Fuzz introspector: decode_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
483 562 2 :

['_open_seekable2', 'ov_clear']

483 562 _ov_open2 call site: 00165 /src/tremor/vorbisfile.c:930
4 22 2 :

['realloc', 'ogg_stream_clear']

4 22 _os_lacing_expand call site: 00050 /src/ogg/src/framing.c:206
0 23 2 :

['ogg_sync_buffer', 'ogg_sync_wrote']

10 472 _ov_open1 call site: 00003 /src/tremor/vorbisfile.c:886
0 0 None 0 835 _fetch_and_process_packet call site: 00293 /src/tremor/vorbisfile.c:785
0 0 None 0 835 _fetch_and_process_packet call site: 00296 /src/tremor/vorbisfile.c:821
0 0 None 0 169 _make_decode_ready call site: 00236 /src/tremor/vorbisfile.c:594
0 0 None 0 60 _vorbis_synthesis1 call site: 00279 /src/tremor/synthesis.c:35
0 0 None 0 34 _fetch_headers call site: 00142 /src/tremor/vorbisfile.c:332
0 0 None 0 26 _book_unquantize call site: 00260 /src/tremor/sharedbook.c:244
0 0 None 0 26 _book_unquantize call site: 00263 /src/tremor/sharedbook.c:278
0 0 None 0 18 _vds_init call site: 00243 /src/tremor/block.c:167
0 0 None 0 8 _vorbis_unpack_comment call site: 00097 /src/tremor/info.c:211

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 ov_open_callbacks [function] [call site] 00001
2 _ov_open1 [function] [call site] 00002
3 ogg_sync_init [function] [call site] 00003
3 ogg_sync_buffer [function] [call site] 00004
4 ogg_sync_check [function] [call site] 00005
4 ogg_sync_clear [function] [call site] 00006
4 realloc [call site] 00007
4 ogg_sync_clear [function] [call site] 00008
3 ogg_sync_wrote [function] [call site] 00009
4 ogg_sync_check [function] [call site] 00010
3 calloc [call site] 00011
3 calloc [call site] 00012
3 ogg_stream_init [function] [call site] 00013
4 ogg_stream_clear [function] [call site] 00014
3 _fetch_headers [function] [call site] 00015
4 _get_next_page [function] [call site] 00016
5 ogg_sync_pageseek [function] [call site] 00017
6 ogg_sync_check [function] [call site] 00018
6 memcmp [call site] 00019
6 ogg_page_checksum_set [function] [call site] 00020
7 _os_update_crc [function] [call site] 00021
7 _os_update_crc [function] [call site] 00022
6 memcmp [call site] 00023
6 memchr [call site] 00024
5 _get_data [function] [call site] 00025
6 __errno_location [call site] 00026
6 ogg_sync_buffer [function] [call site] 00027
6 ogg_sync_wrote [function] [call site] 00028
6 __errno_location [call site] 00029
4 vorbis_info_init [function] [call site] 00030
5 calloc [call site] 00031
4 vorbis_comment_init [function] [call site] 00032
4 ogg_page_bos [function] [call site] 00033
4 _lookup_page_serialno [function] [call site] 00034
5 ogg_page_serialno [function] [call site] 00035
5 _lookup_serialno [function] [call site] 00036
4 _add_serialno [function] [call site] 00037
5 ogg_page_serialno [function] [call site] 00038
5 realloc [call site] 00039
4 ogg_page_serialno [function] [call site] 00040
4 ogg_stream_pagein [function] [call site] 00041
5 ogg_page_version [function] [call site] 00042
5 ogg_page_continued [function] [call site] 00043
5 ogg_page_bos [function] [call site] 00044
5 ogg_page_eos [function] [call site] 00045
5 ogg_page_granulepos [function] [call site] 00046
5 ogg_page_serialno [function] [call site] 00047
5 ogg_page_pageno [function] [call site] 00048
5 ogg_stream_check [function] [call site] 00049
5 _os_lacing_expand [function] [call site] 00050
6 ogg_stream_clear [function] [call site] 00051
6 realloc [call site] 00052
6 ogg_stream_clear [function] [call site] 00053
6 realloc [call site] 00054
6 ogg_stream_clear [function] [call site] 00055
5 _os_body_expand [function] [call site] 00056
6 ogg_stream_clear [function] [call site] 00057
6 realloc [call site] 00058
6 ogg_stream_clear [function] [call site] 00059
4 ogg_stream_packetout [function] [call site] 00060
5 ogg_stream_check [function] [call site] 00061
5 _packetout [function] [call site] 00062
4 vorbis_synthesis_idheader [function] [call site] 00063
5 oggpack_readinit [function] [call site] 00064
5 oggpack_read [function] [call site] 00065
5 memcmp [call site] 00066
4 vorbis_synthesis_headerin [function] [call site] 00067
5 oggpack_readinit [function] [call site] 00068
5 oggpack_read [function] [call site] 00069
5 _v_readstring [function] [call site] 00070
6 oggpack_read [function] [call site] 00071
5 memcmp [call site] 00072
5 _vorbis_unpack_info [function] [call site] 00073
6 oggpack_read [function] [call site] 00074
6 oggpack_read [function] [call site] 00075
6 oggpack_read [function] [call site] 00076
6 oggpack_read [function] [call site] 00077
6 oggpack_read [function] [call site] 00078
6 oggpack_read [function] [call site] 00079
6 oggpack_read [function] [call site] 00080
6 oggpack_read [function] [call site] 00081
6 oggpack_read [function] [call site] 00082
6 vorbis_info_clear [function] [call site] 00083
7 vorbis_staticbook_destroy [function] [call site] 00084
7 vorbis_book_clear [function] [call site] 00085
5 _vorbis_unpack_comment [function] [call site] 00086
6 oggpack_read [function] [call site] 00087
6 oggpack_bytes [function] [call site] 00088
6 calloc [call site] 00089
6 _v_readstring [function] [call site] 00090
6 oggpack_read [function] [call site] 00091
6 oggpack_bytes [function] [call site] 00092
6 calloc [call site] 00093
6 calloc [call site] 00094
6 oggpack_read [function] [call site] 00095
6 oggpack_bytes [function] [call site] 00096
6 calloc [call site] 00097
6 _v_readstring [function] [call site] 00098
6 oggpack_read [function] [call site] 00099
6 vorbis_comment_clear [function] [call site] 00100
5 _vorbis_unpack_books [function] [call site] 00101
6 oggpack_read [function] [call site] 00102
6 vorbis_staticbook_unpack [function] [call site] 00103
7 calloc [call site] 00104
7 oggpack_read [function] [call site] 00105
7 oggpack_read [function] [call site] 00106
7 _ilog [function] [call site] 00107
7 oggpack_read [function] [call site] 00108
7 oggpack_read [function] [call site] 00109
7 oggpack_bytes [function] [call site] 00110
7 oggpack_read [function] [call site] 00111
7 oggpack_read [function] [call site] 00112
7 oggpack_read [function] [call site] 00113
7 oggpack_read [function] [call site] 00114
7 _ilog [function] [call site] 00115
7 oggpack_read [function] [call site] 00116
7 oggpack_read [function] [call site] 00117
7 oggpack_read [function] [call site] 00118
7 oggpack_read [function] [call site] 00119
7 oggpack_read [function] [call site] 00120
7 oggpack_read [function] [call site] 00121
7 _book_maptype1_quantvals [function] [call site] 00122
8 _ilog [function] [call site] 00123
7 oggpack_bytes [function] [call site] 00124
7 oggpack_read [function] [call site] 00125
6 oggpack_read [function] [call site] 00126
6 oggpack_read [function] [call site] 00127
6 oggpack_read [function] [call site] 00128
6 oggpack_read [function] [call site] 00129
6 oggpack_read [function] [call site] 00130
6 oggpack_read [function] [call site] 00131
6 oggpack_read [function] [call site] 00132
6 oggpack_read [function] [call site] 00133
6 oggpack_read [function] [call site] 00134
6 calloc [call site] 00135
6 oggpack_read [function] [call site] 00136
6 oggpack_read [function] [call site] 00137
6 oggpack_read [function] [call site] 00138
6 oggpack_read [function] [call site] 00139
6 oggpack_read [function] [call site] 00140
6 vorbis_info_clear [function] [call site] 00141
4 _get_next_page [function] [call site] 00142
4 ogg_page_serialno [function] [call site] 00143
4 ogg_stream_pagein [function] [call site] 00144
4 ogg_stream_packetout [function] [call site] 00145
4 vorbis_synthesis_headerin [function] [call site] 00146
4 _get_next_page [function] [call site] 00147
4 ogg_page_serialno [function] [call site] 00148
4 ogg_stream_pagein [function] [call site] 00149
4 ogg_page_bos [function] [call site] 00150
4 vorbis_info_clear [function] [call site] 00151
4 vorbis_comment_clear [function] [call site] 00152
3 ov_clear [function] [call site] 00153
4 vorbis_block_clear [function] [call site] 00154
5 _vorbis_block_ripcord [function] [call site] 00155
6 realloc [call site] 00156
4 vorbis_dsp_clear [function] [call site] 00157
4 ogg_stream_clear [function] [call site] 00158
4 vorbis_info_clear [function] [call site] 00159
4 vorbis_comment_clear [function] [call site] 00160
4 ogg_sync_clear [function] [call site] 00161
3 calloc [call site] 00162
3 calloc [call site] 00163
3 calloc [call site] 00164
2 _ov_open2 [function] [call site] 00165
3 _open_seekable2 [function] [call site] 00166
4 _initial_pcmoffset [function] [call site] 00167
5 _get_next_page [function] [call site] 00168
5 ogg_page_bos [function] [call site] 00169
5 ogg_page_serialno [function] [call site] 00170
5 ogg_stream_pagein [function] [call site] 00171
5 ogg_stream_packetout [function] [call site] 00172
5 vorbis_packet_blocksize [function] [call site] 00173
6 oggpack_readinit [function] [call site] 00174
6 oggpack_read [function] [call site] 00175
5 ogg_page_granulepos [function] [call site] 00176
5 ogg_page_granulepos [function] [call site] 00177
4 _get_prev_page_serial [function] [call site] 00178
5 _seek_helper [function] [call site] 00179
6 ogg_sync_reset [function] [call site] 00180
7 ogg_sync_check [function] [call site] 00181
5 _get_next_page [function] [call site] 00182
5 ogg_page_serialno [function] [call site] 00183
5 ogg_page_granulepos [function] [call site] 00184
5 _lookup_serialno [function] [call site] 00185
4 _bisect_forward_serialno [function] [call site] 00186
5 _lookup_serialno [function] [call site] 00187
5 _get_prev_page_serial [function] [call site] 00188
5 realloc [call site] 00189
5 realloc [call site] 00190
5 _seek_helper [function] [call site] 00191
5 _get_next_page [function] [call site] 00192
5 _lookup_page_serialno [function] [call site] 00193
5 _get_prev_page_serial [function] [call site] 00194
5 _seek_helper [function] [call site] 00195
5 _fetch_headers [function] [call site] 00196
5 _initial_pcmoffset [function] [call site] 00197
5 _bisect_forward_serialno [function] [call site] 00198
4 ov_raw_seek [function] [call site] 00199
5 _decode_clear [function] [call site] 00200
6 vorbis_dsp_clear [function] [call site] 00201
6 vorbis_block_clear [function] [call site] 00202
5 ogg_stream_reset_serialno [function] [call site] 00203
6 ogg_stream_check [function] [call site] 00204
6 ogg_stream_reset [function] [call site] 00205
7 ogg_stream_check [function] [call site] 00206
5 vorbis_synthesis_restart [function] [call site] 00207
5 _seek_helper [function] [call site] 00208
5 ogg_stream_init [function] [call site] 00209
5 ogg_stream_reset [function] [call site] 00210
5 ogg_stream_packetout [function] [call site] 00211
5 vorbis_packet_blocksize [function] [call site] 00212
5 ogg_stream_packetout [function] [call site] 00213
5 ogg_stream_packetout [function] [call site] 00214
5 ogg_stream_packetout [function] [call site] 00215
5 _get_next_page [function] [call site] 00216
5 ov_pcm_total [function] [call site] 00217
6 ov_pcm_total [function] [call site] 00218
5 ogg_page_serialno [function] [call site] 00219
5 ogg_page_bos [function] [call site] 00220
5 _decode_clear [function] [call site] 00221
5 ogg_stream_clear [function] [call site] 00222
5 ogg_page_serialno [function] [call site] 00223
5 ogg_stream_reset_serialno [function] [call site] 00224
5 ogg_stream_reset_serialno [function] [call site] 00225
5 ogg_stream_pagein [function] [call site] 00226
5 ogg_stream_pagein [function] [call site] 00227
5 ogg_page_eos [function] [call site] 00228
5 ogg_stream_clear [function] [call site] 00229
5 ogg_stream_clear [function] [call site] 00230
5 _decode_clear [function] [call site] 00231
3 ov_clear [function] [call site] 00232
1 ov_read [function] [call site] 00233
2 vorbis_synthesis_pcmout [function] [call site] 00234
2 _fetch_and_process_packet [function] [call site] 00235
3 _make_decode_ready [function] [call site] 00236
4 vorbis_synthesis_init [function] [call site] 00237
5 _vds_init [function] [call site] 00238
6 calloc [call site] 00239
6 ilog [function] [call site] 00240
6 _vorbis_window [function] [call site] 00241
6 _vorbis_window [function] [call site] 00242
6 calloc [call site] 00243
6 vorbis_book_init_decode [function] [call site] 00244
7 _make_words [function] [call site] 00245
7 bitreverse [function] [call site] 00246
7 qsort [call site] 00247
7 sort32a [function] [call site] 00248
7 _book_unquantize [function] [call site] 00249
8 _float32_unpack [function] [call site] 00250
8 _float32_unpack [function] [call site] 00251
8 calloc [call site] 00252
8 calloc [call site] 00253
8 _book_maptype1_quantvals [function] [call site] 00254
8 VFLOAT_MULTI [function] [call site] 00255
9 _ilog [function] [call site] 00256
9 VFLOAT_MULT [function] [call site] 00257
10 MULT32 [function] [call site] 00258
8 VFLOAT_ADD [function] [call site] 00259
8 VFLOAT_ADD [function] [call site] 00260
8 VFLOAT_MULTI [function] [call site] 00261
8 VFLOAT_ADD [function] [call site] 00262
8 VFLOAT_ADD [function] [call site] 00263
7 _ilog [function] [call site] 00264
7 calloc [call site] 00265
7 bitreverse [function] [call site] 00266
7 bitreverse [function] [call site] 00267
7 bitreverse [function] [call site] 00268
7 vorbis_book_clear [function] [call site] 00269
6 vorbis_staticbook_destroy [function] [call site] 00270
6 calloc [call site] 00271
6 vorbis_staticbook_destroy [function] [call site] 00272
6 vorbis_dsp_clear [function] [call site] 00273
5 vorbis_synthesis_restart [function] [call site] 00274
4 vorbis_synthesis_init [function] [call site] 00275
4 vorbis_block_init [function] [call site] 00276
3 ogg_stream_packetout [function] [call site] 00277
3 vorbis_synthesis [function] [call site] 00278
4 _vorbis_synthesis1 [function] [call site] 00279
5 _vorbis_block_ripcord [function] [call site] 00280
5 oggpack_readinit [function] [call site] 00281
5 oggpack_read [function] [call site] 00282
5 oggpack_read [function] [call site] 00283
5 oggpack_read [function] [call site] 00284
5 oggpack_read [function] [call site] 00285
5 _vorbis_block_alloc [function] [call site] 00286
5 _vorbis_block_alloc [function] [call site] 00287
3 vorbis_synthesis_pcmout [function] [call site] 00288
3 vorbis_synthesis_blockin [function] [call site] 00289
3 vorbis_synthesis_pcmout [function] [call site] 00290
3 vorbis_synthesis_pcmout [function] [call site] 00291
3 _get_next_page [function] [call site] 00292
3 ogg_page_serialno [function] [call site] 00293
3 _decode_clear [function] [call site] 00294
3 vorbis_info_clear [function] [call site] 00295
3 vorbis_comment_clear [function] [call site] 00296
3 ogg_page_serialno [function] [call site] 00297
3 ogg_stream_reset_serialno [function] [call site] 00298
3 _fetch_headers [function] [call site] 00299
3 ogg_stream_pagein [function] [call site] 00300
2 ov_info [function] [call site] 00301
2 CLIP_TO_15 [function] [call site] 00302
2 vorbis_synthesis_read [function] [call site] 00303
1 ov_clear [function] [call site] 00304