High level conclusions

Fuzzers reach 50.08% of cyclomatic complexity.

Fuzzers reach 50.0% of all functions.

Fuzzer decoder_fuzz_test is blocked:

The runtime code coverage of decoder_fuzz_test covers 6.626% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer encoder_fuzz_test is blocked:

The runtime code coverage of encoder_fuzz_test covers 11.15% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer detokenize_fuzzer is blocked:

The runtime code coverage of detokenize_fuzzer covers 8.088% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer uart_transport_fuzzer is blocked:

The runtime code coverage of uart_transport_fuzzer covers 4.845% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Reachability and coverage overview

Functions statically reachable by fuzzers

471 / 942

Cyclomatic complexity statically reachable by fuzzers

1417 / 2829

Runtime code coverage of functions

55 / 942

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: uart_transport_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

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	168	74.6%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	1	0.44%
lawngreen	50+	56	24.8%
All colors	225	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
121	34	pw::bluetooth_hci::CommandPacket::Decode(pw::span , cpp20::endian)	call site: 00034	pw_assert_HandleFailure
12	1	LLVMFuzzerTestOneInput	call site: 00001	__clang_call_terminate
7	169	pw::bluetooth_hci::AsyncDataPacket::Decode(pw::span , cpp20::endian)	call site: 00169	pw_assert_HandleFailure
6	187	pw::bluetooth_hci::SyncDataPacket::Decode(pw::span , cpp20::endian)	call site: 00187	pw_assert_HandleFailure
6	204	pw::bluetooth_hci::EventPacket::Decode(pw::span )	call site: 00204	pw_assert_HandleFailure
3	29	pw::bluetooth_hci::CommandPacket::Decode(pw::span , cpp20::endian)	call site: 00029
3	214	pw::bluetooth_hci::DecodeHciUartData(pw::span , fit::function_impl<8ul, true, void (pw::bluetooth_hci::Packet const&), std::__1::allocator > const&)	call site: 00214
2	17	pw::bluetooth_hci::DecodeHciUartData(pw::span , fit::function_impl<8ul, true, void (pw::bluetooth_hci::Packet const&), std::__1::allocator > const&)	call site: 00017
2	158	pw::bluetooth_hci::DecodeHciUartData(pw::span , fit::function_impl<8ul, true, void (pw::bluetooth_hci::Packet const&), std::__1::allocator > const&)	call site: 00158
2	222	LLVMFuzzerTestOneInput	call site: 00222
1	14	LLVMFuzzerTestOneInput	call site: 00014
1	20	pw::bluetooth_hci::DecodeHciUartData(pw::span , fit::function_impl<8ul, true, void (pw::bluetooth_hci::Packet const&), std::__1::allocator > const&)	call site: 00020

Runtime coverage analysis

Covered functions

7

Functions that are reachable but not covered

216

Reachable functions

227

Percentage of reachable functions covered

4.85%

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
/proc/self/cwd/pw_bluetooth_hci/uart_transport_fuzzer.cc	2
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/fit/include/lib/fit/function.h	3
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/fit/include/lib/fit/internal/function.h	11
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/fit/include/lib/fit/internal/../nullable.h	1
/proc/self/cwd/pw_span/public/pw_span/internal/span_impl.h	19
/proc/self/cwd/pw_bluetooth_hci/uart_transport.cc	1
/proc/self/cwd/pw_bluetooth_hci/packet.cc	4
/proc/self/cwd/pw_bytes/public/pw_bytes/endian.h	4
/proc/self/cwd/pw_bluetooth_hci/public/pw_bluetooth_hci/packet.h	10
/proc/self/cwd/pw_assert_basic/assert_basic.cc	1
/proc/self/cwd/pw_assert_basic/basic_handler.cc	2
/proc/self/cwd/pw_sys_io_stdio/sys_io.cc	2
/proc/self/cwd/pw_sys_io/sys_io.cc	1
/proc/self/cwd/pw_status/public/pw_status/status.h	9
/proc/self/cwd/pw_status/public/pw_status/status_with_size.h	10
/proc/self/cwd/pw_string/public/pw_string/string_builder.h	10
/proc/self/cwd/pw_string/string_builder.cc	8
/proc/self/cwd/pw_string/public/pw_string/util.h	2
/proc/self/cwd/pw_string/public/pw_string/internal/length.h	1
/proc/self/cwd/pw_string/format.cc	1
/usr/local/bin/../include/c++/v1/optional	5

Fuzzer: detokenize_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

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	78	70.2%
gold	[1:9]	1	0.90%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	32	28.8%
All colors	111	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
46	48	pw::tokenizer::StringSegment::Decode(pw::span const&) const	call site: 00048	pw_varint_Decode64
11	35	pw::tokenizer::DetokenizedString::DetokenizedString(unsigned int, pw::span const, 18446744073709551615ul> const&, pw::span const&)	call site: 00035
4	2	LLVMFuzzerTestOneInput	call site: 00002
4	8	pw::tokenizer::Detokenizer::Detokenizer(pw::tokenizer::TokenDatabase const&)	call site: 00008
3	22	pw::tokenizer::Detokenizer::Detokenize(pw::span const&) const	call site: 00022
3	104	LLVMFuzzerTestOneInput	call site: 00104
2	17	pw::tokenizer::Detokenizer::Detokenize(pw::span const&) const	call site: 00017
1	14	LLVMFuzzerTestOneInput	call site: 00014
1	26	pw::tokenizer::Detokenizer::Detokenize(pw::span const&) const	call site: 00026
1	28	pw::tokenizer::Detokenizer::Detokenize(pw::span const&) const	call site: 00028
1	31	pw::tokenizer::Detokenizer::Detokenize(pw::span const&) const	call site: 00031
1	98	pw::tokenizer::FormatString::Format(pw::span ) const	call site: 00098

Runtime coverage analysis

Covered functions

8

Functions that are reachable but not covered

125

Reachable functions

136

Percentage of reachable functions covered

8.09%

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
/proc/self/cwd/pw_tokenizer/detokenize_fuzzer.cc	1
/proc/self/cwd/pw_tokenizer/public/pw_tokenizer/token_database.h	8
/proc/self/cwd/pw_tokenizer/detokenize.cc	3
/proc/self/cwd/pw_tokenizer/public/pw_tokenizer/detokenize.h	5
/proc/self/cwd/pw_span/public/pw_span/internal/span_impl.h	15
/proc/self/cwd/pw_bytes/public/pw_bytes/endian.h	4
/proc/self/cwd/pw_tokenizer/decode.cc	8
/proc/self/cwd/pw_tokenizer/public/pw_tokenizer/internal/decode.h	11
/proc/self/cwd/pw_varint/public/pw_varint/varint.h	3
/proc/self/cwd/pw_varint/varint_c.c	1

Fuzzer: encoder_fuzz_test

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

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	251	62.5%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	150	37.4%
All colors	401	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
114	35	pw::protobuf::StreamEncoder::UpdateStatusForWrite(unsigned int, pw::protobuf::WireType, unsigned long)	call site: 00035	putchar
21	4	pw::protobuf::fuzz::(anonymous namespace)::TestOneInput(FuzzedDataProvider&)	call site: 00004
18	203	pw::protobuf::fuzz::(anonymous namespace)::RecursiveFuzzedEncode(FuzzedDataProvider&, pw::protobuf::StreamEncoder&, unsigned int)	call site: 00203
13	153	pw::protobuf::StreamEncoder::UpdateStatusForWrite(unsigned int, pw::protobuf::WireType, unsigned long)	call site: 00153	pw_assert_HandleFailure
8	183	pw::protobuf::StreamEncoder::WriteVarintField(unsigned int, unsigned long)	call site: 00183	pw_varint_Encode64
6	265	pw::protobuf::fuzz::(anonymous namespace)::RecursiveFuzzedEncode(FuzzedDataProvider&, pw::protobuf::StreamEncoder&, unsigned int)	call site: 00265
5	192	pw_varint_Encode64	call site: 00192	pw_assert_HandleFailure
5	364	pw::protobuf::StreamEncoder::WriteLengthDelimitedField(unsigned int, pw::span )	call site: 00364
3	167	pw::protobuf::StreamEncoder::UpdateStatusForWrite(unsigned int, pw::protobuf::WireType, unsigned long)	call site: 00167
3	283	pw::protobuf::fuzz::(anonymous namespace)::RecursiveFuzzedEncode(FuzzedDataProvider&, pw::protobuf::StreamEncoder&, unsigned int)	call site: 00283
3	309	pw::protobuf::fuzz::(anonymous namespace)::RecursiveFuzzedEncode(FuzzedDataProvider&, pw::protobuf::StreamEncoder&, unsigned int)	call site: 00309
3	332	pw::protobuf::fuzz::(anonymous namespace)::RecursiveFuzzedEncode(FuzzedDataProvider&, pw::protobuf::StreamEncoder&, unsigned int)	call site: 00332

Runtime coverage analysis

Covered functions

28

Functions that are reachable but not covered

414

Reachable functions

466

Percentage of reachable functions covered

11.16%

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
/proc/self/cwd/pw_protobuf/encoder_fuzzer.cc	13
/proc/self/cwd/pw_span/public/pw_span/internal/span_impl.h	39
/proc/self/cwd/pw_protobuf/public/pw_protobuf/encoder.h	36
/proc/self/cwd/pw_status/public/pw_status/status.h	10
/proc/self/cwd/pw_stream/public/pw_stream/memory_stream.h	5
/proc/self/cwd/pw_stream/public/pw_stream/stream.h	10
/proc/self/cwd/pw_protobuf/encoder.cc	7
/proc/self/cwd/pw_varint/public/pw_varint/varint.h	7
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/stdcompat/include/lib/stdcompat/bit.h	1
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/stdcompat/include/lib/stdcompat/internal/bit.h	1
/proc/self/cwd/pw_assert_basic/basic_handler.cc	2
/proc/self/cwd/pw_sys_io_stdio/sys_io.cc	2
/proc/self/cwd/pw_sys_io/sys_io.cc	1
/proc/self/cwd/pw_status/public/pw_status/status_with_size.h	9
/proc/self/cwd/pw_string/public/pw_string/string_builder.h	10
/proc/self/cwd/pw_string/string_builder.cc	8
/proc/self/cwd/pw_string/public/pw_string/util.h	2
/proc/self/cwd/pw_string/public/pw_string/internal/length.h	1
/proc/self/cwd/pw_string/format.cc	1
/proc/self/cwd/pw_status/public/pw_status/try.h	1
/proc/self/cwd/pw_protobuf/public/pw_protobuf/wire_format.h	3
/proc/self/cwd/pw_protobuf/public/pw_protobuf/serialized_size.h	4
/proc/self/cwd/pw_assert_basic/assert_basic.cc	1
/proc/self/cwd/pw_result/public/pw_result/result.h	4
/proc/self/cwd/pw_result/public/pw_result/internal/result_internal.h	1
/proc/self/cwd/pw_varint/varint_c.c	1
/proc/self/cwd/pw_bytes/public/pw_bytes/endian.h	5
/proc/self/cwd/pw_assert/public/pw_assert/internal/check_impl.h	2

Fuzzer: decoder_fuzz_test

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

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	241	48.8%
gold	[1:9]	2	0.40%
yellow	[10:29]	6	1.21%
greenyellow	[30:49]	12	2.43%
lawngreen	50+	232	47.0%
All colors	493	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
116	16	pw::protobuf::StreamDecoder::Next()	call site: 00016	putchar
15	149	pw::varint::Read(pw::stream::Reader&, unsigned long*, unsigned long)	call site: 00149	pw_assert_HandleFailure
9	185	pw::protobuf::StreamDecoder::Advance(unsigned long)	call site: 00185
8	172	pw::varint::Read(pw::stream::Reader&, unsigned long*, unsigned long)	call site: 00172
5	134	pw::protobuf::StreamDecoder::Next()	call site: 00134	pw_assert_basic_HandleFailure
5	262	pw::protobuf::StreamDecoder::ReadVarintField(pw::span , pw::protobuf::internal::VarintType)	call site: 00262
4	5	pw::protobuf::fuzz::(anonymous namespace)::TestOneInput(FuzzedDataProvider&)	call site: 00005
4	488	pw::protobuf::fuzz::(anonymous namespace)::TestOneInput(FuzzedDataProvider&)	call site: 00488
3	10	pw::protobuf::fuzz::(anonymous namespace)::TestOneInput(FuzzedDataProvider&)	call site: 00010
3	140	pw::varint::Read(pw::stream::Reader&, unsigned long*, unsigned long)	call site: 00140
3	145	pw::varint::Read(pw::stream::Reader&, unsigned long*, unsigned long)	call site: 00145
3	223	pw::protobuf::fuzz::(anonymous namespace)::RecursiveFuzzedDecode(FuzzedDataProvider&, pw::protobuf::StreamDecoder&, unsigned int)	call site: 00223

Runtime coverage analysis

Covered functions

18

Functions that are reachable but not covered

465

Reachable functions

498

Percentage of reachable functions covered

6.63%

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
/proc/self/cwd/pw_protobuf/decoder_fuzzer.cc	3
/proc/self/cwd/pw_span/public/pw_span/internal/span_impl.h	42
/proc/self/cwd/pw_stream/public/pw_stream/memory_stream.h	2
/proc/self/cwd/pw_stream/public/pw_stream/stream.h	12
/proc/self/cwd/pw_protobuf/public/pw_protobuf/stream_decoder.h	42
/proc/self/cwd/pw_status/public/pw_status/status.h	12
/proc/self/cwd/pw_protobuf/stream_decoder.cc	14
/proc/self/cwd/pw_assert_basic/basic_handler.cc	2
/proc/self/cwd/pw_sys_io_stdio/sys_io.cc	2
/proc/self/cwd/pw_sys_io/sys_io.cc	1
/proc/self/cwd/pw_status/public/pw_status/status_with_size.h	12
/proc/self/cwd/pw_string/public/pw_string/string_builder.h	10
/proc/self/cwd/pw_string/string_builder.cc	8
/proc/self/cwd/pw_string/public/pw_string/util.h	2
/proc/self/cwd/pw_string/public/pw_string/internal/length.h	1
/proc/self/cwd/pw_string/format.cc	1
/proc/self/cwd/pw_status/public/pw_status/try.h	2
/proc/self/cwd/pw_protobuf/public/pw_protobuf/wire_format.h	6
/proc/self/cwd/pw_varint/stream.cc	1
/proc/self/cwd/pw_assert_basic/assert_basic.cc	1
/proc/self/cwd/pw_result/public/pw_result/result.h	16
/proc/self/cwd/pw_result/public/pw_result/internal/result_internal.h	2
/proc/self/cwd/pw_varint/public/pw_varint/varint.h	1
/proc/self/cwd/pw_assert/public/pw_assert/internal/check_impl.h	1

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
pw::protobuf::StreamDecoder::Read(pw::span ,pw::span )	/proc/self/cwd/pw_protobuf/stream_decoder.cc	5	['class.pw::protobuf::StreamDecoder *', 'size_t', 'char *', 'size_t', 'class.pw::protobuf::internal::MessageField *']	18	0	1243	216	40	436	1	673	305
pw::protobuf::StreamEncoder::Write(pw::span ,pw::span )	/proc/self/cwd/pw_protobuf/encoder.cc	5	['class.pw::protobuf::StreamEncoder *', 'size_t', 'char *', 'size_t', 'class.pw::protobuf::internal::MessageField *']	19	0	1688	307	71	402	1	637	235
pw::tokenizer::Detokenizer::DetokenizeBase64(std::__1::basic_string_view >)const	/proc/self/cwd/pw_tokenizer/detokenize.cc	4	['class.std::__1::basic_string *', 'class.pw::tokenizer::Detokenizer *', 'char *', 'size_t']	14	0	63	7	6	173	0	362	117
pw::tokenizer::FormatString::FormatString(charconst*)	/proc/self/cwd/pw_tokenizer/decode.cc	2	['class.pw::tokenizer::FormatString *', 'char *']	3	0	148	25	24	31	0	85	85
pw::bluetooth_hci::SyncDataPacket::Encode(pw::span ,cpp20::endian)const	/proc/self/cwd/pw_bluetooth_hci/packet.cc	5	['class.pw::Result *', 'class.pw::bluetooth_hci::CommandPacket *', 'size_t', 'char *', 'int']	12	0	92	8	3	171	0	200	39
pw::string::FloatAsIntToString(float,pw::span )	/proc/self/cwd/pw_string/type_to_string.cc	3	['float', 'size_t', 'char *']	6	0	126	17	7	51	0	70	39
pw::tokenizer::DetokenizedString::BestStringWithErrors()const	/proc/self/cwd/pw_tokenizer/detokenize.cc	2	['class.std::__1::basic_string *', 'class.pw::tokenizer::DetokenizedString *']	2	0	45	9	4	6	0	36	36
pw::tokenizer::Detokenizer::FromElfSection(pw::span )	/proc/self/cwd/pw_tokenizer/detokenize.cc	3	['class.pw::Result *', 'size_t', 'char *']	12	0	173	24	21	145	0	189	35

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

Functions statically reachable by fuzzers

686 / 942

Cyclomatic complexity statically reachable by fuzzers

2193 / 2829

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

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

/proc/self/cwd/pw_bluetooth_hci/uart_transport_fuzzer.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['pw::bluetooth_hci::CommandPacket::Decode(pw::span, cpp20::endian)', 'LLVMFuzzerTestOneInput', 'pw::bluetooth_hci::AsyncDataPacket::Decode(pw::span, cpp20::endian)', 'pw::bluetooth_hci::SyncDataPacket::Decode(pw::span, cpp20::endian)', 'pw::bluetooth_hci::EventPacket::Decode(pw::span)', 'pw::bluetooth_hci::CommandPacket::Decode(pw::span, cpp20::endian)', 'pw::bluetooth_hci::DecodeHciUartData(pw::span, fit::function_impl<8ul, true, void (pw::bluetooth_hci::Packet const&), std::__1::allocator > const&)', 'pw::bluetooth_hci::DecodeHciUartData(pw::span, fit::function_impl<8ul, true, void (pw::bluetooth_hci::Packet const&), std::__1::allocator > const&)', 'pw::bluetooth_hci::DecodeHciUartData(pw::span, fit::function_impl<8ul, true, void (pw::bluetooth_hci::Packet const&), std::__1::allocator > const&)']

/proc/self/cwd/pw_tokenizer/detokenize_fuzzer.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['pw::tokenizer::StringSegment::Decode(pw::span const&) const', 'pw::tokenizer::DetokenizedString::DetokenizedString(unsigned int, pw::span const, 18446744073709551615ul> const&, pw::span const&)', 'LLVMFuzzerTestOneInput', 'pw::tokenizer::Detokenizer::Detokenizer(pw::tokenizer::TokenDatabase const&)', 'pw::tokenizer::Detokenizer::Detokenize(pw::span const&) const', 'pw::tokenizer::Detokenizer::Detokenize(pw::span const&) const', 'pw::tokenizer::Detokenizer::Detokenize(pw::span const&) const', 'pw::tokenizer::Detokenizer::Detokenize(pw::span const&) const']

/proc/self/cwd/pw_protobuf/encoder_fuzzer.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['pw::protobuf::StreamEncoder::UpdateStatusForWrite(unsigned int, pw::protobuf::WireType, unsigned long)', 'pw::protobuf::fuzz::(anonymous namespace)::TestOneInput(FuzzedDataProvider&)', 'pw::protobuf::fuzz::(anonymous namespace)::RecursiveFuzzedEncode(FuzzedDataProvider&, pw::protobuf::StreamEncoder&, unsigned int)', 'pw::protobuf::StreamEncoder::UpdateStatusForWrite(unsigned int, pw::protobuf::WireType, unsigned long)', 'pw::protobuf::StreamEncoder::WriteVarintField(unsigned int, unsigned long)', 'pw::protobuf::fuzz::(anonymous namespace)::RecursiveFuzzedEncode(FuzzedDataProvider&, pw::protobuf::StreamEncoder&, unsigned int)', 'pw_varint_Encode64', 'pw::protobuf::StreamEncoder::WriteLengthDelimitedField(unsigned int, pw::span)', 'pw::protobuf::StreamEncoder::UpdateStatusForWrite(unsigned int, pw::protobuf::WireType, unsigned long)', 'pw::protobuf::fuzz::(anonymous namespace)::RecursiveFuzzedEncode(FuzzedDataProvider&, pw::protobuf::StreamEncoder&, unsigned int)']

/proc/self/cwd/pw_protobuf/decoder_fuzzer.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['pw::protobuf::StreamDecoder::Next()', 'pw::varint::Read(pw::stream::Reader&, unsigned long*, unsigned long)', 'pw::protobuf::StreamDecoder::Advance(unsigned long)', 'pw::varint::Read(pw::stream::Reader&, unsigned long*, unsigned long)', 'pw::protobuf::StreamDecoder::Next()', 'pw::protobuf::StreamDecoder::ReadVarintField(pw::span, pw::protobuf::internal::VarintType)', 'pw::protobuf::fuzz::(anonymous namespace)::TestOneInput(FuzzedDataProvider&)', 'pw::protobuf::fuzz::(anonymous namespace)::TestOneInput(FuzzedDataProvider&)', 'pw::protobuf::fuzz::(anonymous namespace)::TestOneInput(FuzzedDataProvider&)', 'pw::varint::Read(pw::stream::Reader&, unsigned long*, unsigned long)']

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

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
	[]	[]
/proc/self/cwd/pw_protobuf/public/pw_protobuf/wire_format.h	['encoder_fuzz_test', 'decoder_fuzz_test']	[]
/usr/local/bin/../include/c++/v1/stdexcept	[]	[]
/proc/self/cwd/pw_string/public/pw_string/internal/length.h	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_protobuf/stream_decoder.cc	['decoder_fuzz_test']	['decoder_fuzz_test']
/proc/self/cwd/pw_span/public/pw_span/internal/span_impl.h	['uart_transport_fuzzer', 'detokenize_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/usr/local/bin/../include/c++/v1/math.h	[]	[]
/proc/self/cwd/pw_string/public/pw_string/format.h	[]	[]
/proc/self/cwd/pw_bytes/byte_builder.cc	[]	[]
/proc/self/cwd/pw_tokenizer/public/pw_tokenizer/detokenize.h	['detokenize_fuzzer']	[]
/proc/self/cwd/pw_stream/public/pw_stream/stream.h	['encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_varint/varint_c.c	['detokenize_fuzzer', 'encoder_fuzz_test']	['encoder_fuzz_test']
/usr/local/bin/../include/c++/v1/stdlib.h	[]	[]
/proc/self/cwd/pw_sys_io_stdio/sys_io.cc	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_stream/public/pw_stream/null_stream.h	[]	[]
/proc/self/cwd/pw_string/type_to_string.cc	[]	[]
/proc/self/cwd/pw_protobuf/public/pw_protobuf/internal/codegen.h	[]	[]
/proc/self/cwd/pw_tokenizer/detokenize.cc	['detokenize_fuzzer']	['detokenize_fuzzer']
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/fit/include/lib/fit/internal/../nullable.h	['uart_transport_fuzzer']	[]
/proc/self/cwd/pw_status/public/pw_status/status.h	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_string/public/pw_string/to_string.h	[]	[]
/proc/self/cwd/pw_protobuf/public/pw_protobuf/stream_decoder.h	['decoder_fuzz_test']	[]
/proc/self/cwd/pw_string/public/pw_string/string.h	[]	[]
/proc/self/cwd/pw_varint/public/pw_varint/varint.h	['detokenize_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_tokenizer/detokenize_fuzzer.cc	['detokenize_fuzzer']	['detokenize_fuzzer']
/proc/self/cwd/pw_bytes/public/pw_bytes/endian.h	['uart_transport_fuzzer', 'detokenize_fuzzer', 'encoder_fuzz_test']	[]
/proc/self/cwd/pw_string/public/pw_string/internal/string_common_functions.inc	[]	[]
/proc/self/cwd/pw_stream/public/pw_stream/memory_stream.h	['encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/stdcompat/include/lib/stdcompat/bit.h	['encoder_fuzz_test']	[]
/proc/self/cwd/pw_tokenizer/public/pw_tokenizer/token_database.h	['detokenize_fuzzer']	[]
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/fit/include/lib/fit/internal/function.h	['uart_transport_fuzzer']	[]
/proc/self/cwd/pw_toolchain/public/pw_toolchain/internal/sibling_cast.h	[]	[]
/proc/self/cwd/pw_string/public/pw_string/string_builder.h	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_string/string_builder.cc	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_string/public/pw_string/type_to_string.h	[]	[]
/proc/self/cwd/pw_base64/public/pw_base64/base64.h	[]	[]
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/fit/include/lib/fit/function.h	['uart_transport_fuzzer']	[]
/proc/self/cwd/pw_assert/public/pw_assert/internal/check_impl.h	['encoder_fuzz_test', 'decoder_fuzz_test']	[]
/usr/local/bin/../include/c++/v1/optional	['uart_transport_fuzzer']	[]
/proc/self/cwd/pw_status/public/pw_status/try.h	['encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_tokenizer/base64.cc	[]	[]
/proc/self/cwd/pw_assert_basic/basic_handler.cc	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_string/public/pw_string/util.h	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_assert_basic/assert_basic.cc	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_bytes/public/pw_bytes/byte_builder.h	[]	[]
/proc/self/cwd/pw_varint/stream.cc	['decoder_fuzz_test']	['decoder_fuzz_test']
/proc/self/cwd/pw_tokenizer/decode.cc	['detokenize_fuzzer']	['detokenize_fuzzer']
/proc/self/cwd/pw_sys_io/sys_io.cc	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_protobuf/encoder_fuzzer.cc	['encoder_fuzz_test']	['encoder_fuzz_test']
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/stdcompat/include/lib/stdcompat/internal/bit.h	['encoder_fuzz_test']	[]
/proc/self/cwd/pw_tokenizer/public/pw_tokenizer/internal/decode.h	['detokenize_fuzzer']	[]
/proc/self/cwd/pw_result/public/pw_result/result.h	['encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_protobuf/public/pw_protobuf/serialized_size.h	['encoder_fuzz_test']	[]
/proc/self/cwd/pw_string/public/pw_string/internal/string_impl.h	[]	[]
/proc/self/cwd/pw_bluetooth_hci/packet.cc	['uart_transport_fuzzer']	['uart_transport_fuzzer']
/proc/self/cwd/pw_string/format.cc	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_protobuf/encoder.cc	['encoder_fuzz_test']	['encoder_fuzz_test']
/proc/self/cwd/pw_bluetooth_hci/public/pw_bluetooth_hci/packet.h	['uart_transport_fuzzer']	[]
/proc/self/cwd/pw_result/public/pw_result/internal/result_internal.h	['encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_tokenizer/public/pw_tokenizer/base64.h	[]	[]
/proc/self/cwd/pw_status/public/pw_status/status_with_size.h	['uart_transport_fuzzer', 'encoder_fuzz_test', 'decoder_fuzz_test']	[]
/proc/self/cwd/pw_protobuf/public/pw_protobuf/encoder.h	['encoder_fuzz_test']	[]
/proc/self/cwd/pw_containers/public/pw_containers/vector.h	[]	[]
/proc/self/cwd/pw_protobuf/decoder_fuzzer.cc	['decoder_fuzz_test']	['decoder_fuzz_test']
/proc/self/cwd/pw_stream/public/pw_stream/seek.h	[]	[]
/proc/self/cwd/pw_bluetooth_hci/uart_transport.cc	['uart_transport_fuzzer']	['uart_transport_fuzzer']
/proc/self/cwd/pw_base64/base64.cc	[]	[]
/proc/self/cwd/pw_stream/memory_stream.cc	[]	[]
/proc/self/cwd/pw_bluetooth_hci/uart_transport_fuzzer.cc	['uart_transport_fuzzer']	['uart_transport_fuzzer']
/proc/self/cwd/pw_bytes/public/pw_bytes/array.h	[]	[]
/usr/local/bin/../include/c++/v1/exception	[]	[]

Directories in report

Directory
/proc/self/cwd/pw_sys_io_stdio/
/proc/self/cwd/pw_toolchain/public/pw_toolchain/internal/
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/stdcompat/include/lib/stdcompat/internal/
/proc/self/cwd/pw_varint/public/pw_varint/
/proc/self/cwd/pw_sys_io/
/proc/self/cwd/pw_stream/public/pw_stream/
/proc/self/cwd/pw_assert_basic/
/proc/self/cwd/pw_protobuf/public/pw_protobuf/internal/
/proc/self/cwd/pw_assert/public/pw_assert/internal/
/proc/self/cwd/pw_base64/
/proc/self/cwd/pw_string/public/pw_string/internal/
/proc/self/cwd/pw_tokenizer/
/proc/self/cwd/pw_result/public/pw_result/
/proc/self/cwd/pw_varint/
/proc/self/cwd/pw_containers/public/pw_containers/
/usr/local/bin/../include/c++/v1/
/proc/self/cwd/pw_protobuf/
/proc/self/cwd/pw_bluetooth_hci/
/proc/self/cwd/pw_base64/public/pw_base64/
/proc/self/cwd/pw_bluetooth_hci/public/pw_bluetooth_hci/
/proc/self/cwd/pw_string/public/pw_string/
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/fit/include/lib/fit/internal/../
/proc/self/cwd/pw_bytes/public/pw_bytes/
/proc/self/cwd/pw_bytes/
/proc/self/cwd/pw_protobuf/public/pw_protobuf/
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/fit/include/lib/fit/
/proc/self/cwd/pw_tokenizer/public/pw_tokenizer/
/proc/self/cwd/pw_string/
/proc/self/cwd/pw_status/public/pw_status/
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/fit/include/lib/fit/internal/
/proc/self/cwd/third_party/fuchsia/repo/sdk/lib/stdcompat/include/lib/stdcompat/
/proc/self/cwd/pw_span/public/pw_span/internal/
/proc/self/cwd/pw_tokenizer/public/pw_tokenizer/internal/
/proc/self/cwd/pw_result/public/pw_result/internal/
/proc/self/cwd/pw_stream/