Fuzz introspector: fuzz_url
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
51 302 curl_url_cleanup call site: 00302 url_sethost
42 258 Curl_urldecode call site: 00258 checkurl
28 219 curlx_dyn_vprintf call site: 00219 curl_mvaprintf
20 134 curl_mvsnprintf call site: 00134 curl_url_get
19 112 formatf call site: 00112 out_double
12 403 ipv4_normalize call site: 00403 ipv4_normalize
11 19 free_urlhandle call site: 00019 curlx_strzero
8 156 urlget_url call site: 00156 file_url
8 197 curlx_dyn_ptr call site: 00197 curlx_dyn_addf
7 53 curl_url_set call site: 00053 curl_url_set
7 102 out_number call site: 00102 stream_pad
6 36 Curl_get_scheme call site: 00036 set_url_port

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 curl_url [function] [call site] 00001
2 curlx_calloc [function] [call site] 00002
1 malloc [function] [call site] 00003
1 memcpy [function] [call site] 00004
1 curl_url_set [function] [call site] 00005
2 urlset_clear [function] [call site] 00006
3 free_urlhandle [function] [call site] 00007
4 curlx_free [function] [call site] 00008
4 curlx_free [function] [call site] 00009
4 curlx_strzero [function] [call site] 00010
5 curlx_memzero_low [function] [call site] 00011
5 strlen [function] [call site] 00012
4 curlx_free [function] [call site] 00013
4 curlx_free [function] [call site] 00014
4 curlx_free [function] [call site] 00015
4 curlx_free [function] [call site] 00016
4 curlx_free [function] [call site] 00017
4 curlx_free [function] [call site] 00018
4 curlx_free [function] [call site] 00019
3 memset [function] [call site] 00020
3 curlx_safefree [function] [call site] 00021
3 curlx_safefree [function] [call site] 00022
3 curlx_strzero [function] [call site] 00023
3 curlx_safefree [function] [call site] 00024
3 curlx_safefree [function] [call site] 00025
3 curlx_safefree [function] [call site] 00026
3 curlx_safefree [function] [call site] 00027
3 curlx_safefree [function] [call site] 00028
3 curlx_safefree [function] [call site] 00029
3 curlx_safefree [function] [call site] 00030
2 strlen [function] [call site] 00031
2 set_url_scheme [function] [call site] 00032
3 strlen [function] [call site] 00033
3 Curl_get_scheme [function] [call site] 00034
4 Curl_getn_scheme [function] [call site] 00035
4 strlen [function] [call site] 00036
3 ISALPHA [function] [call site] 00037
3 ISALNUM [function] [call site] 00038
2 curlx_safefree [function] [call site] 00039
2 set_url_port [function] [call site] 00040
3 ISDIGIT [function] [call site] 00041
3 curlx_str_number [function] [call site] 00042
4 str_num_base [function] [call site] 00043
5 DEBUGASSERT [function] [call site] 00044
5 DEBUGASSERT [function] [call site] 00045
5 DEBUGASSERT [function] [call site] 00046
5 valid_digit [function] [call site] 00047
5 curlx_hexval [function] [call site] 00048
5 valid_digit [function] [call site] 00049
5 valid_digit [function] [call site] 00050
5 curlx_hexval [function] [call site] 00051
5 curlx_hexval [function] [call site] 00052
2 set_url [function] [call site] 00053
3 curl_url [function] [call site] 00054
3 curl_url_set [function] [call site] 00055
3 curl_url_set [function] [call site] 00056
3 curl_mfprintf [function] [call site] 00057
4 va_start [function] [call site] 00058
4 curl_mvfprintf [function] [call site] 00059
5 formatf [function] [call site] 00060
6 parsefmt [function] [call site] 00061
7 memset [function] [call site] 00062
7 dollarstring [function] [call site] 00063
8 curlx_str_number [function] [call site] 00064
8 curlx_str_single [function] [call site] 00065
9 DEBUGASSERT [function] [call site] 00066
7 parse_flags [function] [call site] 00067
8 dollarstring [function] [call site] 00068
8 curlx_str_number [function] [call site] 00069
8 FALLTHROUGH [function] [call site] 00070
8 curlx_str_number [function] [call site] 00071
8 dollarstring [function] [call site] 00072
7 parse_conversion [function] [call site] 00073
7 is_arg_used [function] [call site] 00074
7 mark_arg_used [function] [call site] 00075
7 is_arg_used [function] [call site] 00076
7 mark_arg_used [function] [call site] 00077
7 mark_arg_used [function] [call site] 00078
7 is_arg_used [function] [call site] 00079
7 va_arg [function] [call site] 00080
7 va_arg [function] [call site] 00081
7 va_arg [function] [call site] 00082
7 va_arg [function] [call site] 00083
7 va_arg [function] [call site] 00084
7 va_arg [function] [call site] 00085
7 va_arg [function] [call site] 00086
7 va_arg [function] [call site] 00087
7 va_arg [function] [call site] 00088
7 va_arg [function] [call site] 00089
7 DEBUGASSERT [function] [call site] 00090
6 stream_zrun [function] [call site] 00091
7 stream_run [function] [call site] 00092
8 streamn [function] [call site] 00093
8 stream [function] [call site] 00094
6 out_number [function] [call site] 00095
7 stream_pad [function] [call site] 00096
8 stream_run [function] [call site] 00097
8 stream_run [function] [call site] 00098
7 OUTCHAR [function] [call site] 00099
7 stream_pad [function] [call site] 00100
7 DEBUGASSERT [function] [call site] 00101
7 stream_pad [function] [call site] 00102
7 OUTCHAR [function] [call site] 00103
7 OUTCHAR [function] [call site] 00104
7 OUTCHAR [function] [call site] 00105
7 OUTCHAR [function] [call site] 00106
7 OUTCHAR [function] [call site] 00107
7 OUTCHAR [function] [call site] 00108
7 stream_pad [function] [call site] 00109
7 stream_run [function] [call site] 00110
7 stream_pad [function] [call site] 00111
6 out_number [function] [call site] 00112
6 out_string [function] [call site] 00113
7 CURL_CSTRLEN [function] [call site] 00114
7 CURL_CSTRLEN [function] [call site] 00115
7 strlen [function] [call site] 00116
7 OUTCHAR [function] [call site] 00117
7 stream_pad [function] [call site] 00118
7 stream_run [function] [call site] 00119
7 stream_zrun [function] [call site] 00120
7 stream_pad [function] [call site] 00121
7 OUTCHAR [function] [call site] 00122
6 out_pointer [function] [call site] 00123
7 out_number [function] [call site] 00124
7 CURL_CSTRLEN [function] [call site] 00125
7 stream_pad [function] [call site] 00126
7 stream_run [function] [call site] 00127
7 stream_pad [function] [call site] 00128
6 out_double [function] [call site] 00129
7 strlen [function] [call site] 00130
7 curl_msnprintf [function] [call site] 00131
8 va_start [function] [call site] 00132
8 curl_mvsnprintf [function] [call site] 00133
9 formatf [function] [call site] 00134
9 DEBUGASSERT [function] [call site] 00135
8 va_end [function] [call site] 00136
7 curl_msnprintf [function] [call site] 00137
7 curlx_win32_snprintf [function] [call site] 00138
8 va_start [function] [call site] 00139
8 vsnprintf [function] [call site] 00140
8 va_end [function] [call site] 00141
7 snprintf [function] [call site] 00142
7 DEBUGASSERT [function] [call site] 00143
7 strlen [function] [call site] 00144
7 stream_run [function] [call site] 00145
7 strlen [function] [call site] 00146
6 flush [function] [call site] 00147
4 va_end [function] [call site] 00148
3 curl_url_strerror [function] [call site] 00149
3 curl_url_get [function] [call site] 00150
4 Curl_get_scheme [function] [call site] 00151
4 curl_msnprintf [function] [call site] 00152
4 Curl_get_scheme [function] [call site] 00153
4 curl_msnprintf [function] [call site] 00154
4 urlget_url [function] [call site] 00155
5 curl_strequal [function] [call site] 00156
6 casecompare [function] [call site] 00157
7 Curl_raw_toupper [function] [call site] 00158
7 Curl_raw_toupper [function] [call site] 00159
5 file_url [function] [call site] 00160
6 curl_maprintf [function] [call site] 00161
7 va_start [function] [call site] 00162
7 curl_mvaprintf [function] [call site] 00163
8 curlx_dyn_init [function] [call site] 00164
9 DEBUGASSERT [function] [call site] 00165
9 DEBUGASSERT [function] [call site] 00166
9 DEBUGASSERT [function] [call site] 00167
8 formatf [function] [call site] 00168
8 alloc_flush [function] [call site] 00169
9 curlx_dyn_addn [function] [call site] 00170
10 DEBUGASSERT [function] [call site] 00171
10 DEBUGASSERT [function] [call site] 00172
10 DEBUGASSERT [function] [call site] 00173
10 dyn_nappend [function] [call site] 00174
11 DEBUGASSERT [function] [call site] 00175
11 DEBUGASSERT [function] [call site] 00176
11 DEBUGASSERT [function] [call site] 00177
11 DEBUGASSERT [function] [call site] 00178
11 DEBUGASSERT [function] [call site] 00179
11 DEBUGASSERT [function] [call site] 00180
11 curlx_dyn_free [function] [call site] 00181
12 DEBUGASSERT [function] [call site] 00182
12 DEBUGASSERT [function] [call site] 00183
12 curlx_safefree [function] [call site] 00184
11 DEBUGASSERT [function] [call site] 00185
11 curlx_realloc [function] [call site] 00186
11 curlx_dyn_free [function] [call site] 00187
11 memcpy [function] [call site] 00188
8 curlx_dyn_free [function] [call site] 00189
8 curlx_dyn_len [function] [call site] 00190
9 DEBUGASSERT [function] [call site] 00191
9 DEBUGASSERT [function] [call site] 00192
9 DEBUGASSERT [function] [call site] 00193
8 curlx_dyn_ptr [function] [call site] 00194
9 DEBUGASSERT [function] [call site] 00195
9 DEBUGASSERT [function] [call site] 00196
9 DEBUGASSERT [function] [call site] 00197
8 curlx_strdup [function] [call site] 00198
7 va_end [function] [call site] 00199
5 curl_msnprintf [function] [call site] 00200
5 Curl_get_scheme [function] [call site] 00201
5 curl_msnprintf [function] [call site] 00202
5 strlen [function] [call site] 00203
5 curlx_dyn_init [function] [call site] 00204
5 curlx_dyn_addf [function] [call site] 00205
6 DEBUGASSERT [function] [call site] 00206
6 DEBUGASSERT [function] [call site] 00207
6 DEBUGASSERT [function] [call site] 00208
6 DEBUGASSERT [function] [call site] 00209
6 strcmp [function] [call site] 00210
6 va_start [function] [call site] 00211
6 curlx_dyn_vaddf [function] [call site] 00212
7 DEBUGASSERT [function] [call site] 00213
7 DEBUGASSERT [function] [call site] 00214
7 DEBUGASSERT [function] [call site] 00215
7 DEBUGASSERT [function] [call site] 00216
7 curlx_dyn_vprintf [function] [call site] 00217
8 formatf [function] [call site] 00218
8 alloc_flush [function] [call site] 00219
8 curlx_dyn_free [function] [call site] 00220
7 curl_mvaprintf [function] [call site] 00221
7 dyn_nappend [function] [call site] 00222
7 strlen [function] [call site] 00223
7 curl_free [function] [call site] 00224
8 curlx_free [function] [call site] 00225
7 curlx_dyn_free [function] [call site] 00226
6 va_end [function] [call site] 00227
5 curlx_dyn_ptr [function] [call site] 00228
5 curl_easy_escape [function] [call site] 00229
6 strlen [function] [call site] 00230
6 curlx_strdup [function] [call site] 00231
6 curlx_malloc [function] [call site] 00232
6 memcpy [function] [call site] 00233
6 memcpy [function] [call site] 00234
6 memcpy [function] [call site] 00235
5 Curl_is_ASCII_name [function] [call site] 00236
6 strlen [function] [call site] 00237
6 Curl_is_ASCII_str [function] [call site] 00238
5 host_decode [function] [call site] 00239
5 Curl_is_ASCII_name [function] [call site] 00240
5 host_encode [function] [call site] 00241
5 curl_msnprintf [function] [call site] 00242
5 curl_maprintf [function] [call site] 00243
5 curlx_free [function] [call site] 00244
4 urlget_format [function] [call site] 00245
5 strlen [function] [call site] 00246
5 curlx_memdup0 [function] [call site] 00247
6 curlx_malloc [function] [call site] 00248
6 DEBUGASSERT [function] [call site] 00249
6 memcpy [function] [call site] 00250
5 Curl_urldecode [function] [call site] 00251
6 DEBUGASSERT [function] [call site] 00252
6 DEBUGASSERT [function] [call site] 00253
6 strlen [function] [call site] 00254
6 curlx_malloc [function] [call site] 00255
6 memchr [function] [call site] 00256
6 memchr [function] [call site] 00257
6 memcpy [function] [call site] 00258
6 curlx_safefree [function] [call site] 00259
5 curlx_free [function] [call site] 00260
5 curlx_dyn_init [function] [call site] 00261
5 urlencode_str [function] [call site] 00262
6 DEBUGASSERT [function] [call site] 00263
6 find_host_sep [function] [call site] 00264
7 strstr [function] [call site] 00265
6 curlx_dyn_addn [function] [call site] 00266
6 curlx_dyn_addn [function] [call site] 00267
6 curlx_dyn_addn [function] [call site] 00268
6 Curl_hexbyte [function] [call site] 00269
6 curlx_dyn_addn [function] [call site] 00270
6 ISXDIGIT [function] [call site] 00271
6 ISXDIGIT [function] [call site] 00272
6 ISLOWER [function] [call site] 00273
6 ISLOWER [function] [call site] 00274
6 curlx_hexval [function] [call site] 00275
6 curlx_hexval [function] [call site] 00276
6 Curl_hexbyte [function] [call site] 00277
6 curlx_dyn_addn [function] [call site] 00278
6 ISXDIGIT [function] [call site] 00279
6 ISXDIGIT [function] [call site] 00280
6 ISLOWER [function] [call site] 00281
6 ISLOWER [function] [call site] 00282
6 curlx_dyn_addn [function] [call site] 00283
6 cc2cu [function] [call site] 00284
5 curlx_free [function] [call site] 00285
5 curlx_dyn_ptr [function] [call site] 00286
5 Curl_is_ASCII_name [function] [call site] 00287
5 host_decode [function] [call site] 00288
5 curlx_free [function] [call site] 00289
5 Curl_is_ASCII_name [function] [call site] 00290
5 host_encode [function] [call site] 00291
5 curlx_free [function] [call site] 00292
3 curl_mfprintf [function] [call site] 00293
3 curl_url_strerror [function] [call site] 00294
3 checkurl [function] [call site] 00295
4 strcmp [function] [call site] 00296
4 curl_mfprintf [function] [call site] 00297
3 curl_free [function] [call site] 00298
3 curl_mfprintf [function] [call site] 00299
3 curl_url_cleanup [function] [call site] 00300
4 free_urlhandle [function] [call site] 00301
4 curlx_free [function] [call site] 00302
2 DEBUGASSERT [function] [call site] 00303
2 curlx_dyn_init [function] [call site] 00304
2 CURLMAX [function] [call site] 00305
2 curlx_dyn_addn [function] [call site] 00306
2 cc2cu [function] [call site] 00307
2 url_encode_part [function] [call site] 00308
3 curlx_dyn_addn [function] [call site] 00309
3 ISUNRESERVED [function] [call site] 00310
3 allowed_in_path [function] [call site] 00311
3 curlx_dyn_addn [function] [call site] 00312
3 Curl_hexbyte [function] [call site] 00313
3 curlx_dyn_addn [function] [call site] 00314
3 cc2cu [function] [call site] 00315
2 url_uppercasehex_part [function] [call site] 00316
3 curlx_dyn_add [function] [call site] 00317
4 DEBUGASSERT [function] [call site] 00318
4 DEBUGASSERT [function] [call site] 00319
4 DEBUGASSERT [function] [call site] 00320
4 DEBUGASSERT [function] [call site] 00321
4 strlen [function] [call site] 00322
4 dyn_nappend [function] [call site] 00323
3 cc2cu [function] [call site] 00324
3 curlx_dyn_ptr [function] [call site] 00325
3 ISXDIGIT [function] [call site] 00326
3 ISXDIGIT [function] [call site] 00327
3 ISLOWER [function] [call site] 00328
3 ISLOWER [function] [call site] 00329
3 Curl_raw_toupper [function] [call site] 00330
3 Curl_raw_toupper [function] [call site] 00331
2 curlx_dyn_ptr [function] [call site] 00332
2 url_append_query [function] [call site] 00333
3 strlen [function] [call site] 00334
3 curlx_dyn_ptr [function] [call site] 00335
3 curlx_dyn_init [function] [call site] 00336
3 curlx_dyn_addn [function] [call site] 00337
3 curlx_dyn_addn [function] [call site] 00338
3 curlx_dyn_add [function] [call site] 00339
3 curlx_dyn_free [function] [call site] 00340
3 curlx_free [function] [call site] 00341
3 curlx_dyn_ptr [function] [call site] 00342
3 curlx_dyn_free [function] [call site] 00343
3 cc2cu [function] [call site] 00344
3 curlx_free [function] [call site] 00345
3 curlx_dyn_ptr [function] [call site] 00346
2 url_sethost [function] [call site] 00347
3 curlx_dyn_len [function] [call site] 00348
3 curlx_dyn_ptr [function] [call site] 00349
3 Curl_urldecode [function] [call site] 00350
3 hostname_check6 [function] [call site] 00351
4 DEBUGASSERT [function] [call site] 00352
4 ipv6_parse [function] [call site] 00353
5 DEBUGASSERT [function] [call site] 00354
5 strspn [function] [call site] 00355
5 strncmp [function] [call site] 00356
5 curlx_strdup [function] [call site] 00357
5 curlx_inet_pton [function] [call site] 00358
6 inet_pton4 [function] [call site] 00359
7 ISDIGIT [function] [call site] 00360
7 memcpy [function] [call site] 00361
6 inet_pton6 [function] [call site] 00362
7 memset [function] [call site] 00363
7 ISXDIGIT [function] [call site] 00364
7 curlx_hexval [function] [call site] 00365
7 inet_pton4 [function] [call site] 00366
7 memcpy [function] [call site] 00367
5 curlx_inet_ntop [function] [call site] 00368
6 inet_ntop4 [function] [call site] 00369
7 DEBUGASSERT [function] [call site] 00370
7 SNPRINTF [function] [call site] 00371
7 strlen [function] [call site] 00372
7 curlx_strcopy [function] [call site] 00373
8 DEBUGASSERT [function] [call site] 00374
8 memcpy [function] [call site] 00375
6 inet_ntop6 [function] [call site] 00376
7 memset [function] [call site] 00377
7 inet_ntop4 [function] [call site] 00378
7 strlen [function] [call site] 00379
7 curlx_strcopy [function] [call site] 00380
5 strlen [function] [call site] 00381
4 hostname_check [function] [call site] 00382
3 curlx_dyn_init [function] [call site] 00383
3 curlx_dyn_addn [function] [call site] 00384
3 ipv4_normalize [function] [call site] 00385
4 curlx_dyn_ptr [function] [call site] 00386
4 ISDIGIT [function] [call site] 00387
4 curlx_str_hex [function] [call site] 00388
5 str_num_base [function] [call site] 00389
4 curlx_str_octal [function] [call site] 00390
5 str_num_base [function] [call site] 00391
4 curlx_str_number [function] [call site] 00392
4 curlx_dyn_reset [function] [call site] 00393
5 DEBUGASSERT [function] [call site] 00394
5 DEBUGASSERT [function] [call site] 00395
5 DEBUGASSERT [function] [call site] 00396
4 curlx_dyn_addf [function] [call site] 00397
4 curlx_dyn_reset [function] [call site] 00398
4 curlx_dyn_addf [function] [call site] 00399
4 curlx_dyn_reset [function] [call site] 00400
4 curlx_dyn_addf [function] [call site] 00401
4 curlx_dyn_reset [function] [call site] 00402
4 curlx_dyn_addf [function] [call site] 00403
3 curlx_dyn_reset [function] [call site] 00404
3 curlx_dyn_addn [function] [call site] 00405
3 curlx_dyn_ptr [function] [call site] 00406
3 curlx_dyn_len [function] [call site] 00407
3 curlx_dyn_free [function] [call site] 00408
3 curlx_free [function] [call site] 00409
3 hostname_check6 [function] [call site] 00410
3 ipv4_normalize [function] [call site] 00411
3 curlx_dyn_free [function] [call site] 00412
2 curlx_strzero [function] [call site] 00413
2 curlx_free [function] [call site] 00414
2 CURL_UNCONST [function] [call site] 00415
1 free [function] [call site] 00416
1 curl_url_cleanup [function] [call site] 00417