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
40 295 curl_url_cleanup call site: 00295 hostname_check
29 264 Curl_urldecode call site: 00264 checkurl
25 130 formatf call site: 00130 out_double
13 238 curlx_dyn_addn call site: 00238 curl_maprintf
12 89 dollarstring call site: 00089 dollarstring
12 173 curl_url_set call site: 00173 curl_url_set
11 17 free_urlhandle call site: 00017 Curl_safefree
11 223 dyn_nappend call site: 00223 curl_easy_escape
10 342 ipv6_parse call site: 00342 inet_pton6
9 187 urlget_url call site: 00187 curlx_dyn_addf
8 119 out_number call site: 00119 OUTCHAR
6 62 Curl_get_scheme_handler call site: 00062 set_url_port

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 curl_url [function] [call site] 00001
2 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 free [function] [call site] 00008
4 free [function] [call site] 00009
4 free [function] [call site] 00010
4 free [function] [call site] 00011
4 free [function] [call site] 00012
4 free [function] [call site] 00013
4 free [function] [call site] 00014
4 free [function] [call site] 00015
4 free [function] [call site] 00016
4 free [function] [call site] 00017
3 memset [function] [call site] 00018
3 Curl_safefree [function] [call site] 00019
3 Curl_safefree [function] [call site] 00020
3 Curl_safefree [function] [call site] 00021
3 Curl_safefree [function] [call site] 00022
3 Curl_safefree [function] [call site] 00023
3 Curl_safefree [function] [call site] 00024
3 Curl_safefree [function] [call site] 00025
3 Curl_safefree [function] [call site] 00026
3 Curl_safefree [function] [call site] 00027
3 Curl_safefree [function] [call site] 00028
2 strlen [function] [call site] 00029
2 set_url_scheme [function] [call site] 00030
3 strlen [function] [call site] 00031
3 Curl_get_scheme_handler [function] [call site] 00032
4 Curl_getn_scheme_handler [function] [call site] 00033
5 defined [function] [call site] 00034
5 defined [function] [call site] 00035
5 defined [function] [call site] 00036
5 defined [function] [call site] 00037
5 defined [function] [call site] 00038
5 defined [function] [call site] 00039
5 defined [function] [call site] 00040
5 defined [function] [call site] 00041
5 defined [function] [call site] 00042
5 defined [function] [call site] 00043
5 defined [function] [call site] 00044
5 defined [function] [call site] 00045
5 defined [function] [call site] 00046
5 defined [function] [call site] 00047
5 defined [function] [call site] 00048
5 defined [function] [call site] 00049
5 defined [function] [call site] 00050
5 defined [function] [call site] 00051
5 defined [function] [call site] 00052
5 defined [function] [call site] 00053
5 defined [function] [call site] 00054
5 Curl_raw_tolower [function] [call site] 00055
5 curl_strnequal [function] [call site] 00056
6 ncasecompare [function] [call site] 00057
7 Curl_raw_toupper [function] [call site] 00058
7 Curl_raw_toupper [function] [call site] 00059
7 Curl_raw_toupper [function] [call site] 00060
7 Curl_raw_toupper [function] [call site] 00061
4 strlen [function] [call site] 00062
3 ISALPHA [function] [call site] 00063
3 ISALNUM [function] [call site] 00064
2 Curl_safefree [function] [call site] 00065
2 set_url_port [function] [call site] 00066
3 ISDIGIT [function] [call site] 00067
3 curlx_str_number [function] [call site] 00068
4 str_num_base [function] [call site] 00069
5 DEBUGASSERT [function] [call site] 00070
5 DEBUGASSERT [function] [call site] 00071
5 DEBUGASSERT [function] [call site] 00072
5 valid_digit [function] [call site] 00073
5 Curl_hexval [function] [call site] 00074
5 valid_digit [function] [call site] 00075
5 Curl_hexval [function] [call site] 00076
5 valid_digit [function] [call site] 00077
3 curl_maprintf [function] [call site] 00078
4 va_start [function] [call site] 00079
4 curl_mvaprintf [function] [call site] 00080
5 curlx_dyn_init [function] [call site] 00081
6 DEBUGASSERT [function] [call site] 00082
6 DEBUGASSERT [function] [call site] 00083
6 DEBUGASSERT [function] [call site] 00084
5 formatf [function] [call site] 00085
6 parsefmt [function] [call site] 00086
7 memset [function] [call site] 00087
7 dollarstring [function] [call site] 00088
8 curlx_str_number [function] [call site] 00089
8 curlx_str_single [function] [call site] 00090
9 DEBUGASSERT [function] [call site] 00091
7 dollarstring [function] [call site] 00092
7 curlx_str_number [function] [call site] 00093
7 FALLTHROUGH [function] [call site] 00094
7 curlx_str_number [function] [call site] 00095
7 dollarstring [function] [call site] 00096
7 FALLTHROUGH [function] [call site] 00097
7 is_arg_used [function] [call site] 00098
7 mark_arg_used [function] [call site] 00099
7 is_arg_used [function] [call site] 00100
7 mark_arg_used [function] [call site] 00101
7 mark_arg_used [function] [call site] 00102
7 is_arg_used [function] [call site] 00103
7 va_arg [function] [call site] 00104
7 va_arg [function] [call site] 00105
7 va_arg [function] [call site] 00106
7 va_arg [function] [call site] 00107
7 va_arg [function] [call site] 00108
7 va_arg [function] [call site] 00109
7 va_arg [function] [call site] 00110
7 va_arg [function] [call site] 00111
7 va_arg [function] [call site] 00112
7 DEBUGASSERT [function] [call site] 00113
6 stream [function] [call site] 00114
6 out_number [function] [call site] 00115
7 OUTCHAR [function] [call site] 00116
7 OUTCHAR [function] [call site] 00117
7 OUTCHAR [function] [call site] 00118
7 DEBUGASSERT [function] [call site] 00119
7 OUTCHAR [function] [call site] 00120
7 OUTCHAR [function] [call site] 00121
7 OUTCHAR [function] [call site] 00122
7 OUTCHAR [function] [call site] 00123
7 OUTCHAR [function] [call site] 00124
7 OUTCHAR [function] [call site] 00125
7 OUTCHAR [function] [call site] 00126
7 OUTCHAR [function] [call site] 00127
7 OUTCHAR [function] [call site] 00128
7 OUTCHAR [function] [call site] 00129
6 out_number [function] [call site] 00130
6 out_string [function] [call site] 00131
7 strlen [function] [call site] 00132
7 OUTCHAR [function] [call site] 00133
7 OUTCHAR [function] [call site] 00134
7 OUTCHAR [function] [call site] 00135
7 OUTCHAR [function] [call site] 00136
7 OUTCHAR [function] [call site] 00137
6 out_pointer [function] [call site] 00138
7 out_number [function] [call site] 00139
7 OUTCHAR [function] [call site] 00140
7 OUTCHAR [function] [call site] 00141
7 OUTCHAR [function] [call site] 00142
6 out_double [function] [call site] 00143
7 strlen [function] [call site] 00144
7 curl_msnprintf [function] [call site] 00145
8 va_start [function] [call site] 00146
8 curl_mvsnprintf [function] [call site] 00147
9 formatf [function] [call site] 00148
9 DEBUGASSERT [function] [call site] 00149
8 va_end [function] [call site] 00150
7 curl_msnprintf [function] [call site] 00151
7 DEBUGASSERT [function] [call site] 00152
7 strlen [function] [call site] 00153
7 stream [function] [call site] 00154
5 curlx_dyn_free [function] [call site] 00155
6 DEBUGASSERT [function] [call site] 00156
6 DEBUGASSERT [function] [call site] 00157
6 Curl_safefree [function] [call site] 00158
5 curlx_dyn_len [function] [call site] 00159
6 DEBUGASSERT [function] [call site] 00160
6 DEBUGASSERT [function] [call site] 00161
6 DEBUGASSERT [function] [call site] 00162
5 curlx_dyn_ptr [function] [call site] 00163
6 DEBUGASSERT [function] [call site] 00164
6 DEBUGASSERT [function] [call site] 00165
6 DEBUGASSERT [function] [call site] 00166
5 strdup [function] [call site] 00167
6 strlen [function] [call site] 00168
6 malloc [function] [call site] 00169
6 memcpy [function] [call site] 00170
4 va_end [function] [call site] 00171
3 free [function] [call site] 00172
2 set_url [function] [call site] 00173
3 curl_url [function] [call site] 00174
3 curl_url_set [function] [call site] 00175
3 curl_url_set [function] [call site] 00176
3 curl_mfprintf [function] [call site] 00177
4 va_start [function] [call site] 00178
4 formatf [function] [call site] 00179
4 va_end [function] [call site] 00180
3 curl_url_strerror [function] [call site] 00181
3 curl_url_get [function] [call site] 00182
4 Curl_get_scheme_handler [function] [call site] 00183
4 curl_msnprintf [function] [call site] 00184
4 Curl_get_scheme_handler [function] [call site] 00185
4 urlget_url [function] [call site] 00186
5 curl_strequal [function] [call site] 00187
6 casecompare [function] [call site] 00188
7 Curl_raw_toupper [function] [call site] 00189
7 Curl_raw_toupper [function] [call site] 00190
5 curl_maprintf [function] [call site] 00191
5 Curl_get_scheme_handler [function] [call site] 00192
5 curl_msnprintf [function] [call site] 00193
5 strlen [function] [call site] 00194
5 curlx_dyn_init [function] [call site] 00195
5 curlx_dyn_addf [function] [call site] 00196
6 DEBUGASSERT [function] [call site] 00197
6 DEBUGASSERT [function] [call site] 00198
6 DEBUGASSERT [function] [call site] 00199
6 DEBUGASSERT [function] [call site] 00200
6 strcmp [function] [call site] 00201
6 va_start [function] [call site] 00202
6 curlx_dyn_vaddf [function] [call site] 00203
7 DEBUGASSERT [function] [call site] 00204
7 DEBUGASSERT [function] [call site] 00205
7 DEBUGASSERT [function] [call site] 00206
7 DEBUGASSERT [function] [call site] 00207
7 curlx_dyn_vprintf [function] [call site] 00208
8 formatf [function] [call site] 00209
8 curlx_dyn_free [function] [call site] 00210
7 curl_mvaprintf [function] [call site] 00211
7 dyn_nappend [function] [call site] 00212
8 DEBUGASSERT [function] [call site] 00213
8 DEBUGASSERT [function] [call site] 00214
8 DEBUGASSERT [function] [call site] 00215
8 DEBUGASSERT [function] [call site] 00216
8 DEBUGASSERT [function] [call site] 00217
8 DEBUGASSERT [function] [call site] 00218
8 curlx_dyn_free [function] [call site] 00219
8 DEBUGASSERT [function] [call site] 00220
8 realloc [function] [call site] 00221
8 curlx_dyn_free [function] [call site] 00222
8 memcpy [function] [call site] 00223
7 strlen [function] [call site] 00224
7 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 strdup [function] [call site] 00231
6 curlx_dyn_init [function] [call site] 00232
6 ISUNRESERVED [function] [call site] 00233
6 curlx_dyn_addn [function] [call site] 00234
7 DEBUGASSERT [function] [call site] 00235
7 DEBUGASSERT [function] [call site] 00236
7 DEBUGASSERT [function] [call site] 00237
7 dyn_nappend [function] [call site] 00238
6 Curl_hexbyte [function] [call site] 00239
6 curlx_dyn_addn [function] [call site] 00240
6 curlx_dyn_ptr [function] [call site] 00241
5 Curl_is_ASCII_name [function] [call site] 00242
5 host_decode [function] [call site] 00243
5 Curl_is_ASCII_name [function] [call site] 00244
5 host_encode [function] [call site] 00245
5 curl_msnprintf [function] [call site] 00246
5 curl_maprintf [function] [call site] 00247
5 free [function] [call site] 00248
4 urlget_format [function] [call site] 00249
5 strlen [function] [call site] 00250
5 Curl_memdup0 [function] [call site] 00251
6 malloc [function] [call site] 00252
6 DEBUGASSERT [function] [call site] 00253
6 memcpy [function] [call site] 00254
5 Curl_urldecode [function] [call site] 00255
6 DEBUGASSERT [function] [call site] 00256
6 DEBUGASSERT [function] [call site] 00257
6 strlen [function] [call site] 00258
6 malloc [function] [call site] 00259
6 ISXDIGIT [function] [call site] 00260
6 ISXDIGIT [function] [call site] 00261
6 Curl_hexval [function] [call site] 00262
6 Curl_hexval [function] [call site] 00263
6 Curl_safefree [function] [call site] 00264
5 free [function] [call site] 00265
5 curlx_dyn_init [function] [call site] 00266
5 urlencode_str [function] [call site] 00267
6 find_host_sep [function] [call site] 00268
7 strstr [function] [call site] 00269
6 curlx_dyn_addn [function] [call site] 00270
6 curlx_dyn_addn [function] [call site] 00271
6 curlx_dyn_addn [function] [call site] 00272
6 Curl_hexbyte [function] [call site] 00273
6 curlx_dyn_addn [function] [call site] 00274
6 curlx_dyn_addn [function] [call site] 00275
6 cc2cu [function] [call site] 00276
5 free [function] [call site] 00277
5 curlx_dyn_ptr [function] [call site] 00278
5 Curl_is_ASCII_name [function] [call site] 00279
5 host_decode [function] [call site] 00280
5 free [function] [call site] 00281
5 Curl_is_ASCII_name [function] [call site] 00282
5 host_encode [function] [call site] 00283
5 free [function] [call site] 00284
3 curl_mfprintf [function] [call site] 00285
3 curl_url_strerror [function] [call site] 00286
3 checkurl [function] [call site] 00287
4 strcmp [function] [call site] 00288
4 curl_mfprintf [function] [call site] 00289
3 curl_free [function] [call site] 00290
4 free [function] [call site] 00291
3 curl_mfprintf [function] [call site] 00292
3 curl_url_cleanup [function] [call site] 00293
4 free_urlhandle [function] [call site] 00294
4 free [function] [call site] 00295
2 DEBUGASSERT [function] [call site] 00296
2 curlx_dyn_init [function] [call site] 00297
2 curlx_dyn_addn [function] [call site] 00298
2 cc2cu [function] [call site] 00299
2 curlx_dyn_addn [function] [call site] 00300
2 ISUNRESERVED [function] [call site] 00301
2 allowed_in_path [function] [call site] 00302
2 curlx_dyn_addn [function] [call site] 00303
2 cc2cu [function] [call site] 00304
2 Curl_hexbyte [function] [call site] 00305
2 curlx_dyn_addn [function] [call site] 00306
2 cc2cu [function] [call site] 00307
2 curlx_dyn_add [function] [call site] 00308
3 DEBUGASSERT [function] [call site] 00309
3 DEBUGASSERT [function] [call site] 00310
3 DEBUGASSERT [function] [call site] 00311
3 DEBUGASSERT [function] [call site] 00312
3 strlen [function] [call site] 00313
3 dyn_nappend [function] [call site] 00314
2 cc2cu [function] [call site] 00315
2 curlx_dyn_ptr [function] [call site] 00316
2 ISXDIGIT [function] [call site] 00317
2 ISXDIGIT [function] [call site] 00318
2 ISUPPER [function] [call site] 00319
2 ISUPPER [function] [call site] 00320
2 Curl_raw_tolower [function] [call site] 00321
2 Curl_raw_tolower [function] [call site] 00322
2 curlx_dyn_ptr [function] [call site] 00323
2 strlen [function] [call site] 00324
2 curlx_dyn_init [function] [call site] 00325
2 curlx_dyn_addn [function] [call site] 00326
2 curlx_dyn_addn [function] [call site] 00327
2 curlx_dyn_add [function] [call site] 00328
2 curlx_dyn_free [function] [call site] 00329
2 free [function] [call site] 00330
2 curlx_dyn_ptr [function] [call site] 00331
2 curlx_dyn_free [function] [call site] 00332
2 curlx_dyn_len [function] [call site] 00333
2 Curl_urldecode [function] [call site] 00334
2 hostname_check [function] [call site] 00335
3 DEBUGASSERT [function] [call site] 00336
3 ipv6_parse [function] [call site] 00337
4 DEBUGASSERT [function] [call site] 00338
4 strspn [function] [call site] 00339
4 strncmp [function] [call site] 00340
4 strdup [function] [call site] 00341
4 curlx_inet_pton [function] [call site] 00342
5 inet_pton4 [function] [call site] 00343
6 ISDIGIT [function] [call site] 00344
6 memcpy [function] [call site] 00345
5 inet_pton6 [function] [call site] 00346
6 memset [function] [call site] 00347
6 ISXDIGIT [function] [call site] 00348
6 Curl_hexval [function] [call site] 00349
6 inet_pton4 [function] [call site] 00350
6 memcpy [function] [call site] 00351
5 CURL_SETERRNO [function] [call site] 00352
4 curlx_inet_ntop [function] [call site] 00353
4 strlen [function] [call site] 00354
3 strcspn [function] [call site] 00355
2 free [function] [call site] 00356
2 hostname_check [function] [call site] 00357
2 CURL_UNCONST [function] [call site] 00358
2 curlx_dyn_free [function] [call site] 00359
2 free [function] [call site] 00360
2 CURL_UNCONST [function] [call site] 00361
1 free [function] [call site] 00362
1 curl_url_cleanup [function] [call site] 00363