Fuzz introspector: libwget_tlssess_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
33 33 5 :

['__freading', 'rpl_fflush', 'fileno', 'lseek', '__errno_location']

35 35 rpl_fclose call site: 00138 /src/wget2/lib/fclose.c:66
11 11 1 :

['buffer_realloc']

11 11 wget_buffer_memcat call site: 00027 /src/wget2/libwget/buffer.c:384
10 10 4 :

['open', 'fdopen', 'close', '__errno_location']

10 10 rpl_fopen call site: 00122 /src/wget2/lib/fopen.c:211
6 6 2 :

['gettext', '__errno_location']

6 6 getline_internal call site: 00190 /src/wget2/libwget/io.c:123
2 2 1 :

['gettext']

2 2 wget_tls_session_db_load call site: 00180 /src/wget2/libwget/tls_session.c:354
0 34 1 :

['rpl_fclose']

2 36 wget_update_file call site: 00177 /src/wget2/libwget/io.c:520
0 9 1 :

['wget_tls_session_free']

0 31 wget_tls_session_db_add call site: 00219 /src/wget2/libwget/tls_session.c:219
0 0 None 161 645 wget_buffer_vprintf_append call site: 00026 /src/wget2/libwget/buffer_printf.c:346
0 0 None 161 645 wget_buffer_vprintf_append call site: 00031 /src/wget2/libwget/buffer_printf.c:368
0 0 None 161 645 wget_buffer_vprintf_append call site: 00034 /src/wget2/libwget/buffer_printf.c:372
0 0 None 161 645 wget_buffer_vprintf_append call site: 00036 /src/wget2/libwget/buffer_printf.c:377
0 0 None 161 645 wget_buffer_vprintf_append call site: 00043 /src/wget2/libwget/buffer_printf.c:395

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 wget_tls_session_db_init [function] [call site] 00001
2 wget_hashmap_create [function] [call site] 00002
3 wget_malloc [function] [call site] 00003
3 wget_calloc [function] [call site] 00004
2 hash_tls_session [function] [call site] 00005
2 compare_tls_session [function] [call site] 00006
3 strcmp [call site] 00007
2 wget_calloc [function] [call site] 00008
2 wget_hashmap_free [function] [call site] 00009
3 wget_hashmap_clear [function] [call site] 00010
2 wget_hashmap_set_key_destructor [function] [call site] 00011
2 wget_tls_session_free [function] [call site] 00012
3 wget_tls_session_deinit [function] [call site] 00013
2 wget_hashmap_set_value_destructor [function] [call site] 00014
2 wget_tls_session_free [function] [call site] 00015
2 wget_thread_mutex_init [function] [call site] 00016
3 wget_malloc [function] [call site] 00017
3 pthread_mutex_init [call site] 00018
1 wget_tls_session_db_load [function] [call site] 00019
2 wget_update_file [function] [call site] 00020
3 wget_aprintf [function] [call site] 00021
4 wget_vasprintf [function] [call site] 00022
5 wget_buffer_init [function] [call site] 00023
6 wget_malloc [function] [call site] 00024
5 wget_buffer_vprintf [function] [call site] 00025
6 wget_buffer_vprintf_append [function] [call site] 00026
7 wget_buffer_memcat [function] [call site] 00027
8 buffer_realloc [function] [call site] 00028
9 wget_realloc [function] [call site] 00029
9 wget_malloc [function] [call site] 00030
7 wget_buffer_strcat [function] [call site] 00031
8 strlen [call site] 00032
8 wget_buffer_memcat [function] [call site] 00033
7 convert_dec_fast [function] [call site] 00034
8 wget_buffer_memcat [function] [call site] 00035
7 wget_buffer_memcat [function] [call site] 00036
7 convert_pointer [function] [call site] 00037
8 wget_buffer_memcat [function] [call site] 00038
8 wget_buffer_memcat [function] [call site] 00039
8 wget_buffer_memcat [function] [call site] 00040
7 wget_buffer_memset_append [function] [call site] 00041
8 buffer_realloc [function] [call site] 00042
7 read_flag_chars [function] [call site] 00043
7 read_field_width [function] [call site] 00044
8 c_isdigit [function] [call site] 00045
7 read_field_width [function] [call site] 00046
7 read_precision [function] [call site] 00047
8 c_isdigit [function] [call site] 00048
8 c_isdigit [function] [call site] 00049
7 read_precision [function] [call site] 00050
7 copy_string [function] [call site] 00051
8 wget_buffer_strcat [function] [call site] 00052
8 strnlen [call site] 00053
8 strlen [call site] 00054
8 wget_buffer_memcat [function] [call site] 00055
8 wget_buffer_memset_append [function] [call site] 00056
8 wget_buffer_memset_append [function] [call site] 00057
8 wget_buffer_memcat [function] [call site] 00058
8 wget_buffer_memcat [function] [call site] 00059
8 wget_buffer_memcat [function] [call site] 00060
7 copy_string [function] [call site] 00061
7 convert_dec [function] [call site] 00062
8 wget_buffer_memset_append [function] [call site] 00063
8 wget_buffer_memset_append [function] [call site] 00064
8 wget_buffer_memcat [function] [call site] 00065
8 wget_buffer_memset_append [function] [call site] 00066
8 wget_buffer_memcat [function] [call site] 00067
8 wget_buffer_memset_append [function] [call site] 00068
8 wget_buffer_memset_append [function] [call site] 00069
8 wget_buffer_memset_append [function] [call site] 00070
8 wget_buffer_memset_append [function] [call site] 00071
8 wget_buffer_memset_append [function] [call site] 00072
8 wget_buffer_memset_append [function] [call site] 00073
8 wget_buffer_memset_append [function] [call site] 00074
8 wget_buffer_memset_append [function] [call site] 00075
8 wget_buffer_memset_append [function] [call site] 00076
8 wget_buffer_memset_append [function] [call site] 00077
8 wget_buffer_memset_append [function] [call site] 00078
8 wget_buffer_memcat [function] [call site] 00079
8 wget_buffer_memset_append [function] [call site] 00080
8 wget_buffer_memset_append [function] [call site] 00081
8 wget_buffer_memcat [function] [call site] 00082
8 wget_buffer_memset_append [function] [call site] 00083
8 wget_buffer_memset_append [function] [call site] 00084
8 wget_buffer_memcat [function] [call site] 00085
7 convert_dec [function] [call site] 00086
7 convert_dec [function] [call site] 00087
7 convert_dec [function] [call site] 00088
7 convert_dec [function] [call site] 00089
7 convert_dec [function] [call site] 00090
7 wget_buffer_memset_append [function] [call site] 00091
5 wget_realloc [function] [call site] 00092
3 base_name [function] [call site] 00093
4 last_component [function] [call site] 00094
4 base_len [function] [call site] 00095
5 strlen [call site] 00096
4 base_len [function] [call site] 00097
4 ximalloc [function] [call site] 00098
5 imalloc [function] [call site] 00099
6 _gl_alloc_nomem [function] [call site] 00100
7 __errno_location [call site] 00101
5 check_nonnull [function] [call site] 00102
6 xalloc_die [function] [call site] 00103
7 dgettext [call site] 00104
7 error [call site] 00105
7 abort [call site] 00106
3 getenv [call site] 00107
3 getenv [call site] 00108
3 getuid [call site] 00109
3 wget_aprintf [function] [call site] 00110
3 getuid [call site] 00111
3 wget_aprintf [function] [call site] 00112
3 open [call site] 00113
3 gettext [call site] 00114
3 __errno_location [call site] 00115
3 wget_error_printf [function] [call site] 00116
3 flock [call site] 00117
3 gettext [call site] 00118
3 __errno_location [call site] 00119
3 wget_error_printf [function] [call site] 00120
3 rpl_fopen [function] [call site] 00121
4 strlen [call site] 00122
4 open [call site] 00123
4 fdopen [call site] 00124
4 __errno_location [call site] 00125
4 close [call site] 00126
4 __errno_location [call site] 00127
4 orig_fopen [function] [call site] 00128
5 fopen [function] [call site] 00129
6 dlsym [call site] 00130
6 strcmp [call site] 00131
6 fmemopen [call site] 00132
3 __errno_location [call site] 00133
3 gettext [call site] 00134
3 __errno_location [call site] 00135
3 wget_error_printf [function] [call site] 00136
3 rpl_fclose [function] [call site] 00137
4 fileno [call site] 00138
4 fclose [call site] 00139
4 __freading [call site] 00140
4 fileno [call site] 00141
4 lseek [call site] 00142
4 rpl_fflush [function] [call site] 00143
5 __freading [call site] 00144
5 fflush [call site] 00145
5 clear_ungetc_buffer_preserving_position [function] [call site] 00146
6 rpl_fseeko [function] [call site] 00147
7 fileno [call site] 00148
7 lseek [call site] 00149
7 fseeko [call site] 00150
5 fflush [call site] 00151
4 __errno_location [call site] 00152
4 fclose [call site] 00153
4 __errno_location [call site] 00154
3 mkstemp [call site] 00155
3 gettext [call site] 00156
3 __errno_location [call site] 00157
3 wget_error_printf [function] [call site] 00158
3 fdopen [call site] 00159
3 unlink [call site] 00160
3 close [call site] 00161
3 gettext [call site] 00162
3 __errno_location [call site] 00163
3 wget_error_printf [function] [call site] 00164
3 unlink [call site] 00165
3 rpl_fclose [function] [call site] 00166
3 unlink [call site] 00167
3 gettext [call site] 00168
3 __errno_location [call site] 00169
3 wget_error_printf [function] [call site] 00170
3 rename [call site] 00171
3 gettext [call site] 00172
3 __errno_location [call site] 00173
3 wget_error_printf [function] [call site] 00174
3 gettext [call site] 00175
3 wget_error_printf [function] [call site] 00176
3 wget_debug_printf [function] [call site] 00177
3 rpl_fclose [function] [call site] 00178
3 close [call site] 00179
2 tls_session_db_load [function] [call site] 00180
3 time [call site] 00181
3 fileno [call site] 00182
3 fstat [call site] 00183
3 wget_getline [function] [call site] 00184
4 getline_internal [function] [call site] 00185
5 wget_calloc [function] [call site] 00186
5 memchr [call site] 00187
5 memchr [call site] 00188
5 wget_realloc [function] [call site] 00189
5 __errno_location [call site] 00190
5 __errno_location [call site] 00191
5 gettext [call site] 00192
5 __errno_location [call site] 00193
5 wget_error_printf [function] [call site] 00194
4 read_fp [function] [call site] 00195
5 fread [call site] 00196
5 ferror [call site] 00197
3 __ctype_b_loc [call site] 00198
3 wget_tls_session_init [function] [call site] 00199
4 wget_calloc [function] [call site] 00200
4 time [call site] 00201
3 __ctype_b_loc [call site] 00202
3 wget_strmemdup [function] [call site] 00203
4 wget_malloc [function] [call site] 00204
3 __ctype_b_loc [call site] 00205
3 atoll [call site] 00206
3 __ctype_b_loc [call site] 00207
3 atoll [call site] 00208
3 wget_tls_session_deinit [function] [call site] 00209
3 __ctype_b_loc [call site] 00210
3 wget_base64_get_decoded_length [function] [call site] 00211
3 wget_malloc [function] [call site] 00212
3 wget_base64_decode [function] [call site] 00213
4 isbase64 [function] [call site] 00214
3 wget_hashmap_size [function] [call site] 00215
3 wget_memdup [function] [call site] 00216
4 wget_malloc [function] [call site] 00217
3 wget_tls_session_db_add [function] [call site] 00218
4 wget_thread_mutex_lock [function] [call site] 00219
5 pthread_mutex_lock [call site] 00220
4 wget_hashmap_remove [function] [call site] 00221
5 hashmap_remove_entry [function] [call site] 00222
4 wget_debug_printf [function] [call site] 00223
4 wget_tls_session_free [function] [call site] 00224
4 wget_hashmap_get [function] [call site] 00225
5 hashmap_find_entry [function] [call site] 00226
4 wget_debug_printf [function] [call site] 00227
4 wget_hashmap_remove [function] [call site] 00228
4 wget_debug_printf [function] [call site] 00229
4 wget_debug_printf [function] [call site] 00230
4 wget_hashmap_put [function] [call site] 00231
5 hashmap_find_entry [function] [call site] 00232
5 hashmap_new_entry [function] [call site] 00233
6 wget_malloc [function] [call site] 00234
6 wget_calloc [function] [call site] 00235
6 hashmap_rehash [function] [call site] 00236
4 wget_thread_mutex_unlock [function] [call site] 00237
5 pthread_mutex_unlock [call site] 00238
3 wget_tls_session_deinit [function] [call site] 00239
3 gettext [call site] 00240
3 wget_error_printf [function] [call site] 00241
3 ferror [call site] 00242
2 gettext [call site] 00243
2 wget_error_printf [function] [call site] 00244
2 wget_debug_printf [function] [call site] 00245
1 wget_tls_session_get [function] [call site] 00246
2 time [call site] 00247
2 wget_hashmap_get [function] [call site] 00248
2 wget_memdup [function] [call site] 00249
1 wget_tls_session_db_free [function] [call site] 00250
2 wget_tls_session_db_deinit [function] [call site] 00251
3 wget_thread_mutex_lock [function] [call site] 00252
3 wget_hashmap_free [function] [call site] 00253
3 wget_thread_mutex_unlock [function] [call site] 00254
3 wget_thread_mutex_destroy [function] [call site] 00255
4 pthread_mutex_destroy [call site] 00256