Fuzz introspector: isc_lex_gettoken_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
347 347 2 :

['isc__tlserr2result', 'isc_error_fatal']

347 347 isc__crypto_initialize call site: 00000 /src/bind9/build/../lib/isc/crypto.c:291
343 343 1 :

['isc__tlserr2result']

347 354 opensslrsa_build_pkey call site: 00000 /src/bind9/build/../lib/dns/opensslrsa_link.c:528
343 343 1 :

['isc__tlserr2result']

343 343 raw_key_to_ossl call site: 00000 /src/bind9/build/../lib/dns/openssleddsa_link.c:99
63 359 12 :

['isc___errno2result', 'pushback', 'isc_assertion_failed', '__ctype_b_loc', 'isc_parse_uint32', 'ferror', '__errno_location', 'pushandgrow', 'getc_unlocked', 'grow_data', 'isc_buffer_getuint8.18028', 'isc_error_fatal']

65 361 isc_lex_gettoken call site: 00095 /src/bind9/build/../lib/isc/lex.c:516
54 73 3 :

['isc_assertion_failed', 'isc__mem_get', 'isc__mem_reget']

54 73 isc_buffer_reserve call site: 00061 /src/bind9/build/../lib/isc/include/isc/buffer.h:1116
4 4 1 :

['sysconf_ncpus']

4 4 ncpus_initialize call site: 00000 /src/bind9/build/../lib/isc/os.c:163
2 2 1 :

['RSA_set0_factors']

1384 1391 opensslrsa_build_pkey call site: 00000 /src/bind9/build/../lib/dns/opensslrsa_link.c:499
2 2 1 :

['RSA_set0_crt_params']

1039 1046 opensslrsa_build_pkey call site: 00000 /src/bind9/build/../lib/dns/opensslrsa_link.c:509
2 2 1 :

['EVP_PKEY_new_raw_private_key']

345 345 raw_key_to_ossl call site: 00000 /src/bind9/build/../lib/dns/openssleddsa_link.c:94
2 2 1 :

['flockfile']

67 363 isc_lex_gettoken call site: 00042 /src/bind9/build/../lib/isc/lex.c:407
2 2 1 :

['ERR_clear_error']

4 4 isc_hmac_init call site: 00000 /src/bind9/build/../lib/isc/hmac.c:63
2 2 1 :

['funlockfile']

2 2 isc_lex_gettoken call site: 00126 /src/bind9/build/../lib/isc/lex.c:900

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 isc_buffer_init [function] [call site] 00001
2 isc_assertion_failed [function] [call site] 00002
3 abort [call site] 00003
1 isc_buffer_add [function] [call site] 00004
2 isc_assertion_failed [function] [call site] 00005
2 isc_assertion_failed [function] [call site] 00006
1 isc_buffer_setactive [function] [call site] 00007
2 isc_assertion_failed [function] [call site] 00008
2 isc_assertion_failed [function] [call site] 00009
1 isc_lex_openbuffer [function] [call site] 00010
2 isc_assertion_failed [function] [call site] 00011
2 snprintf [call site] 00012
2 new_source [function] [call site] 00013
3 isc__mem_get [function] [call site] 00014
4 isc_assertion_failed [function] [call site] 00015
4 mem_get [function] [call site] 00016
5 mallocx [function] [call site] 00017
6 isc_assertion_failed [function] [call site] 00018
6 isc_assertion_failed [function] [call site] 00019
5 isc_assertion_failed [function] [call site] 00020
4 mem_getstats [function] [call site] 00021
3 isc__mem_strdup [function] [call site] 00023
4 isc_assertion_failed [function] [call site] 00024
4 isc_assertion_failed [function] [call site] 00025
4 strlen [call site] 00026
4 isc__mem_allocate [function] [call site] 00027
5 isc_assertion_failed [function] [call site] 00028
5 mem_getstats [function] [call site] 00031
3 isc_buffer_allocate [function] [call site] 00033
4 isc_assertion_failed [function] [call site] 00034
4 isc__mem_get [function] [call site] 00035
4 isc_buffer_init [function] [call site] 00036
4 isc_buffer_setmctx [function] [call site] 00037
5 isc_assertion_failed [function] [call site] 00038
1 isc_lex_gettoken [function] [call site] 00039
2 isc_assertion_failed [function] [call site] 00040
2 isc_assertion_failed [function] [call site] 00041
2 isc_buffer_compact [function] [call site] 00042
3 isc_assertion_failed [function] [call site] 00043
2 flockfile [call site] 00044
2 getc_unlocked [call site] 00045
2 ferror [call site] 00046
2 __errno_location [call site] 00047
2 isc___errno2result [function] [call site] 00048
3 isc_string_strerror_r [function] [call site] 00049
4 __xpg_strerror_r [call site] 00050
3 isc_error_unexpected [function] [call site] 00051
2 pushandgrow [function] [call site] 00052
3 isc_buffer_allocate [function] [call site] 00053
3 isc_buffer_usedregion [function] [call site] 00054
4 isc_assertion_failed [function] [call site] 00055
4 isc_assertion_failed [function] [call site] 00056
3 isc_buffer_copyregion [function] [call site] 00057
4 isc_assertion_failed [function] [call site] 00058
4 isc_assertion_failed [function] [call site] 00059
4 isc_buffer_reserve [function] [call site] 00060
5 isc_assertion_failed [function] [call site] 00061
5 isc__mem_get [function] [call site] 00062
5 isc_assertion_failed [function] [call site] 00063
5 isc__mem_reget [function] [call site] 00064
6 isc_assertion_failed [function] [call site] 00065
6 isc__mem_get [function] [call site] 00066
6 isc__mem_put [function] [call site] 00067
7 isc_assertion_failed [function] [call site] 00068
7 mem_putstats [function] [call site] 00069
6 mem_putstats [function] [call site] 00073
6 mem_realloc [function] [call site] 00074
7 rallocx [function] [call site] 00075
8 realloc [call site] 00076
8 isc_assertion_failed [function] [call site] 00077
7 isc_assertion_failed [function] [call site] 00078
6 mem_getstats [function] [call site] 00079
3 isc_assertion_failed [function] [call site] 00080
3 isc_buffer_free [function] [call site] 00081
4 isc_assertion_failed [function] [call site] 00082
4 isc_assertion_failed [function] [call site] 00083
4 isc_buffer_clearmctx [function] [call site] 00084
5 isc_assertion_failed [function] [call site] 00085
5 isc__mem_put [function] [call site] 00086
4 isc_buffer_invalidate [function] [call site] 00087
5 isc_assertion_failed [function] [call site] 00088
5 isc_assertion_failed [function] [call site] 00089
5 isc_assertion_failed [function] [call site] 00090
4 isc__mem_put [function] [call site] 00091
3 isc_buffer_putuint8 [function] [call site] 00092
4 isc_assertion_failed [function] [call site] 00093
4 isc_buffer_reserve [function] [call site] 00094
2 isc_buffer_getuint8 [function] [call site] 00095
3 isc_buffer_peekuint8 [function] [call site] 00096
4 isc_assertion_failed [function] [call site] 00097
3 isc_assertion_failed [function] [call site] 00098
2 __ctype_b_loc [call site] 00099
2 pushback [function] [call site] 00100
3 isc_assertion_failed [function] [call site] 00101
2 __ctype_b_loc [call site] 00102
2 isc_parse_uint32 [function] [call site] 00104
3 __ctype_b_loc [call site] 00105
3 __errno_location [call site] 00106
3 strtoul [call site] 00107
3 __errno_location [call site] 00108
2 grow_data [function] [call site] 00109
3 isc__mem_get [function] [call site] 00110
3 isc__mem_put [function] [call site] 00111
2 isc_assertion_failed [function] [call site] 00112
2 grow_data [function] [call site] 00113
2 isc_assertion_failed [function] [call site] 00114
2 grow_data [function] [call site] 00116
2 isc_assertion_failed [function] [call site] 00117
2 isc_assertion_failed [function] [call site] 00119
2 grow_data [function] [call site] 00121
2 isc_assertion_failed [function] [call site] 00122
2 isc_assertion_failed [function] [call site] 00123
2 grow_data [function] [call site] 00124
2 isc_assertion_failed [function] [call site] 00125
2 isc_error_fatal [function] [call site] 00126
3 abort [call site] 00127
2 funlockfile [call site] 00128