Fuzz introspector: fuzz_packet
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
725 2055 19 :

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

725 2055 register_x86_padlock_crypto call site: 00000 /src/gnutls/lib/accelerated/x86/x86-common.c:383
472 472 12 :

['_gnutls_buffer_clear', '_name_val_array_clear', 'fseek', 'ini_ctx_deinit', 'construct_system_wide_priority_string', 'gnutls_strerror', 'fclose', 'pthread_rwlock_wrlock', 'cfg_apply', 'update_system_wide_priority_string', 'fopen', 'ini_parse_file']

604 604 _gnutls_update_system_priorities call site: 00000 /src/gnutls/lib/priority.c:2214
48 48 1 :

['capabilities_to_intel_cpuid']

440 1304 register_x86_intel_crypto call site: 00000 /src/gnutls/lib/accelerated/x86/x86-common.c:817
18 18 1 :

['_gnutls_asn2err']

40 40 _gnutls_global_init call site: 00000 /src/gnutls/lib/global.c:305
16 16 1 :

['_asn1_delete_list_and_nodes']

16 16 asn1_array2tree call site: 00000 /src/gnutls/lib/minitasn1/structure.c:272
12 12 2 :

['_gnutls_log', 'atoi']

22 1557 lib_init call site: 00000 /src/gnutls/lib/global.c:516
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
9 9 1 :

['pkt_wire_alloc']

9 9 pkt_init call site: 00008 /src/knot-dns/src/libknot/packet/pkt.c:194
6 6 3 :

['gnutls_global_set_log_function', 'atoi', 'gnutls_global_set_log_level']

166 1987 _gnutls_global_init call site: 00000 /src/gnutls/lib/global.c:261
6 6 1 :

['memcmp']

6 6 check_x86_cpu_vendor call site: 00000 /src/gnutls/lib/accelerated/x86/x86-common.c:792

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 knot_pkt_new [function] [call site] 00001
2 mm_ctx_init [function] [call site] 00002
3 mm_malloc [function] [call site] 00003
2 pkt_new_mm [function] [call site] 00004
3 __assert_fail [call site] 00005
3 mm_alloc [function] [call site] 00006
3 pkt_init [function] [call site] 00007
4 __assert_fail [call site] 00008
4 pkt_wire_alloc [function] [call site] 00009
5 __assert_fail [call site] 00010
5 mm_alloc [function] [call site] 00011
4 pkt_wire_set [function] [call site] 00012
5 __assert_fail [call site] 00013
3 mm_free [function] [call site] 00014
1 knot_pkt_parse [function] [call site] 00015
2 sections_reset [function] [call site] 00016
3 knot_pkt_begin [function] [call site] 00017
2 knot_pkt_parse_question [function] [call site] 00018
3 knot_wire_get_qdcount [function] [call site] 00019
4 __assert_fail [call site] 00020
4 knot_wire_read_u16 [function] [call site] 00021
5 __assert_fail [call site] 00022
5 __bswap_16 [function] [call site] 00023
3 knot_dname_wire_check [function] [call site] 00024
4 knot_wire_is_pointer [function] [call site] 00025
4 knot_wire_get_pointer [function] [call site] 00026
5 knot_wire_is_pointer [function] [call site] 00027
5 __assert_fail [call site] 00028
5 knot_wire_read_u16 [function] [call site] 00029
3 knot_dname_copy_lower [function] [call site] 00030
4 knot_tolower [function] [call site] 00031
2 parse_payload [function] [call site] 00032
3 __assert_fail [call site] 00033
3 __assert_fail [call site] 00034
3 __assert_fail [call site] 00035
3 knot_wire_get_ancount [function] [call site] 00036
4 __assert_fail [call site] 00037
4 knot_wire_read_u16 [function] [call site] 00038
3 knot_wire_get_nscount [function] [call site] 00039
4 __assert_fail [call site] 00040
4 knot_wire_read_u16 [function] [call site] 00041
3 knot_wire_get_arcount [function] [call site] 00042
4 __assert_fail [call site] 00043
4 knot_wire_read_u16 [function] [call site] 00044
3 pkt_rr_array_alloc [function] [call site] 00045
4 mm_alloc [function] [call site] 00046
4 mm_alloc [function] [call site] 00047
4 mm_free [function] [call site] 00048
4 mm_free [function] [call site] 00049
4 mm_free [function] [call site] 00050
3 knot_pkt_begin [function] [call site] 00051
3 parse_section [function] [call site] 00052
4 __assert_fail [call site] 00053
4 pkt_rr_wirecount [function] [call site] 00054
5 __assert_fail [call site] 00055
5 knot_wire_get_ancount [function] [call site] 00056
5 knot_wire_get_nscount [function] [call site] 00057
5 knot_wire_get_arcount [function] [call site] 00058
5 __assert_fail [call site] 00059
4 parse_rr [function] [call site] 00060
5 __assert_fail [call site] 00061
5 pkt_rr_array_alloc [function] [call site] 00062
5 knot_rrset_rr_from_wire [function] [call site] 00063
6 parse_header [function] [call site] 00064
7 __assert_fail [call site] 00065
7 __assert_fail [call site] 00066
7 __assert_fail [call site] 00067
7 __assert_fail [call site] 00068
7 wire_ctx_init_const [function] [call site] 00069
8 __assert_fail [call site] 00070
8 wire_ctx_init [function] [call site] 00071
9 __assert_fail [call site] 00072
7 wire_ctx_set_offset [function] [call site] 00073
8 __assert_fail [call site] 00074
7 knot_dname_wire_check [function] [call site] 00075
7 knot_dname_unpack [function] [call site] 00076
8 knot_wire_seek_label [function] [call site] 00077
9 __assert_fail [call site] 00078
9 knot_wire_is_pointer [function] [call site] 00079
9 knot_wire_get_pointer [function] [call site] 00080
9 __assert_fail [call site] 00081
8 knot_wire_next_label [function] [call site] 00082
9 __assert_fail [call site] 00083
9 __assert_fail [call site] 00084
9 knot_wire_seek_label [function] [call site] 00085
7 mm_alloc [function] [call site] 00086
7 wire_ctx_skip [function] [call site] 00087
8 __assert_fail [call site] 00088
8 wire_ctx_available [function] [call site] 00089
9 __assert_fail [call site] 00090
9 wire_ctx_offset [function] [call site] 00091
10 __assert_fail [call site] 00092
8 wire_ctx_offset [function] [call site] 00093
7 wire_ctx_read_u16 [function] [call site] 00094
8 wire_ctx_read [function] [call site] 00095
9 __assert_fail [call site] 00096
9 __assert_fail [call site] 00097
9 memzero [function] [call site] 00098
10 explicit_bzero [call site] 00099
9 wire_ctx_can_read [function] [call site] 00100
10 __assert_fail [call site] 00101
10 wire_ctx_available [function] [call site] 00102
9 memzero [function] [call site] 00103
8 __bswap_16 [function] [call site] 00104
7 wire_ctx_read_u16 [function] [call site] 00105
7 wire_ctx_read_u32 [function] [call site] 00106
8 wire_ctx_read [function] [call site] 00107
8 __bswap_32 [function] [call site] 00108
7 wire_ctx_read_u16 [function] [call site] 00109
7 knot_dname_free [function] [call site] 00110
8 mm_free [function] [call site] 00111
7 wire_ctx_available [function] [call site] 00112
7 knot_dname_free [function] [call site] 00113
7 wire_ctx_offset [function] [call site] 00114
7 knot_rrset_init [function] [call site] 00115
8 knot_rdataset_init [function] [call site] 00116
6 parse_rdata [function] [call site] 00117
7 __assert_fail [call site] 00118
7 __assert_fail [call site] 00119
7 __assert_fail [call site] 00120
7 knot_get_rdata_descriptor [function] [call site] 00121
7 knot_get_obsolete_rdata_descriptor [function] [call site] 00122
7 allow_zero_rdata [function] [call site] 00123
7 knot_rrset_add_rdata [function] [call site] 00124
8 knot_rdata_size [function] [call site] 00125
8 knot_rdata_init [function] [call site] 00126
9 __assert_fail [call site] 00127
9 __assert_fail [call site] 00128
8 knot_rdataset_add [function] [call site] 00129
9 rr_seek [function] [call site] 00130
10 __assert_fail [call site] 00131
10 __assert_fail [call site] 00132
10 __assert_fail [call site] 00133
10 knot_rdata_size [function] [call site] 00134
9 knot_rdata_cmp [function] [call site] 00135
10 __assert_fail [call site] 00136
10 __assert_fail [call site] 00137
10 memcmp [call site] 00138
9 knot_rdataset_next [function] [call site] 00139
10 __assert_fail [call site] 00140
10 knot_rdata_size [function] [call site] 00141
9 add_rr_at [function] [call site] 00142
10 __assert_fail [call site] 00143
10 __assert_fail [call site] 00144
10 __assert_fail [call site] 00145
10 knot_rdata_size [function] [call site] 00146
10 knot_rdata_size [function] [call site] 00147
10 mm_realloc [function] [call site] 00148
11 mm_free [function] [call site] 00149
11 realloc [call site] 00150
10 knot_rdata_init [function] [call site] 00151
9 knot_rdata_cmp [function] [call site] 00152
9 add_rr_at [function] [call site] 00153
9 knot_rdataset_next [function] [call site] 00154
9 __assert_fail [call site] 00155
9 add_rr_at [function] [call site] 00156
7 knot_rdata_size [function] [call site] 00157
7 rdata_traverse_parse [function] [call site] 00158
8 decompress_rdata_dname [function] [call site] 00159
9 __assert_fail [call site] 00160
9 __assert_fail [call site] 00161
9 __assert_fail [call site] 00162
9 __assert_fail [call site] 00163
9 knot_dname_wire_check [function] [call site] 00164
9 knot_dname_unpack [function] [call site] 00165
8 write_rdata_naptr_header [function] [call site] 00166
9 __assert_fail [call site] 00167
9 __assert_fail [call site] 00168
9 __assert_fail [call site] 00169
9 knot_naptr_header_size [function] [call site] 00170
10 wire_ctx_init_const [function] [call site] 00171
10 wire_ctx_skip [function] [call site] 00172
10 wire_ctx_read_u8 [function] [call site] 00173
11 wire_ctx_read [function] [call site] 00174
10 wire_ctx_skip [function] [call site] 00175
10 wire_ctx_offset [function] [call site] 00176
9 write_rdata_fixed [function] [call site] 00177
10 __assert_fail [call site] 00178
10 __assert_fail [call site] 00179
10 __assert_fail [call site] 00180
8 write_rdata_fixed [function] [call site] 00181
8 __assert_fail [call site] 00182
8 write_rdata_fixed [function] [call site] 00183
7 knot_rdataset_add [function] [call site] 00184
6 knot_rrset_clear [function] [call site] 00185
7 knot_rdataset_clear [function] [call site] 00186
8 mm_free [function] [call site] 00187
8 knot_rdataset_init [function] [call site] 00188
7 knot_dname_free [function] [call site] 00189
6 knot_rrset_rr_to_canonical [function] [call site] 00190
7 knot_dname_to_lower [function] [call site] 00191
8 knot_tolower [function] [call site] 00192
7 knot_rrtype_should_be_lowercased [function] [call site] 00193
7 knot_get_rdata_descriptor [function] [call site] 00194
7 knot_get_obsolete_rdata_descriptor [function] [call site] 00195
7 knot_dname_to_lower [function] [call site] 00196
7 knot_dname_size [function] [call site] 00197
8 knot_wire_is_pointer [function] [call site] 00198
8 knot_wire_is_pointer [function] [call site] 00199
7 knot_naptr_header_size [function] [call site] 00200
7 __assert_fail [call site] 00201
6 knot_rrset_clear [function] [call site] 00202
5 check_rr_constraints [function] [call site] 00203
6 knot_tsig_rdata_is_ok [function] [call site] 00204
7 knot_rdataset_at [function] [call site] 00205
8 rr_seek [function] [call site] 00206
7 rdata_seek [function] [call site] 00207
8 knot_rdataset_at [function] [call site] 00208
8 wire_ctx_init_const [function] [call site] 00209
8 knot_dname_size [function] [call site] 00210
8 wire_ctx_skip [function] [call site] 00211
8 wire_ctx_skip [function] [call site] 00212
8 wire_ctx_skip [function] [call site] 00213
8 wire_ctx_skip [function] [call site] 00214
8 wire_ctx_skip [function] [call site] 00215
8 wire_ctx_read_u16 [function] [call site] 00216
8 wire_ctx_skip [function] [call site] 00217
8 wire_ctx_read_u16 [function] [call site] 00218
8 wire_ctx_skip [function] [call site] 00219
8 wire_ctx_skip [function] [call site] 00220
8 wire_ctx_read_u16 [function] [call site] 00221
8 wire_ctx_skip [function] [call site] 00222
8 wire_ctx_skip [function] [call site] 00223
8 wire_ctx_read_u16 [function] [call site] 00224
8 wire_ctx_skip [function] [call site] 00225
8 __assert_fail [call site] 00226
8 wire_ctx_read_u16 [function] [call site] 00227
8 wire_ctx_available [function] [call site] 00228
8 wire_ctx_available [function] [call site] 00229
7 knot_tsig_rdata_alg_name [function] [call site] 00230
8 knot_rdataset_at [function] [call site] 00231
6 knot_wire_get_arcount [function] [call site] 00232
6 knot_edns_get_options [function] [call site] 00233
7 mm_calloc [function] [call site] 00234
8 mm_alloc [function] [call site] 00235
8 memzero [function] [call site] 00236
8 calloc [call site] 00237
7 wire_ctx_init_const [function] [call site] 00238
7 wire_ctx_available [function] [call site] 00239
7 wire_ctx_read_u16 [function] [call site] 00240
7 wire_ctx_read_u16 [function] [call site] 00241
7 wire_ctx_skip [function] [call site] 00242
7 mm_free [function] [call site] 00243
3 knot_pkt_section [function] [call site] 00244
4 __assert_fail [call site] 00245
3 knot_pkt_rr [function] [call site] 00246
4 __assert_fail [call site] 00247
1 knot_pkt_free [function] [call site] 00248
2 pkt_free_data [function] [call site] 00249
3 knot_rrset_clear [function] [call site] 00250
2 mm_free [function] [call site] 00251
2 mm_free [function] [call site] 00252
2 mm_free [function] [call site] 00253
2 mm_free [function] [call site] 00254