] [call site] 00287
9 curlx_dyn_init [function] [call site] 00289
9 curlx_dyn_addf [function] [call site] 00290
10 DEBUGASSERT [function] [call site] 00291
10 DEBUGASSERT [function] [call site] 00292
10 DEBUGASSERT [function] [call site] 00293
10 DEBUGASSERT [function] [call site] 00294
10 va_start [function] [call site] 00296
10 curlx_dyn_vaddf [function] [call site] 00297
11 DEBUGASSERT [function] [call site] 00298
11 DEBUGASSERT [function] [call site] 00299
11 DEBUGASSERT [function] [call site] 00300
11 DEBUGASSERT [function] [call site] 00301
11 curlx_dyn_vprintf [function] [call site] 00302
12 curlx_dyn_free [function] [call site] 00304
11 curl_mvaprintf [function] [call site] 00305
11 dyn_nappend [function] [call site] 00306
12 DEBUGASSERT [function] [call site] 00307
12 DEBUGASSERT [function] [call site] 00308
12 DEBUGASSERT [function] [call site] 00309
12 DEBUGASSERT [function] [call site] 00310
12 DEBUGASSERT [function] [call site] 00311
12 DEBUGASSERT [function] [call site] 00312
12 curlx_dyn_free [function] [call site] 00313
12 DEBUGASSERT [function] [call site] 00314
12 curlx_realloc [function] [call site] 00315
12 curlx_dyn_free [function] [call site] 00316
11 curl_free [function] [call site] 00319
12 curlx_free [function] [call site] 00320
11 curlx_dyn_free [function] [call site] 00321
9 curlx_dyn_ptr [function] [call site] 00323
9 curl_easy_escape [function] [call site] 00324
10 curlx_strdup [function] [call site] 00326
10 curlx_dyn_init [function] [call site] 00327
10 ISUNRESERVED [function] [call site] 00328
10 curlx_dyn_addn [function] [call site] 00329
11 DEBUGASSERT [function] [call site] 00330
11 DEBUGASSERT [function] [call site] 00331
11 DEBUGASSERT [function] [call site] 00332
11 dyn_nappend [function] [call site] 00333
10 Curl_hexbyte [function] [call site] 00334
10 curlx_dyn_addn [function] [call site] 00335
10 curlx_dyn_ptr [function] [call site] 00336
9 Curl_is_ASCII_name [function] [call site] 00337
10 Curl_is_ASCII_str [function] [call site] 00339
9 host_decode [function] [call site] 00340
9 Curl_is_ASCII_name [function] [call site] 00341
9 host_encode [function] [call site] 00342
9 curl_msnprintf [function] [call site] 00343
9 curl_maprintf [function] [call site] 00344
9 curlx_free [function] [call site] 00345
8 urlget_format [function] [call site] 00346
9 curlx_memdup0 [function] [call site] 00348
10 curlx_malloc [function] [call site] 00349
10 DEBUGASSERT [function] [call site] 00350
9 Curl_urldecode [function] [call site] 00352
10 DEBUGASSERT [function] [call site] 00353
10 DEBUGASSERT [function] [call site] 00354
10 curlx_malloc [function] [call site] 00356
10 ISXDIGIT [function] [call site] 00357
10 ISXDIGIT [function] [call site] 00358
10 curlx_hexval [function] [call site] 00359
10 curlx_hexval [function] [call site] 00360
10 curlx_safefree [function] [call site] 00361
9 curlx_free [function] [call site] 00362
9 curlx_dyn_init [function] [call site] 00363
9 urlencode_str [function] [call site] 00364
10 DEBUGASSERT [function] [call site] 00365
10 find_host_sep [function] [call site] 00366
10 curlx_dyn_addn [function] [call site] 00368
10 curlx_dyn_addn [function] [call site] 00369
10 curlx_dyn_addn [function] [call site] 00370
10 Curl_hexbyte [function] [call site] 00371
10 curlx_dyn_addn [function] [call site] 00372
10 ISXDIGIT [function] [call site] 00373
10 ISXDIGIT [function] [call site] 00374
10 curlx_hexval [function] [call site] 00377
10 curlx_hexval [function] [call site] 00378
10 Curl_hexbyte [function] [call site] 00379
10 curlx_dyn_addn [function] [call site] 00380
10 curlx_dyn_addn [function] [call site] 00381
9 curlx_free [function] [call site] 00383
9 curlx_dyn_ptr [function] [call site] 00384
9 Curl_is_ASCII_name [function] [call site] 00385
9 host_decode [function] [call site] 00386
9 curlx_free [function] [call site] 00387
9 Curl_is_ASCII_name [function] [call site] 00388
9 host_encode [function] [call site] 00389
9 curlx_free [function] [call site] 00390
7 curl_mfprintf [function] [call site] 00391
7 curl_url_strerror [function] [call site] 00392
7 curl_free [function] [call site] 00396
7 curl_mfprintf [function] [call site] 00397
7 curl_url_cleanup [function] [call site] 00398
8 free_urlhandle [function] [call site] 00399
8 curlx_free [function] [call site] 00400
6 DEBUGASSERT [function] [call site] 00401
6 curlx_dyn_init [function] [call site] 00402
6 curlx_dyn_addn [function] [call site] 00403
6 url_encode_part [function] [call site] 00405
7 curlx_dyn_addn [function] [call site] 00406
7 ISUNRESERVED [function] [call site] 00407
7 allowed_in_path [function] [call site] 00408
7 curlx_dyn_addn [function] [call site] 00409
7 Curl_hexbyte [function] [call site] 00410
7 curlx_dyn_addn [function] [call site] 00411
6 url_uppercasehex_part [function] [call site] 00413
7 curlx_dyn_add [function] [call site] 00414
8 DEBUGASSERT [function] [call site] 00415
8 DEBUGASSERT [function] [call site] 00416
8 DEBUGASSERT [function] [call site] 00417
8 DEBUGASSERT [function] [call site] 00418
8 dyn_nappend [function] [call site] 00420
7 curlx_dyn_ptr [function] [call site] 00422
7 Curl_raw_toupper [function] [call site] 00427
7 Curl_raw_toupper [function] [call site] 00428
6 curlx_dyn_ptr [function] [call site] 00429
6 url_append_query [function] [call site] 00430
7 curlx_dyn_ptr [function] [call site] 00432
7 curlx_dyn_init [function] [call site] 00433
7 curlx_dyn_addn [function] [call site] 00434
7 curlx_dyn_addn [function] [call site] 00435
7 curlx_dyn_add [function] [call site] 00436
7 curlx_dyn_free [function] [call site] 00437
7 curlx_free [function] [call site] 00438
7 curlx_dyn_ptr [function] [call site] 00439
7 curlx_dyn_free [function] [call site] 00440
7 curlx_free [function] [call site] 00442
7 curlx_dyn_ptr [function] [call site] 00443
6 url_sethost [function] [call site] 00444
7 curlx_dyn_len [function] [call site] 00445
7 curlx_dyn_ptr [function] [call site] 00446
7 Curl_urldecode [function] [call site] 00447
7 hostname_check [function] [call site] 00448
8 DEBUGASSERT [function] [call site] 00449
8 ipv6_parse [function] [call site] 00450
9 DEBUGASSERT [function] [call site] 00451
9 curlx_strdup [function] [call site] 00454
9 curlx_inet_pton [function] [call site] 00455
9 curlx_inet_ntop [function] [call site] 00465
10 inet_ntop4 [function] [call site] 00466
11 DEBUGASSERT [function] [call site] 00467
11 SNPRINTF [function] [call site] 00468
11 curlx_strcopy [function] [call site] 00470
12 DEBUGASSERT [function] [call site] 00471
10 inet_ntop6 [function] [call site] 00473
11 inet_ntop4 [function] [call site] 00475
11 curlx_strcopy [function] [call site] 00477
7 curlx_free [function] [call site] 00480
7 hostname_check [function] [call site] 00481
7 curlx_dyn_free [function] [call site] 00482
6 curlx_strzero [function] [call site] 00483
6 curlx_free [function] [call site] 00484
6 CURL_UNCONST [function] [call site] 00485
5 curl_url_set [function] [call site] 00486
5 curl_mfprintf [function] [call site] 00487
5 curl_url_get [function] [call site] 00488
5 curl_mfprintf [function] [call site] 00489
5 curl_url_strerror [function] [call site] 00490
5 curl_free [function] [call site] 00492
5 curl_url_cleanup [function] [call site] 00493
3 Curl_bufq_skip [function] [call site] 00494
4 chunk_skip [function] [call site] 00495
4 prune_head [function] [call site] 00498
2 FV_PRINTF [function] [call site] 00499
2 FV_PRINTF [function] [call site] 00500
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00502
2 FV_PRINTF [function] [call site] 00503
2 Curl_bufq_skip [function] [call site] 00504
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00505
2 FV_PRINTF [function] [call site] 00506
2 compute_buffer [function] [call site] 00507
2 Curl_bufq_write [function] [call site] 00508
3 DEBUGASSERT [function] [call site] 00509
3 get_non_full_tail [function] [call site] 00510
2 FV_PRINTF [function] [call site] 00515
2 FV_PRINTF [function] [call site] 00517
2 Curl_bufq_free [function] [call site] 00519
3 chunk_list_free [function] [call site] 00520
4 curlx_free [function] [call site] 00521
3 chunk_list_free [function] [call site] 00522
2 Curl_bufcp_free [function] [call site] 00523
3 chunk_list_free [function] [call site] 00524