Fuzz introspector: tests/fuzzing/fuzz_hpack.cc
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
443 0 EP call site: 00000 hpack_decode_header_block

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 HTTPHdr::HTTPHdr [function] [call site] 00001
1 std::unique_ptr::create [function] [call site] 00002
1 hpack_decode_header_block [function] [call site] 00003
2 mime_field_create [function] [call site] 00004
3 HdrHeap::allocate_obj [function] [call site] 00005
4 ink_assert [function] [call site] 00006
4 swoc::SWOC_VERSION_NS::detail::scale_conversion_round_up [function] [call site] 00007
4 static_cast<int> [function] [call site] 00008
4 ink_assert [function] [call site] 00009
4 static_cast<unsigned> [function] [call site] 00010
4 reinterpret_cast<HdrHeapObjImpl [call site] 00011
4 obj_init_header [function] [call site] 00012
5 static_cast<uint32_t> [function] [call site] 00013
4 ink_assert [function] [call site] 00014
4 obj_is_aligned [function] [call site] 00015
4 new_HdrHeap [function] [call site] 00016
5 static_cast<HdrHeap [call site] 00017
5 THREAD_ALLOC [function] [call site] 00018
5 this_ethread [function] [call site] 00019
5 static_cast<HdrHeap [call site] 00020
5 ats_malloc [function] [call site] 00021
6 ink_abort [function] [call site] 00025
7 abort [function] [call site] 00034
8 TSVConnAbort [function] [call site] 00035
9 sdk_assert [function] [call site] 00036
9 sdk_sanity_check_iocore_structure [function] [call site] 00037
9 reinterpret_cast<VConnection [call site] 00038
9 do_io_close [function] [call site] 00039
10 ink_assert [function] [call site] 00040
8 close [function] [call site] 00041
9 drainReader [function] [call site] 00042
10 reader_avail_more_than [function] [call site] 00043
11 TSIOBufferReaderStart [function] [call site] 00044
12 sdk_assert [function] [call site] 00045
12 sdk_sanity_check_iocore_structure [function] [call site] 00046
12 IOBufferReader::skip_empty_blocks [function] [call site] 00047
13 IOBufferReader::block_read_avail [function] [call site] 00048
14 IOBufferReader::skip_empty_blocks [function] [call site] 00049
15 IOBufferReader::block_read_avail [function] [call site] 00050
14 static_cast<int64_t> [function] [call site] 00053
14 IOBufferReader::end [function] [call site] 00054
15 IOBufferReader::skip_empty_blocks [function] [call site] 00055
15 IOBufferReader::end [function] [call site] 00056
14 IOBufferReader::start [function] [call site] 00057
15 IOBufferReader::skip_empty_blocks [function] [call site] 00058
15 IOBufferReader::start [function] [call site] 00059
12 reinterpret_cast<TSIOBufferBlock> [function] [call site] 00062
12 IOBufferReader::get_current_block [function] [call site] 00063
13 get [function] [call site] 00064
14 static_cast<pcre2_match_data [call site] 00065
11 TSIOBufferBlockReadAvail [function] [call site] 00066
12 sdk_assert [function] [call site] 00067
12 sdk_sanity_check_iocore_structure [function] [call site] 00068
12 sdk_assert [function] [call site] 00069
12 sdk_sanity_check_iocore_structure [function] [call site] 00070
12 IOBufferReader::block_read_avail [function] [call site] 00071
13 IOBufferReader::skip_empty_blocks [function] [call site] 00072
13 static_cast<int64_t> [function] [call site] 00073
13 IOBufferReader::end [function] [call site] 00074
13 IOBufferReader::start [function] [call site] 00075
12 get [function] [call site] 00076
13 static_cast<pcre2_match_data [call site] 00077
11 TSIOBufferBlockNext [function] [call site] 00078
12 sdk_assert [function] [call site] 00079
12 sdk_sanity_check_iocore_structure [function] [call site] 00080
12 get [function] [call site] 00081
13 static_cast<pcre2_match_data [call site] 00082
10 TSIOBufferReaderAvail [function] [call site] 00083
11 sdk_assert [function] [call site] 00084
11 sdk_sanity_check_iocore_structure [function] [call site] 00085
11 IOBufferReader::block_read_avail [function] [call site] 00086
12 IOBufferReader::skip_empty_blocks [function] [call site] 00087
12 static_cast<int64_t> [function] [call site] 00088
12 IOBufferReader::end [function] [call site] 00089
12 IOBufferReader::start [function] [call site] 00090
10 TSIOBufferReaderConsume [function] [call site] 00091
11 sdk_assert [function] [call site] 00092
11 sdk_sanity_check_iocore_structure [function] [call site] 00093
11 sdk_assert [function] [call site] 00094
11 Io_buffer_consume::Io_buffer_consume [function] [call site] 00095
10 TSVIONDoneSet [function] [call site] 00096
11 sdk_assert [function] [call site] 00097
11 sdk_sanity_check_iocore_structure [function] [call site] 00098
11 sdk_assert [function] [call site] 00099
10 TSVIONDoneGet [function] [call site] 00100
11 sdk_assert [function] [call site] 00101
11 sdk_sanity_check_iocore_structure [function] [call site] 00102
5 async_rsa_init [function] [call site] 00104
6 RSA_meth_get_init [function] [call site] 00105
6 RSA_PKCS1_OpenSSL [function] [call site] 00106
3 _mime_hdr_field_block_init [function] [call site] 00107
3 mime_field_init [function] [call site] 00108
2 hpack_parse_field_type [function] [call site] 00110
3 ink_assert [function] [call site] 00111
2 decode_indexed_header_field [function] [call site] 00112
3 xpack_decode_integer [function] [call site] 00113
4 static_cast<uint64_t> [function] [call site] 00114
3 HpackIndexingTable::get_header_field [function] [call site] 00115
4 MIMEFieldWrapper::name_set [function] [call site] 00116
5 MIMEFieldWrapper::name_set [function] [call site] 00117
5 static_cast<std::string_view::size_type> [function] [call site] 00118
4 RegexMatches::size [function] [call site] 00120
4 MIMEFieldWrapper::value_set [function] [call site] 00121
5 MIMEFieldWrapper::value_set [function] [call site] 00122
5 static_cast<std::string_view::size_type> [function] [call site] 00123
4 RegexMatches::size [function] [call site] 00125
4 count [function] [call site] 00126
5 RegexMatches::size [function] [call site] 00127
4 lookup_relative [function] [call site] 00128
4 MIMEFieldWrapper::name_set [function] [call site] 00129
4 MIMEFieldWrapper::value_set [function] [call site] 00130
3 MIMEFieldWrapper::name_get [function] [call site] 00132
4 MIMEFieldWrapper::name_get [function] [call site] 00133
3 MIMEFieldWrapper::value_get [function] [call site] 00134
4 MIMEFieldWrapper::value_get [function] [call site] 00135
3 static_cast<int> [function] [call site] 00137
3 length [function] [call site] 00138
4 static_cast<int> [function] [call site] 00139
4 std::string::size [function] [call site] 00140
3 static_cast<int> [function] [call site] 00142
2 decode_literal_header_field [function] [call site] 00145
3 hpack_parse_field_type [function] [call site] 00146
3 xpack_decode_integer [function] [call site] 00147
3 xpack_decode_integer [function] [call site] 00148
3 ink_assert [function] [call site] 00149
3 xpack_decode_integer [function] [call site] 00150
3 HpackIndexingTable::get_header_field [function] [call site] 00151
3 xpack_decode_string [function] [call site] 00152
4 xpack_decode_integer [function] [call site] 00153
4 static_cast<uint64_t> [function] [call site] 00154
4 Arena::str_alloc [function] [call site] 00155
5 static_cast<unsigned [call site] 00156
5 Arena::alloc [function] [call site] 00157
6 ink_assert [function] [call site] 00158
6 block_alloc [function] [call site] 00159
6 static_cast<unsigned [call site] 00160
6 blk_alloc [function] [call site] 00161
7 static_cast<ArenaBlock [call site] 00162
7 alloc_void [function] [call site] 00163
7 static_cast<ArenaBlock [call site] 00164
7 ats_malloc [function] [call site] 00165
6 block_alloc [function] [call site] 00166
5 static_cast<unsigned [call site] 00167
5 static_cast<unsigned [call site] 00168
5 reinterpret_cast<char [call site] 00169
4 huffman_decode [function] [call site] 00170
5 litespeed::lshpack_dec_huff_decode_full [function] [call site] 00171
6 litespeed::hdec_huff_dec4bits [function] [call site] 00172
6 litespeed::hdec_huff_dec4bits [function] [call site] 00173
4 Arena::str_alloc [function] [call site] 00174
4 memcpy [function] [call site] 00175
5 std::string_view::size [function] [call site] 00178
4 reinterpret_cast<const [call site] 00179
3 ParseRules::is_upalpha [function] [call site] 00180
4 static_cast<unsigned [call site] 00181
3 MIMEFieldWrapper::name_set [function] [call site] 00182
3 Arena::str_free [function] [call site] 00183
4 reinterpret_cast<unsigned [call site] 00184
4 Arena::free [function] [call site] 00185
5 static_cast<char [call site] 00186
5 static_cast<char [call site] 00187
3 xpack_decode_string [function] [call site] 00188
3 MIMEFieldWrapper::value_set [function] [call site] 00189
3 Arena::str_free [function] [call site] 00190
3 MIMEFieldWrapper::field_get [function] [call site] 00191
3 HpackIndexingTable::add_header_field [function] [call site] 00192
4 insert_entry [function] [call site] 00193
3 value_get [function] [call site] 00195
3 MIMEFieldWrapper::name_get [function] [call site] 00197
3 MIMEFieldWrapper::value_get [function] [call site] 00198
3 static_cast<int> [function] [call site] 00200
3 static_cast<int> [function] [call site] 00203
2 update_dynamic_table_size [function] [call site] 00206
3 xpack_decode_integer [function] [call site] 00207
3 HpackIndexingTable::update_maximum_size [function] [call site] 00208
4 HpackIndexingTable::update_maximum_size [function] [call site] 00209
2 value_get [function] [call site] 00211
2 mime_hdr_field_attach [function] [call site] 00214
3 MIME_HDR_SANITY_CHECK [function] [call site] 00215
3 is_detached [function] [call site] 00216
3 ink_assert [function] [call site] 00217
3 is_dup_head [function] [call site] 00218
3 mime_hdr_field_find [function] [call site] 00220
4 hdrtoken_is_wks [function] [call site] 00221
4 ink_assert [function] [call site] 00223
4 std::string_view::empty [function] [call site] 00224
4 static_cast<int> [function] [call site] 00226
4 length [function] [call site] 00227
5 static_cast<int> [function] [call site] 00228
5 std::string::size [function] [call site] 00229
4 hdrtoken_wks_to_prefix [function] [call site] 00231
5 ink_assert [function] [call site] 00232
5 hdrtoken_is_wks [function] [call site] 00233
5 reinterpret_cast<HdrTokenHeapPrefix [call site] 00234
5 const_cast<char [call site] 00235
4 mime_hdr_get_accelerator_slotnum [function] [call site] 00238
5 ink_assert [function] [call site] 00239
4 _mime_hdr_field_list_search_by_slotnum [function] [call site] 00240
4 ink_assert [function] [call site] 00241
4 static_cast<int> [function] [call site] 00244
4 static_cast<int> [function] [call site] 00248
4 _mime_hdr_field_list_search_by_wks [function] [call site] 00251
5 ink_assert [function] [call site] 00252
5 hdrtoken_is_valid_wks_idx [function] [call site] 00253
4 ink_assert [function] [call site] 00255
4 static_cast<int> [function] [call site] 00258
4 _mime_hdr_field_list_search_by_string [function] [call site] 00261
5 ink_assert [function] [call site] 00262
5 strcasecmp [function] [call site] 00264
6 std::string_view::size [function] [call site] 00265
6 std::string_view::size [function] [call site] 00266
6 std::string_view::size [function] [call site] 00267
6 std::string_view::size [function] [call site] 00268
6 std::string_view::size [function] [call site] 00269
6 std::string_view::size [function] [call site] 00270
6 ::strncasecmp [function] [call site] 00273
5 static_cast<std::string_view::size_type> [function] [call site] 00276
4 ink_assert [function] [call site] 00277
4 static_cast<int> [function] [call site] 00280
3 ink_assert [function] [call site] 00283
3 is_dup_head [function] [call site] 00284
3 mime_hdr_field_slotnum [function] [call site] 00285
4 SSLNetVConnection::protocol_contains [function] [call site] 00286
5 SSLNetVConnection::map_tls_protocol_to_tag [function] [call site] 00287
5 TLSBasicSupport::get_tls_protocol_name [function] [call site] 00288
6 SSLNetVConnection::_get_ssl_object [function] [call site] 00289
6 SSL_get_version [function] [call site] 00290
5 std::string_view::size [function] [call site] 00291
5 std::string_view::size [function] [call site] 00292
5 std::string_view::size [function] [call site] 00296
5 SSLNetVConnection::protocol_contains [function] [call site] 00298
6 SSLNetVConnection::map_tls_protocol_to_tag [function] [call site] 00299
6 TLSBasicSupport::get_tls_protocol_name [function] [call site] 00300
6 std::string_view::size [function] [call site] 00301
6 std::string_view::size [function] [call site] 00302
6 std::string_view::size [function] [call site] 00306
6 SSLNetVConnection::protocol_contains [function] [call site] 00308
3 mime_hdr_field_slotnum [function] [call site] 00309
3 mime_hdr_field_slotnum [function] [call site] 00310
3 ink_assert [function] [call site] 00311
3 mime_hdr_set_accelerators_and_presence_bits [function] [call site] 00312
4 ink_assert [function] [call site] 00313
4 mime_hdr_presence_set [function] [call site] 00314
5 mime_field_presence_mask [function] [call site] 00315
6 hdrtoken_wks_to_mask [function] [call site] 00316
7 ink_assert [function] [call site] 00317
7 hdrtoken_is_wks [function] [call site] 00318
7 hdrtoken_wks_to_prefix [function] [call site] 00319
4 hdrtoken_index_to_slotid [function] [call site] 00320
5 ink_assert [function] [call site] 00321
5 hdrtoken_is_valid_wks_idx [function] [call site] 00322
4 SSLNetVConnection::protocol_contains [function] [call site] 00323
5 SSLNetVConnection::map_tls_protocol_to_tag [function] [call site] 00324
5 TLSBasicSupport::get_tls_protocol_name [function] [call site] 00325
5 std::string_view::size [function] [call site] 00326
5 std::string_view::size [function] [call site] 00327
5 std::string_view::size [function] [call site] 00331
5 SSLNetVConnection::protocol_contains [function] [call site] 00333
4 mime_hdr_set_accelerator_slotnum [function] [call site] 00334
5 ink_assert [function] [call site] 00335
5 ink_assert [function] [call site] 00336
3 ink_assert [function] [call site] 00337
3 ink_assert [function] [call site] 00338
3 ink_assert [function] [call site] 00339
3 mime_hdr_set_accelerators_and_presence_bits [function] [call site] 00341
3 ink_assert [function] [call site] 00342
3 is_cooked [function] [call site] 00344
3 MIMEHdrImpl::recompute_cooked_stuff [function] [call site] 00345
4 mime_hdr_cooked_stuff_init [function] [call site] 00346
4 mime_hdr_field_find [function] [call site] 00347
4 static_cast<std::string_view> [function] [call site] 00348
4 MIMEField::has_dups [function] [call site] 00349
4 value_get [function] [call site] 00350
4 ptr_len_casecmp [function] [call site] 00351
5 ParseRules::ink_tolower [function] [call site] 00352
6 static_cast<unsigned [call site] 00353
5 ParseRules::ink_tolower [function] [call site] 00354
4 ptr_len_casecmp [function] [call site] 00357
4 HdrCsvIter::HdrCsvIter [function] [call site] 00360
4 HdrCsvIter::get_first [function] [call site] 00361
5 HdrCsvIter::get_first [function] [call site] 00362
5 static_cast<int> [function] [call site] 00363
5 RegexMatches::size [function] [call site] 00364
4 HdrCsvIter::get_next [function] [call site] 00366
5 HdrCsvIter::find_csv [function] [call site] 00367
6 find_first_of [function] [call site] 00370
6 take_prefix [function] [call site] 00371
6 remove_prefix [function] [call site] 00372
6 remove_suffix [function] [call site] 00374
6 HdrCsvIter::field_init [function] [call site] 00375
4 ParseRules::is_token [function] [call site] 00377
5 static_cast<unsigned [call site] 00378
5 ParseRules::is_char [function] [call site] 00379
6 static_cast<unsigned [call site] 00380
5 ParseRules::is_ctl [function] [call site] 00381
6 static_cast<unsigned [call site] 00382
5 ParseRules::is_tspecials [function] [call site] 00383
6 static_cast<unsigned [call site] 00384
4 hdrtoken_tokenize [function] [call site] 00385
5 ink_assert [function] [call site] 00386
5 hdrtoken_is_wks [function] [call site] 00387
5 hdrtoken_wks_to_index [function] [call site] 00388
6 ink_assert [function] [call site] 00389
6 hdrtoken_is_wks [function] [call site] 00390
6 hdrtoken_wks_to_prefix [function] [call site] 00391
5 hdrtoken_hash [function] [call site] 00392
6 ATSHash32FNV1a::ATSHash32FNV1a [function] [call site] 00393
7 ATSHash32FNV1a::clear [function] [call site] 00394
6 ATSHash32FNV1a::update [function] [call site] 00395
6 equal_nocase [function] [call site] 00397
7 strncasecmp [function] [call site] 00398
6 ATSHash32FNV1a::final [function] [call site] 00399
6 ATSHash32FNV1a::get [function] [call site] 00400
5 reinterpret_cast<const [call site] 00401
5 static_cast<unsigned [call site] 00402
5 hash_to_slot [function] [call site] 00403
6 TINY_MASK [function] [call site] 00404
5 hdrtoken_wks_to_length [function] [call site] 00405
6 ink_assert [function] [call site] 00406
6 hdrtoken_is_wks [function] [call site] 00407
6 hdrtoken_wks_to_prefix [function] [call site] 00408
5 hdrtoken_wks_to_index [function] [call site] 00409
4 hdrtoken_wks_to_prefix [function] [call site] 00412
4 mime_parse_integer [function] [call site] 00414
5 ParseRules::is_space [function] [call site] 00418
6 static_cast<unsigned [call site] 00419
4 mime_hdr_field_find [function] [call site] 00428
4 static_cast<std::string_view> [function] [call site] 00429
4 MIMEField::has_dups [function] [call site] 00430
4 value_get [function] [call site] 00431
4 ptr_len_casecmp [function] [call site] 00432
4 HdrCsvIter::HdrCsvIter [function] [call site] 00435
4 HdrCsvIter::get_first [function] [call site] 00436
4 HdrCsvIter::get_next [function] [call site] 00437
4 ParseRules::is_token [function] [call site] 00438
4 hdrtoken_tokenize [function] [call site] 00439
3 MIME_HDR_SANITY_CHECK [function] [call site] 00441
1 std::unique_ptr::get [function] [call site] 00442
1 std::unique_ptr::destroy [function] [call site] 00443