Fuzz introspector: wget_url_fuzzer
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity Unique Reachable Complexities Unique Reachable Functions All non-covered Complexity All Reachable Complexity Function Name Function Callsite Blocked Branch
1186 1186 1 :

['idn_encode']

1186 1374 url_parse call site: 00263 /src/wget/src/url.c:957
774 774 5 :

['load_system_priority_file', 'update_system_wide_priority_string', 'gnutls_strerror', 'construct_system_wide_priority_string', '_gnutls_buffer_clear']

874 874 _gnutls_update_system_priorities call site: 00000 /src/gnutls/lib/priority.c:2286
724 2053 19 :

['capabilities_to_zhaoxin_edx', 'check_avx_movbe', 'check_phe_partial', 'capabilities_to_intel_cpuid', 'check_padlock', 'check_sha', 'check_phe', '_gnutls_priority_update_non_aesni', 'gnutls_crypto_single_cipher_register', 'read_cpuid_vals', 'gnutls_crypto_single_mac_register', 'gnutls_crypto_single_digest_register', 'check_pclmul', 'check_fast_pclmul', '_gnutls_log', 'check_optimized_aes', 'check_ssse3', 'padlock_capability', 'check_phe_sha512']

724 2053 register_x86_padlock_crypto call site: 00000 /src/gnutls/lib/accelerated/x86/x86-common.c:383
552 552 1 :

['quote_n']

554 554 do_conversion call site: 00021 /src/wget/src/iri.c:138
47 47 1 :

['capabilities_to_intel_cpuid']

439 1303 register_x86_intel_crypto call site: 00000 /src/gnutls/lib/accelerated/x86/x86-common.c:817
31 31 4 :

['iconv', '__errno_location', 'gettext', 'xrealloc']

43 51 do_conversion call site: 00181 /src/wget/src/iri.c:157
18 18 1 :

['_gnutls_asn2err']

40 40 _gnutls_global_init call site: 00000 /src/gnutls/lib/global.c:306
16 16 1 :

['_asn1_delete_list_and_nodes']

16 16 asn1_array2tree call site: 00000 /src/gnutls/lib/minitasn1/structure.c:275
12 12 2 :

['_gnutls_log', 'atoi']

22 1565 lib_init call site: 00000 /src/gnutls/lib/global.c:520
10 10 1 :

['_gnutls_log']

10 10 register_x86_intel_crypto call site: 00000 /src/gnutls/lib/accelerated/x86/x86-common.c:1027
10 10 1 :

['_gnutls_log']

10 10 _algo_register call site: 00000 /src/gnutls/lib/crypto-backend.c:67
10 10 1 :

['_gnutls_log']

10 10 _algo_register call site: 00000 /src/gnutls/lib/crypto-backend.c:87

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 dup [call site] 00001
1 open [call site] 00002
1 dup2 [call site] 00003
1 close [call site] 00004
1 url_parse [function] [call site] 00005
2 url_scheme [function] [call site] 00006
3 strlen [call site] 00007
3 c_strncasecmp [function] [call site] 00008
2 url_has_scheme [function] [call site] 00011
2 c_strncasecmp [function] [call site] 00014
2 c_strncasecmp [function] [call site] 00015
2 remote_to_utf8 [function] [call site] 00016
3 c_strcasecmp [function] [call site] 00017
3 strdup [call site] 00018
3 strlen [call site] 00019
3 do_conversion [function] [call site] 00020
4 iconv_open [call site] 00021
4 gettext [call site] 00022
4 quote_n [function] [call site] 00023
5 quote_n_mem [function] [call site] 00024
6 quotearg_n_options [function] [call site] 00025
7 __errno_location [call site] 00026
7 abort [call site] 00027
7 xpalloc [function] [call site] 00028
8 xalloc_die [function] [call site] 00029
9 dgettext [call site] 00030
9 error [call site] 00031
9 abort [call site] 00032
8 xrealloc [function] [call site] 00033
9 rpl_realloc [function] [call site] 00034
10 realloc [call site] 00035
9 xalloc_die [function] [call site] 00036
7 quotearg_buffer_restyled [function] [call site] 00037
8 __ctype_get_mb_cur_max [call site] 00038
8 gettext_quote [function] [call site] 00039
9 dgettext [call site] 00040
9 locale_charset [function] [call site] 00041
10 rpl_nl_langinfo [function] [call site] 00042
11 nl_langinfo [call site] 00043
9 c_strcasecmp [function] [call site] 00044
9 c_strcasecmp [function] [call site] 00045
8 gettext_quote [function] [call site] 00046
8 strlen [call site] 00047
8 abort [call site] 00048
8 strlen [call site] 00049
8 memcmp [call site] 00050
8 __ctype_b_loc [call site] 00051
8 strlen [call site] 00053
8 rpl_mbrtoc32 [function] [call site] 00054
9 mbrtoc32 [call site] 00055
9 hard_locale [function] [call site] 00056
10 setlocale_null_r [function] [call site] 00057
11 setlocale_null_r_unlocked [function] [call site] 00058
12 setlocale_null_unlocked [function] [call site] 00059
13 setlocale [call site] 00060
12 strlen [call site] 00061
10 strcmp [call site] 00062
8 c32isprint [function] [call site] 00063
9 iswprint [call site] 00064
8 mbsinit [call site] 00065
8 quotearg_buffer_restyled [function] [call site] 00066
9 quotearg_buffer_restyled [function] [call site] 00067
7 rpl_free [function] [call site] 00068
8 __errno_location [call site] 00069
8 __errno_location [call site] 00070
7 xcharalloc [function] [call site] 00071
8 xmalloc [function] [call site] 00072
9 check_nonnull [function] [call site] 00073
10 xalloc_die [function] [call site] 00074
7 quotearg_buffer_restyled [function] [call site] 00075
7 __errno_location [call site] 00076
4 logprintf [function] [call site] 00077
5 __errno_location [call site] 00078
5 check_redirect_output [function] [call site] 00079
6 tcgetpgrp [call site] 00080
6 getpgrp [call site] 00081
6 redirect_output [function] [call site] 00082
7 fprintf [call site] 00083
7 unique_create [function] [call site] 00084
8 unique_name [function] [call site] 00085
9 file_exists_p [function] [call site] 00086
10 __errno_location [call site] 00087
10 stat [call site] 00088
10 getuid [call site] 00089
10 group_member [call site] 00090
10 __errno_location [call site] 00091
10 __errno_location [call site] 00092
9 unique_name_1 [function] [call site] 00093
10 strlen [call site] 00094
10 number_to_string [function] [call site] 00096
10 file_exists_p [function] [call site] 00097
9 xstrdup [function] [call site] 00098
10 strlen [call site] 00099
8 fopen_excl [function] [call site] 00102
9 open [call site] 00103
9 fdopen [call site] 00104
8 __errno_location [call site] 00105
8 unique_name [function] [call site] 00107
7 gettext [call site] 00110
7 fprintf [call site] 00113
7 log_dump_context [function] [call site] 00114
8 get_log_fp [function] [call site] 00115
8 get_warc_log_fp [function] [call site] 00116
8 fputs [call site] 00117
8 fputs [call site] 00118
8 fputs [call site] 00119
8 fputs [call site] 00120
8 rpl_fflush [function] [call site] 00121
9 __freading [call site] 00122
9 fflush [call site] 00123
9 clear_ungetc_buffer_preserving_position [function] [call site] 00124
10 rpl_fseeko [function] [call site] 00125
11 fileno [call site] 00126
11 lseek [call site] 00127
11 fseeko [call site] 00128
9 fflush [call site] 00129
8 rpl_fflush [function] [call site] 00130
7 gettext [call site] 00131
7 __errno_location [call site] 00132
7 strerror [call site] 00133
7 fprintf [call site] 00134
7 gettext [call site] 00135
7 fprintf [call site] 00137
7 log_dump_context [function] [call site] 00138
7 log_dump_context [function] [call site] 00139
6 redirect_output [function] [call site] 00140
5 __errno_location [call site] 00141
5 log_vprintf_internal [function] [call site] 00142
6 get_log_fp [function] [call site] 00143
6 get_warc_log_fp [function] [call site] 00144
6 vfprintf [call site] 00145
6 vsnprintf [call site] 00146
6 saved_append [function] [call site] 00149
7 strchr [call site] 00150
7 strlen [call site] 00151
7 saved_append_1 [function] [call site] 00152
8 free_log_line [function] [call site] 00153
8 strlen [call site] 00158
8 strlen [call site] 00160
6 fputs [call site] 00162
6 fputs [call site] 00163
6 logflush [function] [call site] 00165
7 get_log_fp [function] [call site] 00166
7 get_warc_log_fp [function] [call site] 00167
7 rpl_fflush [function] [call site] 00168
7 rpl_fflush [function] [call site] 00169
5 __errno_location [call site] 00170
5 exit_wget [function] [call site] 00171
4 xstrndup [function] [call site] 00172
5 strndup [call site] 00173
5 xalloc_die [function] [call site] 00174
4 url_unescape_except_reserved [function] [call site] 00175
5 url_unescape_1 [function] [call site] 00176
4 strlen [call site] 00179
4 iconv [call site] 00181
4 iconv [call site] 00182
4 iconv_close [call site] 00184
4 strchr [call site] 00185
4 debug_logprintf [function] [call site] 00186
5 log_vprintf_internal [function] [call site] 00187
4 debug_logprintf [function] [call site] 00188
4 __errno_location [call site] 00189
4 gettext [call site] 00190
4 logprintf [function] [call site] 00191
4 __errno_location [call site] 00192
4 gettext [call site] 00194
4 __errno_location [call site] 00195
4 logprintf [function] [call site] 00196
4 iconv_close [call site] 00198
4 strchr [call site] 00199
4 debug_logprintf [function] [call site] 00200
4 debug_logprintf [function] [call site] 00201
3 strcmp [call site] 00202
2 reencode_escapes [function] [call site] 00206
3 char_needs_escaping [function] [call site] 00207
4 c_isxdigit [function] [call site] 00208
3 char_needs_escaping [function] [call site] 00210
2 reencode_escapes [function] [call site] 00212
2 strlen [call site] 00213
2 url_skip_credentials [function] [call site] 00214
3 c_isalnum [function] [call site] 00215
3 strchr [call site] 00216
3 c_isxdigit [function] [call site] 00217
2 init_seps [function] [call site] 00218
2 strchr [call site] 00219
2 is_valid_ipv6_address [function] [call site] 00220
3 c_isxdigit [function] [call site] 00221
3 is_valid_ipv4_address [function] [call site] 00223
2 strchr [call site] 00224
2 strpbrk_or_eos [function] [call site] 00225
3 strpbrk [call site] 00226
3 strchr [call site] 00227
2 scheme_default_port [function] [call site] 00228
2 strpbrk_or_eos [function] [call site] 00229
2 c_isdigit [function] [call site] 00230
2 strpbrk_or_eos [function] [call site] 00231
2 strpbrk_or_eos [function] [call site] 00232
2 strpbrk_or_eos [function] [call site] 00233
2 strpbrk_or_eos [function] [call site] 00234
2 parse_credentials [function] [call site] 00235
3 memchr [call site] 00236
3 strdupdelim [function] [call site] 00237
3 url_unescape [function] [call site] 00238
4 url_unescape_1 [function] [call site] 00239
3 strdupdelim [function] [call site] 00240
3 url_unescape [function] [call site] 00241
2 xcalloc [function] [call site] 00242
3 calloc [call site] 00243
3 check_nonnull [function] [call site] 00244
2 strdupdelim [function] [call site] 00245
2 strdupdelim [function] [call site] 00246
2 path_simplify [function] [call site] 00247
3 strchr [call site] 00248
2 split_path [function] [call site] 00249
3 strrchr [call site] 00250
3 strdupdelim [function] [call site] 00253
3 url_unescape [function] [call site] 00255
3 url_unescape [function] [call site] 00256
2 lowercase_str [function] [call site] 00257
2 strchr [call site] 00260
2 url_unescape [function] [call site] 00261
2 c_iscntrl [function] [call site] 00262
2 idn_encode [function] [call site] 00275
3 remote_to_utf8 [function] [call site] 00276
3 idn2_lookup_u8 [function] [call site] 00277
4 set_default_flags [function] [call site] 00278
4 _tr46 [function] [call site] 00279
5 u8_strlen [function] [call site] 00280
6 strlen [call site] 00281
5 u8_to_u32 [function] [call site] 00282
6 u8_mbtoucr [function] [call site] 00283
6 __errno_location [call site] 00284
6 realloc [call site] 00285
6 __errno_location [call site] 00286
6 __errno_location [call site] 00287
6 realloc [call site] 00288
5 __errno_location [call site] 00289
5 get_idna_map [function] [call site] 00290
6 bsearch [call site] 00291
6 _compare_idna_map [function] [call site] 00292
7 _fill_map [function] [call site] 00293
6 bsearch [call site] 00294
6 _compare_idna_map [function] [call site] 00295
6 bsearch [call site] 00296
6 _compare_idna_map [function] [call site] 00297
6 _fill_map [function] [call site] 00298
5 get_idna_map [function] [call site] 00309
5 get_map_data [function] [call site] 00312
5 get_map_data [function] [call site] 00316
5 get_map_data [function] [call site] 00319
5 u32_normalize [function] [call site] 00321
6 u32_mbtouc_unsafe [function] [call site] 00322
6 abort [call site] 00323
6 abort [call site] 00324
6 uc_combining_class [function] [call site] 00325
6 gl_uninorm_decompose_merge_sort_inplace [function] [call site] 00326
7 gl_uninorm_decompose_merge_sort_inplace [function] [call site] 00327
8 gl_uninorm_decompose_merge_sort_fromto [function] [call site] 00328
9 gl_uninorm_decompose_merge_sort_fromto [function] [call site] 00329
10 gl_uninorm_decompose_merge_sort_fromto [function] [call site] 00330
6 u32_uctomb [function] [call site] 00333
6 __errno_location [call site] 00334
6 abort [call site] 00335
6 __errno_location [call site] 00336
6 __errno_location [call site] 00337
6 realloc [call site] 00339
6 __errno_location [call site] 00340
6 u32_uctomb [function] [call site] 00341
6 __errno_location [call site] 00342
6 abort [call site] 00343
6 abort [call site] 00344
6 __errno_location [call site] 00345
6 __errno_location [call site] 00346
6 realloc [call site] 00347
6 abort [call site] 00348
6 __errno_location [call site] 00349
6 __errno_location [call site] 00350
5 __errno_location [call site] 00352
5 u32_to_u8 [function] [call site] 00353
6 u8_uctomb [function] [call site] 00354
6 __errno_location [call site] 00355
6 realloc [call site] 00356
6 __errno_location [call site] 00357
6 u8_uctomb [function] [call site] 00358
6 abort [call site] 00359
6 __errno_location [call site] 00360
6 realloc [call site] 00361
5 __errno_location [call site] 00363
5 idn2_punycode_decode [function] [call site] 00364
5 _idn2_label_test [function] [call site] 00369
6 u32_normalize [function] [call site] 00370
6 __errno_location [call site] 00371
6 memcmp [call site] 00372
6 uc_is_general_category [function] [call site] 00374
7 bitmap_lookup [function] [call site] 00375
6 _idn2_disallowed_p [function] [call site] 00376
7 property [function] [call site] 00377
8 bsearch [call site] 00378
6 get_idna_map [function] [call site] 00380
6 _idn2_contextj_p [function] [call site] 00383
6 _idn2_contextj_rule [function] [call site] 00385
7 _idn2_contextj_p [function] [call site] 00386
7 uc_combining_class [function] [call site] 00387
7 uc_joining_type [function] [call site] 00388
8 uc_is_general_category_withtable [function] [call site] 00389
9 lookup_withtable [function] [call site] 00390
7 uc_joining_type [function] [call site] 00391
7 uc_combining_class [function] [call site] 00392
6 _idn2_contexto_p [function] [call site] 00393
6 _idn2_contexto_p [function] [call site] 00395
6 _idn2_contexto_with_rule [function] [call site] 00396
6 _idn2_contexto_rule [function] [call site] 00397
7 _idn2_contexto_p [function] [call site] 00398
7 _uc_script_name [function] [call site] 00399
8 uc_script [function] [call site] 00400
7 strcmp [call site] 00401
7 _uc_script_name [function] [call site] 00402
7 strcmp [call site] 00403
7 _uc_script_name [function] [call site] 00404
7 strcmp [call site] 00405
7 _uc_script_name [function] [call site] 00406
7 strcmp [call site] 00407
7 _uc_script_name [function] [call site] 00408
7 strcmp [call site] 00409
6 _idn2_unassigned_p [function] [call site] 00410
6 _idn2_bidi [function] [call site] 00412
7 _isBidi [function] [call site] 00413
8 uc_bidi_category [function] [call site] 00414
9 uc_bidi_class [function] [call site] 00415
7 uc_bidi_category [function] [call site] 00416
7 uc_bidi_category [function] [call site] 00417
7 uc_bidi_category [function] [call site] 00418
6 get_idna_map [function] [call site] 00419
5 _idn2_label_test [function] [call site] 00423
5 u32_to_u8 [function] [call site] 00424
5 __errno_location [call site] 00426
4 strchrnul [call site] 00428
4 label [function] [call site] 00429
5 _idn2_ascii_p [function] [call site] 00430
5 memcmp [call site] 00431
5 idn2_punycode_decode [function] [call site] 00432
5 u32_to_u8 [function] [call site] 00433
5 __errno_location [call site] 00434
5 _idn2_u8_to_u32_nfc [function] [call site] 00435
6 u8_to_u32 [function] [call site] 00436
6 __errno_location [call site] 00437
6 _isNFC [function] [call site] 00438
7 uc_combining_class [function] [call site] 00439
7 get_nfcqc_map [function] [call site] 00440
8 bsearch [call site] 00441
8 _compare_nfcqc_map [function] [call site] 00442
6 u32_normalize [function] [call site] 00443
6 __errno_location [call site] 00445
5 _idn2_label_test [function] [call site] 00446
5 idn2_punycode_encode [function] [call site] 00447
6 encode_digit [function] [call site] 00448
6 encode_digit [function] [call site] 00449
5 c_strncasecmp [function] [call site] 00451
5 idn2_punycode_decode [function] [call site] 00454
3 idn2_lookup_u8 [function] [call site] 00462
3 gettext [call site] 00463
3 idn2_strerror [function] [call site] 00464
3 logprintf [function] [call site] 00466
2 strdupdelim [function] [call site] 00472
2 strdupdelim [function] [call site] 00473
2 strdupdelim [function] [call site] 00474
2 url_string [function] [call site] 00475
3 full_path_length [function] [call site] 00476
4 strlen [call site] 00477
4 strlen [call site] 00478
4 strlen [call site] 00479
3 url_escape_allow_passthrough [function] [call site] 00480
3 url_escape_allow_passthrough [function] [call site] 00484
3 url_escape_allow_passthrough [function] [call site] 00485
3 unescape_single_char [function] [call site] 00486
3 strchr [call site] 00487
3 strlen [call site] 00488
3 strlen [call site] 00489
3 strlen [call site] 00491
3 strlen [call site] 00492
3 strlen [call site] 00494
3 strlen [call site] 00495
3 strlen [call site] 00496
3 strlen [call site] 00497
3 number_to_string [function] [call site] 00498
3 full_path_write [function] [call site] 00499
4 strlen [call site] 00500
4 strlen [call site] 00501
4 strlen [call site] 00502
1 url_parse [function] [call site] 00510
1 url_parse [function] [call site] 00512
1 url_parse [function] [call site] 00514
1 dup2 [call site] 00518
1 close [call site] 00519