High level conclusions

Fuzzers reach 78.56% of cyclomatic complexity.

Fuzzers reach 63.92% of all functions.

Fuzzer oscore_decrypt_fuzzer is blocked:

The runtime code coverage of oscore_decrypt_fuzzer covers 23.56% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer network_message_fuzzer is blocked:

The runtime code coverage of network_message_fuzzer covers 26.66% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer observe_fuzzer is blocked:

The runtime code coverage of observe_fuzzer covers 19.49% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer async_fuzzer is blocked:

The runtime code coverage of async_fuzzer covers 21.27% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer block_check_fuzzer is blocked:

The runtime code coverage of block_check_fuzzer covers 22.81% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer block_fuzzer is blocked:

The runtime code coverage of block_fuzzer covers 19.79% 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

606 / 948

Cyclomatic complexity statically reachable by fuzzers

7014 / 8928

Runtime code coverage of functions

410 / 948

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	Runtime reached by Fuzzers	Combined 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: split_uri_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	22	36.6%
gold	[1:9]	13	21.6%
yellow	[10:29]	2	3.33%
greenyellow	[30:49]	2	3.33%
lawngreen	50+	21	35.0%
All colors	60	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
4	28	coap_dtls_is_supported	call site: 00028	coap_log_impl
4	40	coap_tls_is_supported	call site: 00040	coap_log_impl
4	50	coap_wss_is_supported	call site: 00050	coap_log_impl
2	25	coap_dtls_is_supported	call site: 00025	coap_log_impl
2	33	coap_split_uri_sub	call site: 00033	coap_log_impl
2	37	coap_tls_is_supported	call site: 00037	coap_log_impl
2	46	coap_ws_is_supported	call site: 00046	coap_log_impl
1	6	coap_split_uri_sub	call site: 00006	vsnprintf
1	17	coap_log_impl	call site: 00017	snprintf

Runtime coverage analysis

Covered functions

15

Functions that are reachable but not covered

12

Reachable functions

27

Percentage of reachable functions covered

55.56%

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
tests/oss-fuzz/split_uri_target.c	1
src/coap_uri.c	2
src/coap_debug.c	4
src/coap_time.c	3
src/coap_openssl.c	2
src/coap_strm_posix.c	1
src/coap_ws.c	2

Fuzzer: oscore_conf_parse_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	23	21.2%
gold	[1:9]	5	4.62%
yellow	[10:29]	9	8.33%
greenyellow	[30:49]	1	0.92%
lawngreen	50+	70	64.8%
All colors	108	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
16	32	coap_new_string	call site: 00032	coap_log_impl
2	16	coap_cleanup	call site: 00016	ENGINE_finish
2	87	coap_parse_oscore_conf_mem	call site: 00087	coap_log_impl
1	11	coap_dtls_startup	call site: 00011	OPENSSL_init_crypto
1	14	LLVMFuzzerTestOneInput	call site: 00014	coap_cleanup
1	76	coap_parse_oscore_conf_mem	call site: 00076	__assert_fail

Runtime coverage analysis

Covered functions

36

Functions that are reachable but not covered

22

Reachable functions

57

Percentage of reachable functions covered

61.4%

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
tests/oss-fuzz/oscore_conf_parse_target.c	1
src/coap_net.c	2
src/coap_time.c	4
src/coap_prng.c	2
src/coap_mem.c	4
src/coap_openssl.c	3
src/coap_debug.c	6
src/coap_oscore.c	6
src/coap_str.c	6
src/oscore/oscore_cose.c	4
src/oscore/oscore.c	1

Fuzzer: pdu_parse_udp_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	82	20.0%
gold	[1:9]	14	3.42%
yellow	[10:29]	13	3.17%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	300	73.3%
All colors	409	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
19	374	coap_pdu_encode_header	call site: 00374	coap_log_impl
8	228	coap_show_pdu	call site: 00228	coap_log_impl
7	333	coap_show_pdu	call site: 00333	coap_log_impl
4	56	coap_pdu_parse_header	call site: 00056	coap_log_impl
4	94	coap_pdu_parse_opt	call site: 00094	coap_log_impl
4	143	coap_get_query	call site: 00143	coap_log_impl
4	179	coap_dtls_is_supported	call site: 00179	coap_log_impl
4	199	coap_wss_is_supported	call site: 00199	coap_log_impl
3	31	coap_pdu_parse2	call site: 00031	coap_log_impl
2	50	coap_realloc_type	call site: 00050	coap_log_impl
2	151	coap_new_string	call site: 00151	coap_log_impl
2	170	coap_split_uri_sub	call site: 00170	coap_log_impl

Runtime coverage analysis

Covered functions

78

Functions that are reachable but not covered

17

Reachable functions

94

Percentage of reachable functions covered

81.91%

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
tests/oss-fuzz/pdu_parse_udp_target.c	1
src/coap_net.c	2
src/coap_time.c	4
src/coap_prng.c	2
src/coap_mem.c	4
src/coap_openssl.c	5
src/coap_pdu.c	18
src/coap_debug.c	13
src/coap_option.c	12
src/coap_encode.c	3
src/coap_uri.c	6
src/coap_str.c	3
src/coap_strm_posix.c	1
src/coap_ws.c	2
src/coap_block.c	1

Fuzzer: pdu_parse_tcp_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	80	19.5%
gold	[1:9]	13	3.17%
yellow	[10:29]	10	2.44%
greenyellow	[30:49]	2	0.48%
lawngreen	50+	304	74.3%
All colors	409	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
8	228	coap_show_pdu	call site: 00228	coap_log_impl
7	333	coap_show_pdu	call site: 00333	coap_log_impl
5	371	LLVMFuzzerTestOneInput	call site: 00371	coap_log_impl
4	94	coap_pdu_parse_opt	call site: 00094	coap_log_impl
4	143	coap_get_query	call site: 00143	coap_log_impl
4	179	coap_dtls_is_supported	call site: 00179	coap_log_impl
4	199	coap_wss_is_supported	call site: 00199	coap_log_impl
4	389	coap_pdu_encode_header	call site: 00389	coap_log_impl
3	31	coap_pdu_parse2	call site: 00031	coap_log_impl
3	53	coap_pdu_parse2	call site: 00053	coap_log_impl
3	57	coap_pdu_parse_header	call site: 00057	coap_log_impl
2	50	coap_realloc_type	call site: 00050	coap_log_impl

Runtime coverage analysis

Covered functions

78

Functions that are reachable but not covered

17

Reachable functions

94

Percentage of reachable functions covered

81.91%

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
tests/oss-fuzz/pdu_parse_tcp_target.c	1
src/coap_net.c	2
src/coap_time.c	4
src/coap_prng.c	2
src/coap_mem.c	4
src/coap_openssl.c	5
src/coap_pdu.c	18
src/coap_debug.c	13
src/coap_option.c	12
src/coap_encode.c	3
src/coap_uri.c	6
src/coap_str.c	3
src/coap_strm_posix.c	1
src/coap_ws.c	2
src/coap_block.c	1

Fuzzer: pdu_parse_ws_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	83	20.2%
gold	[1:9]	13	3.17%
yellow	[10:29]	12	2.93%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	301	73.5%
All colors	409	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
13	380	coap_pdu_encode_header	call site: 00380	coap_log_impl
8	228	coap_show_pdu	call site: 00228	coap_log_impl
7	333	coap_show_pdu	call site: 00333	coap_log_impl
5	371	LLVMFuzzerTestOneInput	call site: 00371	coap_log_impl
4	53	coap_pdu_parse2	call site: 00053	coap_log_impl
4	94	coap_pdu_parse_opt	call site: 00094	coap_log_impl
4	143	coap_get_query	call site: 00143	coap_log_impl
4	179	coap_dtls_is_supported	call site: 00179	coap_log_impl
4	199	coap_wss_is_supported	call site: 00199	coap_log_impl
3	31	coap_pdu_parse2	call site: 00031	coap_log_impl
2	50	coap_realloc_type	call site: 00050	coap_log_impl
2	58	coap_pdu_parse_header	call site: 00058	coap_log_impl

Runtime coverage analysis

Covered functions

78

Functions that are reachable but not covered

17

Reachable functions

94

Percentage of reachable functions covered

81.91%

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
tests/oss-fuzz/pdu_parse_ws_target.c	1
src/coap_net.c	2
src/coap_time.c	4
src/coap_prng.c	2
src/coap_mem.c	4
src/coap_openssl.c	5
src/coap_pdu.c	18
src/coap_debug.c	13
src/coap_option.c	12
src/coap_encode.c	3
src/coap_uri.c	6
src/coap_str.c	3
src/coap_strm_posix.c	1
src/coap_ws.c	2
src/coap_block.c	1

Fuzzer: block_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	4231	90.4%
gold	[1:9]	106	2.26%
yellow	[10:29]	31	0.66%
greenyellow	[30:49]	42	0.89%
lawngreen	50+	268	5.72%
All colors	4678	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
668	2128	coap_make_str_const	call site: 02128	coap_session_release_lkd
297	3608	coap_dispatch	call site: 03608	coap_oscore_decrypt_pdu
296	1706	coap_session_connected	call site: 01706	coap_handle_event_lkd
261	3988	coap_dispatch	call site: 03988	coap_send_ack_lkd
254	4318	coap_handle_dgram	call site: 04318	coap_handle_event_lkd
248	3240	coap_session_free	call site: 03240	coap_dtls_handle_timeout
240	992	coap_pdu_encode_header	call site: 00992	coap_proxy_forward_request_lkd
236	2857	handle_request	call site: 02857	coap_session_max_pdu_size_lkd
215	1291	coap_send_internal	call site: 01291	coap_oscore_new_pdu_encrypted_lkd
149	682	coap_show_pdu	call site: 00682	coap_session_release_lkd
83	598	coap_pdu_resize	call site: 00598	coap_show_pdu
75	3156	coap_new_error_response	call site: 03156	coap_resource_release_lkd

Runtime coverage analysis

Covered functions

158

Functions that are reachable but not covered

612

Reachable functions

763

Percentage of reachable functions covered

19.79%

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
tests/oss-fuzz/block_target.c	2
src/coap_net.c	59
src/coap_time.c	5
src/coap_prng.c	2
src/coap_mem.c	5
src/coap_openssl.c	65
src/coap_debug.c	17
src/coap_io.c	10
src/coap_session.c	53
src/coap_address.c	14
src/coap_netif.c	11
src/coap_strm_posix.c	6
src/coap_ws.c	2
src/coap_dgrm_posix.c	4
src/coap_io_posix.c	4
src/coap_proxy.c	22
src/coap_uri.c	15
src/coap_option.c	21
src/coap_encode.c	6
src/coap_str.c	10
src/coap_pdu.c	34
src/coap_cache.c	5
src/coap_block.c	56
src/coap_resource.c	23
./include/coap3/coap_pdu_internal.h	1
./include/coap3/coap_resource_internal.h	1
src/coap_oscore.c	14
./include/coap3/coap_uri.h	1
src/oscore/oscore_cose.c	19
src/oscore/oscore_context.c	21
src/oscore/oscore.c	8
src/oscore/oscore_cbor.c	11
src/oscore/oscore_crypto.c	4
/usr/include/openssl/ssl.h	3
src/coap_dtls.c	4
/usr/include/openssl/x509v3.h	3
src/coap_async.c	4
src/coap_subscribe.c	3

Fuzzer: block_check_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	4237	89.0%
gold	[1:9]	34	0.71%
yellow	[10:29]	374	7.86%
greenyellow	[30:49]	22	0.46%
lawngreen	50+	90	1.89%
All colors	4757	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
1182	3365	coap_io_do_epoll_lkd	call site: 03365	coap_read_endpoint
628	2129	coap_make_str_const	call site: 02129	coap_session_release_lkd
278	1238	coap_add_data_after	call site: 01238	coap_oscore_new_pdu_encrypted_lkd
175	968	coap_socket_connect_udp	call site: 00968	coap_session_reestablished
158	2853	coap_get_resource_from_uri_path_lkd	call site: 02853	coap_session_max_pdu_size_lkd
152	3012	coap_add_block_b_data	call site: 03012	coap_send_internal
149	683	coap_show_pdu	call site: 00683	coap_session_release_lkd
110	1893	coap_add_block	call site: 01893	coap_send_internal
65	112	coap_dtls_new_context	call site: 00112	coap_session_str
60	1632	coap_add_option	call site: 01632	coap_send_internal
60	3241	coap_session_free	call site: 03241	coap_dtls_handle_timeout
58	3165	coap_io_prepare_io_lkd	call site: 03165	coap_retransmit

Runtime coverage analysis

Covered functions

178

Functions that are reachable but not covered

592

Reachable functions

767

Percentage of reachable functions covered

22.82%

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
tests/oss-fuzz/block_check_target.c	1
src/coap_net.c	59
src/coap_time.c	5
src/coap_prng.c	2
src/coap_mem.c	5
src/coap_openssl.c	65
src/coap_debug.c	17
src/coap_io.c	10
src/coap_session.c	55
src/coap_address.c	14
src/coap_netif.c	11
src/coap_strm_posix.c	6
src/coap_ws.c	2
src/coap_dgrm_posix.c	4
src/coap_io_posix.c	5
src/coap_proxy.c	22
src/coap_uri.c	15
src/coap_option.c	21
src/coap_encode.c	6
src/coap_str.c	10
src/coap_pdu.c	35
src/coap_cache.c	5
src/coap_block.c	58
src/coap_resource.c	22
./include/coap3/coap_pdu_internal.h	1
./include/coap3/coap_resource_internal.h	1
src/coap_oscore.c	14
./include/coap3/coap_uri.h	1
src/oscore/oscore_cose.c	19
src/oscore/oscore_context.c	21
src/oscore/oscore.c	8
src/oscore/oscore_cbor.c	11
src/oscore/oscore_crypto.c	4
/usr/include/openssl/ssl.h	3
src/coap_dtls.c	4
/usr/include/openssl/x509v3.h	3
src/coap_async.c	4
src/coap_subscribe.c	3

Fuzzer: async_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	4247	89.8%
gold	[1:9]	129	2.72%
yellow	[10:29]	264	5.58%
greenyellow	[30:49]	36	0.76%
lawngreen	50+	52	1.09%
All colors	4728	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
668	2128	coap_make_str_const	call site: 02128	coap_session_release_lkd
334	3608	coap_dispatch	call site: 03608	coap_oscore_decrypt_pdu
325	3987	coap_dispatch	call site: 03987	handle_response
254	4318	coap_handle_dgram	call site: 04318	coap_handle_event_lkd
248	3240	coap_session_free	call site: 03240	coap_dtls_handle_timeout
240	992	coap_pdu_encode_header	call site: 00992	coap_proxy_forward_request_lkd
236	2857	handle_request	call site: 02857	coap_session_max_pdu_size_lkd
215	1291	coap_send_internal	call site: 01291	coap_oscore_new_pdu_encrypted_lkd
158	1706	coap_session_connected	call site: 01706	coap_handle_event_lkd
149	682	coap_show_pdu	call site: 00682	coap_session_release_lkd
135	1867	coap_pdu_duplicate_lkd	call site: 01867	coap_send_internal
69	255	coap_dtls_free_context	call site: 00255	coap_new_endpoint_lkd

Runtime coverage analysis

Covered functions

171

Functions that are reachable but not covered

607

Reachable functions

771

Percentage of reachable functions covered

21.27%

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
tests/oss-fuzz/async_target.c	2
src/coap_net.c	59
src/coap_time.c	5
src/coap_prng.c	2
src/coap_mem.c	5
src/coap_openssl.c	65
src/coap_debug.c	17
src/coap_io.c	10
src/coap_session.c	54
src/coap_address.c	14
src/coap_netif.c	11
src/coap_strm_posix.c	6
src/coap_ws.c	2
src/coap_dgrm_posix.c	4
src/coap_io_posix.c	4
src/coap_proxy.c	22
src/coap_uri.c	15
src/coap_option.c	21
src/coap_encode.c	6
src/coap_str.c	10
src/coap_pdu.c	35
src/coap_cache.c	5
src/coap_block.c	51
src/coap_resource.c	23
./include/coap3/coap_pdu_internal.h	1
./include/coap3/coap_resource_internal.h	1
src/coap_oscore.c	14
./include/coap3/coap_uri.h	1
src/oscore/oscore_cose.c	19
src/oscore/oscore_context.c	21
src/oscore/oscore.c	8
src/oscore/oscore_cbor.c	11
src/oscore/oscore_crypto.c	4
/usr/include/openssl/ssl.h	3
src/coap_dtls.c	4
/usr/include/openssl/x509v3.h	3
src/coap_async.c	15
src/coap_subscribe.c	3

Fuzzer: observe_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	4277	91.5%
gold	[1:9]	3	0.06%
yellow	[10:29]	225	4.81%
greenyellow	[30:49]	1	0.02%
lawngreen	50+	165	3.53%
All colors	4671	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
1332	3240	coap_session_free	call site: 03240	coap_dtls_handle_timeout
500	2128	coap_make_str_const	call site: 02128	coap_session_release_lkd
298	992	coap_pdu_encode_header	call site: 00992	coap_proxy_forward_request_lkd
215	1291	coap_send_internal	call site: 01291	coap_oscore_new_pdu_encrypted_lkd
174	2852	coap_get_resource_from_uri_path_lkd	call site: 02852	coap_session_max_pdu_size_lkd
162	3069	coap_touch_observer	call site: 03069	coap_delete_observer_request
158	1706	coap_session_connected	call site: 01706	coap_handle_event_lkd
147	2641	coap_cache_derive_key_w_ignore	call site: 02641	coap_cancel_observe_lkd
136	682	coap_show_pdu	call site: 00682	coap_option_next
135	1867	coap_pdu_duplicate_lkd	call site: 01867	coap_send_internal
69	255	coap_dtls_free_context	call site: 00255	coap_new_endpoint_lkd
65	111	coap_dtls_new_context	call site: 00111	coap_session_str

Runtime coverage analysis

Covered functions

155

Functions that are reachable but not covered

611

Reachable functions

759

Percentage of reachable functions covered

19.5%

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
tests/oss-fuzz/observe_target.c	2
src/coap_net.c	59
src/coap_time.c	5
src/coap_prng.c	2
src/coap_mem.c	5
src/coap_openssl.c	65
src/coap_debug.c	17
src/coap_io.c	10
src/coap_session.c	52
src/coap_address.c	14
src/coap_netif.c	11
src/coap_strm_posix.c	6
src/coap_ws.c	2
src/coap_dgrm_posix.c	4
src/coap_io_posix.c	4
src/coap_proxy.c	22
src/coap_uri.c	15
src/coap_option.c	21
src/coap_encode.c	6
src/coap_str.c	10
src/coap_pdu.c	35
src/coap_cache.c	5
src/coap_block.c	51
src/coap_resource.c	24
./include/coap3/coap_pdu_internal.h	1
./include/coap3/coap_resource_internal.h	1
src/coap_oscore.c	14
./include/coap3/coap_uri.h	1
src/oscore/oscore_cose.c	19
src/oscore/oscore_context.c	21
src/oscore/oscore.c	8
src/oscore/oscore_cbor.c	11
src/oscore/oscore_crypto.c	4
/usr/include/openssl/ssl.h	3
src/coap_dtls.c	4
/usr/include/openssl/x509v3.h	3
src/coap_async.c	4
src/coap_subscribe.c	3

Fuzzer: network_message_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	4006	84.7%
gold	[1:9]	28	0.59%
yellow	[10:29]	75	1.58%
greenyellow	[30:49]	25	0.52%
lawngreen	50+	595	12.5%
All colors	4729	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
502	2309	setup_pki_ssl	call site: 02309	coap_session_release_lkd
297	3609	coap_dispatch	call site: 03609	coap_oscore_decrypt_pdu
296	1707	coap_session_connected	call site: 01707	coap_handle_event_lkd
261	3989	coap_dispatch	call site: 03989	coap_send_ack_lkd
248	3241	coap_session_free	call site: 03241	coap_dtls_handle_timeout
236	2858	handle_request	call site: 02858	coap_session_max_pdu_size_lkd
202	2102	coap_session_check_connect	call site: 02102	coap_session_release_lkd
197	1000	coap_pdu_encode_header	call site: 01000	coap_proxy_forward_request_lkd
184	1296	coap_send_internal	call site: 01296	coap_oscore_new_pdu_encrypted_lkd
163	684	coap_show_pdu	call site: 00684	coap_session_release_lkd
137	4425	coap_epoll_ctl_mod	call site: 04425	coap_accept_endpoint
75	3157	coap_new_error_response	call site: 03157	coap_resource_release_lkd

Runtime coverage analysis

Covered functions

221

Functions that are reachable but not covered

572

Reachable functions

780

Percentage of reachable functions covered

26.67%

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
tests/oss-fuzz/network_message_target.c	7
src/coap_net.c	74
src/coap_time.c	5
src/coap_prng.c	2
src/coap_mem.c	5
src/coap_openssl.c	67
src/coap_debug.c	17
src/coap_address.c	14
src/coap_io.c	10
src/coap_session.c	54
src/coap_netif.c	11
src/coap_strm_posix.c	6
src/coap_ws.c	2
src/coap_dgrm_posix.c	4
src/coap_io_posix.c	4
src/coap_proxy.c	22
src/coap_uri.c	15
src/coap_option.c	21
src/coap_encode.c	6
src/coap_str.c	10
src/coap_pdu.c	35
src/coap_cache.c	5
src/coap_block.c	51
src/coap_resource.c	19
./include/coap3/coap_pdu_internal.h	1
./include/coap3/coap_resource_internal.h	1
src/coap_oscore.c	14
./include/coap3/coap_uri.h	1
src/oscore/oscore_cose.c	19
src/oscore/oscore_context.c	21
src/oscore/oscore.c	8
src/oscore/oscore_cbor.c	11
src/oscore/oscore_crypto.c	4
/usr/include/openssl/ssl.h	3
src/coap_dtls.c	4
/usr/include/openssl/x509v3.h	3
src/coap_async.c	4
src/coap_subscribe.c	3

Fuzzer: get_asn1_tag_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	17	54.8%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	14	45.1%
All colors	31	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
17	8	coap_new_string	call site: 00008	coap_log_impl

Runtime coverage analysis

Covered functions

9

Functions that are reachable but not covered

15

Reachable functions

24

Percentage of reachable functions covered

37.5%

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
tests/oss-fuzz/get_asn1_tag_target.c	1
src/coap_asn1.c	3
src/coap_str.c	3
src/coap_mem.c	2
src/coap_debug.c	4
src/coap_time.c	3

Fuzzer: oscore_decrypt_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	4212	89.5%
gold	[1:9]	135	2.87%
yellow	[10:29]	48	1.02%
greenyellow	[30:49]	244	5.19%
lawngreen	50+	62	1.31%
All colors	4701	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
998	2280	oscore_free_context	call site: 02280	coap_session_release_lkd
676	3942	coap_oscore_decrypt_pdu	call site: 03942	coap_delete_node_lkd
375	3287	coap_session_free	call site: 03287	coap_dtls_handle_timeout
252	1763	coap_session_connected	call site: 01763	coap_handle_event_lkd
238	1052	coap_pdu_encode_header	call site: 01052	coap_proxy_forward_request_lkd
214	742	coap_show_pdu	call site: 00742	coap_session_release_lkd
87	3853	coap_oscore_decrypt_pdu	call site: 03853	coap_handle_event_lkd
69	321	coap_dtls_free_context	call site: 00321	coap_new_endpoint_lkd
65	177	coap_dtls_new_context	call site: 00177	coap_session_str
62	502	coap_option_filter_get	call site: 00502	coap_split_proxy_uri
53	585	coap_session_free	call site: 00585	coap_delete_proxy_subscriber
53	1295	coap_add_data_after	call site: 01295	coap_rebuild_pdu_for_proxy

Runtime coverage analysis

Covered functions

187

Functions that are reachable but not covered

584

Reachable functions

764

Percentage of reachable functions covered

23.56%

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
tests/oss-fuzz/oscore_decrypt_target.c	1
src/coap_net.c	59
src/coap_time.c	5
src/coap_prng.c	2
src/coap_mem.c	5
src/coap_openssl.c	65
src/coap_debug.c	17
src/coap_oscore.c	21
src/coap_str.c	10
src/coap_io.c	10
src/coap_session.c	54
src/coap_address.c	14
src/coap_netif.c	11
src/coap_strm_posix.c	6
src/coap_ws.c	2
src/coap_dgrm_posix.c	4
src/coap_io_posix.c	4
src/coap_proxy.c	22
src/coap_uri.c	15
src/coap_option.c	21
src/coap_encode.c	6
src/coap_pdu.c	35
src/coap_cache.c	5
src/coap_block.c	51
src/coap_resource.c	19
./include/coap3/coap_pdu_internal.h	1
./include/coap3/coap_resource_internal.h	1
./include/coap3/coap_uri.h	1
src/oscore/oscore_cose.c	19
src/oscore/oscore_context.c	21
src/oscore/oscore.c	8
src/oscore/oscore_cbor.c	11
src/oscore/oscore_crypto.c	4
/usr/include/openssl/ssl.h	3
src/coap_dtls.c	4
/usr/include/openssl/x509v3.h	3
src/coap_async.c	4
src/coap_subscribe.c	3

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
coap_ws_close	/src/libcoap/src/coap_ws.c	1	['N/A']	38	0	378	50	17	669	2	6812	218
coap_persist_startup	/src/libcoap/src/coap_subscribe.c	5	['N/A', 'N/A', 'N/A', 'N/A', 'int']	79	0	30	3	2	670	0	6772	176
hnd_get_wellknown_lkd	/src/libcoap/src/coap_net.c	5	['N/A', 'N/A', 'N/A', 'N/A', 'N/A']	64	0	304	50	16	657	0	6701	107
coap_netif_dgrm_write	/src/libcoap/src/coap_netif.c	3	['N/A', 'N/A', 'size_t']	8	0	155	30	9	61	0	311	70
coap_tls_engine_configure	/src/libcoap/src/coap_openssl.c	1	['N/A']	6	0	575	124	34	32	0	121	54
coap_op_resource_deleted	/src/libcoap/src/coap_subscribe.c	3	['N/A', 'N/A', 'N/A']	6	0	252	40	16	37	0	129	40
coap_join_mcast_group_intf	/src/libcoap/src/coap_net.c	3	['N/A', 'N/A', 'N/A']	6	0	24	3	2	37	0	126	38
coap_session_set_type_server	/src/libcoap/src/coap_session.c	1	['N/A']	73	0	18	3	2	653	0	6630	36
coap_split_path	/src/libcoap/src/coap_uri.c	4	['N/A', 'size_t', 'N/A', 'N/A']	7	0	53	3	2	28	0	132	35

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

Functions statically reachable by fuzzers

661 / 948

Cyclomatic complexity statically reachable by fuzzers

7758 / 8928

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	Runtime reached by Fuzzers	Combined 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.

tests/oss-fuzz/split_uri_target.c

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=['coap_dtls_is_supported', 'coap_tls_is_supported', 'coap_wss_is_supported', 'coap_split_uri_sub', 'coap_ws_is_supported', 'coap_log_impl']

tests/oss-fuzz/oscore_conf_parse_target.c

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=['coap_new_string', 'coap_cleanup', 'coap_parse_oscore_conf_mem', 'coap_dtls_startup', 'LLVMFuzzerTestOneInput']

tests/oss-fuzz/pdu_parse_udp_target.c

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=['coap_pdu_encode_header', 'coap_show_pdu', 'coap_pdu_parse_header', 'coap_pdu_parse_opt', 'coap_get_query', 'coap_dtls_is_supported', 'coap_wss_is_supported', 'coap_pdu_parse2', 'coap_realloc_type']

tests/oss-fuzz/pdu_parse_tcp_target.c

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=['coap_show_pdu', 'LLVMFuzzerTestOneInput', 'coap_pdu_parse_opt', 'coap_get_query', 'coap_dtls_is_supported', 'coap_wss_is_supported', 'coap_pdu_encode_header', 'coap_pdu_parse2']

tests/oss-fuzz/pdu_parse_ws_target.c

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=['coap_pdu_encode_header', 'coap_show_pdu', 'LLVMFuzzerTestOneInput', 'coap_pdu_parse2', 'coap_pdu_parse_opt', 'coap_get_query', 'coap_dtls_is_supported', 'coap_wss_is_supported']

tests/oss-fuzz/block_target.c

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=['coap_make_str_const', 'coap_dispatch', 'coap_session_connected', 'coap_handle_dgram', 'coap_session_free', 'coap_pdu_encode_header', 'handle_request', 'coap_send_internal', 'coap_show_pdu']

tests/oss-fuzz/block_check_target.c

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=['coap_io_do_epoll_lkd', 'coap_make_str_const', 'coap_add_data_after', 'coap_socket_connect_udp', 'coap_get_resource_from_uri_path_lkd', 'coap_add_block_b_data', 'coap_show_pdu', 'coap_add_block', 'coap_dtls_new_context', 'coap_add_option']

tests/oss-fuzz/async_target.c

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=['coap_make_str_const', 'coap_dispatch', 'coap_handle_dgram', 'coap_session_free', 'coap_pdu_encode_header', 'handle_request', 'coap_send_internal', 'coap_session_connected', 'coap_show_pdu']

tests/oss-fuzz/observe_target.c

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=['coap_session_free', 'coap_make_str_const', 'coap_pdu_encode_header', 'coap_send_internal', 'coap_get_resource_from_uri_path_lkd', 'coap_touch_observer', 'coap_session_connected', 'coap_cache_derive_key_w_ignore', 'coap_show_pdu', 'coap_pdu_duplicate_lkd']

tests/oss-fuzz/network_message_target.c

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=['setup_pki_ssl', 'coap_dispatch', 'coap_session_connected', 'coap_session_free', 'handle_request', 'coap_session_check_connect', 'coap_pdu_encode_header', 'coap_send_internal', 'coap_show_pdu']

tests/oss-fuzz/get_asn1_tag_target.c

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=['coap_new_string']

tests/oss-fuzz/oscore_decrypt_target.c

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=['oscore_free_context', 'coap_oscore_decrypt_pdu', 'coap_session_free', 'coap_session_connected', 'coap_pdu_encode_header', 'coap_show_pdu', 'coap_dtls_free_context', 'coap_dtls_new_context', 'coap_option_filter_get']

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
coap_debug_set_packet_loss	39	13	33.33%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_debug_send_packet	42	22	52.38%	['async_fuzzer', 'network_message_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_debug_set_packet_fail	39	13	33.33%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_socket_connect_udp	134	49	36.56%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_socket_send	113	16	14.15%	['async_fuzzer', 'network_message_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_test_cid_tuple_change	31	4	12.90%	['async_fuzzer', 'network_message_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_new_context	69	37	53.62%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_send_internal	129	60	46.51%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_remove_from_queue	36	6	16.66%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_cancel_session_messages	32	5	15.62%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_call_response_handler	43	18	41.86%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_dispatch	381	160	41.99%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_handle_event_lkd	71	6	8.450%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_remove_from_queue_token	45	4	8.888%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
handle_request	506	161	31.81%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
no_response	61	30	49.18%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
handle_response	75	18	24.0%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_remove_option	78	11	14.10%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_add_resource_lkd	38	16	42.10%	['async_fuzzer', 'observe_fuzzer', 'block_check_fuzzer', 'block_fuzzer']
coap_session_connected	60	11	18.33%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_session_create_client	108	59	54.62%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_add_data_blocked_response	101	51	50.49%	['block_check_fuzzer']
coap_cancel_observe_lkd	71	13	18.30%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_add_data_large_response_lkd	86	37	43.02%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_block_check_lg_crcv_timeouts	55	19	34.54%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_block_check_lg_srcv_timeouts	137	19	13.86%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_block_check_q_block1_xmit	47	14	29.78%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_block_check_q_block2_xmit	48	9	18.75%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
setup_block_b	35	18	51.42%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_socket_bind_udp	71	29	40.84%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_io_prepare_io_lkd	313	76	24.28%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_client_delay_first	47	5	10.63%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_io_do_epoll_lkd	69	10	14.49%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_opt_setheader	47	20	42.55%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_new_endpoint_lkd	97	34	35.05%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_register_async_lkd	45	23	51.11%	['async_fuzzer']
coap_add_observer	143	42	29.37%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_delete_observer_internal	40	16	40.0%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_print_addr	33	15	45.45%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_print_ip_addr	38	15	39.47%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_dtls_map_key_type_to_define	101	14	13.86%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
prepend_508_ip	90	35	38.88%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
handle_signaling	68	30	44.11%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_dtls_send	41	18	43.90%	['network_message_fuzzer']
coap_dtls_info_callback	62	22	35.48%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_dgram_ctrl	61	31	50.81%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
setup_pki_ssl	310	13	4.193%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_delete_proxy_subscriber	39	5	12.82%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_session_delay_pdu	37	17	45.94%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_socket_connect_tcp1	92	37	40.21%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
coap_socket_write	39	20	51.28%	['network_message_fuzzer']
coap_oscore_decrypt_pdu	644	179	27.79%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
oscore_cbor_put_unsigned	47	10	21.27%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']
oscore_log_context	39	4	10.25%	['async_fuzzer', 'network_message_fuzzer', 'block_check_fuzzer', 'observe_fuzzer', 'oscore_decrypt_fuzzer', 'block_fuzzer']

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/libcoap/src/coap_oscore.c	['oscore_conf_parse_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['oscore_conf_parse_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_encode.c	['pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/oscore/oscore_cose.c	['oscore_conf_parse_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['oscore_conf_parse_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_mem.c	['oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'get_asn1_tag_fuzzer', 'oscore_decrypt_fuzzer']	['oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'get_asn1_tag_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_pdu.c	['pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/oscore/oscore_crypto.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['oscore_decrypt_fuzzer']
/src/libcoap/./include/coap3/coap_address.h	[]	[]
/src/libcoap/src/coap_io_posix.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/tests/oss-fuzz/pdu_parse_tcp_target.c	['pdu_parse_tcp_fuzzer']	['pdu_parse_tcp_fuzzer']
/src/libcoap/./include/coap3/coap_resource_internal.h	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	[]
/src/libcoap/tests/oss-fuzz/observe_target.c	['observe_fuzzer']	['observe_fuzzer']
/src/libcoap/./include/coap3/coap_uri.h	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	[]
/src/libcoap/src/coap_address.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/tests/oss-fuzz/get_asn1_tag_target.c	['get_asn1_tag_fuzzer']	['get_asn1_tag_fuzzer']
/src/libcoap/tests/oss-fuzz/pdu_parse_ws_target.c	['pdu_parse_ws_fuzzer']	['pdu_parse_ws_fuzzer']
/src/libcoap/src/oscore/oscore.c	['oscore_conf_parse_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['oscore_conf_parse_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_ws.c	['split_uri_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['split_uri_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer']
/src/libcoap/src/coap_block.c	['pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer']
/usr/include/openssl/x509v3.h	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	[]
/src/libcoap/src/coap_cache.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_check_fuzzer', 'observe_fuzzer']
/src/libcoap/src/coap_dgrm_posix.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/oscore/oscore_cbor.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['oscore_decrypt_fuzzer']
/src/libcoap/src/coap_asn1.c	['get_asn1_tag_fuzzer']	['get_asn1_tag_fuzzer']
/src/libcoap/src/coap_async.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_str.c	['oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'get_asn1_tag_fuzzer', 'oscore_decrypt_fuzzer']	['oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'get_asn1_tag_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_subscribe.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_dtls.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['network_message_fuzzer']
/src/libcoap/src/coap_resource.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_io.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'network_message_fuzzer']
/src/libcoap/src/coap_time.c	['split_uri_fuzzer', 'oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'get_asn1_tag_fuzzer', 'oscore_decrypt_fuzzer']	['split_uri_fuzzer', 'oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_option.c	['pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/tests/oss-fuzz/pdu_parse_udp_target.c	['pdu_parse_udp_fuzzer']	['pdu_parse_udp_fuzzer']
/src/libcoap/tests/oss-fuzz/split_uri_target.c	['split_uri_fuzzer']	['split_uri_fuzzer']
/src/libcoap/tests/oss-fuzz/block_check_target.c	['block_check_fuzzer']	['block_check_fuzzer']
/src/libcoap/tests/oss-fuzz/async_target.c	['async_fuzzer']	['async_fuzzer']
/src/libcoap/src/coap_net.c	['oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_proxy.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_session.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_debug.c	['split_uri_fuzzer', 'oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'get_asn1_tag_fuzzer', 'oscore_decrypt_fuzzer']	['split_uri_fuzzer', 'oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/tests/oss-fuzz/block_target.c	['block_fuzzer']	['block_fuzzer']
/usr/include/openssl/ssl.h	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	[]
/src/libcoap/src/coap_openssl.c	['split_uri_fuzzer', 'oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['split_uri_fuzzer', 'oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/tests/oss-fuzz/oscore_conf_parse_target.c	['oscore_conf_parse_fuzzer']	['oscore_conf_parse_fuzzer']
/src/libcoap/src/coap_netif.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/./include/coap3/coap_pdu_internal.h	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	[]
/src/libcoap/src/coap_uri.c	['split_uri_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['split_uri_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer']
/src/libcoap/tests/oss-fuzz/oscore_decrypt_target.c	['oscore_decrypt_fuzzer']	['oscore_decrypt_fuzzer']
/src/libcoap/src/oscore/oscore_context.c	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']
/src/libcoap/src/coap_strm_posix.c	['split_uri_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['split_uri_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'network_message_fuzzer']
/src/libcoap/tests/oss-fuzz/network_message_target.c	['network_message_fuzzer']	['network_message_fuzzer']
/src/libcoap/src/coap_prng.c	['oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']	['oscore_conf_parse_fuzzer', 'pdu_parse_udp_fuzzer', 'pdu_parse_tcp_fuzzer', 'pdu_parse_ws_fuzzer', 'block_fuzzer', 'block_check_fuzzer', 'async_fuzzer', 'observe_fuzzer', 'network_message_fuzzer', 'oscore_decrypt_fuzzer']

Directories in report

Directory
/src/libcoap/tests/oss-fuzz/
/src/libcoap/src/oscore/
/src/libcoap/src/
/usr/include/openssl/
/src/libcoap/./include/coap3/