Fuzz introspector: curl_fuzzer/fuzz_bufq.cc
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
16 0 EP call site: 00000 fuzz_handle_bufq
13 428 ipv6_parse call site: 00428 curlx_inet_ntop
12 99 bufq_slurpn call site: 00099 Curl_bufq_pass
12 366 urlget_format call site: 00366 checkurl
12 411 curl_url_set call site: 00411 hostname_check
10 72 Curl_bufq_read call site: 00072 Curl_bufq_slurp
10 182 curlx_str_single call site: 00182 dollarstring
10 226 out_string call site: 00226 out_double
10 461 Curl_bufq_skip call site: 00461 Curl_bufq_write
8 59 chunk_peek_at call site: 00059 Curl_bufq_read
8 210 out_number call site: 00210 OUTCHAR
8 402 curlx_dyn_add call site: 00402 curlx_dyn_ptr

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_free [function] [call site] 00122
8 curlx_free [function] [call site] 00123
8 curlx_free [function] [call site] 00124
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
7 Curl_safefree [function] [call site] 00131
7 Curl_safefree [function] [call site] 00132
7 Curl_safefree [function] [call site] 00133
7 Curl_safefree [function] [call site] 00134
7 Curl_safefree [function] [call site] 00135
7 Curl_safefree [function] [call site] 00136
7 Curl_safefree [function] [call site] 00137
7 Curl_safefree [function] [call site] 00138
7 Curl_safefree [function] [call site] 00139
7 Curl_safefree [function] [call site] 00140
6 set_url_scheme [function] [call site] 00142
7 Curl_get_scheme [function] [call site] 00144
8 Curl_getn_scheme [function] [call site] 00145
9 Curl_raw_tolower [function] [call site] 00146
9 curl_strnequal [function] [call site] 00147
10 ncasecompare [function] [call site] 00148
11 Curl_raw_toupper [function] [call site] 00149
11 Curl_raw_toupper [function] [call site] 00150
11 Curl_raw_toupper [function] [call site] 00151
11 Curl_raw_toupper [function] [call site] 00152
6 Curl_safefree [function] [call site] 00156
6 set_url_port [function] [call site] 00157
7 curlx_str_number [function] [call site] 00159
8 str_num_base [function] [call site] 00160
9 DEBUGASSERT [function] [call site] 00161
9 DEBUGASSERT [function] [call site] 00162
9 DEBUGASSERT [function] [call site] 00163
9 valid_digit [function] [call site] 00164
9 curlx_hexval [function] [call site] 00165
9 valid_digit [function] [call site] 00166
9 curlx_hexval [function] [call site] 00167
9 valid_digit [function] [call site] 00168
7 curl_maprintf [function] [call site] 00169
8 curl_mvaprintf [function] [call site] 00171
9 curlx_dyn_init [function] [call site] 00172
10 DEBUGASSERT [function] [call site] 00173
10 DEBUGASSERT [function] [call site] 00174
10 DEBUGASSERT [function] [call site] 00175
9 formatf [function] [call site] 00176
10 parsefmt [function] [call site] 00177
11 dollarstring [function] [call site] 00179
12 curlx_str_number [function] [call site] 00180
12 curlx_str_single [function] [call site] 00181
13 DEBUGASSERT [function] [call site] 00182
11 dollarstring [function] [call site] 00183
11 curlx_str_number [function] [call site] 00184
11 FALLTHROUGH [function] [call site] 00185
11 curlx_str_number [function] [call site] 00186
11 dollarstring [function] [call site] 00187
11 FALLTHROUGH [function] [call site] 00188
11 is_arg_used [function] [call site] 00189
11 mark_arg_used [function] [call site] 00190
11 is_arg_used [function] [call site] 00191
11 mark_arg_used [function] [call site] 00192
11 mark_arg_used [function] [call site] 00193
11 is_arg_used [function] [call site] 00194
11 DEBUGASSERT [function] [call site] 00204
10 out_number [function] [call site] 00221
10 out_double [function] [call site] 00234
11 curl_msnprintf [function] [call site] 00236
12 va_start [function] [call site] 00237
12 curl_mvsnprintf [function] [call site] 00238
13 DEBUGASSERT [function] [call site] 00240
11 curl_msnprintf [function] [call site] 00242
11 DEBUGASSERT [function] [call site] 00243
9 curlx_dyn_free [function] [call site] 00246
10 DEBUGASSERT [function] [call site] 00247
10 DEBUGASSERT [function] [call site] 00248
10 Curl_safefree [function] [call site] 00249
9 curlx_dyn_len [function] [call site] 00250
10 DEBUGASSERT [function] [call site] 00251
10 DEBUGASSERT [function] [call site] 00252
10 DEBUGASSERT [function] [call site] 00253
9 curlx_dyn_ptr [function] [call site] 00254
10 DEBUGASSERT [function] [call site] 00255
10 DEBUGASSERT [function] [call site] 00256
10 DEBUGASSERT [function] [call site] 00257
9 curlx_strdup [function] [call site] 00258
7 curlx_free [function] [call site] 00260
6 set_url [function] [call site] 00261
7 curl_url_set [function] [call site] 00263
7 curl_url_set [function] [call site] 00264
7 curl_url_strerror [function] [call site] 00269
7 curl_url_get [function] [call site] 00270
8 Curl_get_scheme [function] [call site] 00271
8 curl_msnprintf [function] [call site] 00272
8 Curl_get_scheme [function] [call site] 00273
8 urlget_url [function] [call site] 00274
9 curl_strequal [function] [call site] 00275
10 casecompare [function] [call site] 00276
11 Curl_raw_toupper [function] [call site] 00277
11 Curl_raw_toupper [function] [call site] 00278
9 curl_maprintf [function] [call site] 00279
9 Curl_get_scheme [function] [call site] 00280
9 curl_msnprintf [function] [call site] 00281
9 curlx_dyn_init [function] [call site] 00283
9 curlx_dyn_addf [function] [call site] 00284
10 DEBUGASSERT [function] [call site] 00285
10 DEBUGASSERT [function] [call site] 00286
10 DEBUGASSERT [function] [call site] 00287
10 DEBUGASSERT [function] [call site] 00288
10 va_start [function] [call site] 00290
10 curlx_dyn_vaddf [function] [call site] 00291
11 DEBUGASSERT [function] [call site] 00292
11 DEBUGASSERT [function] [call site] 00293
11 DEBUGASSERT [function] [call site] 00294
11 DEBUGASSERT [function] [call site] 00295
11 curlx_dyn_vprintf [function] [call site] 00296
12 curlx_dyn_free [function] [call site] 00298
11 curl_mvaprintf [function] [call site] 00299
11 dyn_nappend [function] [call site] 00300
12 DEBUGASSERT [function] [call site] 00301
12 DEBUGASSERT [function] [call site] 00302
12 DEBUGASSERT [function] [call site] 00303
12 DEBUGASSERT [function] [call site] 00304
12 DEBUGASSERT [function] [call site] 00305
12 DEBUGASSERT [function] [call site] 00306
12 curlx_dyn_free [function] [call site] 00307
12 DEBUGASSERT [function] [call site] 00308
12 curlx_realloc [function] [call site] 00309
12 curlx_dyn_free [function] [call site] 00310
11 curlx_free [function] [call site] 00313
11 curlx_dyn_free [function] [call site] 00314
9 curlx_dyn_ptr [function] [call site] 00316
9 curl_easy_escape [function] [call site] 00317
10 curlx_strdup [function] [call site] 00319
10 curlx_dyn_init [function] [call site] 00320
10 ISUNRESERVED [function] [call site] 00321
10 curlx_dyn_addn [function] [call site] 00322
11 DEBUGASSERT [function] [call site] 00323
11 DEBUGASSERT [function] [call site] 00324
11 DEBUGASSERT [function] [call site] 00325
11 dyn_nappend [function] [call site] 00326
10 Curl_hexbyte [function] [call site] 00327
10 curlx_dyn_addn [function] [call site] 00328
10 curlx_dyn_ptr [function] [call site] 00329
9 Curl_is_ASCII_name [function] [call site] 00330
9 host_decode [function] [call site] 00331
9 Curl_is_ASCII_name [function] [call site] 00332
9 host_encode [function] [call site] 00333
9 curl_msnprintf [function] [call site] 00334
9 curl_maprintf [function] [call site] 00335
9 curlx_free [function] [call site] 00336
8 urlget_format [function] [call site] 00337
9 Curl_memdup0 [function] [call site] 00339
10 curlx_malloc [function] [call site] 00340
10 DEBUGASSERT [function] [call site] 00341
9 Curl_urldecode [function] [call site] 00343
10 DEBUGASSERT [function] [call site] 00344
10 DEBUGASSERT [function] [call site] 00345
10 curlx_malloc [function] [call site] 00347
10 ISXDIGIT [function] [call site] 00348
10 ISXDIGIT [function] [call site] 00349
10 curlx_hexval [function] [call site] 00350
10 curlx_hexval [function] [call site] 00351
10 Curl_safefree [function] [call site] 00352
9 curlx_free [function] [call site] 00353
9 curlx_dyn_init [function] [call site] 00354
9 urlencode_str [function] [call site] 00355
10 find_host_sep [function] [call site] 00356
10 curlx_dyn_addn [function] [call site] 00358
10 curlx_dyn_addn [function] [call site] 00359
10 curlx_dyn_addn [function] [call site] 00360
10 Curl_hexbyte [function] [call site] 00361
10 curlx_dyn_addn [function] [call site] 00362
10 curlx_dyn_addn [function] [call site] 00363
9 curlx_free [function] [call site] 00365
9 curlx_dyn_ptr [function] [call site] 00366
9 Curl_is_ASCII_name [function] [call site] 00367
9 host_decode [function] [call site] 00368
9 curlx_free [function] [call site] 00369
9 Curl_is_ASCII_name [function] [call site] 00370
9 host_encode [function] [call site] 00371
9 curlx_free [function] [call site] 00372
7 curl_mfprintf [function] [call site] 00373
7 curl_url_strerror [function] [call site] 00374
7 curl_free [function] [call site] 00378
8 curlx_free [function] [call site] 00379
7 curl_mfprintf [function] [call site] 00380
7 curl_url_cleanup [function] [call site] 00381
8 free_urlhandle [function] [call site] 00382
8 curlx_free [function] [call site] 00383
6 DEBUGASSERT [function] [call site] 00384
6 curlx_dyn_init [function] [call site] 00385
6 curlx_dyn_addn [function] [call site] 00386
6 curlx_dyn_addn [function] [call site] 00388
6 ISUNRESERVED [function] [call site] 00389
6 allowed_in_path [function] [call site] 00390
6 curlx_dyn_addn [function] [call site] 00391
6 Curl_hexbyte [function] [call site] 00393
6 curlx_dyn_addn [function] [call site] 00394
6 curlx_dyn_add [function] [call site] 00396
7 DEBUGASSERT [function] [call site] 00397
7 DEBUGASSERT [function] [call site] 00398
7 DEBUGASSERT [function] [call site] 00399
7 DEBUGASSERT [function] [call site] 00400
7 dyn_nappend [function] [call site] 00402
6 curlx_dyn_ptr [function] [call site] 00404
6 Curl_raw_tolower [function] [call site] 00409
6 Curl_raw_tolower [function] [call site] 00410
6 curlx_dyn_ptr [function] [call site] 00411
6 curlx_dyn_init [function] [call site] 00413
6 curlx_dyn_addn [function] [call site] 00414
6 curlx_dyn_addn [function] [call site] 00415
6 curlx_dyn_add [function] [call site] 00416
6 curlx_dyn_free [function] [call site] 00417
6 curlx_free [function] [call site] 00418
6 curlx_dyn_ptr [function] [call site] 00419
6 curlx_dyn_free [function] [call site] 00420
6 curlx_dyn_len [function] [call site] 00421
6 Curl_urldecode [function] [call site] 00422
6 hostname_check [function] [call site] 00423
6 curlx_free [function] [call site] 00443
6 hostname_check [function] [call site] 00444
6 CURL_UNCONST [function] [call site] 00445
6 curlx_dyn_free [function] [call site] 00446
6 curlx_free [function] [call site] 00447
6 CURL_UNCONST [function] [call site] 00448
5 curl_url_set [function] [call site] 00449
5 curl_mfprintf [function] [call site] 00450
5 curl_url_get [function] [call site] 00451
5 curl_mfprintf [function] [call site] 00452
5 curl_url_strerror [function] [call site] 00453
5 curl_free [function] [call site] 00455
5 curl_url_cleanup [function] [call site] 00456
3 Curl_bufq_skip [function] [call site] 00457
4 chunk_skip [function] [call site] 00458
4 prune_head [function] [call site] 00461
2 FV_PRINTF [function] [call site] 00462
2 FV_PRINTF [function] [call site] 00463
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00465
2 FV_PRINTF [function] [call site] 00466
2 Curl_bufq_skip [function] [call site] 00467
2 FuzzedDataProvider*::ConsumeIntegralInRange [function] [call site] 00468
2 FV_PRINTF [function] [call site] 00469
2 compute_buffer [function] [call site] 00470
2 Curl_bufq_write [function] [call site] 00471
3 DEBUGASSERT [function] [call site] 00472
3 get_non_full_tail [function] [call site] 00473
2 FV_PRINTF [function] [call site] 00478
2 FV_PRINTF [function] [call site] 00480
2 Curl_bufq_free [function] [call site] 00482
3 chunk_list_free [function] [call site] 00483
4 curlx_free [function] [call site] 00484
3 chunk_list_free [function] [call site] 00485
2 Curl_bufcp_free [function] [call site] 00486
3 chunk_list_free [function] [call site] 00487