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
40 288 curl_url_cleanup call site: 00288 hostname_check
37 249 Curl_urldecode call site: 00249 checkurl
30 110 formatf call site: 00110 out_double
15 221 curlx_dyn_addn call site: 00221 curl_maprintf
12 155 curl_url_set call site: 00155 curl_url_set
12 205 dyn_nappend call site: 00205 curl_easy_escape
11 17 free_urlhandle call site: 00017 curlx_safefree
9 169 urlget_url call site: 00169 curlx_dyn_addf
9 335 ipv6_parse call site: 00335 inet_pton6
8 99 out_number call site: 00099 OUTCHAR
6 41 Curl_get_scheme call site: 00041 set_url_port
6 347 hostname_check call site: 00347 hostname_check

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_free [function] [call site] 00010
4 curlx_free [function] [call site] 00011
4 curlx_free [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
3 memset [function] [call site] 00018
3 curlx_safefree [function] [call site] 00019
3 curlx_safefree [function] [call site] 00020
3 curlx_safefree [function] [call site] 00021
3 curlx_safefree [function] [call site] 00022
3 curlx_safefree [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
2 strlen [function] [call site] 00029
2 set_url_scheme [function] [call site] 00030
3 strlen [function] [call site] 00031
3 Curl_get_scheme [function] [call site] 00032
4 Curl_getn_scheme [function] [call site] 00033
5 Curl_raw_tolower [function] [call site] 00034
5 curl_strnequal [function] [call site] 00035
6 ncasecompare [function] [call site] 00036
7 Curl_raw_toupper [function] [call site] 00037
7 Curl_raw_toupper [function] [call site] 00038
7 Curl_raw_toupper [function] [call site] 00039
7 Curl_raw_toupper [function] [call site] 00040
4 strlen [function] [call site] 00041
3 ISALPHA [function] [call site] 00042
3 ISALNUM [function] [call site] 00043
2 curlx_safefree [function] [call site] 00044
2 set_url_port [function] [call site] 00045
3 ISDIGIT [function] [call site] 00046
3 curlx_str_number [function] [call site] 00047
4 str_num_base [function] [call site] 00048
5 DEBUGASSERT [function] [call site] 00049
5 DEBUGASSERT [function] [call site] 00050
5 DEBUGASSERT [function] [call site] 00051
5 valid_digit [function] [call site] 00052
5 curlx_hexval [function] [call site] 00053
5 valid_digit [function] [call site] 00054
5 curlx_hexval [function] [call site] 00055
5 valid_digit [function] [call site] 00056
3 curl_maprintf [function] [call site] 00057
4 va_start [function] [call site] 00058
4 curl_mvaprintf [function] [call site] 00059
5 curlx_dyn_init [function] [call site] 00060
6 DEBUGASSERT [function] [call site] 00061
6 DEBUGASSERT [function] [call site] 00062
6 DEBUGASSERT [function] [call site] 00063
5 formatf [function] [call site] 00064
6 parsefmt [function] [call site] 00065
7 memset [function] [call site] 00066
7 dollarstring [function] [call site] 00067
8 curlx_str_number [function] [call site] 00068
8 curlx_str_single [function] [call site] 00069
9 DEBUGASSERT [function] [call site] 00070
7 parse_flags [function] [call site] 00071
8 dollarstring [function] [call site] 00072
8 curlx_str_number [function] [call site] 00073
8 FALLTHROUGH [function] [call site] 00074
8 curlx_str_number [function] [call site] 00075
8 dollarstring [function] [call site] 00076
7 parse_conversion [function] [call site] 00077
7 is_arg_used [function] [call site] 00078
7 mark_arg_used [function] [call site] 00079
7 is_arg_used [function] [call site] 00080
7 mark_arg_used [function] [call site] 00081
7 mark_arg_used [function] [call site] 00082
7 is_arg_used [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 va_arg [function] [call site] 00090
7 va_arg [function] [call site] 00091
7 va_arg [function] [call site] 00092
7 DEBUGASSERT [function] [call site] 00093
6 stream [function] [call site] 00094
6 out_number [function] [call site] 00095
7 OUTCHAR [function] [call site] 00096
7 OUTCHAR [function] [call site] 00097
7 OUTCHAR [function] [call site] 00098
7 DEBUGASSERT [function] [call site] 00099
7 OUTCHAR [function] [call site] 00100
7 OUTCHAR [function] [call site] 00101
7 OUTCHAR [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 OUTCHAR [function] [call site] 00109
6 out_number [function] [call site] 00110
6 out_string [function] [call site] 00111
7 strlen [function] [call site] 00112
7 OUTCHAR [function] [call site] 00113
7 OUTCHAR [function] [call site] 00114
7 OUTCHAR [function] [call site] 00115
7 OUTCHAR [function] [call site] 00116
7 OUTCHAR [function] [call site] 00117
6 out_pointer [function] [call site] 00118
7 out_number [function] [call site] 00119
7 OUTCHAR [function] [call site] 00120
7 OUTCHAR [function] [call site] 00121
7 OUTCHAR [function] [call site] 00122
6 out_double [function] [call site] 00123
7 strlen [function] [call site] 00124
7 curl_msnprintf [function] [call site] 00125
8 va_start [function] [call site] 00126
8 curl_mvsnprintf [function] [call site] 00127
9 formatf [function] [call site] 00128
9 DEBUGASSERT [function] [call site] 00129
8 va_end [function] [call site] 00130
7 curl_msnprintf [function] [call site] 00131
7 curlx_win32_snprintf [function] [call site] 00132
8 va_start [function] [call site] 00133
8 vsnprintf [function] [call site] 00134
8 va_end [function] [call site] 00135
7 snprintf [function] [call site] 00136
7 DEBUGASSERT [function] [call site] 00137
7 strlen [function] [call site] 00138
7 stream [function] [call site] 00139
5 curlx_dyn_free [function] [call site] 00140
6 DEBUGASSERT [function] [call site] 00141
6 DEBUGASSERT [function] [call site] 00142
6 curlx_safefree [function] [call site] 00143
5 curlx_dyn_len [function] [call site] 00144
6 DEBUGASSERT [function] [call site] 00145
6 DEBUGASSERT [function] [call site] 00146
6 DEBUGASSERT [function] [call site] 00147
5 curlx_dyn_ptr [function] [call site] 00148
6 DEBUGASSERT [function] [call site] 00149
6 DEBUGASSERT [function] [call site] 00150
6 DEBUGASSERT [function] [call site] 00151
5 curlx_strdup [function] [call site] 00152
4 va_end [function] [call site] 00153
3 curlx_free [function] [call site] 00154
2 set_url [function] [call site] 00155
3 curl_url [function] [call site] 00156
3 curl_url_set [function] [call site] 00157
3 curl_url_set [function] [call site] 00158
3 curl_mfprintf [function] [call site] 00159
4 va_start [function] [call site] 00160
4 formatf [function] [call site] 00161
4 va_end [function] [call site] 00162
3 curl_url_strerror [function] [call site] 00163
3 curl_url_get [function] [call site] 00164
4 Curl_get_scheme [function] [call site] 00165
4 curl_msnprintf [function] [call site] 00166
4 Curl_get_scheme [function] [call site] 00167
4 urlget_url [function] [call site] 00168
5 curl_strequal [function] [call site] 00169
6 casecompare [function] [call site] 00170
7 Curl_raw_toupper [function] [call site] 00171
7 Curl_raw_toupper [function] [call site] 00172
5 curl_maprintf [function] [call site] 00173
5 Curl_get_scheme [function] [call site] 00174
5 curl_msnprintf [function] [call site] 00175
5 strlen [function] [call site] 00176
5 curlx_dyn_init [function] [call site] 00177
5 curlx_dyn_addf [function] [call site] 00178
6 DEBUGASSERT [function] [call site] 00179
6 DEBUGASSERT [function] [call site] 00180
6 DEBUGASSERT [function] [call site] 00181
6 DEBUGASSERT [function] [call site] 00182
6 strcmp [function] [call site] 00183
6 va_start [function] [call site] 00184
6 curlx_dyn_vaddf [function] [call site] 00185
7 DEBUGASSERT [function] [call site] 00186
7 DEBUGASSERT [function] [call site] 00187
7 DEBUGASSERT [function] [call site] 00188
7 DEBUGASSERT [function] [call site] 00189
7 curlx_dyn_vprintf [function] [call site] 00190
8 formatf [function] [call site] 00191
8 curlx_dyn_free [function] [call site] 00192
7 curl_mvaprintf [function] [call site] 00193
7 dyn_nappend [function] [call site] 00194
8 DEBUGASSERT [function] [call site] 00195
8 DEBUGASSERT [function] [call site] 00196
8 DEBUGASSERT [function] [call site] 00197
8 DEBUGASSERT [function] [call site] 00198
8 DEBUGASSERT [function] [call site] 00199
8 DEBUGASSERT [function] [call site] 00200
8 curlx_dyn_free [function] [call site] 00201
8 DEBUGASSERT [function] [call site] 00202
8 curlx_realloc [function] [call site] 00203
8 curlx_dyn_free [function] [call site] 00204
8 memcpy [function] [call site] 00205
7 strlen [function] [call site] 00206
7 curl_free [function] [call site] 00207
8 curlx_free [function] [call site] 00208
7 curlx_dyn_free [function] [call site] 00209
6 va_end [function] [call site] 00210
5 curlx_dyn_ptr [function] [call site] 00211
5 curl_easy_escape [function] [call site] 00212
6 strlen [function] [call site] 00213
6 curlx_strdup [function] [call site] 00214
6 curlx_dyn_init [function] [call site] 00215
6 ISUNRESERVED [function] [call site] 00216
6 curlx_dyn_addn [function] [call site] 00217
7 DEBUGASSERT [function] [call site] 00218
7 DEBUGASSERT [function] [call site] 00219
7 DEBUGASSERT [function] [call site] 00220
7 dyn_nappend [function] [call site] 00221
6 Curl_hexbyte [function] [call site] 00222
6 curlx_dyn_addn [function] [call site] 00223
6 curlx_dyn_ptr [function] [call site] 00224
5 Curl_is_ASCII_name [function] [call site] 00225
6 strlen [function] [call site] 00226
6 Curl_is_ASCII_str [function] [call site] 00227
5 host_decode [function] [call site] 00228
5 Curl_is_ASCII_name [function] [call site] 00229
5 host_encode [function] [call site] 00230
5 curl_msnprintf [function] [call site] 00231
5 curl_maprintf [function] [call site] 00232
5 curlx_free [function] [call site] 00233
4 urlget_format [function] [call site] 00234
5 strlen [function] [call site] 00235
5 curlx_memdup0 [function] [call site] 00236
6 curlx_malloc [function] [call site] 00237
6 DEBUGASSERT [function] [call site] 00238
6 memcpy [function] [call site] 00239
5 Curl_urldecode [function] [call site] 00240
6 DEBUGASSERT [function] [call site] 00241
6 DEBUGASSERT [function] [call site] 00242
6 strlen [function] [call site] 00243
6 curlx_malloc [function] [call site] 00244
6 ISXDIGIT [function] [call site] 00245
6 ISXDIGIT [function] [call site] 00246
6 curlx_hexval [function] [call site] 00247
6 curlx_hexval [function] [call site] 00248
6 curlx_safefree [function] [call site] 00249
5 curlx_free [function] [call site] 00250
5 curlx_dyn_init [function] [call site] 00251
5 urlencode_str [function] [call site] 00252
6 DEBUGASSERT [function] [call site] 00253
6 find_host_sep [function] [call site] 00254
7 strstr [function] [call site] 00255
6 curlx_dyn_addn [function] [call site] 00256
6 curlx_dyn_addn [function] [call site] 00257
6 curlx_dyn_addn [function] [call site] 00258
6 Curl_hexbyte [function] [call site] 00259
6 curlx_dyn_addn [function] [call site] 00260
6 ISXDIGIT [function] [call site] 00261
6 ISXDIGIT [function] [call site] 00262
6 ISLOWER [function] [call site] 00263
6 ISLOWER [function] [call site] 00264
6 curlx_hexval [function] [call site] 00265
6 curlx_hexval [function] [call site] 00266
6 Curl_hexbyte [function] [call site] 00267
6 curlx_dyn_addn [function] [call site] 00268
6 curlx_dyn_addn [function] [call site] 00269
6 cc2cu [function] [call site] 00270
5 curlx_free [function] [call site] 00271
5 curlx_dyn_ptr [function] [call site] 00272
5 Curl_is_ASCII_name [function] [call site] 00273
5 host_decode [function] [call site] 00274
5 curlx_free [function] [call site] 00275
5 Curl_is_ASCII_name [function] [call site] 00276
5 host_encode [function] [call site] 00277
5 curlx_free [function] [call site] 00278
3 curl_mfprintf [function] [call site] 00279
3 curl_url_strerror [function] [call site] 00280
3 checkurl [function] [call site] 00281
4 strcmp [function] [call site] 00282
4 curl_mfprintf [function] [call site] 00283
3 curl_free [function] [call site] 00284
3 curl_mfprintf [function] [call site] 00285
3 curl_url_cleanup [function] [call site] 00286
4 free_urlhandle [function] [call site] 00287
4 curlx_free [function] [call site] 00288
2 DEBUGASSERT [function] [call site] 00289
2 curlx_dyn_init [function] [call site] 00290
2 curlx_dyn_addn [function] [call site] 00291
2 cc2cu [function] [call site] 00292
2 curlx_dyn_addn [function] [call site] 00293
2 ISUNRESERVED [function] [call site] 00294
2 allowed_in_path [function] [call site] 00295
2 curlx_dyn_addn [function] [call site] 00296
2 cc2cu [function] [call site] 00297
2 Curl_hexbyte [function] [call site] 00298
2 curlx_dyn_addn [function] [call site] 00299
2 cc2cu [function] [call site] 00300
2 curlx_dyn_add [function] [call site] 00301
3 DEBUGASSERT [function] [call site] 00302
3 DEBUGASSERT [function] [call site] 00303
3 DEBUGASSERT [function] [call site] 00304
3 DEBUGASSERT [function] [call site] 00305
3 strlen [function] [call site] 00306
3 dyn_nappend [function] [call site] 00307
2 cc2cu [function] [call site] 00308
2 curlx_dyn_ptr [function] [call site] 00309
2 ISXDIGIT [function] [call site] 00310
2 ISXDIGIT [function] [call site] 00311
2 ISLOWER [function] [call site] 00312
2 ISLOWER [function] [call site] 00313
2 Curl_raw_toupper [function] [call site] 00314
2 Curl_raw_toupper [function] [call site] 00315
2 curlx_dyn_ptr [function] [call site] 00316
2 strlen [function] [call site] 00317
2 curlx_dyn_init [function] [call site] 00318
2 curlx_dyn_addn [function] [call site] 00319
2 curlx_dyn_addn [function] [call site] 00320
2 curlx_dyn_add [function] [call site] 00321
2 curlx_dyn_free [function] [call site] 00322
2 curlx_free [function] [call site] 00323
2 curlx_dyn_ptr [function] [call site] 00324
2 curlx_dyn_free [function] [call site] 00325
2 curlx_dyn_len [function] [call site] 00326
2 Curl_urldecode [function] [call site] 00327
2 hostname_check [function] [call site] 00328
3 DEBUGASSERT [function] [call site] 00329
3 ipv6_parse [function] [call site] 00330
4 DEBUGASSERT [function] [call site] 00331
4 strspn [function] [call site] 00332
4 strncmp [function] [call site] 00333
4 curlx_strdup [function] [call site] 00334
4 curlx_inet_pton [function] [call site] 00335
5 inet_pton4 [function] [call site] 00336
6 ISDIGIT [function] [call site] 00337
6 memcpy [function] [call site] 00338
5 inet_pton6 [function] [call site] 00339
6 memset [function] [call site] 00340
6 ISXDIGIT [function] [call site] 00341
6 curlx_hexval [function] [call site] 00342
6 inet_pton4 [function] [call site] 00343
6 memcpy [function] [call site] 00344
4 curlx_inet_ntop [function] [call site] 00345
4 strlen [function] [call site] 00346
3 strcspn [function] [call site] 00347
2 curlx_free [function] [call site] 00348
2 hostname_check [function] [call site] 00349
2 CURL_UNCONST [function] [call site] 00350
2 curlx_dyn_free [function] [call site] 00351
2 curlx_free [function] [call site] 00352
2 CURL_UNCONST [function] [call site] 00353
1 free [function] [call site] 00354
1 curl_url_cleanup [function] [call site] 00355