Fuzz introspector: pubkey_fuzz
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
36 137 sshkey_ssh_name_from_type_nid call site: 00137 sshkey_putb
34 15 sshlog call site: 00015 do_log
13 104 sshkey_impl_from_key call site: 00104 helper_by_key
8 6 sshbuf_fromb call site: 00006 ssh_signal
3 100 sshkey_free call site: 00100 pkcs11_key_free
2 127 recallocarray call site: 00127 __errno_location
2 134 sshbuf_allocate call site: 00134 sshkey_ssh_name_from_type_nid
1 57 sshbuf_set_parent call site: 00057 sshbuf_free
1 77 type_from_name call site: 00077 strcasecmp
1 94 cert_new call site: 00094 cert_free
1 130 recallocarray call site: 00130 memset
1 179 sshkey_free_contents call site: 00179 munmap

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 sshkey_from_blob [function] [call site] 00001
2 sshbuf_from [function] [call site] 00002
3 calloc [call site] 00003
2 sshkey_from_blob_internal [function] [call site] 00004
3 sshbuf_fromb [function] [call site] 00005
4 sshbuf_check_sanity [function] [call site] 00006
5 ssh_signal [function] [call site] 00007
6 memset [call site] 00008
6 sigfillset [call site] 00009
6 sigaction [call site] 00010
6 strsignal [call site] 00011
6 __errno_location [call site] 00012
6 strerror [call site] 00013
6 sshlog [function] [call site] 00014
7 sshlogv [function] [call site] 00015
8 strrchr [call site] 00016
8 getpid [call site] 00017
8 snprintf [call site] 00018
8 match_pattern_list [function] [call site] 00019
9 strlen [call site] 00020
9 __ctype_b_loc [call site] 00021
9 tolower [call site] 00022
9 match_pattern [function] [call site] 00023
10 match_pattern [function] [call site] 00024
11 match_pattern [function] [call site] 00025
8 snprintf [call site] 00026
8 snprintf [call site] 00027
8 strlcpy [function] [call site] 00028
8 do_log [function] [call site] 00029
9 __errno_location [call site] 00030
9 snprintf [call site] 00031
9 vsnprintf [call site] 00032
9 vsnprintf [call site] 00033
9 snprintf [call site] 00034
9 strlcpy [function] [call site] 00035
9 strnvis [function] [call site] 00036
10 __ctype_b_loc [call site] 00037
10 vis [function] [call site] 00038
11 __ctype_b_loc [call site] 00039
11 __ctype_b_loc [call site] 00040
10 vis [function] [call site] 00041
9 snprintf [call site] 00042
9 strlen [call site] 00043
9 write [call site] 00044
9 openlog [call site] 00045
9 syslog [call site] 00046
9 closelog [call site] 00047
9 __errno_location [call site] 00048
5 raise [call site] 00049
4 sshbuf_ptr [function] [call site] 00050
5 sshbuf_check_sanity [function] [call site] 00051
4 sshbuf_len [function] [call site] 00052
5 sshbuf_check_sanity [function] [call site] 00053
4 sshbuf_from [function] [call site] 00054
4 sshbuf_set_parent [function] [call site] 00055
5 sshbuf_check_sanity [function] [call site] 00056
5 sshbuf_check_sanity [function] [call site] 00057
4 sshbuf_free [function] [call site] 00058
5 sshbuf_check_sanity [function] [call site] 00059
5 sshbuf_free [function] [call site] 00060
6 freezero [function] [call site] 00061
7 explicit_bzero [call site] 00062
6 freezero [function] [call site] 00063
3 sshbuf_get_cstring [function] [call site] 00064
4 sshbuf_peek_string_direct [function] [call site] 00065
5 sshbuf_ptr [function] [call site] 00066
5 sshbuf_len [function] [call site] 00067
5 sshbuf_len [function] [call site] 00068
4 memchr [call site] 00069
4 sshbuf_get_string_direct [function] [call site] 00070
5 sshbuf_peek_string_direct [function] [call site] 00071
5 sshbuf_consume [function] [call site] 00072
6 sshbuf_check_sanity [function] [call site] 00073
6 sshbuf_len [function] [call site] 00074
3 sshkey_type_from_name [function] [call site] 00075
4 type_from_name [function] [call site] 00076
5 strcmp [call site] 00077
5 strcasecmp [call site] 00078
3 sshkey_type_is_cert [function] [call site] 00079
4 sshkey_impl_from_type [function] [call site] 00080
3 sshkey_impl_from_type [function] [call site] 00081
3 sshkey_new [function] [call site] 00082
4 sshkey_impl_from_type [function] [call site] 00083
4 calloc [call site] 00084
4 sshkey_is_cert [function] [call site] 00085
5 sshkey_type_is_cert [function] [call site] 00086
4 cert_new [function] [call site] 00087
5 calloc [call site] 00088
5 sshbuf_new_label [function] [call site] 00089
6 calloc [call site] 00090
6 strncpy [call site] 00091
6 calloc [call site] 00092
5 sshbuf_new_label [function] [call site] 00093
5 sshbuf_new_label [function] [call site] 00094
5 cert_free [function] [call site] 00095
6 sshbuf_free [function] [call site] 00096
6 sshbuf_free [function] [call site] 00097
6 sshbuf_free [function] [call site] 00098
6 sshkey_free [function] [call site] 00099
7 sshkey_free_contents [function] [call site] 00100
8 pkcs11_key_free [function] [call site] 00101
9 sshkey_type [function] [call site] 00102
10 sshkey_impl_from_key [function] [call site] 00103
11 sshkey_impl_from_type_nid [function] [call site] 00104
9 sshlog [function] [call site] 00105
9 helper_by_key [function] [call site] 00106
10 sshbuf_new_label [function] [call site] 00107
10 sshfatal [function] [call site] 00108
11 sshlogv [function] [call site] 00109
11 cleanup_exit [function] [call site] 00110
12 _exit [call site] 00111
10 sshkey_putb [function] [call site] 00112
11 to_blob_buf [function] [call site] 00113
12 sshkey_type_plain [function] [call site] 00114
12 sshkey_type_is_cert [function] [call site] 00115
12 sshbuf_len [function] [call site] 00116
12 sshbuf_putb [function] [call site] 00117
13 sshbuf_ptr [function] [call site] 00118
13 sshbuf_len [function] [call site] 00119
13 sshbuf_put [function] [call site] 00120
14 sshbuf_reserve [function] [call site] 00121
15 sshbuf_allocate [function] [call site] 00122
16 sshbuf_check_reserve [function] [call site] 00123
17 sshbuf_check_sanity [function] [call site] 00124
16 sshbuf_maybe_pack [function] [call site] 00125
16 recallocarray [function] [call site] 00126
17 calloc [call site] 00127
17 __errno_location [call site] 00128
17 __errno_location [call site] 00129
17 getpagesize [call site] 00130
17 memset [call site] 00131
17 memset [call site] 00132
17 explicit_bzero [call site] 00133
16 sshbuf_check_reserve [function] [call site] 00134
12 sshkey_impl_from_type [function] [call site] 00135
12 sshkey_ssh_name_from_type_nid [function] [call site] 00136
13 sshkey_impl_from_type_nid [function] [call site] 00137
12 sshbuf_put_cstring [function] [call site] 00138
13 strlen [call site] 00139
13 sshbuf_put_string [function] [call site] 00140
14 sshbuf_reserve [function] [call site] 00141
10 ssh_err [function] [call site] 00142
11 __errno_location [call site] 00143
11 strerror [call site] 00144
10 sshfatal [function] [call site] 00145
10 sshbuf_equals [function] [call site] 00146
11 sshbuf_ptr [function] [call site] 00147
11 sshbuf_len [function] [call site] 00148
11 sshbuf_len [function] [call site] 00149
11 sshbuf_ptr [function] [call site] 00150
11 sshbuf_len [function] [call site] 00151
11 memcmp [call site] 00152
10 sshbuf_free [function] [call site] 00153
10 sshbuf_free [function] [call site] 00154
9 sshkey_type [function] [call site] 00155
9 sshfatal [function] [call site] 00156
9 sshbuf_new_label [function] [call site] 00157
9 sshfatal [function] [call site] 00158
9 sshkey_putb [function] [call site] 00159
9 ssh_err [function] [call site] 00160
9 sshfatal [function] [call site] 00161
9 sshbuf_equals [function] [call site] 00162
9 sshfatal [function] [call site] 00163
9 xrecallocarray [function] [call site] 00164
10 recallocarray [function] [call site] 00165
10 sshfatal [function] [call site] 00166
9 helper_terminate [function] [call site] 00167
10 sshfatal [function] [call site] 00168
10 sshlog [function] [call site] 00169
10 close [call site] 00170
10 sshfatal [function] [call site] 00171
10 xrecallocarray [function] [call site] 00172
10 sshbuf_free [function] [call site] 00173
8 sshkey_impl_from_type [function] [call site] 00174
8 sshkey_is_cert [function] [call site] 00175
8 cert_free [function] [call site] 00176
9 freezero [function] [call site] 00177
8 freezero [function] [call site] 00178
8 sshkey_prekey_free [function] [call site] 00179
9 munmap [call site] 00180
7 freezero [function] [call site] 00181
4 sshkey_free [function] [call site] 00182
3 sshkey_type_is_cert [function] [call site] 00183
3 sshbuf_get_string_direct [function] [call site] 00184
3 sshkey_is_cert [function] [call site] 00185
3 cert_parse [function] [call site] 00186
4 sshbuf_putb [function] [call site] 00187
4 sshbuf_get_u64 [function] [call site] 00188
5 sshbuf_ptr [function] [call site] 00189
5 sshbuf_consume [function] [call site] 00190
4 sshbuf_get_u32 [function] [call site] 00191
5 sshbuf_ptr [function] [call site] 00192
5 sshbuf_consume [function] [call site] 00193
4 sshbuf_get_cstring [function] [call site] 00194
4 sshbuf_froms [function] [call site] 00195
5 sshbuf_peek_string_direct [function] [call site] 00196
5 sshbuf_from [function] [call site] 00197
5 sshbuf_consume [function] [call site] 00198
5 sshbuf_set_parent [function] [call site] 00199
5 sshbuf_free [function] [call site] 00200
4 sshbuf_get_u64 [function] [call site] 00201
4 sshbuf_get_u64 [function] [call site] 00202
4 sshbuf_froms [function] [call site] 00203
4 sshbuf_froms [function] [call site] 00204
4 sshbuf_get_string_direct [function] [call site] 00205
4 sshbuf_froms [function] [call site] 00206
4 sshbuf_len [function] [call site] 00207
4 sshbuf_get_string [function] [call site] 00208
5 sshbuf_get_string_direct [function] [call site] 00209
4 sshbuf_len [function] [call site] 00210
4 sshbuf_get_cstring [function] [call site] 00211
4 recallocarray [function] [call site] 00212
4 sshbuf_putb [function] [call site] 00213
4 sshbuf_putb [function] [call site] 00214
4 sshbuf_len [function] [call site] 00215
4 sshbuf_get_string_direct [function] [call site] 00216
4 sshbuf_get_string_direct [function] [call site] 00217
4 sshbuf_reset [function] [call site] 00218
5 sshbuf_check_sanity [function] [call site] 00219
5 recallocarray [function] [call site] 00220
5 explicit_bzero [call site] 00221
4 sshbuf_len [function] [call site] 00222
4 sshbuf_get_string_direct [function] [call site] 00223
4 sshbuf_get_string_direct [function] [call site] 00224
4 sshbuf_reset [function] [call site] 00225
4 sshkey_from_blob_internal [function] [call site] 00226
5 sshbuf_len [function] [call site] 00227
5 sshbuf_free [function] [call site] 00228
5 sshkey_free [function] [call site] 00229
4 sshkey_type_is_valid_ca [function] [call site] 00230
5 sshkey_impl_from_type [function] [call site] 00231
4 sshbuf_ptr [function] [call site] 00232
4 sshkey_verify [function] [call site] 00233
5 sshkey_impl_from_key [function] [call site] 00234
4 sshkey_get_sigtype [function] [call site] 00235
5 sshbuf_from [function] [call site] 00236
5 sshbuf_get_cstring [function] [call site] 00237
5 sshbuf_free [function] [call site] 00238
4 sshbuf_free [function] [call site] 00239
4 sshbuf_free [function] [call site] 00240
4 sshbuf_free [function] [call site] 00241
4 sshbuf_free [function] [call site] 00242
2 sshbuf_free [function] [call site] 00243
1 sshkey_free [function] [call site] 00244