Fuzz introspector: fuzz_request
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
16 47 itostr call site: 00047 log_buffer_vsprintf
13 318 http_request_headers_process call site: 00318 log_pri_multiline
11 14 http_request_parse_reqline call site: 00014 log_debug
11 64 buffer_append_string_len call site: 00064 log_error_append_strerror
10 218 burl_contains_ctrls call site: 00218 burl_normalize_path
8 76 buffer_append_char call site: 00076 write_all
8 232 buffer_blank call site: 00232 buffer_append_string_len
7 169 http_request_parse_single_header call site: 00169 http_request_header_line_invalid
6 35 buffer_string_prepare_append_resize call site: 00035 buffer_copy_string_len
6 311 http_request_parse call site: 00311 http_request_header_line_invalid
4 6 buffer_init call site: 00006 ck_bt_stderr
4 42 buffer_copy_string_len call site: 00042 log_buffer_prefix

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 http_header_parse_hoff [function] [call site] 00001
2 memchr [call site] 00002
2 http_header_parse_unfold_impl [function] [call site] 00003
1 buffer_init [function] [call site] 00004
2 calloc [call site] 00005
2 ck_assert_failed [function] [call site] 00006
3 ck_bt_stderr [function] [call site] 00007
4 fprintf [call site] 00008
4 fflush [call site] 00009
3 abort [call site] 00010
1 http_request_headers_process [function] [call site] 00011
2 http_request_parse_hoff [function] [call site] 00012
3 http_request_parse_reqline [function] [call site] 00013
4 http_request_header_line_invalid [function] [call site] 00014
5 log_debug [function] [call site] 00015
6 log_va_list [function] [call site] 00016
7 __errno_location [call site] 00017
7 log_buffer_prepare [function] [call site] 00018
8 buffer_clear [function] [call site] 00019
8 log_buffer_timestamp [function] [call site] 00020
9 clock_gettime [call site] 00021
9 log_buffer_tstr [function] [call site] 00022
10 localtime_r [call site] 00023
10 strftime [call site] 00024
9 buffer_append_str2 [function] [call site] 00025
10 buffer_extend [function] [call site] 00026
11 buffer_string_prepare_append_resize [function] [call site] 00027
12 buffer_string_prepare_copy [function] [call site] 00028
13 buffer_alloc_replace [function] [call site] 00029
14 buffer_realloc [function] [call site] 00030
15 ck_assert_failed [function] [call site] 00031
15 realloc [call site] 00032
15 ck_assert_failed [function] [call site] 00033
12 ck_assert_failed [function] [call site] 00034
12 buffer_realloc [function] [call site] 00035
9 li_utostrn [function] [call site] 00036
10 utostr [function] [call site] 00037
10 ck_assert_failed [function] [call site] 00038
9 buffer_clen [function] [call site] 00039
9 log_buffer_tstr [function] [call site] 00040
9 buffer_copy_string_len [function] [call site] 00041
10 buffer_alloc_replace [function] [call site] 00042
8 log_buffer_prefix [function] [call site] 00043
9 strlen [call site] 00044
9 li_itostrn [function] [call site] 00045
10 itostr [function] [call site] 00046
11 utostr [function] [call site] 00047
10 ck_assert_failed [function] [call site] 00048
9 buffer_append_iovec [function] [call site] 00049
10 buffer_extend [function] [call site] 00050
7 log_buffer_vsprintf [function] [call site] 00051
8 buffer_clen [function] [call site] 00052
8 buffer_string_space [function] [call site] 00053
8 vsnprintf [call site] 00054
8 buffer_truncate [function] [call site] 00055
8 buffer_extend [function] [call site] 00056
8 vsnprintf [call site] 00057
8 ck_malloc [function] [call site] 00058
9 ck_assert_failed [function] [call site] 00059
8 buffer_truncate [function] [call site] 00060
8 buffer_append_string_c_escaped [function] [call site] 00061
9 light_isprint [function] [call site] 00062
9 buffer_append_string_len [function] [call site] 00063
10 buffer_extend [function] [call site] 00064
9 buffer_extend [function] [call site] 00065
9 light_isprint [function] [call site] 00066
7 log_error_append_strerror [function] [call site] 00067
8 ck_strerror_s [function] [call site] 00068
9 strerror_r [call site] 00069
9 strlen [call site] 00070
9 snprintf [call site] 00071
8 strlen [call site] 00072
8 buffer_append_str2 [function] [call site] 00073
7 log_error_write [function] [call site] 00074
8 buffer_append_char [function] [call site] 00075
9 buffer_extend [function] [call site] 00076
8 buffer_clen [function] [call site] 00077
8 write_all [function] [call site] 00078
9 write [call site] 00079
9 __errno_location [call site] 00080
9 __errno_location [call site] 00081
8 syslog [call site] 00082
7 buffer_clear [function] [call site] 00083
7 __errno_location [call site] 00084
4 http_request_header_line_invalid [function] [call site] 00085
4 http_request_header_line_invalid [function] [call site] 00086
4 http_request_header_line_invalid [function] [call site] 00087
4 http_method_key_get [function] [call site] 00088
5 memcmp [call site] 00089
4 http_request_header_line_invalid [function] [call site] 00090
4 http_request_header_line_invalid [function] [call site] 00091
4 http_request_parse_reqline_uri [function] [call site] 00092
5 buffer_eq_icase_ssn [function] [call site] 00093
6 light_isalpha [function] [call site] 00094
5 memchr [call site] 00095
5 buffer_eq_icase_ssn [function] [call site] 00096
5 memchr [call site] 00097
5 http_request_header_line_invalid [function] [call site] 00098
5 http_request_header_set_Host [function] [call site] 00099
6 http_header_request_set_ptr [function] [call site] 00100
7 array_get_buf_ptr_ext [function] [call site] 00101
8 array_get_index_ext [function] [call site] 00102
9 array_keycmpb [function] [call site] 00103
10 array_keycmp [function] [call site] 00104
11 array_caseless_compare [function] [call site] 00105
8 array_insert_string_at_pos [function] [call site] 00106
9 array_get_unused_element [function] [call site] 00107
9 array_data_string_init [function] [call site] 00108
10 ck_calloc [function] [call site] 00109
11 calloc [call site] 00110
11 ck_assert_failed [function] [call site] 00111
9 array_insert_data_at_pos [function] [call site] 00112
10 array_extend [function] [call site] 00113
11 ck_assert_failed [function] [call site] 00114
11 ck_realloc_u32 [function] [call site] 00115
12 ck_assert_failed [function] [call site] 00116
12 realloc [call site] 00117
12 ck_assert_failed [function] [call site] 00118
11 ck_realloc_u32 [function] [call site] 00119
8 buffer_copy_string_len [function] [call site] 00120
8 buffer_clear [function] [call site] 00121
7 buffer_clear [function] [call site] 00122
6 buffer_copy_string_len_lc [function] [call site] 00123
7 buffer_string_prepare_copy [function] [call site] 00124
5 light_isdigit [function] [call site] 00125
5 http_request_header_line_invalid [function] [call site] 00126
4 http_request_header_line_invalid [function] [call site] 00127
4 http_request_check_uri_strict [function] [call site] 00128
4 memchr [call site] 00129
4 http_request_header_char_invalid [function] [call site] 00130
5 log_debug [function] [call site] 00131
5 log_debug [function] [call site] 00132
4 buffer_copy_string_len [function] [call site] 00133
4 buffer_copy_string_len [function] [call site] 00134
3 http_request_parse_headers [function] [call site] 00135
4 memchr [call site] 00136
4 http_request_header_line_invalid [function] [call site] 00137
4 http_request_header_line_invalid [function] [call site] 00138
4 http_request_header_line_invalid [function] [call site] 00139
4 http_header_hkey_get [function] [call site] 00140
5 buffer_eq_icase_ssn [function] [call site] 00141
4 http_request_field_check_name [function] [call site] 00142
5 light_isalpha [function] [call site] 00143
5 http_request_parse_header_other [function] [call site] 00144
6 light_isalpha [function] [call site] 00145
4 http_request_header_char_invalid [function] [call site] 00146
4 http_request_header_line_invalid [function] [call site] 00147
4 http_request_header_line_invalid [function] [call site] 00148
4 http_request_check_line_strict [function] [call site] 00149
4 http_request_header_char_invalid [function] [call site] 00150
4 http_request_parse_single_header [function] [call site] 00151
5 http_request_header_line_invalid [function] [call site] 00152
5 http_request_header_set_Host [function] [call site] 00153
5 buffer_eq_slen [function] [call site] 00154
6 memcmp [call site] 00155
5 http_request_parse_duplicate [function] [call site] 00156
6 http_header_request_get [function] [call site] 00157
7 http_header_generic_get_ifnotempty [function] [call site] 00158
8 array_get_element_klen_ext [function] [call site] 00159
9 array_get_index_ext [function] [call site] 00160
8 buffer_is_blank [function] [call site] 00161
6 buffer_eq_icase_slen [function] [call site] 00162
7 buffer_eq_icase_ssn [function] [call site] 00163
6 http_request_header_line_invalid [function] [call site] 00164
5 http_request_header_line_invalid [function] [call site] 00165
5 buffer_eq_icase_ssn [function] [call site] 00166
5 http_header_str_contains_token [function] [call site] 00167
6 buffer_eq_icase_ssn [function] [call site] 00168
5 http_header_str_contains_token [function] [call site] 00169
5 li_restricted_strtoint64 [function] [call site] 00170
5 http_request_header_line_invalid [function] [call site] 00171
5 http_request_header_line_invalid [function] [call site] 00172
5 http_request_header_line_invalid [function] [call site] 00173
5 buffer_eq_icase_ss [function] [call site] 00174
6 buffer_eq_icase_ssn [function] [call site] 00175
5 http_request_header_line_invalid [function] [call site] 00176
5 http_header_request_append [function] [call site] 00177
6 array_get_buf_ptr_ext [function] [call site] 00178
6 http_header_token_append [function] [call site] 00179
7 buffer_is_blank [function] [call site] 00180
7 buffer_append_string_len [function] [call site] 00181
7 buffer_append_string_len [function] [call site] 00182
6 http_header_token_append_cookie [function] [call site] 00183
7 buffer_is_blank [function] [call site] 00184
7 buffer_append_string_len [function] [call site] 00185
7 buffer_append_string_len [function] [call site] 00186
4 http_request_header_line_invalid [function] [call site] 00187
3 http_request_parse [function] [call site] 00188
4 http_request_parse_target [function] [call site] 00189
5 buffer_copy_string_len [function] [call site] 00190
5 buffer_copy_buffer [function] [call site] 00191
6 buffer_clen [function] [call site] 00192
6 buffer_copy_string_len [function] [call site] 00193
5 buffer_clear [function] [call site] 00194
5 burl_normalize [function] [call site] 00195
6 burl_normalize_basic_required [function] [call site] 00196
7 buffer_clen [function] [call site] 00197
7 buffer_truncate [function] [call site] 00198
7 burl_normalize_basic_required_fix [function] [call site] 00199
8 buffer_clen [function] [call site] 00200
8 buffer_string_prepare_copy [function] [call site] 00201
8 buffer_copy_string_len [function] [call site] 00202
6 burl_normalize_basic_unreserved [function] [call site] 00203
7 buffer_clen [function] [call site] 00204
7 burl_is_unreserved [function] [call site] 00205
8 light_isalnum [function] [call site] 00206
9 light_isdigit [function] [call site] 00207
9 light_isalpha [function] [call site] 00208
7 buffer_truncate [function] [call site] 00209
7 burl_normalize_basic_unreserved_fix [function] [call site] 00210
8 buffer_clen [function] [call site] 00211
8 buffer_string_prepare_copy [function] [call site] 00212
8 burl_is_unreserved [function] [call site] 00213
8 buffer_copy_string_len [function] [call site] 00214
6 burl_scan_qmark [function] [call site] 00215
7 strchr [call site] 00216
6 burl_contains_ctrls [function] [call site] 00217
7 buffer_clen [function] [call site] 00218
6 burl_normalize_2F_to_slash [function] [call site] 00219
7 buffer_clen [function] [call site] 00220
7 burl_normalize_2F_to_slash_fix [function] [call site] 00221
8 buffer_clen [function] [call site] 00222
8 buffer_truncate [function] [call site] 00223
6 burl_normalize_path [function] [call site] 00224
7 buffer_clen [function] [call site] 00225
7 buffer_copy_string_len [function] [call site] 00226
7 buffer_truncate [function] [call site] 00227
7 buffer_path_simplify [function] [call site] 00228
8 buffer_is_blank [function] [call site] 00229
8 buffer_blank [function] [call site] 00230
9 buffer_truncate [function] [call site] 00231
9 buffer_extend [function] [call site] 00232
7 buffer_clen [function] [call site] 00233
7 buffer_clen [function] [call site] 00234
7 buffer_append_string_len [function] [call site] 00235
6 burl_normalize_qs20_to_plus [function] [call site] 00236
7 buffer_clen [function] [call site] 00237
7 burl_normalize_qs20_to_plus_fix [function] [call site] 00238
8 buffer_clen [function] [call site] 00239
8 buffer_truncate [function] [call site] 00240
5 http_request_header_line_invalid [function] [call site] 00241
5 buffer_clen [function] [call site] 00242
5 memchr [call site] 00243
5 buffer_truncate [function] [call site] 00244
5 memchr [call site] 00245
5 buffer_clen [function] [call site] 00246
5 buffer_copy_string_len [function] [call site] 00247
5 buffer_clear [function] [call site] 00248
5 buffer_copy_string_len [function] [call site] 00249
5 buffer_urldecode_path [function] [call site] 00250
6 buffer_clen [function] [call site] 00251
6 memchr [call site] 00252
6 hex2int [function] [call site] 00253
6 hex2int [function] [call site] 00254
5 buffer_path_simplify [function] [call site] 00255
5 http_request_header_line_invalid [function] [call site] 00256
4 http_request_host_policy [function] [call site] 00257
5 request_check_hostname [function] [call site] 00258
6 buffer_clen [function] [call site] 00259
6 memchr [call site] 00260
6 buffer_truncate [function] [call site] 00261
6 light_isdigit [function] [call site] 00262
6 light_isalpha [function] [call site] 00263
6 light_isxdigit [function] [call site] 00264
7 light_isdigit [function] [call site] 00265
6 buffer_truncate [function] [call site] 00266
6 light_isdigit [function] [call site] 00267
5 buffer_clen [function] [call site] 00268
5 http_request_check_line_minimal [function] [call site] 00269
5 http_request_host_normalize [function] [call site] 00270
6 buffer_clen [function] [call site] 00271
6 memchr [call site] 00272
6 strtol [call site] 00273
6 buffer_truncate [function] [call site] 00274
6 light_isdigit [function] [call site] 00275
6 memcmp [call site] 00276
6 sock_addr_inet_pton [function] [call site] 00277
7 htons [call site] 00278
7 inet_pton [call site] 00279
7 htons [call site] 00280
7 inet_pton [call site] 00281
7 __errno_location [call site] 00282
6 sock_addr_inet_ntop_copy_buffer [function] [call site] 00283
7 sock_addr_inet_ntop [function] [call site] 00284
8 inet_ntop [call site] 00285
8 inet_ntop [call site] 00286
8 __errno_location [call site] 00287
7 buffer_copy_string [function] [call site] 00288
8 strlen [call site] 00289
8 buffer_copy_string_len [function] [call site] 00290
6 buffer_clen [function] [call site] 00291
6 strchr [call site] 00292
6 memchr [call site] 00293
6 strtol [call site] 00294
6 memcmp [call site] 00295
6 buffer_truncate [function] [call site] 00296
6 sock_addr_inet_pton [function] [call site] 00297
6 sock_addr_inet_ntop [function] [call site] 00298
6 strlen [call site] 00299
6 buffer_truncate [function] [call site] 00300
6 buffer_append_str2 [function] [call site] 00301
6 buffer_append_char [function] [call site] 00302
6 buffer_append_int [function] [call site] 00303
7 itostr [function] [call site] 00304
7 buffer_append_string_len [function] [call site] 00305
4 http_request_header_line_invalid [function] [call site] 00306
4 buffer_copy_buffer [function] [call site] 00307
4 buffer_copy_string_len [function] [call site] 00308
4 http_request_header_line_invalid [function] [call site] 00309
4 http_request_header_line_invalid [function] [call site] 00310
4 http_request_header_line_invalid [function] [call site] 00311
4 http_request_header_line_invalid [function] [call site] 00312
4 http_header_request_unset [function] [call site] 00313
5 http_header_set_key_value [function] [call site] 00314
6 array_get_buf_ptr_ext [function] [call site] 00315
6 buffer_copy_string_len [function] [call site] 00316
4 http_request_header_line_invalid [function] [call site] 00317
2 http_request_headers_fin [function] [call site] 00318
2 log_pri_multiline [function] [call site] 00319
3 __errno_location [call site] 00320
3 log_buffer_prepare [function] [call site] 00321
3 log_buffer_vsprintf [function] [call site] 00322
3 buffer_clen [function] [call site] 00323
3 strchr [call site] 00324
3 buffer_truncate [function] [call site] 00325
3 log_buffer_append_encoded [function] [call site] 00326
4 buffer_append_string_len [function] [call site] 00327
4 buffer_append_string_c_escaped [function] [call site] 00328
3 log_error_write [function] [call site] 00329
3 buffer_clear [function] [call site] 00330
3 __errno_location [call site] 00331
1 buffer_free [function] [call site] 00332
1 array_free_data [function] [call site] 00333
1 buffer_free_ptr [function] [call site] 00334
1 buffer_free_ptr [function] [call site] 00335
1 buffer_free_ptr [function] [call site] 00336
1 buffer_free_ptr [function] [call site] 00337
1 buffer_free_ptr [function] [call site] 00338
1 buffer_free_ptr [function] [call site] 00339
1 buffer_free_ptr [function] [call site] 00340
1 buffer_free_ptr [function] [call site] 00341
1 buffer_free_ptr [function] [call site] 00342
1 buffer_free_ptr [function] [call site] 00343
1 buffer_free_ptr [function] [call site] 00344