Fuzz introspector
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues
Project coverage
Per-fuzzer coverage

Table of contents

Project overview: mruby
High level conclusions
Reachability and coverage overview
Fuzzers overview
Project functions overview
Fuzzer details
Fuzzer: mruby_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: mruby_proto_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Analyses and suggestions
Optimal target analysis
Remaining optimal interesting functions
All functions overview
Runtime coverage analysis
Complex functions with low coverage
Files and Directories in report
Files in report
Directories in report
Metadata section
Function call coverage
Function in each files in report
Report generation date: 2023-03-26

Project overview: mruby

High level conclusions

Reachability and coverage overview

Functions statically reachable by fuzzers
44.4%
1437/3234
Cyclomatic complexity statically reachable by fuzzers
55.6%
9196/16531
Runtime code coverage of functions
42.0%
1351 / 3234

Fuzzers overview

Fuzzer Fuzzer filename Functions Reached Functions unreached Fuzzer depth Files reached Basic blocks reached Cyclomatic complexity Details
mruby_fuzzer /src/mruby/oss-fuzz/mruby_fuzzer.c 1296 1037 79 46 23692 8706 mruby_fuzzer.c
mruby_proto_fuzzer /src/mruby/oss-fuzz/mruby_proto_fuzzer.cpp 1673 1969 81 57 24501 9280 mruby_proto_fuzzer.cpp

Project functions overview

The following table shows data about each function in the project. The functions included in this table correspond to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name Functions filename Args Function call depth Reached by Fuzzers Fuzzers runtime hit Func lines hit % I Count BB Count Cyclomatic complexity Functions reached Reached by functions Accumulated cyclomatic complexity Undiscovered complexity

Fuzzer details

Fuzzer: mruby_fuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Full calltree

Call tree overview bitmap:

The distribution of callsites in terms of coloring is
Color Runtime hitcount Callsite count Percentage
red 0 5714 100.%
gold [1:9] 0 0.0%
yellow [10:29] 0 0.0%
greenyellow [30:49] 0 0.0%
lawngreen 50+ 0 0.0%
All colors 5714 100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
5713 0 EP call site: 00000 mrb_load_string

Runtime coverage analysis

Covered functions
0
Functions that are reachable but not covered
1296
Reachable functions
1296
Percentage of reachable functions covered
0.0%
NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
/src/mruby/oss-fuzz/mruby_fuzzer.c 1
/src/mruby/src/state.c 14
/src/mruby/src/error.c 30
/src/mruby/src/backtrace.c 8
/src/mruby/src/array.c 58
/src/mruby/src/class.c 82
/src/mruby/include/mruby/value.h 11
/src/mruby/src/variable.c 53
/src/mruby/include/mruby/boxing_word.h 3
/src/mruby/src/string.c 104
/src/mruby/src/gc.c 55
/src/mruby/src/object.c 30
/src/mruby/src/debug.c 8
/src/mruby/src/symbol.c 22
/src/mruby/src/etc.c 9
/src/mruby/src/vm.c 51
/src/mruby/src/hash.c 75
/src/mruby/src/range.c 23
/src/mruby/include/mruby/class.h 1
/src/mruby/include/mruby.h 1
/src/mruby/include/mruby/numeric.h 3
/src/mruby/mrbgems/mruby-bigint/core/bigint.c 70
/src/mruby/src/numeric.c 88
/src/mruby/src/kernel.c 23
/src/mruby/mrbgems/mruby-rational/src/rational.c 13
/src/mruby/mrbgems/mruby-complex/src/complex.c 11
/src/mruby/src/value_array.h 1
/src/mruby/src/print.c 2
/src/mruby/src/init.c 1
/src/mruby/include/mruby/istruct.h 1
/src/mruby/src/compar.c 1
/src/mruby/src/enum.c 2
/src/mruby/src/readfloat.c 1
/src/mruby/src/proc.c 12
/src/mruby/src/fmt_fp.c 1
/src/mruby/src/version.c 1
/src/mruby/build/host/mrblib/mrblib.c 2
/src/mruby/src/load.c 1
/src/mruby/include/mruby/internal.h 1
/src/mruby/include/mruby/dump.h 1
/src/mruby/build/host/mrbgems/gem_init.c 3
/src/mruby/mrbgems/mruby-compiler/core/parse.y 173
/src/mruby/src/pool.c 4
/src/mruby/mrbgems/mruby-compiler/core/y.tab.c 7
/src/mruby/src/readint.c 1
/src/mruby/mrbgems/mruby-compiler/core/keywords 2

Fuzzer: mruby_proto_fuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Full calltree

Call tree overview bitmap:

The distribution of callsites in terms of coloring is
Color Runtime hitcount Callsite count Percentage
red 0 3728 62.2%
gold [1:9] 31 0.51%
yellow [10:29] 42 0.70%
greenyellow [30:49] 31 0.51%
lawngreen 50+ 2158 36.0%
All colors 5990 100

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
77599 406945 108 :

['mrb_gc_arena_shrink', 'mrb_intern_static', 'mrb_word_boxing_value_float', 'mrb_define_method_raw', 'mrb_ary_concat', 'localjump_error', 'mrb_bint_sub_ii', 'mrb_ci_kidx', 'mrb_format', 'mrb_hash_key_p', 'mrb_field_write_barrier', 'mrb_hash_empty_p', 'mrb_val_union.4331', 'check_target_class', 'mrb_bool_value.4333', 'mrb_str_concat', 'mrb_vm_special_get', 'mrb_float_value.4339', 'mrb_exc_get_id', 'bin_to_uint32.4335', 'mrb_class.4344', 'mrb_boxing_int_value', 'top_proc', 'argnum_error', 'uvenv', 'mrb_const_get', 'mrb_exc_set', 'mrb_hash_set', 'mrb_int_add_overflow.4329', 'mrb_bint_add_ii', 'mrb_str_plus', 'mrb_ary_entry', 'mrb_hash_dup', 'mrb_intern_str', 'check_method_noarg', 'mrb_bint_mul_ii', 'mrb_vm_const_get', 'mrb_vm_special_set', 'mrb_closure_new', 'longjmp', 'mrb_ary_new_from_values', 'mrb_ary_push', 'mrb_undef_value.4336', 'catch_handler_find', 'prepare_tagged_break', 'mrb_bint_new_str', 'mrb_hash_get', 'mrb_vm_define_module', 'mrb_ci_bidx', 'mrb_vm_define_class', 'mrb_intern', 'mrb_gc_protect', 'cipush', 'cipop', 'mrb_undef_method_id', 'mrb_vm_cv_get', 'mrb_iv_get', 'mrb_str_new', 'mrb_range_new', 'mrb_type.4338', 'hash_new_from_regs', 'mrb_proc_new', 'mrb_hash_new_capa', 'mrb_gv_get', 'mrb_int_mul_overflow.4327', 'value_move', 'mrb_exc_new', 'stack_extend', 'ensure_block', 'mrb_int_sub_overflow.4328', 'mrb_div_int_value', 'mrb_exc_new_str', 'mrb_div_float', 'mrb_symbol_value.4330', 'mrb_integer_func.4337', 'mrb_ary_new_capa', 'mrb_obj_eq', 'stack_copy', 'mrb_iv_set', 'mrb_int_value.4340', 'break_new', 'mrb_ary_splat', 'mrb_vm_const_set', 'mrb_fixnum_value.4334', 'mrb_hash_delete_key', 'mrb_bidx', 'mrb_obj_is_kind_of', 'mrb_const_set', 'stack_clear', 'mrb_hash_keys', 'mrb_write_barrier', 'ary_new_from_regs', 'mrb_singleton_class', 'mrb_nil_value.4342', 'mrb_str_new_static', 'mrb_ensure_hash_type', 'mrb_ary_set', 'mrb_break_tag_get', 'mrb_hash_size', 'mrb_str_aref', 'mrb_alias_method', 'mrb_vm_find_method', 'mrb_vm_cv_set', 'mrb_hash_merge', 'mrb_method_added', 'prepare_missing', 'mrb_word_boxing_float_value', 'mrb_gv_set']

77599 406945 mrb_vm_exec call site: 04142 /src/mruby/src/vm.c:2200
3982 28300 9 :

['new_sym.5848', 'gen_move', 'gen_getupvar', 'genop_0', 'genjmp', 'dispatch', 'genop_2', 'lv_idx', 'genjmp2']

16364 57636 lambda_body call site: 00000 /src/mruby/mrbgems/mruby-compiler/core/codegen.c:1434
3982 3982 1 :

['gen_getupvar']

3982 4054 codegen call site: 00000 /src/mruby/mrbgems/mruby-compiler/core/codegen.c:3198
3980 3980 1 :

['gen_setupvar']

3980 4052 gen_assignment call site: 00000 /src/mruby/mrbgems/mruby-compiler/core/codegen.c:1854
2701 5415 2 :

['new_litbint', 'genop_2']

2701 5487 codegen call site: 00000 /src/mruby/mrbgems/mruby-compiler/core/codegen.c:3306
2700 8343 5 :

['new_sym.5848', 'pop_n_', 'attrsym', 'genop_2', 'genop_3']

2700 11048 codegen call site: 00000 /src/mruby/mrbgems/mruby-compiler/core/codegen.c:2919
2700 2700 1 :

['loop_push']

23046 89866 lambda_body call site: 00000 /src/mruby/mrbgems/mruby-compiler/core/codegen.c:1349
2686 2686 2 :

['io_set_process_status', 'waitpid']

5373 5375 fptr_finalize call site: 00000 /src/mruby/mrbgems/mruby-io/src/io.c:772
2685 2685 1 :

['ar_compress']

2685 2693 ar_set call site: 00000 /src/mruby/src/hash.c:533
2681 5372 5 :

['stack_extend', 'mrb_symbol_value.4330', 'mrb_vm_find_method', 'mrb_ary_unshift', 'mrb_class.4344']

2681 10714 prepare_missing call site: 00788 /src/mruby/src/vm.c:573
2676 2676 1 :

['mrb_yield_with_class']

2676 2676 eval_under call site: 01389 /src/mruby/src/vm.c:892
2673 8019 3 :

['mrb_raisef', 'mrb_any_to_s', 'mrb_exc_get_id']

2673 8019 mrb_type_convert call site: 00736 /src/mruby/src/object.c:370

Runtime coverage analysis

Covered functions
1398
Functions that are reachable but not covered
610
Reachable functions
1673
Percentage of reachable functions covered
63.54%
NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
/src/mruby/oss-fuzz/mruby_proto_fuzzer.cpp 3
/src/mruby/genfiles/ruby.pb.h 112
/src/mruby/genfiles/ruby.pb.cc 6
/src/LPM/external.protobuf/include/google/protobuf/message.h 2
/src/LPM/external.protobuf/include/google/protobuf/message_lite.h 3
/src/LPM/external.protobuf/include/google/protobuf/metadata_lite.h 8
/src/LPM/external.protobuf/include/google/protobuf/generated_message_util.h 1
/src/LPM/external.protobuf/include/google/protobuf/arena.h 1
/src/mruby/oss-fuzz/proto_to_ruby.h 2
/src/mruby/oss-fuzz/proto_to_ruby.cpp 22
/src/LPM/external.protobuf/include/google/protobuf/repeated_ptr_field.h 11
/src/LPM/external.protobuf/include/google/protobuf/arenastring.h 2
/src/mruby/src/state.c 14
/src/mruby/src/error.c 30
/src/mruby/src/backtrace.c 8
/src/mruby/src/array.c 58
/src/mruby/src/class.c 82
/src/mruby/include/mruby/value.h 11
/src/mruby/src/variable.c 53
/src/mruby/include/mruby/boxing_word.h 3
/src/mruby/src/string.c 104
/src/mruby/src/gc.c 55
/src/mruby/src/object.c 30
/src/mruby/src/debug.c 8
/src/mruby/src/symbol.c 22
/src/mruby/src/etc.c 9
/src/mruby/src/vm.c 51
/src/mruby/src/hash.c 75
/src/mruby/src/range.c 23
/src/mruby/include/mruby/class.h 1
/src/mruby/include/mruby.h 1
/src/mruby/include/mruby/numeric.h 3
/src/mruby/mrbgems/mruby-bigint/core/bigint.c 70
/src/mruby/src/numeric.c 88
/src/mruby/src/kernel.c 23
/src/mruby/mrbgems/mruby-rational/src/rational.c 13
/src/mruby/mrbgems/mruby-complex/src/complex.c 11
/src/mruby/src/value_array.h 1
/src/mruby/src/print.c 2
/src/mruby/src/init.c 1
/src/mruby/include/mruby/istruct.h 1
/src/mruby/src/compar.c 1
/src/mruby/src/enum.c 2
/src/mruby/src/readfloat.c 1
/src/mruby/src/proc.c 12
/src/mruby/src/fmt_fp.c 1
/src/mruby/src/version.c 1
/src/mruby/build/host/mrblib/mrblib.c 2
/src/mruby/src/load.c 1
/src/mruby/include/mruby/internal.h 1
/src/mruby/include/mruby/dump.h 1
/src/mruby/build/host/mrbgems/gem_init.c 3
/src/mruby/mrbgems/mruby-compiler/core/parse.y 173
/src/mruby/src/pool.c 4
/src/mruby/mrbgems/mruby-compiler/core/y.tab.c 7
/src/mruby/src/readint.c 1
/src/mruby/mrbgems/mruby-compiler/core/keywords 2

Analyses and suggestions

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination, yield a high code coverage.

Func name Functions filename Arg count Args Function depth hitcount instr count bb count cyclomatic complexity Reachable functions Incoming references total cyclomatic complexity Unreached complexity
GENERATED_TMP_mrb_mruby_io_gem_init /src/mruby/build/host/mrbgems/mruby-io/gem_init.c 1 ['struct.mrb_state.270 *'] 271 0 23 3 2 688 0 3389 601
GENERATED_TMP_mrb_mruby_string_ext_gem_init /src/mruby/build/host/mrbgems/mruby-string-ext/gem_init.c 1 ['struct.mrb_state.270 *'] 270 0 23 3 2 562 0 3101 312
GENERATED_TMP_mrb_mruby_pack_gem_init /src/mruby/build/host/mrbgems/mruby-pack/gem_init.c 1 ['struct.mrb_state.270 *'] 273 0 16 3 2 545 0 3005 309
ruby_fuzzer::Statement::ByteSizeLong()const /src/mruby/genfiles/ruby.pb.cc 1 ['class.ruby_fuzzer::Statement *'] 13 0 109 11 12 249 8 355 292
GENERATED_TMP_mrb_mruby_sprintf_gem_init /src/mruby/build/host/mrbgems/mruby-sprintf/gem_init.c 1 ['struct.mrb_state.270 *'] 272 0 23 3 2 534 0 3103 245
GENERATED_TMP_mrb_mruby_metaprog_gem_init /src/mruby/build/host/mrbgems/mruby-metaprog/gem_init.c 1 ['struct.mrb_state.270 *'] 269 0 16 3 2 574 0 2974 216
GENERATED_TMP_mrb_mruby_socket_gem_init /src/mruby/build/host/mrbgems/mruby-socket/gem_init.c 1 ['struct.mrb_state.270 *'] 270 0 23 3 2 586 0 2948 211

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers
56.7%
1836/3234
Cyclomatic complexity statically reachable by fuzzers
68.0%
11252 / 16531

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

Func name Functions filename Args Function call depth Reached by Fuzzers Fuzzers runtime hit Func lines hit % I Count BB Count Cyclomatic complexity Functions reached Reached by functions Accumulated cyclomatic complexity Undiscovered complexity

Runtime coverage analysis

This section shows analysis of runtime coverage data.

For futher technical details on how this section is generated, please see the Glossary .

Complex functions with low coverage

Func name Function total lines Lines covered at runtime percentage covered Reached by fuzzers
codegen 1399 224 16.01% ['mruby_fuzzer', 'mruby_proto_fuzzer']
gen_assignment 180 33 18.33% ['mruby_fuzzer', 'mruby_proto_fuzzer']
lambda_body 147 56 38.09% ['mruby_fuzzer', 'mruby_proto_fuzzer']
yyparse 3820 636 16.64% ['mruby_fuzzer', 'mruby_proto_fuzzer']
parser_yylex 1238 426 34.41% ['mruby_fuzzer', 'mruby_proto_fuzzer']
parse_string 257 38 14.78% ['mruby_fuzzer', 'mruby_proto_fuzzer']
tokadd 50 25 50.0% ['mruby_fuzzer', 'mruby_proto_fuzzer']
number_literal_suffix 33 15 45.45% ['mruby_fuzzer', 'mruby_proto_fuzzer']
fptr_finalize 45 15 33.33% []
io_mode_to_flags 48 6 12.5% []
io_modestr_to_flags 31 14 45.16% []
mrb_to_time_t 64 14 21.87% []
mrb_ary_aget 31 14 45.16% ['mruby_fuzzer', 'mruby_proto_fuzzer']
get_args_v 376 183 48.67% ['mruby_fuzzer', 'mruby_proto_fuzzer']
mrb_format_float 229 85 37.11% ['mruby_fuzzer', 'mruby_proto_fuzzer']
obj_hash_code 32 14 43.75% ['mruby_fuzzer', 'mruby_proto_fuzzer']
mrb_int_mul 44 13 29.54% ['mruby_fuzzer', 'mruby_proto_fuzzer']
mrb_int_add 33 12 36.36% ['mruby_fuzzer', 'mruby_proto_fuzzer']
mrb_int_sub 31 12 38.70% ['mruby_fuzzer', 'mruby_proto_fuzzer']
cmpnum 36 14 38.88% ['mruby_fuzzer', 'mruby_proto_fuzzer']
int_div 33 16 48.48% ['mruby_fuzzer', 'mruby_proto_fuzzer']
mrb_mod_cv_set 37 17 45.94% ['mruby_fuzzer', 'mruby_proto_fuzzer']
mrb_env_unshare 34 17 50.0% ['mruby_fuzzer', 'mruby_proto_fuzzer']
mrb_protect_error 35 18 51.42% ['mruby_fuzzer', 'mruby_proto_fuzzer']
mrb_vm_exec 1502 730 48.60% ['mruby_fuzzer', 'mruby_proto_fuzzer']
prepare_missing 33 12 36.36% ['mruby_fuzzer', 'mruby_proto_fuzzer']

Files and Directories in report

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file Reached by Covered by
[] []
/src/mruby/src/kernel.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/include/mruby/class.h ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-pack/gem_init.c [] []
/src/mruby/mrbgems/mruby-class-ext/src/class.c [] []
/src/mruby/src/numeric.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-hash-ext/src/hash-ext.c [] []
/src/mruby/build/host/mrbgems/mruby-compar-ext/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-random/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-symbol-ext/gem_init.c [] []
/src/mruby/src/etc.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-pack/src/pack.c [] []
/src/mruby/build/host/mrblib/mrblib.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-io/src/mruby_io_gem.c [] []
/src/mruby/mrbgems/mruby-io/src/io.c [] []
/src/LPM/external.protobuf/include/google/protobuf/wire_format.h [] []
/src/mruby/mrbgems/mruby-range-ext/src/range.c [] []
/src/mruby/src/gc.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/LPM/external.protobuf/include/google/protobuf/metadata_lite.h ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-numeric-ext/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-data/gem_init.c [] []
/src/mruby/src/class.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/src/fmt_fp.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-proc-ext/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-complex/gem_init.c [] []
/src/mruby/mrbgems/mruby-rational/src/rational.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/src/error.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-compiler/core/codegen.c [] []
/src/mruby/build/host/mrbgems/mruby-sprintf/gem_init.c [] []
/src/mruby/mrbgems/mruby-io/src/file.c [] []
/src/LPM/external.protobuf/include/google/protobuf/message.h ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-hash-ext/gem_init.c [] []
/src/mruby/src/print.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] []
/usr/local/bin/../include/c++/v1/stdexcept [] []
/src/mruby/mrbgems/mruby-socket/src/socket.c [] []
/src/mruby/include/mruby/boxing_word.h ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-compiler/core/parse.y ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-objectspace/src/mruby_objectspace.c [] []
/src/mruby/mrbgems/mruby-dir/src/dir.c [] []
/src/LPM/external.protobuf/include/google/protobuf/repeated_field.h [] []
/src/LPM/external.protobuf/include/google/protobuf/arena_impl.h [] []
/src/mruby/build/host/mrbgems/mruby-print/gem_init.c [] []
/src/LPM/external.protobuf/include/google/protobuf/io/coded_stream.h [] []
/src/mruby/mrbgems/mruby-bigint/core/bigint.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-dir/gem_init.c [] []
/src/mruby/src/array.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/include/mruby.h ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/genfiles/ruby.pb.h ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-metaprog/src/metaprog.c [] []
/src/mruby/src/load.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-object-ext/src/object.c [] []
/src/mruby/build/host/mrbgems/mruby-enumerator/gem_init.c [] []
/src/mruby/src/debug.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/include/mruby/dump.h ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-method/src/method.c [] []
/src/mruby/build/host/mrbgems/mruby-enum-lazy/gem_init.c [] []
/src/mruby/src/pool.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-eval/src/eval.c [] []
/src/mruby/mrbgems/mruby-kernel-ext/src/kernel.c [] []
/src/LPM/external.protobuf/include/google/protobuf/has_bits.h [] []
/src/mruby/build/host/mrbgems/mruby-kernel-ext/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-object-ext/gem_init.c [] []
/src/mruby/src/version.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-io/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-objectspace/gem_init.c [] []
/src/mruby/mrbgems/mruby-math/src/math.c [] []
/src/mruby/src/range.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-math/gem_init.c [] []
/src/mruby/mrbgems/mruby-compiler/core/y.tab.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-metaprog/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-time/gem_init.c [] []
/src/mruby/mrbgems/mruby-cmath/src/cmath.c [] []
/src/mruby/src/proc.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-array-ext/src/array.c [] []
/src/mruby/include/mruby/value.h ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/src/value_array.h ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/LPM/external.protobuf/include/google/protobuf/stubs/port.h [] []
/src/mruby/src/string.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-fiber/src/fiber.c [] []
/src/mruby/build/host/mrbgems/gem_init.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-method/gem_init.c [] []
/src/mruby/mrbgems/mruby-compiler/core/keywords ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/include/mruby/internal.h ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-symbol-ext/src/symbol.c [] []
/src/LPM/external.protobuf/include/google/protobuf/unknown_field_set.h [] []
/src/mruby/mrbgems/mruby-io/src/file_test.c [] []
/src/mruby/mrbgems/mruby-sprintf/src/sprintf.c [] []
/src/mruby/build/host/mrbgems/mruby-array-ext/gem_init.c [] []
/src/mruby/mrbgems/mruby-data/src/data.c [] []
/src/mruby/oss-fuzz/proto_to_ruby.h ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/src/readint.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] []
/src/mruby/src/state.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/oss-fuzz/mruby_proto_fuzzer.cpp ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/include/mruby/numeric.h ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-fiber/gem_init.c [] []
/src/mruby/src/object.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-proc-ext/src/proc.c [] []
/src/LPM/external.protobuf/include/google/protobuf/repeated_ptr_field.h ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-socket/gem_init.c [] []
/src/LPM/external.protobuf/include/google/protobuf/arenastring.h ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-print/src/print.c [] []
/src/mruby/src/init.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/src/variable.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/src/codedump.c [] []
/src/mruby/build/host/mrbgems/mruby-range-ext/gem_init.c [] []
/src/mruby/mrbgems/mruby-struct/src/struct.c [] []
/src/mruby/mrbgems/mruby-errno/src/errno.c [] []
/src/LPM/external.protobuf/include/google/protobuf/wire_format_lite.h [] []
/src/mruby/build/host/mrbgems/mruby-struct/gem_init.c [] []
/src/mruby/mrbgems/mruby-string-ext/src/string.c [] []
/src/mruby/src/hash.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/LPM/external.protobuf/include/google/protobuf/generated_message_util.h ['mruby_proto_fuzzer'] []
/src/mruby/src/vm.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-cmath/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-eval/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-rational/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-string-ext/gem_init.c [] []
/src/mruby/include/mruby/khash.h [] []
/src/mruby/oss-fuzz/proto_to_ruby.cpp ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/src/readfloat.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] []
/src/LPM/external.protobuf/include/google/protobuf/message_lite.h ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/build/host/mrbgems/mruby-enum-ext/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-toplevel-ext/gem_init.c [] []
/src/mruby/include/mruby/istruct.h ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-time/src/time.c [] []
/src/mruby/genfiles/ruby.pb.cc ['mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/mrbgems/mruby-random/src/random.c [] []
/src/mruby/mrbgems/mruby-numeric-ext/src/numeric_ext.c [] []
/src/mruby/src/symbol.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/oss-fuzz/mruby_fuzzer.c ['mruby_fuzzer'] []
/src/mruby/src/backtrace.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/include/mruby/data.h [] []
/src/LPM/external.protobuf/include/google/protobuf/arena.h ['mruby_proto_fuzzer'] []
/src/mruby/build/host/mrbgems/mruby-errno/gem_init.c [] []
/src/mruby/build/host/mrbgems/mruby-class-ext/gem_init.c [] []
/src/mruby/src/enum.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/mruby/src/compar.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']
/src/LPM/external.protobuf/include/google/protobuf/parse_context.h [] []
/src/mruby/build/host/mrbgems/mruby-set/gem_init.c [] []
/src/mruby/mrbgems/mruby-complex/src/complex.c ['mruby_fuzzer', 'mruby_proto_fuzzer'] ['mruby_proto_fuzzer']

Directories in report

Directory
/src/mruby/mrbgems/mruby-objectspace/src/
/src/mruby/build/host/mrbgems/mruby-enum-lazy/
/src/mruby/mrbgems/mruby-pack/src/
/src/mruby/build/host/mrbgems/mruby-cmath/
/src/mruby/mrbgems/mruby-method/src/
/src/mruby/build/host/mrbgems/mruby-data/
/src/mruby/build/host/mrbgems/mruby-time/
/src/mruby/mrbgems/mruby-range-ext/src/
/src/mruby/mrbgems/mruby-data/src/
/src/LPM/external.protobuf/include/google/protobuf/stubs/
/src/mruby/mrbgems/mruby-time/src/
/src/mruby/build/host/mrbgems/mruby-socket/
/src/mruby/build/host/mrbgems/mruby-range-ext/
/src/mruby/mrbgems/mruby-io/src/
/src/mruby/mrbgems/mruby-cmath/src/
/src/mruby/build/host/mrbgems/mruby-enumerator/
/usr/local/bin/../include/c++/v1/
/src/mruby/build/host/mrbgems/mruby-method/
/src/mruby/mrbgems/mruby-socket/src/
/src/mruby/mrbgems/mruby-numeric-ext/src/
/src/mruby/build/host/mrbgems/mruby-errno/
/src/mruby/mrbgems/mruby-rational/src/
/src/mruby/build/host/mrbgems/mruby-dir/
/src/mruby/build/host/mrbgems/mruby-compar-ext/
/src/mruby/build/host/mrbgems/mruby-pack/
/src/mruby/build/host/mrbgems/mruby-random/
/src/mruby/mrbgems/mruby-compiler/core/
/src/mruby/build/host/mrbgems/mruby-numeric-ext/
/src/mruby/mrbgems/mruby-math/src/
/src/mruby/mrbgems/mruby-errno/src/
/src/mruby/build/host/mrbgems/mruby-metaprog/
/src/mruby/include/
/src/mruby/build/host/mrbgems/mruby-io/
/src/mruby/build/host/mrbgems/mruby-class-ext/
/src/mruby/build/host/mrbgems/
/src/mruby/build/host/mrbgems/mruby-print/
/src/mruby/build/host/mrbgems/mruby-sprintf/
/src/mruby/mrbgems/mruby-complex/src/
/src/mruby/mrbgems/mruby-kernel-ext/src/
/src/mruby/oss-fuzz/
/src/mruby/build/host/mrbgems/mruby-kernel-ext/
/src/mruby/build/host/mrbgems/mruby-complex/
/src/mruby/build/host/mrbgems/mruby-object-ext/
/src/mruby/mrbgems/mruby-hash-ext/src/
/src/LPM/external.protobuf/include/google/protobuf/io/
/src/mruby/build/host/mrbgems/mruby-rational/
/src/mruby/build/host/mrbgems/mruby-struct/
/src/mruby/mrbgems/mruby-print/src/
/src/mruby/build/host/mrbgems/mruby-proc-ext/
/src/mruby/mrbgems/mruby-metaprog/src/
/src/mruby/build/host/mrbgems/mruby-eval/
/src/mruby/build/host/mrbgems/mruby-enum-ext/
/src/mruby/mrbgems/mruby-proc-ext/src/
/src/LPM/external.protobuf/include/google/protobuf/
/src/mruby/mrbgems/mruby-string-ext/src/
/src/mruby/build/host/mrbgems/mruby-math/
/src/mruby/src/
/src/mruby/mrbgems/mruby-fiber/src/
/src/mruby/build/host/mrbgems/mruby-string-ext/
/src/mruby/mrbgems/mruby-eval/src/
/src/mruby/include/mruby/
/src/mruby/build/host/mrbgems/mruby-array-ext/
/src/mruby/build/host/mrbgems/mruby-hash-ext/
/src/mruby/genfiles/
/src/mruby/mrbgems/mruby-sprintf/src/
/src/mruby/mrbgems/mruby-array-ext/src/
/src/mruby/build/host/mrbgems/mruby-set/
/src/mruby/build/host/mrbgems/mruby-objectspace/
/src/mruby/mrbgems/mruby-symbol-ext/src/
/src/mruby/mrbgems/mruby-class-ext/src/
/src/mruby/mrbgems/mruby-dir/src/
/src/mruby/mrbgems/mruby-bigint/core/
/src/mruby/build/host/mrbgems/mruby-symbol-ext/
/src/mruby/mrbgems/mruby-struct/src/
/src/mruby/mrbgems/mruby-random/src/
/src/mruby/build/host/mrblib/
/src/mruby/mrbgems/mruby-object-ext/src/
/src/mruby/build/host/mrbgems/mruby-toplevel-ext/
/src/mruby/build/host/mrbgems/mruby-fiber/

Metadata section

This sections shows the raw data that is used to produce this report. This is mainly used for further processing and developer debugging.

Fuzzer Calltree file Program data file Coverage file
mruby_fuzzer fuzzerLogFile-0-KjqwK6GdxE.data fuzzerLogFile-0-KjqwK6GdxE.data.yaml mruby_fuzzer.covreport
mruby_proto_fuzzer fuzzerLogFile-0-cug3TnfyWr.data fuzzerLogFile-0-cug3TnfyWr.data.yaml mruby_proto_fuzzer.covreport

Function call coverage

This section shows a chosen list of functions / methods calls and their relative coverage information. By static analysis of the target project code, all of these function call and their caller information, including the source file or class and line number that initiate the call are captured. Column 1 is the function name of that selected functions or methods. Column 2 of each row indicate if the target function covered by any fuzzer calltree information. Column 3 lists all fuzzers (or no fuzzers at all) that have coered that particular function call dynamically. Column 4 shows list of parent function for the specific function call, while column 5 shows possible blocker functions that make the fuzzers fail to reach the specific functions. Both column 4 and 5 will only show information if none of the fuzzers cover the target function calls.

Function in each files in report

Target sink Callsite location Reached by fuzzer Function call path Covered by fuzzer Possible branch blockers
execl Not in fuzzer provided call tree []
Parent functions Callpaths
io_process_exec
in /src/mruby/mrbgems/mruby-io/src/io.c:295
Path 1
0
Blocker function Arguments type Return type Constants touched
mrb_init_io
in /src/mruby/mrbgems/mruby-io/src/io.c:1902 		['struct.mrb_state *'] N/A []