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
50 298 curl_url_cleanup call site: 00298 url_sethost
42 254 Curl_urldecode call site: 00254 checkurl
27 216 curlx_dyn_vprintf call site: 00216 curl_mvaprintf
20 131 curl_mvsnprintf call site: 00131 curl_url_get
18 110 formatf call site: 00110 out_double
11 19 free_urlhandle call site: 00019 curlx_strzero
8 153 urlget_url call site: 00153 file_url
8 194 curlx_dyn_ptr call site: 00194 curlx_dyn_addf
7 100 out_number call site: 00100 stream_pad
7 376 ipv6_parse call site: 00376 hostname_check6
6 36 Curl_get_scheme call site: 00036 set_url_port
6 52 curl_url_set call site: 00052 curl_url_set

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