Fuzz introspector: FuzzStun
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
85 0 EP call site: 00000 stun_check_message_integrity_str

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 stun_is_command_message_full_check_str [function] [call site] 00001
2 stun_is_command_message_str [function] [call site] 00002
3 ntohs [call site] 00003
3 ntohl [call site] 00004
3 ntohs [call site] 00005
2 stun_attr_get_first_by_type_str [function] [call site] 00006
3 stun_attr_get_first_str [function] [call site] 00007
4 stun_get_command_message_len_str [function] [call site] 00008
5 ntohs [call site] 00009
4 stun_attr_check_valid [function] [call site] 00010
5 stun_attr_get_len [function] [call site] 00011
6 ntohs [call site] 00012
3 stun_attr_get_type [function] [call site] 00013
4 ntohs [call site] 00014
3 stun_attr_get_next_str [function] [call site] 00015
4 stun_attr_get_first_str [function] [call site] 00016
4 stun_get_command_message_len_str [function] [call site] 00017
4 stun_attr_get_len [function] [call site] 00018
4 stun_attr_check_valid [function] [call site] 00019
2 stun_get_method_str [function] [call site] 00020
3 ntohs [call site] 00021
2 stun_attr_get_len [function] [call site] 00022
2 stun_attr_get_value [function] [call site] 00023
3 ntohs [call site] 00024
2 ns_crc32 [function] [call site] 00025
2 ntohl [call site] 00026
1 strcpy [call site] 00027
1 stun_check_message_integrity_str [function] [call site] 00028
2 strncpy [call site] 00029
2 stun_produce_integrity_key_str [function] [call site] 00030
3 ERR_clear_error [call site] 00031
3 strlen [call site] 00032
3 strlen [call site] 00033
3 strlen [call site] 00034
3 strncpy [call site] 00035
3 strncpy [call site] 00036
3 strncpy [call site] 00037
3 EVP_MD_CTX_new [call site] 00038
3 EVP_sha256 [call site] 00039
3 EVP_DigestInit [call site] 00040
3 EVP_DigestUpdate [call site] 00041
3 EVP_DigestFinal [call site] 00042
3 EVP_MD_CTX_free [call site] 00043
3 EVP_MD_CTX_new [call site] 00044
3 EVP_sha384 [call site] 00045
3 EVP_DigestInit [call site] 00046
3 EVP_DigestUpdate [call site] 00047
3 EVP_DigestFinal [call site] 00048
3 EVP_MD_CTX_free [call site] 00049
3 EVP_MD_CTX_new [call site] 00050
3 EVP_sha512 [call site] 00051
3 EVP_DigestInit [call site] 00052
3 EVP_DigestUpdate [call site] 00053
3 EVP_DigestFinal [call site] 00054
3 EVP_MD_CTX_free [call site] 00055
3 EVP_MD_CTX_new [call site] 00056
3 FIPS_mode [call site] 00057
3 EVP_MD_CTX_set_flags [call site] 00058
3 EVP_md5 [call site] 00059
3 EVP_DigestInit_ex [call site] 00060
3 EVP_DigestUpdate [call site] 00061
3 EVP_DigestFinal [call site] 00062
3 EVP_MD_CTX_free [call site] 00063
2 stun_check_message_integrity_by_key_str [function] [call site] 00064
3 stun_attr_get_first_by_type_str [function] [call site] 00065
3 stun_attr_get_len [function] [call site] 00066
3 stun_get_command_message_len_str [function] [call site] 00067
3 stun_set_command_message_len_str [function] [call site] 00068
4 ntohs [call site] 00069
3 strlen [call site] 00070
3 stun_calculate_hmac [function] [call site] 00071
4 ERR_clear_error [call site] 00072
4 EVP_sha256 [call site] 00073
4 HMAC [call site] 00074
4 EVP_sha384 [call site] 00075
4 HMAC [call site] 00076
4 EVP_sha512 [call site] 00077
4 HMAC [call site] 00078
4 EVP_sha1 [call site] 00079
4 HMAC [call site] 00080
3 get_hmackey_size [function] [call site] 00081
3 stun_calculate_hmac [function] [call site] 00082
3 stun_set_command_message_len_str [function] [call site] 00083
3 stun_attr_get_value [function] [call site] 00084
3 memcmp [call site] 00085