Fuzz introspector: ssh_sftp_attr_fuzzer_nalloc
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
349 0 EP call site: 00000 ssh_new

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 nalloc_start [function] [call site] 00001
2 nalloc_random_update [function] [call site] 00002
1 __assert_fail [call site] 00003
1 ssh_new [function] [call site] 00004
2 calloc [function] [call site] 00005
3 nalloc_fail [function] [call site] 00006
4 nalloc_random_update [function] [call site] 00007
4 nalloc_random_update [function] [call site] 00008
4 nalloc_random_update [function] [call site] 00009
4 nalloc_backtrace_exclude [function] [call site] 00010
5 fprintf [call site] 00011
3 __errno_location [call site] 00012
3 __libc_calloc [call site] 00013
2 ssh_socket_new [function] [call site] 00016
3 _ssh_set_error_oom [function] [call site] 00018
4 snprintf [call site] 00019
3 ssh_buffer_new [function] [call site] 00020
4 ssh_buffer_allocate_size [function] [call site] 00022
5 buffer_shift [function] [call site] 00023
6 explicit_bzero [call site] 00024
5 realloc_buffer [function] [call site] 00025
6 explicit_bzero [call site] 00026
6 realloc [function] [call site] 00027
7 nalloc_fail [function] [call site] 00028
7 __errno_location [call site] 00029
7 __libc_realloc [call site] 00030
3 _ssh_set_error_oom [function] [call site] 00031
3 ssh_buffer_new [function] [call site] 00032
3 _ssh_set_error_oom [function] [call site] 00033
3 ssh_buffer_free [function] [call site] 00034
4 explicit_bzero [call site] 00035
4 explicit_bzero [call site] 00036
2 ssh_buffer_new [function] [call site] 00037
2 ssh_buffer_new [function] [call site] 00038
2 ssh_list_new [function] [call site] 00039
2 ssh_set_blocking [function] [call site] 00040
2 ssh_agent_new [function] [call site] 00041
3 ssh_socket_new [function] [call site] 00043
2 ssh_pki_ctx_new [function] [call site] 00044
2 ssh_list_new [function] [call site] 00046
2 strdup [call site] 00047
2 ssh_list_append [function] [call site] 00048
3 ssh_iterator_new [function] [call site] 00049
2 strdup [call site] 00050
2 ssh_list_append [function] [call site] 00051
2 strdup [call site] 00052
2 ssh_list_append [function] [call site] 00053
2 ssh_free [function] [call site] 00054
3 ssh_list_get_iterator [function] [call site] 00055
3 ssh_channel_do_free [function] [call site] 00056
4 ssh_list_find [function] [call site] 00057
5 ssh_list_get_iterator [function] [call site] 00058
4 ssh_list_remove [function] [call site] 00059
4 ssh_buffer_free [function] [call site] 00060
4 ssh_buffer_free [function] [call site] 00061
4 ssh_list_free [function] [call site] 00062
3 ssh_list_remove [function] [call site] 00063
3 ssh_list_get_iterator [function] [call site] 00064
3 ssh_list_free [function] [call site] 00065
3 ssh_pcap_context_free [function] [call site] 00066
3 ssh_socket_free [function] [call site] 00067
4 ssh_socket_close [function] [call site] 00068
5 ssh_socket_is_open [function] [call site] 00069
5 close [call site] 00070
5 __errno_location [call site] 00071
5 ssh_poll_is_locked [function] [call site] 00072
5 ssh_poll_free [function] [call site] 00073
6 ssh_poll_ctx_remove [function] [call site] 00074
7 ssh_poll_ctx_resize [function] [call site] 00075
5 kill [call site] 00079
5 waitpid [call site] 00080
5 __errno_location [call site] 00081
5 __errno_location [call site] 00082
5 ssh_strerror [function] [call site] 00083
6 __xpg_strerror_r [call site] 00084
5 _ssh_log [function] [call site] 00085
6 ssh_get_log_level [function] [call site] 00086
6 ssh_vlog [function] [call site] 00087
7 vsnprintf [call site] 00088
7 ssh_log_function [function] [call site] 00089
8 ssh_get_log_callback [function] [call site] 00090
8 ssh_log_custom [function] [call site] 00091
9 snprintf [call site] 00092
9 ssh_get_log_userdata [function] [call site] 00093
8 ssh_log_stderr [function] [call site] 00094
9 current_timestring [function] [call site] 00095
10 gettimeofday [call site] 00096
10 localtime_r [call site] 00097
10 strftime [call site] 00098
10 snprintf [call site] 00099
10 strftime [call site] 00100
10 snprintf [call site] 00101
9 fprintf [call site] 00102
9 fprintf [call site] 00103
9 fprintf [call site] 00104
4 ssh_buffer_free [function] [call site] 00107
4 ssh_buffer_free [function] [call site] 00108
3 ssh_poll_ctx_free [function] [call site] 00109
4 ssh_poll_free [function] [call site] 00110
3 ssh_buffer_free [function] [call site] 00111
3 ssh_buffer_free [function] [call site] 00112
3 ssh_buffer_free [function] [call site] 00113
3 ssh_buffer_free [function] [call site] 00114
3 crypto_free [function] [call site] 00115
4 ssh_key_free [function] [call site] 00116
5 ssh_key_clean [function] [call site] 00117
6 pki_key_clean [function] [call site] 00118
7 EVP_PKEY_free [call site] 00119
6 ssh_buffer_free [function] [call site] 00120
6 ssh_string_burn [function] [call site] 00121
7 ssh_string_len [function] [call site] 00122
8 ntohl [call site] 00123
7 explicit_bzero [call site] 00124
6 ssh_string_free [function] [call site] 00125
6 ssh_string_burn [function] [call site] 00126
6 ssh_string_free [function] [call site] 00127
6 ssh_string_burn [function] [call site] 00128
6 ssh_string_free [function] [call site] 00129
6 ssh_string_burn [function] [call site] 00130
6 ssh_string_free [function] [call site] 00131
4 ssh_dh_cleanup [function] [call site] 00132
5 DH_free [call site] 00133
5 DH_free [call site] 00134
4 BN_clear_free [call site] 00135
4 EC_KEY_free [call site] 00136
4 EVP_PKEY_free [call site] 00137
4 explicit_bzero [call site] 00138
4 explicit_bzero [call site] 00139
4 compress_cleanup [function] [call site] 00140
5 deflateEnd [call site] 00141
5 inflateEnd [call site] 00142
4 explicit_bzero [call site] 00143
4 explicit_bzero [call site] 00144
4 cipher_free [function] [call site] 00145
5 ssh_cipher_clear [function] [call site] 00146
4 cipher_free [function] [call site] 00147
4 explicit_bzero [call site] 00148
4 ssh_string_burn [function] [call site] 00149
4 ssh_string_free [function] [call site] 00150
4 ssh_string_free [function] [call site] 00151
4 ssh_string_free [function] [call site] 00152
4 explicit_bzero [call site] 00153
3 crypto_free [function] [call site] 00154
3 ssh_agent_free [function] [call site] 00155
4 ssh_buffer_free [function] [call site] 00156
4 ssh_agent_close [function] [call site] 00157
5 ssh_socket_close [function] [call site] 00158
4 ssh_socket_free [function] [call site] 00159
3 ssh_pki_ctx_free [function] [call site] 00160
3 ssh_key_free [function] [call site] 00161
3 ssh_key_free [function] [call site] 00162
3 ssh_key_free [function] [call site] 00163
3 _ssh_list_pop_head [function] [call site] 00164
3 ssh_message_free [function] [call site] 00165
4 strlen [call site] 00166
4 explicit_bzero [call site] 00167
4 ssh_key_free [function] [call site] 00168
4 ssh_key_free [function] [call site] 00169
3 _ssh_list_pop_head [function] [call site] 00170
3 ssh_list_free [function] [call site] 00171
3 ssh_kbdint_free [function] [call site] 00172
4 strlen [call site] 00173
4 explicit_bzero [call site] 00174
4 strlen [call site] 00175
4 explicit_bzero [call site] 00176
3 ssh_list_free [function] [call site] 00177
3 _ssh_list_pop_head [function] [call site] 00178
3 _ssh_list_pop_head [function] [call site] 00179
3 ssh_list_free [function] [call site] 00180
3 _ssh_list_pop_head [function] [call site] 00181
3 _ssh_list_pop_head [function] [call site] 00182
3 ssh_list_free [function] [call site] 00183
3 _ssh_list_pop_head [function] [call site] 00184
3 _ssh_list_pop_head [function] [call site] 00185
3 ssh_list_free [function] [call site] 00186
3 _ssh_list_pop_head [function] [call site] 00187
3 _ssh_list_pop_head [function] [call site] 00188
3 ssh_list_free [function] [call site] 00189
3 ssh_proxyjumps_free [function] [call site] 00190
4 _ssh_list_pop_head [function] [call site] 00191
4 _ssh_list_pop_head [function] [call site] 00192
3 ssh_list_free [function] [call site] 00193
3 ssh_list_free [function] [call site] 00194
3 _ssh_list_pop_head [function] [call site] 00195
3 _ssh_list_pop_head [function] [call site] 00196
3 ssh_list_free [function] [call site] 00197
3 _ssh_list_pop_head [function] [call site] 00198
3 ssh_buffer_free [function] [call site] 00199
3 ssh_list_free [function] [call site] 00200
3 ssh_agent_state_free [function] [call site] 00201
4 ssh_string_free_char [function] [call site] 00202
4 ssh_key_free [function] [call site] 00203
3 _ssh_list_pop_head [function] [call site] 00204
3 _ssh_list_pop_head [function] [call site] 00205
3 ssh_list_free [function] [call site] 00206
3 _ssh_list_pop_head [function] [call site] 00207
3 _ssh_list_pop_head [function] [call site] 00208
3 ssh_list_free [function] [call site] 00209
3 _ssh_remove_legacy_log_cb [function] [call site] 00210
4 ssh_get_log_callback [function] [call site] 00211
4 _ssh_reset_log_cb [function] [call site] 00212
4 ssh_set_log_userdata [function] [call site] 00213
3 explicit_bzero [call site] 00214
1 create_minimal_sftp_session [function] [call site] 00215
1 ssh_buffer_new [function] [call site] 00217
1 ssh_buffer_reinit [function] [call site] 00218
2 explicit_bzero [call site] 00219
2 realloc_buffer [function] [call site] 00220
1 ssh_buffer_add_data [function] [call site] 00221
2 buffer_shift [function] [call site] 00222
2 realloc_buffer [function] [call site] 00223
1 sftp_parse_attr [function] [call site] 00224
2 sftp_parse_attr_4 [function] [call site] 00225
3 _ssh_set_error_oom [function] [call site] 00227
3 sftp_set_error [function] [call site] 00228
3 ssh_buffer_get_u32 [function] [call site] 00229
4 ssh_buffer_get_data [function] [call site] 00230
5 ssh_buffer_validate_length [function] [call site] 00231
3 ntohl [call site] 00232
3 ssh_buffer_get_u64 [function] [call site] 00233
4 ssh_buffer_get_data [function] [call site] 00234
3 ntohl [call site] 00235
3 ssh_buffer_get_ssh_string [function] [call site] 00236
4 ssh_buffer_get_u32 [function] [call site] 00237
4 ntohl [call site] 00238
4 ssh_buffer_validate_length [function] [call site] 00239
4 ssh_string_new [function] [call site] 00240
5 __errno_location [call site] 00241
5 htonl [call site] 00243
4 ssh_string_data [function] [call site] 00244
4 ssh_buffer_get_data [function] [call site] 00245
3 ssh_string_to_char [function] [call site] 00246
4 ssh_string_len [function] [call site] 00247
3 ssh_string_free [function] [call site] 00248
3 ssh_buffer_get_ssh_string [function] [call site] 00249
3 ssh_string_to_char [function] [call site] 00250
3 ssh_string_free [function] [call site] 00251
3 ssh_buffer_get_u32 [function] [call site] 00252
3 ntohl [call site] 00253
3 ssh_buffer_get_u64 [function] [call site] 00254
3 ntohl [call site] 00255
3 ssh_buffer_get_u32 [function] [call site] 00256
3 ntohl [call site] 00257
3 ssh_buffer_get_u64 [function] [call site] 00258
3 ntohl [call site] 00259
3 ssh_buffer_get_u32 [function] [call site] 00260
3 ntohl [call site] 00261
3 ssh_buffer_get_u64 [function] [call site] 00262
3 ntohl [call site] 00263
3 ssh_buffer_get_u32 [function] [call site] 00264
3 ntohl [call site] 00265
3 ssh_buffer_get_ssh_string [function] [call site] 00266
3 ssh_buffer_get_u32 [function] [call site] 00267
3 ntohl [call site] 00268
3 ssh_buffer_get_ssh_string [function] [call site] 00269
3 ssh_buffer_get_ssh_string [function] [call site] 00270
3 ssh_string_free [function] [call site] 00271
3 ssh_string_free [function] [call site] 00272
3 ssh_string_free [function] [call site] 00273
3 ssh_string_free [function] [call site] 00274
3 ssh_string_free [function] [call site] 00275
3 _ssh_set_error [function] [call site] 00276
4 vsnprintf [call site] 00277
4 ssh_get_log_level [function] [call site] 00278
4 ssh_log_function [function] [call site] 00279
2 sftp_parse_attr_3 [function] [call site] 00280
3 _ssh_set_error_oom [function] [call site] 00282
3 sftp_set_error [function] [call site] 00283
3 _ssh_buffer_unpack [function] [call site] 00284
4 ssh_buffer_unpack_va [function] [call site] 00285
5 ssh_buffer_get_len [function] [call site] 00286
5 ssh_buffer_get_u8 [function] [call site] 00287
6 ssh_buffer_get_data [function] [call site] 00288
5 ssh_buffer_get_data [function] [call site] 00289
5 ntohs [call site] 00290
5 ssh_buffer_get_u32 [function] [call site] 00291
5 ntohl [call site] 00292
5 ssh_buffer_get_u64 [function] [call site] 00293
5 ntohl [call site] 00294
5 ssh_buffer_get_ssh_string [function] [call site] 00295
5 ssh_make_string_bn [function] [call site] 00296
6 ssh_string_len [function] [call site] 00297
6 BN_new [call site] 00298
6 BN_bin2bn [call site] 00299
5 ssh_string_burn [function] [call site] 00300
5 ssh_string_free [function] [call site] 00301
5 ssh_buffer_get_ssh_string [function] [call site] 00302
5 ssh_buffer_get_u32 [function] [call site] 00303
5 ntohl [call site] 00304
5 ssh_buffer_validate_length [function] [call site] 00305
5 ssh_buffer_get_data [function] [call site] 00306
5 ssh_buffer_validate_length [function] [call site] 00307
5 ssh_buffer_get_data [function] [call site] 00308
5 abort [call site] 00310
5 explicit_bzero [call site] 00311
5 explicit_bzero [call site] 00312
5 explicit_bzero [call site] 00313
5 explicit_bzero [call site] 00314
5 BN_clear_free [call site] 00315
5 ssh_string_burn [function] [call site] 00316
5 strlen [call site] 00317
5 explicit_bzero [call site] 00318
5 explicit_bzero [call site] 00319
3 ssh_get_openssh_version [function] [call site] 00321
3 sftp_parse_longname [function] [call site] 00322
4 __ctype_b_loc [call site] 00323
4 __ctype_b_loc [call site] 00324
4 __ctype_b_loc [call site] 00325
4 strndup [call site] 00326
3 sftp_parse_longname [function] [call site] 00327
3 _ssh_buffer_unpack [function] [call site] 00328
3 _ssh_buffer_unpack [function] [call site] 00330
3 _ssh_buffer_unpack [function] [call site] 00332
3 _ssh_buffer_unpack [function] [call site] 00333
3 _ssh_buffer_unpack [function] [call site] 00334
3 _ssh_buffer_unpack [function] [call site] 00335
3 _ssh_buffer_unpack [function] [call site] 00336
3 _ssh_buffer_unpack [function] [call site] 00337
3 ssh_string_free [function] [call site] 00338
3 ssh_string_free [function] [call site] 00339
3 _ssh_set_error [function] [call site] 00340
3 sftp_set_error [function] [call site] 00341
2 _ssh_set_error [function] [call site] 00342
1 sftp_attributes_free [function] [call site] 00343
2 ssh_string_free [function] [call site] 00344
2 ssh_string_free [function] [call site] 00345
2 ssh_string_free [function] [call site] 00346
1 ssh_buffer_free [function] [call site] 00347
1 nalloc_end [function] [call site] 00349