Fuzz introspector: fuzz-aat
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
180 33 Stream::read_bytes call site: 00033 DeltaSetIndexMap::map
129 218 Stream::read_bytes call site: 00218 ItemVariationStore::parse_delta
38 375 Lookup::value call site: 00375 Lookup::parse
25 349 Stream::read_bytes call site: 00349 DeltaSetIndexMap::map
15 3 LazyArray16::len call site: 00003 u16_to_u8_vec
8 22 u16_to_u8_vec call site: 00022 Lookup::parse
1 0 EP call site: 00000

Fuzzer calltree

0 fuzz_target [function] [call site] 00000
1 LazyArray16::len [function] [call site] 00001
2 LazyArray16::len [function] [call site] 00002
3 LazyArray16::len [function] [call site] 00003
1 Vec::split_at [function] [call site] 00004
1 u16::from_be_bytes [function] [call site] 00005
1 LazyArray16::len [function] [call site] 00006
1 Some [function] [call site] 00007
1 u16::from_be_bytes [function] [call site] 00008
1 Cff2::new [function] [call site] 00009
2 Some [function] [call site] 00010
2 Cff2::new [function] [call site] 00011
3 Some [function] [call site] 00012
3 Cff2::new [function] [call site] 00013
3 Cff2::new [function] [call site] 00014
2 Cff2::new [function] [call site] 00015
1 Self::unwrap [function] [call site] 00016
1 random_u16 [function] [call site] 00017
1 u16_to_u8_vec [function] [call site] 00018
2 Vec::with_capacity [function] [call site] 00019
2 LazyArray16::len [function] [call site] 00020
2 GenericStateEntry::has_push [function] [call site] 00021
2 GenericStateEntry::has_push [function] [call site] 00022
1 Lookup::parse [function] [call site] 00023
2 Stream::new [function] [call site] 00024
2 read::<u16> [function] [call site] 00025
2 read::<LookupFlags> [function] [call site] 00026
2 read::<u16> [function] [call site] 00027
2 Stream::read_array16 [function] [call site] 00028
3 usize::num_from [function] [call site] 00029
3 Stream::read_bytes [function] [call site] 00030
4 LazyArray16::len [function] [call site] 00031
4 checked_sub [function] [call site] 00032
4 shared_component_fan_out_is_bounded_by_the_visit_budget [function] [call site] 00033
5 diamond_font [function] [call site] 00034
6 GenericStateEntry::has_push [function] [call site] 00035
6 diamond_composite_glyph [function] [call site] 00036
7 Cff2::new [function] [call site] 00037
7 extend_from_slice [function] [call site] 00038
7 to_be_bytes [function] [call site] 00039
7 extend_from_slice [function] [call site] 00040
7 to_be_bytes [function] [call site] 00041
7 extend_from_slice [function] [call site] 00042
7 to_be_bytes [function] [call site] 00043
7 extend_from_slice [function] [call site] 00044
7 to_be_bytes [function] [call site] 00045
7 extend_from_slice [function] [call site] 00046
7 to_be_bytes [function] [call site] 00047
7 extend_from_slice [function] [call site] 00048
7 AxisValueFlags::to_be_bytes [function] [call site] 00049
7 extend_from_slice [function] [call site] 00050
7 u16::to_be_bytes [function] [call site] 00051
7 extend_from_slice [function] [call site] 00052
7 to_be_bytes [function] [call site] 00053
7 extend_from_slice [function] [call site] 00054
7 to_be_bytes [function] [call site] 00055
6 LazyArray16::len [function] [call site] 00056
6 Cff2::new [function] [call site] 00057
6 Cff2::new [function] [call site] 00058
6 Self::extend_from_slice [function] [call site] 00059
6 LazyArray16::len [function] [call site] 00060
6 to_be_bytes [function] [call site] 00061
6 extend_from_slice [function] [call site] 00062
6 Self::extend_from_slice [function] [call site] 00063
6 LazyArray16::len [function] [call site] 00064
6 to_be_bytes [function] [call site] 00065
6 Cff2::new [function] [call site] 00066
6 Self::extend_from_slice [function] [call site] 00067
6 to_be_bytes [function] [call site] 00068
6 Self::extend_from_slice [function] [call site] 00069
6 to_be_bytes [function] [call site] 00070
6 Self::extend_from_slice [function] [call site] 00071
6 to_be_bytes [function] [call site] 00072
6 Self::extend_from_slice [function] [call site] 00073
6 to_be_bytes [function] [call site] 00074
6 Self::extend_from_slice [function] [call site] 00075
6 to_be_bytes [function] [call site] 00076
6 Self::extend_from_slice [function] [call site] 00077
6 to_be_bytes [function] [call site] 00078
6 Self::extend_from_slice [function] [call site] 00079
6 to_be_bytes [function] [call site] 00080
6 Self::extend_from_slice [function] [call site] 00081
6 to_be_bytes [function] [call site] 00082
6 Self::extend_from_slice [function] [call site] 00083
6 to_be_bytes [function] [call site] 00084
6 Self::extend_from_slice [function] [call site] 00085
6 to_be_bytes [function] [call site] 00086
6 Self::extend_from_slice [function] [call site] 00087
6 to_be_bytes [function] [call site] 00088
6 Self::extend_from_slice [function] [call site] 00089
6 to_be_bytes [function] [call site] 00090
6 Self::extend_from_slice [function] [call site] 00091
6 to_be_bytes [function] [call site] 00092
6 Self::extend_from_slice [function] [call site] 00093
6 to_be_bytes [function] [call site] 00094
6 Self::extend_from_slice [function] [call site] 00095
6 to_be_bytes [function] [call site] 00096
6 Self::extend_from_slice [function] [call site] 00097
6 to_be_bytes [function] [call site] 00098
6 Self::extend_from_slice [function] [call site] 00099
6 to_be_bytes [function] [call site] 00100
6 Cff2::new [function] [call site] 00101
6 Self::extend_from_slice [function] [call site] 00102
6 to_be_bytes [function] [call site] 00103
6 Self::extend_from_slice [function] [call site] 00104
6 to_be_bytes [function] [call site] 00105
6 Self::extend_from_slice [function] [call site] 00106
6 to_be_bytes [function] [call site] 00107
6 Self::extend_from_slice [function] [call site] 00108
6 to_be_bytes [function] [call site] 00109
6 Self::extend_from_slice [function] [call site] 00110
6 Self::extend_from_slice [function] [call site] 00111
6 to_be_bytes [function] [call site] 00112
6 Cff2::new [function] [call site] 00113
6 Self::extend_from_slice [function] [call site] 00114
6 to_be_bytes [function] [call site] 00115
6 Self::extend_from_slice [function] [call site] 00116
6 u16::to_be_bytes [function] [call site] 00117
6 Cff2::new [function] [call site] 00118
6 extend_from_slice [function] [call site] 00119
6 to_be_bytes [function] [call site] 00120
6 extend_from_slice [function] [call site] 00121
6 LazyArray16::len [function] [call site] 00122
6 to_be_bytes [function] [call site] 00123
6 extend_from_slice [function] [call site] 00124
6 to_be_bytes [function] [call site] 00125
6 extend_from_slice [function] [call site] 00126
6 to_be_bytes [function] [call site] 00127
6 extend_from_slice [function] [call site] 00128
6 to_be_bytes [function] [call site] 00129
6 LazyArray16::len [function] [call site] 00130
6 extend_from_slice [function] [call site] 00131
6 extend_from_slice [function] [call site] 00132
6 to_be_bytes [function] [call site] 00133
6 extend_from_slice [function] [call site] 00134
6 to_be_bytes [function] [call site] 00135
6 extend_from_slice [function] [call site] 00136
6 LazyArray16::len [function] [call site] 00137
6 to_be_bytes [function] [call site] 00138
6 LazyArray16::len [function] [call site] 00139
6 extend_from_slice [function] [call site] 00140
5 ttf_parser::Face::parse [function] [call site] 00141
6 Stream::new [function] [call site] 00142
6 read::<Magic> [function] [call site] 00143
6 ok_or [function] [call site] 00144
6 skip::<u32> [function] [call site] 00145
6 read::<u32> [function] [call site] 00146
6 ok_or [function] [call site] 00147
6 read_array32::<Offset32> [function] [call site] 00148
6 ok_or [function] [call site] 00149
6 Vec::get [function] [call site] 00150
7 diamond_font [function] [call site] 00151
7 ttf_parser::Face::parse [function] [call site] 00152
7 Result::unwrap [function] [call site] 00153
7 LazyArray16::default [function] [call site] 00154
7 std::time::Instant::now [function] [call site] 00155
7 VecPainter::outline_glyph [function] [call site] 00156
8 GenericStateEntry::has_push [function] [call site] 00157
8 Command::OutlineGlyph [function] [call site] 00158
7 ttf_parser::GlyphId [function] [call site] 00159
7 elapsed [function] [call site] 00160
6 ok_or [function] [call site] 00161
6 Offset16::to_usize [function] [call site] 00162
7 usize::num_from [function] [call site] 00163
6 checked_sub [function] [call site] 00164
6 Vec::offset [function] [call site] 00165
7 short_offsets [function] [call site] 00166
8 convert [function] [call site] 00167
9 Vec::with_capacity [function] [call site] 00168
9 convert_type [function] [call site] 00169
10 Vec::extend_from_slice [function] [call site] 00170
10 Vec::extend_from_slice [function] [call site] 00171
10 Vec::extend_from_slice [function] [call site] 00172
10 Vec::extend_from_slice [function] [call site] 00173
10 Vec::extend_from_slice [function] [call site] 00174
10 i8::to_be_bytes [function] [call site] 00175
10 Vec::extend_from_slice [function] [call site] 00176
10 u8::to_be_bytes [function] [call site] 00177
10 Vec::extend_from_slice [function] [call site] 00178
10 i16::to_be_bytes [function] [call site] 00179
10 Vec::extend_from_slice [function] [call site] 00180
10 u16::to_be_bytes [function] [call site] 00181
10 Vec::extend_from_slice [function] [call site] 00182
10 i32::to_be_bytes [function] [call site] 00183
10 Vec::extend_from_slice [function] [call site] 00184
10 u32::to_be_bytes [function] [call site] 00185
10 GenericStateEntry::has_push [function] [call site] 00186
10 GenericStateEntry::has_push [function] [call site] 00187
10 GenericStateEntry::has_push [function] [call site] 00188
10 GenericStateEntry::has_push [function] [call site] 00189
10 GenericStateEntry::has_push [function] [call site] 00190
10 GenericStateEntry::has_push [function] [call site] 00191
10 Vec::extend_from_slice [function] [call site] 00192
10 i16::to_be_bytes [function] [call site] 00193
10 GenericStateEntry::has_push [function] [call site] 00194
10 Vec::extend_from_slice [function] [call site] 00195
10 i32::to_be_bytes [function] [call site] 00196
8 DeltaSetIndexMap::map [function] [call site] 00197
9 Stream::new [function] [call site] 00198
9 read::<u8> [function] [call site] 00199
9 read::<u8> [function] [call site] 00200
9 read::<u16> [function] [call site] 00201
9 read::<u32> [function] [call site] 00202
9 usize::num_from [function] [call site] 00203
9 Stream::advance_checked [function] [call site] 00204
10 LazyArray16::len [function] [call site] 00205
10 checked_sub [function] [call site] 00206
10 Stream::advance [function] [call site] 00207
10 Some [function] [call site] 00208
9 usize::num_from [function] [call site] 00209
9 Self::checked_mul [function] [call site] 00210
9 usize::try_from [function] [call site] 00211
9 ok [function] [call site] 00212
9 Stream::read_bytes [function] [call site] 00213
10 LazyArray16::len [function] [call site] 00214
10 checked_sub [function] [call site] 00215
10 shared_component_fan_out_is_bounded_by_the_visit_budget [function] [call site] 00216
10 Stream::advance [function] [call site] 00217
10 Some [function] [call site] 00218
9 usize::num_from [function] [call site] 00219
9 usize::num_from [function] [call site] 00220
9 Some [function] [call site] 00221
9 u16::try_from [function] [call site] 00222
9 ok [function] [call site] 00223
9 u16::try_from [function] [call site] 00224
9 ok [function] [call site] 00225
8 UInt16 [function] [call site] 00226
8 .count).map(|i| [call site] 00227
7 Table::parse [function] [call site] 00228
8 Stream::new [function] [call site] 00229
8 skip::<u16> [function] [call site] 00230
8 read::<u16> [function] [call site] 00231
8 read_array16::<EncodingRecord> [function] [call site] 00232
8 Some [function] [call site] 00233
7 nzu16 [function] [call site] 00234
8 NonZeroU16::new [function] [call site] 00235
8 Self::unwrap [function] [call site] 00236
7 Option::unwrap [function] [call site] 00237
6 ok_or [function] [call site] 00238
6 Stream::advance_checked [function] [call site] 00239
6 Option::ok_or [function] [call site] 00240
6 read::<Magic> [function] [call site] 00241
6 ok_or [function] [call site] 00242
6 Err [function] [call site] 00243
6 Err [function] [call site] 00244
6 read::<u16> [function] [call site] 00245
6 ok_or [function] [call site] 00246
6 Vec::advance [function] [call site] 00247
7 face_from_ptr [function] [call site] 00248
7 &'static [call site] 00249
8 ttfp_get_glyph_hor_advance [function] [call site] 00250
9 face_from_ptr [function] [call site] 00251
9 &'static [call site] 00252
9 Option::unwrap_or [function] [call site] 00253
8 Face::is_variable [function] [call site] 00254
9 is_some [function] [call site] 00255
8 Table::advance_offset [function] [call site] 00256
9 DeltaSetIndexMap::new [function] [call site] 00257
9 shared_component_fan_out_is_bounded_by_the_visit_budget [function] [call site] 00258
9 Offset16::to_usize [function] [call site] 00259
9 DeltaSetIndexMap::map [function] [call site] 00260
10 Stream::new [function] [call site] 00261
10 read::<u8> [function] [call site] 00262
10 read::<u8> [function] [call site] 00263
10 read::<u16> [function] [call site] 00264
10 read::<u32> [function] [call site] 00265
10 usize::num_from [function] [call site] 00266
10 Stream::advance_checked [function] [call site] 00267
10 usize::num_from [function] [call site] 00268
10 Self::checked_mul [function] [call site] 00269
10 usize::try_from [function] [call site] 00270
10 ok [function] [call site] 00271
10 Stream::read_bytes [function] [call site] 00272
10 usize::num_from [function] [call site] 00273
10 usize::num_from [function] [call site] 00274
10 Some [function] [call site] 00275
10 u16::try_from [function] [call site] 00276
10 ok [function] [call site] 00277
10 u16::try_from [function] [call site] 00278
10 ok [function] [call site] 00279
9 ItemVariationStore::parse_delta [function] [call site] 00280
10 shared_component_fan_out_is_bounded_by_the_visit_budget [function] [call site] 00281
10 Stream::new_at [function] [call site] 00282
11 LazyArray16::len [function] [call site] 00283
11 Some [function] [call site] 00284
10 usize::num_from [function] [call site] 00285
10 read::<u16> [function] [call site] 00286
10 read::<u16> [function] [call site] 00287
10 read::<u16> [function] [call site] 00288
10 read_array16::<u16> [function] [call site] 00289
10 Vec::advance [function] [call site] 00290
10 usize::num_from [function] [call site] 00291
10 Self::checked_mul [function] [call site] 00292
10 usize::num_from [function] [call site] 00293
10 Option::get [function] [call site] 00294
11 diamond_font [function] [call site] 00295
11 ttf_parser::Face::parse [function] [call site] 00296
11 Result::unwrap [function] [call site] 00297
11 LazyArray16::default [function] [call site] 00298
11 std::time::Instant::now [function] [call site] 00299
11 VecPainter::outline_glyph [function] [call site] 00300
11 ttf_parser::GlyphId [function] [call site] 00301
11 elapsed [function] [call site] 00302
10 read::<i32> [function] [call site] 00303
10 usize::num_from [function] [call site] 00304
10 read::<i16> [function] [call site] 00305
10 VariationRegionList::evaluate_region [function] [call site] 00306
11 LazyArray16::into_iter [function] [call site] 00307
11 Self::IntoIter::enumerate [function] [call site] 00308
11 shared_component_fan_out_is_bounded_by_the_visit_budget [function] [call site] 00309
11 RegionAxisCoordinatesRecord::evaluate_axis [function] [call site] 00310
12 usize::num_from [function] [call site] 00311
12 usize::num_from [function] [call site] 00312
12 usize::num_from [function] [call site] 00313
12 usize::num_from [function] [call site] 00314
11 shared_component_fan_out_is_bounded_by_the_visit_budget [function] [call site] 00315
10 Option::get [function] [call site] 00316
10 usize::num_from [function] [call site] 00317
10 read::<i16> [function] [call site] 00318
10 usize::num_from [function] [call site] 00319
10 read::<i8> [function] [call site] 00320
10 VariationRegionList::evaluate_region [function] [call site] 00321
10 Some [function] [call site] 00322
8 Face::coords [function] [call site] 00323
9 VarCoords::as_slice [function] [call site] 00324
10 usize::num_from [function] [call site] 00325
8 Face::glyph_phantom_points [function] [call site] 00326
9 Face::glyph_phantom_points [function] [call site] 00327
10 Face::glyph_phantom_points [function] [call site] 00328
10 Face::coords [function] [call site] 00329
9 Face::coords [function] [call site] 00330
8 u16::try_num_from [function] [call site] 00331
9 i32::try_num_from [function] [call site] 00332
10 Some [function] [call site] 00333
9 Option::and_then [function] [call site] 00334
9 u16::try_from [function] [call site] 00335
9 ok [function] [call site] 00336
8 ttfp_get_glyph_hor_advance [function] [call site] 00337
7 Option::unwrap_or [function] [call site] 00338
6 read_array16::<TableRecord> [function] [call site] 00339
6 ok_or [function] [call site] 00340
6 Ok [function] [call site] 00341
5 Result::unwrap [function] [call site] 00342
5 LazyArray16::default [function] [call site] 00343
5 std::time::Instant::now [function] [call site] 00344
5 VecPainter::outline_glyph [function] [call site] 00345
5 ttf_parser::GlyphId [function] [call site] 00346
5 elapsed [function] [call site] 00347
4 Stream::advance [function] [call site] 00348
4 Some [function] [call site] 00349
3 DeltaSetIndexMap::map [function] [call site] 00350
4 Stream::new [function] [call site] 00351
4 read::<u8> [function] [call site] 00352
4 read::<u8> [function] [call site] 00353
4 read::<u16> [function] [call site] 00354
4 read::<u32> [function] [call site] 00355
4 usize::num_from [function] [call site] 00356
4 Stream::advance_checked [function] [call site] 00357
4 usize::num_from [function] [call site] 00358
4 Self::checked_mul [function] [call site] 00359
4 usize::try_from [function] [call site] 00360
4 ok [function] [call site] 00361
4 Stream::read_bytes [function] [call site] 00362
4 usize::num_from [function] [call site] 00363
4 usize::num_from [function] [call site] 00364
4 Some [function] [call site] 00365
4 u16::try_from [function] [call site] 00366
4 ok [function] [call site] 00367
4 u16::try_from [function] [call site] 00368
4 ok [function] [call site] 00369
2 LookupFlags::use_mark_filtering_set [function] [call site] 00370
2 Some [function] [call site] 00371
2 read::<u16> [function] [call site] 00372
2 Some [function] [call site] 00373
1 Lookup::value [function] [call site] 00374
2 Lookup::value [function] [call site] 00375
1 ttf_parser::GlyphId [function] [call site] 00376
1 Lookup::value [function] [call site] 00377
1 ttf_parser::GlyphId [function] [call site] 00378
1 random_u16 [function] [call site] 00379
1 u16_to_u8_vec [function] [call site] 00380
1 Lookup::parse [function] [call site] 00381
1 Lookup::value [function] [call site] 00382
1 ttf_parser::GlyphId [function] [call site] 00383
1 Lookup::value [function] [call site] 00384
1 ttf_parser::GlyphId [function] [call site] 00385
1 random_u16 [function] [call site] 00386
1 u16_to_u8_vec [function] [call site] 00387
1 Lookup::parse [function] [call site] 00388
1 Lookup::value [function] [call site] 00389
1 ttf_parser::GlyphId [function] [call site] 00390
1 Lookup::value [function] [call site] 00391
1 ttf_parser::GlyphId [function] [call site] 00392
1 random_u16 [function] [call site] 00393
1 u16_to_u8_vec [function] [call site] 00394
1 Lookup::parse [function] [call site] 00395
1 Lookup::value [function] [call site] 00396
1 ttf_parser::GlyphId [function] [call site] 00397
1 Lookup::value [function] [call site] 00398
1 ttf_parser::GlyphId [function] [call site] 00399
1 random_u16 [function] [call site] 00400
1 u16_to_u8_vec [function] [call site] 00401
1 Lookup::parse [function] [call site] 00402
1 Lookup::value [function] [call site] 00403
1 ttf_parser::GlyphId [function] [call site] 00404
1 Lookup::value [function] [call site] 00405
1 ttf_parser::GlyphId [function] [call site] 00406
1 random_u16 [function] [call site] 00407
1 u16_to_u8_vec [function] [call site] 00408
1 Lookup::parse [function] [call site] 00409
1 Lookup::value [function] [call site] 00410
1 ttf_parser::GlyphId [function] [call site] 00411
1 Lookup::value [function] [call site] 00412
1 ttf_parser::GlyphId [function] [call site] 00413