Fuzz introspector: libpcap/testprogs/fuzz/fuzz_both.c
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
591 13 LLVMFuzzerTestOneInput call site: 00013 pcap_compile
8 4 LLVMFuzzerTestOneInput call site: 00004 bufferToFile
1 0 EP call site: 00000

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 pcap_open_offline [function] [call site] 00014
2 pcap_open_offline_with_tstamp_precision [function] [call site] 00015
3 SET_BINMODE [function] [call site] 00018
3 pcapint_charset_fopen [function] [call site] 00019
3 pcapint_fmt_errmsg_for_errno [function] [call site] 00020
4 pcapint_vfmt_errmsg_for_errno [function] [call site] 00022
5 vsnprintf [function] [call site] 00023
5 _wcserror_s [function] [call site] 00025
5 utf_16le_to_utf_8_truncated [function] [call site] 00027
6 IS_LEADING_SURROGATE [function] [call site] 00028
6 IS_TRAILING_SURROGATE [function] [call site] 00029
6 SURROGATE_VALUE [function] [call site] 00030
6 IS_TRAILING_SURROGATE [function] [call site] 00031
5 utf_8_to_acp_truncated [function] [call site] 00032
6 cp_to_utf_16le [function] [call site] 00033
7 MultiByteToWideChar [function] [call site] 00034
7 MultiByteToWideChar [function] [call site] 00036
6 WideCharToMultiByte [function] [call site] 00039
6 GetLastError [function] [call site] 00040
5 pcap_strerror [function] [call site] 00046
6 strerror_s [function] [call site] 00047
6 pcapint_strlcpy [function] [call site] 00048
6 strerror_r [function] [call site] 00049
6 strerror_r [function] [call site] 00050
3 pcap_fopen_offline_with_tstamp_precision [function] [call site] 00056
4 pcapint_fmt_errmsg_for_errno [function] [call site] 00060
1 pcap_compile [function] [call site] 00069
2 WSAStartup [function] [call site] 00071
2 pcapint_fmt_errmsg_for_win32_err [function] [call site] 00073
3 pcapint_vfmt_errmsg_for_win32_err [function] [call site] 00075
4 vsnprintf [function] [call site] 00076
4 FormatMessageW [function] [call site] 00078
4 MAKELANGID [function] [call site] 00079
4 utf_16le_to_utf_8_truncated [function] [call site] 00081
4 utf_8_to_acp_truncated [function] [call site] 00084
2 initchunks_ok [function] [call site] 00086
3 initcurrentchunk_ok [function] [call site] 00087
2 pcap_snapshot [function] [call site] 00097
2 pcap_lex_init [function] [call site] 00099
2 pcapint_fmt_errmsg_for_errno [function] [call site] 00100
2 pcap__scan_string [function] [call site] 00101
2 pcap_set_extra [function] [call site] 00102
2 init_linktype [function] [call site] 00103
3 pcap_datalink [function] [call site] 00104
3 bpf_set_error [function] [call site] 00105
2 pcap_parse [function] [call site] 00106
2 freeaddrinfo [function] [call site] 00107
2 gen_retblk [function] [call site] 00108
3 gen_retblk_internal [function] [call site] 00110
4 new_block [function] [call site] 00111
5 newchunk [function] [call site] 00112
6 newchunk_nolongjmp [function] [call site] 00113
7 bpf_set_error [function] [call site] 00114
7 CHUNKSIZE [function] [call site] 00115
7 bpf_set_error [function] [call site] 00116
7 initcurrentchunk_ok [function] [call site] 00117
2 bpf_optimize [function] [call site] 00119
3 opt_init [function] [call site] 00129
3 opt_loop [function] [call site] 00167
4 opt_dump [function] [call site] 00169
5 dot_dump [function] [call site] 00170
6 icode_to_fcode [function] [call site] 00172
7 unMarkAll [function] [call site] 00175
7 unMarkAll [function] [call site] 00187
6 unMarkAll [function] [call site] 00221
6 dot_dump_node [function] [call site] 00222
7 bpf_image [function] [call site] 00229
8 bpf_print_abs_load_operand [function] [call site] 00232
8 bpf_print_abs_load_operand [function] [call site] 00235
8 bpf_print_abs_load_operand [function] [call site] 00236
8 BPF_CLASS [function] [call site] 00262
7 dot_dump_node [function] [call site] 00275
7 dot_dump_node [function] [call site] 00277
6 unMarkAll [function] [call site] 00279
5 opt_error [function] [call site] 00307
4 opt_blks [function] [call site] 00380
5 opt_blk [function] [call site] 00389
6 BPF_CLASS [function] [call site] 00390
6 opt_stmt [function] [call site] 00393
7 opt_error [function] [call site] 00415
7 opt_error [function] [call site] 00416
7 opt_error [function] [call site] 00429
6 BPF_CLASS [function] [call site] 00442
5 find_inedges [function] [call site] 00498
3 opt_cleanup [function] [call site] 00572
2 icode_to_fcode [function] [call site] 00574
2 pcap__delete_buffer [function] [call site] 00575
2 pcap_lex_destroy [function] [call site] 00576
2 WSACleanup [function] [call site] 00579
1 pcap_next_ex [function] [call site] 00580
2 pcapint_offline_read [function] [call site] 00581
3 PACKET_COUNT_IS_UNLIMITED [function] [call site] 00582
3 pcap_t*::next_packet_op [function] [call site] 00583
3 pcapint_filter [function] [call site] 00584
4 pcapint_filter_with_aux_data [function] [call site] 00585
5 EXTRACT_LONG [function] [call site] 00587
5 EXTRACT_SHORT [function] [call site] 00588
5 EXTRACT_LONG [function] [call site] 00589
5 EXTRACT_SHORT [function] [call site] 00590
2 pcap_t*::read_op [function] [call site] 00591
1 pcap_offline_filter [function] [call site] 00593
2 pcapint_filter [function] [call site] 00594
1 pcap_next_ex [function] [call site] 00595
1 pcap_close [function] [call site] 00602