Fuzz introspector: fuzz_env_jinja_lexer
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
325 0 EP call site: 00000 jinja2.environment.Environment.from_string

Fuzzer calltree

0 ...fuzz_env_jinja_lexer.TestOneInput [function] [call site] 00000
1 atheris.FuzzedDataProvider [function] [call site] 00001
1 fdp.ConsumeString [function] [call site] 00002
1 jinja2.environment.Environment.from_string [function] [call site] 00003
2 jinja2.environment.Environment.make_globals [function] [call site] 00004
3 collections.ChainMap [function] [call site] 00005
2 jinja2.environment.Environment.compile [function] [call site] 00006
3 <builtin>.isinstance [function] [call site] 00007
3 jinja2.environment.Environment._parse [function] [call site] 00008
4 jinja2.parser.Parser.__init__ [function] [call site] 00009
5 jinja2.environment.Environment._tokenize [function] [call site] 00010
6 jinja2.environment.Environment.preprocess [function] [call site] 00011
7 functools.reduce [function] [call site] 00012
7 jinja2.environment.Environment.iter_extensions [function] [call site] 00013
8 <builtin>.sorted [function] [call site] 00014
8 <builtin>.iter [function] [call site] 00015
7 <builtin>.str [function] [call site] 00016
6 jinja2.environment.Environment.iter_extensions [function] [call site] 00017
6 ext.filter_stream [function] [call site] 00018
6 <builtin>.isinstance [function] [call site] 00019
6 jinja2.lexer.TokenStream.__init__ [function] [call site] 00020
7 <builtin>.iter [function] [call site] 00021
7 collections.deque [function] [call site] 00022
7 typing.NamedTuple.__init__ [function] [call site] 00023
7 <builtin>.next [function] [call site] 00024
5 jinja2.environment.Environment.iter_extensions [function] [call site] 00025
4 jinja2.parser.Parser.parse [function] [call site] 00026
5 jinja2.parser.Parser.subparse [function] [call site] 00027
6 jinja2.nodes.Node.__init__ [function] [call site] 00028
7 <builtin>.len [function] [call site] 00029
7 <builtin>.len [function] [call site] 00030
7 <builtin>.zip [function] [call site] 00031
7 <builtin>.setattr [function] [call site] 00032
7 attributes.pop [function] [call site] 00033
7 <builtin>.setattr [function] [call site] 00034
6 <builtin>.next [function] [call site] 00035
6 <builtin>.next [function] [call site] 00036
6 jinja2.parser.Parser.parse_tuple [function] [call site] 00037
7 jinja2.lexer.TokenStream.expect [function] [call site] 00038
8 jinja2.lexer.Token.test [function] [call site] 00039
9 expr.split [function] [call site] 00040
8 jinja2.lexer.describe_token_expr [function] [call site] 00041
9 expr.split [function] [call site] 00042
9 jinja2.lexer._describe_token_type [function] [call site] 00043
8 <builtin>.next [function] [call site] 00044
7 jinja2.parser.Parser.is_tuple_end [function] [call site] 00045
8 jinja2.lexer.Token.test_any [function] [call site] 00046
9 jinja2.lexer.Token.test [function] [call site] 00047
9 <builtin>.any [function] [call site] 00048
7 jinja2.parser.Parser.parse_tuple.parse [function] [call site] 00049
8 jinja2.parser.Parser.parse_primary [function] [call site] 00050
9 <builtin>.next [function] [call site] 00051
9 jinja2.nodes.Node.__init__ [function] [call site] 00052
9 jinja2.nodes.Node.__init__ [function] [call site] 00053
9 <builtin>.next [function] [call site] 00054
9 jinja2.lexer.TokenStream.expect [function] [call site] 00055
9 jinja2.nodes.Node.__init__ [function] [call site] 00056
9 jinja2.nodes.Node.__init__ [function] [call site] 00057
9 <builtin>.next [function] [call site] 00058
9 buf.append [function] [call site] 00059
9 <builtin>.next [function] [call site] 00060
9 jinja2.nodes.Node.__init__ [function] [call site] 00061
9 <builtin>.next [function] [call site] 00062
9 jinja2.nodes.Node.__init__ [function] [call site] 00063
9 <builtin>.next [function] [call site] 00064
9 jinja2.parser.Parser.parse_tuple [function] [call site] 00065
9 jinja2.lexer.TokenStream.expect [function] [call site] 00066
9 jinja2.parser.Parser.parse_list [function] [call site] 00067
10 jinja2.lexer.TokenStream.expect [function] [call site] 00068
10 jinja2.lexer.TokenStream.expect [function] [call site] 00069
10 jinja2.parser.Parser.parse_expression [function] [call site] 00070
11 jinja2.parser.Parser.parse_condexpr [function] [call site] 00071
12 jinja2.parser.Parser.parse_or [function] [call site] 00072
13 jinja2.parser.Parser.parse_and [function] [call site] 00073
14 jinja2.parser.Parser.parse_not [function] [call site] 00074
15 jinja2.lexer.Token.test [function] [call site] 00075
15 <builtin>.next [function] [call site] 00076
15 jinja2.parser.Parser.parse_not [function] [call site] 00077
15 jinja2.nodes.Node.__init__ [function] [call site] 00078
15 jinja2.parser.Parser.parse_compare [function] [call site] 00079
16 jinja2.parser.Parser.parse_math1 [function] [call site] 00080
17 jinja2.parser.Parser.parse_concat [function] [call site] 00081
18 jinja2.parser.Parser.parse_math2 [function] [call site] 00082
19 jinja2.parser.Parser.parse_pow [function] [call site] 00083
20 jinja2.parser.Parser.parse_unary [function] [call site] 00084
21 <builtin>.next [function] [call site] 00085
21 jinja2.parser.Parser.parse_unary [function] [call site] 00086
21 jinja2.nodes.Node.__init__ [function] [call site] 00087
21 <builtin>.next [function] [call site] 00088
21 jinja2.parser.Parser.parse_unary [function] [call site] 00089
21 jinja2.nodes.Node.__init__ [function] [call site] 00090
21 jinja2.parser.Parser.parse_primary [function] [call site] 00091
21 jinja2.parser.Parser.parse_postfix [function] [call site] 00092
22 jinja2.parser.Parser.parse_subscript [function] [call site] 00093
23 <builtin>.next [function] [call site] 00094
23 <builtin>.next [function] [call site] 00095
23 jinja2.nodes.Node.__init__ [function] [call site] 00096
23 jinja2.parser.Parser.fail [function] [call site] 00097
23 jinja2.nodes.Node.__init__ [function] [call site] 00098
23 jinja2.nodes.Node.__init__ [function] [call site] 00099
23 jinja2.lexer.TokenStream.expect [function] [call site] 00100
23 jinja2.parser.Parser.parse_subscribed [function] [call site] 00101
24 <builtin>.next [function] [call site] 00102
24 jinja2.parser.Parser.parse_expression [function] [call site] 00103
24 <builtin>.next [function] [call site] 00104
24 args.append [function] [call site] 00105
24 jinja2.parser.Parser.parse_expression [function] [call site] 00106
24 args.append [function] [call site] 00107
24 args.append [function] [call site] 00108
24 <builtin>.next [function] [call site] 00109
24 jinja2.parser.Parser.parse_expression [function] [call site] 00110
24 args.append [function] [call site] 00111
24 args.append [function] [call site] 00112
24 args.append [function] [call site] 00113
24 jinja2.nodes.Node.__init__ [function] [call site] 00114
23 args.append [function] [call site] 00115
23 jinja2.lexer.TokenStream.expect [function] [call site] 00116
23 <builtin>.len [function] [call site] 00117
23 jinja2.nodes.Node.__init__ [function] [call site] 00118
23 jinja2.nodes.Node.__init__ [function] [call site] 00119
23 jinja2.parser.Parser.fail [function] [call site] 00120
22 jinja2.parser.Parser.parse_call [function] [call site] 00121
23 jinja2.parser.Parser.parse_call_args [function] [call site] 00122
24 jinja2.lexer.TokenStream.expect [function] [call site] 00123
24 jinja2.lexer.TokenStream.expect [function] [call site] 00124
24 jinja2.parser.Parser.parse_call_args.ensure [function] [call site] 00125
25 jinja2.parser.Parser.fail [function] [call site] 00126
24 <builtin>.next [function] [call site] 00127
24 jinja2.parser.Parser.parse_expression [function] [call site] 00128
24 jinja2.parser.Parser.parse_call_args.ensure [function] [call site] 00129
24 <builtin>.next [function] [call site] 00130
24 jinja2.parser.Parser.parse_expression [function] [call site] 00131
24 jinja2.lexer.TokenStream.look [function] [call site] 00132
25 <builtin>.next [function] [call site] 00133
25 jinja2.lexer.TokenStream.push [function] [call site] 00134
24 jinja2.parser.Parser.parse_call_args.ensure [function] [call site] 00135
24 jinja2.lexer.TokenStream.skip [function] [call site] 00136
25 <builtin>.range [function] [call site] 00137
25 <builtin>.next [function] [call site] 00138
24 jinja2.parser.Parser.parse_expression [function] [call site] 00139
24 jinja2.nodes.Node.__init__ [function] [call site] 00140
24 kwargs.append [function] [call site] 00141
24 jinja2.parser.Parser.parse_call_args.ensure [function] [call site] 00142
24 jinja2.parser.Parser.parse_expression [function] [call site] 00143
24 args.append [function] [call site] 00144
24 jinja2.lexer.TokenStream.expect [function] [call site] 00145
23 jinja2.nodes.Node.__init__ [function] [call site] 00146
21 jinja2.parser.Parser.parse_filter_expr [function] [call site] 00147
22 jinja2.parser.Parser.parse_filter [function] [call site] 00148
23 <builtin>.next [function] [call site] 00149
23 jinja2.lexer.TokenStream.expect [function] [call site] 00150
23 <builtin>.next [function] [call site] 00151
23 jinja2.lexer.TokenStream.expect [function] [call site] 00152
23 jinja2.parser.Parser.parse_call_args [function] [call site] 00153
23 jinja2.nodes.Node.__init__ [function] [call site] 00154
22 jinja2.parser.Parser.parse_test [function] [call site] 00155
23 <builtin>.next [function] [call site] 00156
23 jinja2.lexer.Token.test [function] [call site] 00157
23 <builtin>.next [function] [call site] 00158
23 jinja2.lexer.TokenStream.expect [function] [call site] 00159
23 <builtin>.next [function] [call site] 00160
23 jinja2.lexer.TokenStream.expect [function] [call site] 00161
23 jinja2.parser.Parser.parse_call_args [function] [call site] 00162
23 jinja2.lexer.Token.test_any [function] [call site] 00163
23 jinja2.lexer.Token.test [function] [call site] 00164
23 jinja2.parser.Parser.fail [function] [call site] 00165
23 jinja2.parser.Parser.parse_primary [function] [call site] 00166
23 jinja2.parser.Parser.parse_postfix [function] [call site] 00167
23 jinja2.nodes.Node.__init__ [function] [call site] 00168
23 jinja2.nodes.Node.__init__ [function] [call site] 00169
22 jinja2.parser.Parser.parse_call [function] [call site] 00170
20 <builtin>.next [function] [call site] 00171
20 jinja2.parser.Parser.parse_unary [function] [call site] 00172
20 jinja2.nodes.Node.__init__ [function] [call site] 00173
19 <builtin>.next [function] [call site] 00174
19 jinja2.parser.Parser.parse_pow [function] [call site] 00175
18 <builtin>.next [function] [call site] 00176
18 jinja2.parser.Parser.parse_math2 [function] [call site] 00177
18 args.append [function] [call site] 00178
18 <builtin>.len [function] [call site] 00179
18 jinja2.nodes.Node.__init__ [function] [call site] 00180
17 <builtin>.next [function] [call site] 00181
17 jinja2.parser.Parser.parse_concat [function] [call site] 00182
16 <builtin>.next [function] [call site] 00183
16 jinja2.parser.Parser.parse_math1 [function] [call site] 00184
16 jinja2.nodes.Node.__init__ [function] [call site] 00185
16 ops.append [function] [call site] 00186
16 jinja2.lexer.TokenStream.skip_if [function] [call site] 00187
17 jinja2.lexer.TokenStream.next_if [function] [call site] 00188
18 jinja2.lexer.Token.test [function] [call site] 00189
18 <builtin>.next [function] [call site] 00190
16 jinja2.parser.Parser.parse_math1 [function] [call site] 00191
16 jinja2.nodes.Node.__init__ [function] [call site] 00192
16 ops.append [function] [call site] 00193
16 jinja2.lexer.Token.test [function] [call site] 00194
16 jinja2.lexer.TokenStream.look [function] [call site] 00195
16 jinja2.lexer.Token.test [function] [call site] 00196
16 jinja2.lexer.TokenStream.skip [function] [call site] 00197
16 jinja2.parser.Parser.parse_math1 [function] [call site] 00198
16 jinja2.nodes.Node.__init__ [function] [call site] 00199
16 ops.append [function] [call site] 00200
16 jinja2.nodes.Node.__init__ [function] [call site] 00201
14 jinja2.lexer.TokenStream.skip_if [function] [call site] 00202
14 jinja2.parser.Parser.parse_not [function] [call site] 00203
14 jinja2.nodes.Node.__init__ [function] [call site] 00204
13 jinja2.lexer.TokenStream.skip_if [function] [call site] 00205
13 jinja2.parser.Parser.parse_and [function] [call site] 00206
13 jinja2.nodes.Node.__init__ [function] [call site] 00207
12 jinja2.lexer.TokenStream.skip_if [function] [call site] 00208
12 jinja2.parser.Parser.parse_or [function] [call site] 00209
12 jinja2.lexer.TokenStream.skip_if [function] [call site] 00210
12 jinja2.parser.Parser.parse_condexpr [function] [call site] 00211
12 jinja2.nodes.Node.__init__ [function] [call site] 00212
11 jinja2.parser.Parser.parse_or [function] [call site] 00213
10 items.append [function] [call site] 00214
10 jinja2.lexer.TokenStream.expect [function] [call site] 00215
10 jinja2.nodes.Node.__init__ [function] [call site] 00216
9 jinja2.parser.Parser.parse_dict [function] [call site] 00217
10 jinja2.lexer.TokenStream.expect [function] [call site] 00218
10 jinja2.lexer.TokenStream.expect [function] [call site] 00219
10 jinja2.parser.Parser.parse_expression [function] [call site] 00220
10 jinja2.lexer.TokenStream.expect [function] [call site] 00221
10 jinja2.parser.Parser.parse_expression [function] [call site] 00222
10 jinja2.nodes.Node.__init__ [function] [call site] 00223
10 items.append [function] [call site] 00224
10 jinja2.lexer.TokenStream.expect [function] [call site] 00225
10 jinja2.nodes.Node.__init__ [function] [call site] 00226
9 jinja2.lexer.describe_token [function] [call site] 00227
10 jinja2.lexer._describe_token_type [function] [call site] 00228
9 jinja2.parser.Parser.fail [function] [call site] 00229
8 jinja2.parser.Parser.parse_expression [function] [call site] 00230
7 args.append [function] [call site] 00231
7 jinja2.parser.Parser.fail [function] [call site] 00232
7 jinja2.lexer.describe_token [function] [call site] 00233
7 jinja2.nodes.Node.__init__ [function] [call site] 00234
6 jinja2.lexer.TokenStream.expect [function] [call site] 00235
6 jinja2.parser.Parser.subparse.flush_data [function] [call site] 00236
7 jinja2.nodes.Node.__init__ [function] [call site] 00237
7 body.append [function] [call site] 00238
6 <builtin>.next [function] [call site] 00239
6 jinja2.lexer.Token.test_any [function] [call site] 00240
6 jinja2.parser.Parser.parse_statement [function] [call site] 00241
7 jinja2.parser.Parser.fail [function] [call site] 00242
7 <builtin>.getattr [function] [call site] 00243
7 jinja2.parser.Parser.parse_call_block [function] [call site] 00244
8 <builtin>.next [function] [call site] 00245
8 jinja2.nodes.Node.__init__ [function] [call site] 00246
8 jinja2.parser.Parser.parse_signature [function] [call site] 00247
9 jinja2.lexer.TokenStream.expect [function] [call site] 00248
9 jinja2.lexer.TokenStream.expect [function] [call site] 00249
9 jinja2.parser.Parser.parse_assign_target [function] [call site] 00250
10 jinja2.lexer.TokenStream.expect [function] [call site] 00251
10 jinja2.nodes.Node.__init__ [function] [call site] 00252
10 jinja2.parser.Parser.parse_tuple [function] [call site] 00253
10 jinja2.parser.Parser.parse_primary [function] [call site] 00254
10 jinja2.nodes.Node.set_ctx [function] [call site] 00255
11 collections.deque [function] [call site] 00256
11 collections.deque.popleft [function] [call site] 00257
11 node.iter_child_nodes [function] [call site] 00258
11 collections.deque.extend [function] [call site] 00259
10 jinja2.nodes.Expr.can_assign [function] [call site] 00260
10 jinja2.nodes.NSRef.can_assign [function] [call site] 00261
10 jinja2.nodes.Tuple.can_assign [function] [call site] 00262
11 item.can_assign [function] [call site] 00263
10 jinja2.nodes.Name.can_assign [function] [call site] 00264
10 jinja2.parser.Parser.fail [function] [call site] 00265
10 <builtin>.type [function] [call site] 00266
9 jinja2.nodes.Node.set_ctx [function] [call site] 00267
9 jinja2.lexer.TokenStream.skip_if [function] [call site] 00268
9 jinja2.parser.Parser.parse_expression [function] [call site] 00269
9 defaults.append [function] [call site] 00270
9 jinja2.parser.Parser.fail [function] [call site] 00271
9 args.append [function] [call site] 00272
9 jinja2.lexer.TokenStream.expect [function] [call site] 00273
8 jinja2.parser.Parser.parse_expression [function] [call site] 00274
8 <builtin>.isinstance [function] [call site] 00275
8 jinja2.parser.Parser.fail [function] [call site] 00276
8 jinja2.parser.Parser.parse_statements [function] [call site] 00277
9 jinja2.lexer.TokenStream.skip_if [function] [call site] 00278
9 jinja2.lexer.TokenStream.expect [function] [call site] 00279
9 jinja2.parser.Parser.subparse [function] [call site] 00280
9 jinja2.parser.Parser.fail_eof [function] [call site] 00281
10 <builtin>.list [function] [call site] 00282
10 stack.append [function] [call site] 00283
10 jinja2.parser.Parser._fail_ut_eof [function] [call site] 00284
11 <builtin>.set [function] [call site] 00285
11 <builtin>.map [function] [call site] 00286
11 expected.update [function] [call site] 00287
11 <builtin>.map [function] [call site] 00288
11 <builtin>.map [function] [call site] 00289
11 message.append [function] [call site] 00290
11 message.append [function] [call site] 00291
11 message.append [function] [call site] 00292
11 jinja2.parser.Parser.fail [function] [call site] 00293
9 <builtin>.next [function] [call site] 00294
7 jinja2.parser.Parser.parse_filter_block [function] [call site] 00295
8 <builtin>.next [function] [call site] 00296
8 jinja2.nodes.Node.__init__ [function] [call site] 00297
8 jinja2.parser.Parser.parse_filter [function] [call site] 00298
8 jinja2.parser.Parser.parse_statements [function] [call site] 00299
7 jinja2.parser.Parser.fail_unknown_tag [function] [call site] 00300
8 jinja2.parser.Parser._fail_ut_eof [function] [call site] 00301
6 <builtin>.isinstance [function] [call site] 00302
6 body.extend [function] [call site] 00303
6 body.append [function] [call site] 00304
6 jinja2.lexer.TokenStream.expect [function] [call site] 00305
6 jinja2.parser.Parser.subparse.flush_data [function] [call site] 00306
5 jinja2.nodes.Node.__init__ [function] [call site] 00307
5 jinja2.nodes.Node.set_environment [function] [call site] 00308
6 collections.deque [function] [call site] 00309
6 collections.deque.popleft [function] [call site] 00310
6 node.iter_child_nodes [function] [call site] 00311
6 collections.deque.extend [function] [call site] 00312
3 jinja2.environment.Environment._generate [function] [call site] 00313
4 jinja2.compiler.generate [function] [call site] 00314
5 <builtin>.isinstance [function] [call site] 00315
5 environment.code_generator_class [function] [call site] 00316
5 generator.visit [function] [call site] 00317
5 generator.stream.getvalue [function] [call site] 00318
3 jinja2.environment.Environment._compile [function] [call site] 00319
4 jinja2.environment.Environment.compile [function] [call site] 00320
3 jinja2.environment.Environment.handle_exception [function] [call site] 00321
2 cls.from_code [function] [call site] 00322
1 v1.render [function] [call site] 00323
1 traceback.format_exc [function] [call site] 00324
1 <builtin>.str [function] [call site] 00325