High level conclusions

Fuzzers reach 28.79% of cyclomatic complexity.

Fuzzers reach 36.09% of all functions.

Reachability and coverage overview

Functions statically reachable by fuzzers

1214 / 3363

Cyclomatic complexity statically reachable by fuzzers

7797 / 27077

Runtime code coverage of functions

726 / 3363

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: h2o-fuzzer-url

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	1	5.26%
gold	[1:9]	0	0.0%
yellow	[10:29]	2	10.5%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	16	84.2%
All colors	19	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
2	2	1 : View List ['strlen']	2	44	h2o_url_parse	call site: 00001	/src/h2o/lib/common/url.c:252

Runtime coverage analysis

Covered functions

7

Functions that are reachable but not covered

4

Reachable functions

11

Percentage of reachable functions covered

63.64%

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
fuzz/driver_url.cc	1
lib/common/url.c	4
include/h2o/memory.h	1
lib/common/string.c	1

Fuzzer: h2o-fuzzer-http1

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	3312	72.4%
gold	[1:9]	188	4.11%
yellow	[10:29]	20	0.43%
greenyellow	[30:49]	20	0.43%
lawngreen	50+	1034	22.6%
All colors	4574	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
1277	1277	5 : View List ['h2o_memis.6845', 'on_connect_error', 'memcmp', 'h2o_httpclient__h2_on_connect', 'h2o_socketpool_detach']	1277	1720	on_pool_connect	call site: 01662	/src/h2o/lib/common/httpclient.c:131
521	521	1 : View List ['shutdown_ssl']	521	521	h2o_socket_close	call site: 00694	/src/h2o/lib/common/socket.c:637
407	457	6 : View List ['generate_tls_records', 'zerocopy_buffers_push', 'h2o_mem_free_recycle', 'flatten_sendvec', 'h2o_iovec_init', 'dispose_ssl_output_buffer']	407	493	write_core	call site: 00793	/src/h2o/lib/common/socket/evloop.c.h:206
96	105	4 : View List ['h2o__fatal', 'shutdown', 'change_epoll_mode', 'handle_zerocopy_notification']	102	111	evloop_do_on_socket_close	call site: 00740	/src/h2o/lib/common/socket/evloop/epoll.c.h:285
46	46	2 : View List ['h2o_iovec_init.2065', 'h2o_get_compressible_types']	46	487	create_generator	call site: 03485	/src/h2o/lib/handler/file.c:292
23	23	1 : View List ['do_send_from_pipe']	23	23	do_proceed	call site: 00999	/src/h2o/lib/core/proxy.c:444
22	22	3 : View List ['h2o_hostinfo_aton', 'h2o_url_get_port', '__bswap_16.392']	22	22	detect_target_type	call site: 00221	/src/h2o/lib/common/socketpool.c:154
21	21	1 : View List ['prepare_for_latency_optimized_write']	21	21	h2o_socket_do_prepare_for_latency_optimized_write	call site: 02027	/src/h2o/lib/common/socket.c:790
19	19	1 : View List ['init_write_buf']	19	21	do_write	call site: 00856	/src/h2o/lib/common/socket/evloop.c.h:422
14	14	3 : View List ['h2o__fatal', 'h2o_strerror_r', '__errno_location']	14	14	init_async	call site: 03721	/src/h2o/lib/common/multithread.c:104
11	11	1 : View List ['encode_as_is']	11	20	do_encode_header	call site: 02202	/src/h2o/lib/http2/hpack.c:807
11	11	1 : View List ['encode_as_is']	11	11	do_encode_header	call site: 02205	/src/h2o/lib/http2/hpack.c:820

Runtime coverage analysis

Covered functions

559

Functions that are reachable but not covered

783

Reachable functions

1221

Percentage of reachable functions covered

35.87%

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
fuzz/driver.cc	8
lib/common/multithread.c	10
/usr/include/stdlib.h	1
lib/core/config.c	7
include/h2o/memory.h	23
lib/common/memory.c	23
include/h2o/linklist.h	6
lib/handler/mimemap.c	23
include/h2o/string_.h	4
deps/klib/khash.h	1
lib/common/socketpool.c	29
lib/core/configurator.c	6
lib/common/string.c	16
fuzz/driver_common.cc	4
lib/core/headers.c	8
lib/core/request.c	45
include/h2o.h	31
lib/common/socket.c	68
lib/common/url.c	13
lib/common/hostinfo.c	10
include/h2o/url.h	4
/usr/include/x86_64-linux-gnu/bits/byteswap.h	2
lib/common/balancer/roundrobin.c	1
include/h2o/socketpool.h	1
lib/handler/proxy.c	7
include/h2o/timerwheel.h	3
include/h2o/socket/evloop.h	5
lib/common/timerwheel.c	8
lib/common/httpclient.c	13
deps/picotls/lib/openssl.c	1
deps/quicly/lib/quicly.c	127
deps/quicly/lib/defaults.c	4
deps/picotls/lib/picotls.c	106
deps/picotls/include/picotls.h	10
deps/quicly/include/quicly/frame.h	24
lib/common/socket/evloop.c.h	32
lib/http3/server.c	1
lib/http3/common.c	24
include/h2o/http3_internal.h	12
/usr/include/x86_64-linux-gnu/bits/socket.h	1
deps/quicly/include/quicly.h	12
include/h2o/multithread.h	1
deps/quicly/include/quicly/cid.h	2
deps/quicly/lib/loss.c	2
deps/quicly/include/quicly/sentmap.h	6
deps/quicly/include/quicly/loss.h	7
deps/quicly/lib/sentmap.c	9
deps/quicly/lib/rate.c	4
quicly-tracer.h	12
deps/quicly/lib/sendstate.c	6
deps/quicly/include/quicly/ranges.h	2
deps/quicly/lib/recvstate.c	3
deps/quicly/include/quicly/linklist.h	4
deps/quicly/include/quicly/maxsender.h	4
deps/quicly/lib/ranges.c	6
lib/common/http3client.c	22
lib/common/socket/evloop/epoll.c.h	7
deps/picotls/include/picotls/../picotls.h	5
lib/core/util.c	10
lib/core/context.c	10
lib/common/time.c	8
lib/core/proxy.c	20
deps/cloexec/cloexec.c	1
lib/common/file.c	1
deps/picotls/lib/hpke.c	8
lib/common/../../deps/ssl-conservatory/openssl/openssl_hostname_validation.c	7
/usr/include/openssl/x509v3.h	3
lib/common/cache.c	12
include/h2o/hostinfo.h	1
lib/common/http1client.c	26
include/h2o/socket.h	5
deps/picohttpparser/picohttpparser.c	11
lib/common/token_table.h	6
include/h2o/httpclient.h	1
lib/common/http2client.c	49
lib/http2/hpack.c	32
lib/common/token.c	1
lib/http2/frame.c	8
include/h2o/http2_common.h	10
deps/quicly/lib/frame.c	3
deps/quicly/include/quicly/sendstate.h	2
deps/quicly/include/quicly/local_cid.h	1
deps/quicly/lib/local_cid.c	4
deps/quicly/include/quicly/retire_cid.h	1
deps/quicly/lib/retire_cid.c	2
lib/http3/qpack.c	38
deps/quicly/lib/cc-reno.c	1
deps/quicly/lib/remote_cid.c	1
deps/quicly/lib/streambuf.c	3
deps/quicly/include/quicly/streambuf.h	2
deps/quicly/include/quicly/recvstate.h	1
include/h2o/http3_common.h	1
lib/handler/headers_util.c	7
lib/handler/access_log.c	3
lib/core/logconf.c	5
include/h2o/time_.h	1
lib/handler/file.c	21
lib/common/filecache.c	12
/usr/include/x86_64-linux-gnu/sys/stat.h	2
lib/handler/file/templates.c.h	2
lib/common/rand.c	1
lib/handler/compress/gzip.c	9
lib/handler/compress.c	1
lib/http1.c	43
lib/http2/connection.c	35
include/h2o/http2_internal.h	15
lib/http2/scheduler.c	22
lib/http2/stream.c	13
include/h2o/http2_scheduler.h	3
lib/http2/casper.c	5
lib/http2/cache_digests.c	7
/usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h	1
deps/golombset/golombset.h	4
lib/common/absprio.c	1
include/h2o/absprio.h	1

Fuzzer: h2o-fuzzer-http2

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	3127	75.1%
gold	[1:9]	193	4.63%
yellow	[10:29]	18	0.43%
greenyellow	[30:49]	16	0.38%
lawngreen	50+	806	19.3%
All colors	4160	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
1277	1277	5 : View List ['h2o_memis.6845', 'on_connect_error', 'memcmp', 'h2o_httpclient__h2_on_connect', 'h2o_socketpool_detach']	1277	1720	on_pool_connect	call site: 01662	/src/h2o/lib/common/httpclient.c:131
521	521	1 : View List ['shutdown_ssl']	521	521	h2o_socket_close	call site: 00694	/src/h2o/lib/common/socket.c:637
407	457	6 : View List ['generate_tls_records', 'zerocopy_buffers_push', 'h2o_mem_free_recycle', 'flatten_sendvec', 'h2o_iovec_init', 'dispose_ssl_output_buffer']	407	493	write_core	call site: 00793	/src/h2o/lib/common/socket/evloop.c.h:206
267	267	1 : View List ['h2o_send_error_502']	267	267	h2o_reprocess_request	call site: 00917	/src/h2o/lib/core/request.c:443
96	105	4 : View List ['h2o__fatal', 'shutdown', 'change_epoll_mode', 'handle_zerocopy_notification']	102	111	evloop_do_on_socket_close	call site: 00740	/src/h2o/lib/common/socket/evloop/epoll.c.h:285
46	46	2 : View List ['h2o_iovec_init.2065', 'h2o_get_compressible_types']	46	487	create_generator	call site: 03485	/src/h2o/lib/handler/file.c:292
23	23	1 : View List ['do_send_from_pipe']	23	23	do_proceed	call site: 00999	/src/h2o/lib/core/proxy.c:444
22	22	3 : View List ['h2o_hostinfo_aton', 'h2o_url_get_port', '__bswap_16.392']	22	22	detect_target_type	call site: 00221	/src/h2o/lib/common/socketpool.c:154
21	21	1 : View List ['prepare_for_latency_optimized_write']	21	21	h2o_socket_do_prepare_for_latency_optimized_write	call site: 02027	/src/h2o/lib/common/socket.c:790
19	19	1 : View List ['init_write_buf']	19	21	do_write	call site: 00856	/src/h2o/lib/common/socket/evloop.c.h:422
14	14	3 : View List ['h2o__fatal', 'h2o_strerror_r', '__errno_location']	14	14	init_async	call site: 03721	/src/h2o/lib/common/multithread.c:104
11	11	1 : View List ['encode_as_is']	11	20	do_encode_header	call site: 02202	/src/h2o/lib/http2/hpack.c:807

Runtime coverage analysis

Covered functions

508

Functions that are reachable but not covered

745

Reachable functions

1113

Percentage of reachable functions covered

33.06%

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
fuzz/driver.cc	8
lib/common/multithread.c	10
/usr/include/stdlib.h	1
lib/core/config.c	7
include/h2o/memory.h	23
lib/common/memory.c	22
include/h2o/linklist.h	6
lib/handler/mimemap.c	23
include/h2o/string_.h	4
deps/klib/khash.h	1
lib/common/socketpool.c	29
lib/core/configurator.c	6
lib/common/string.c	13
fuzz/driver_common.cc	4
lib/core/headers.c	8
lib/core/request.c	37
include/h2o.h	29
lib/common/socket.c	67
lib/common/url.c	13
lib/common/hostinfo.c	10
include/h2o/url.h	4
/usr/include/x86_64-linux-gnu/bits/byteswap.h	2
lib/common/balancer/roundrobin.c	1
include/h2o/socketpool.h	1
lib/handler/proxy.c	7
include/h2o/timerwheel.h	3
include/h2o/socket/evloop.h	5
lib/common/timerwheel.c	8
lib/common/httpclient.c	13
deps/picotls/lib/openssl.c	1
deps/quicly/lib/quicly.c	127
deps/quicly/lib/defaults.c	4
deps/picotls/lib/picotls.c	106
deps/picotls/include/picotls.h	10
deps/quicly/include/quicly/frame.h	24
lib/common/socket/evloop.c.h	31
lib/http3/server.c	1
lib/http3/common.c	24
include/h2o/http3_internal.h	12
/usr/include/x86_64-linux-gnu/bits/socket.h	1
deps/quicly/include/quicly.h	12
include/h2o/multithread.h	1
deps/quicly/include/quicly/cid.h	2
deps/quicly/lib/loss.c	2
deps/quicly/include/quicly/sentmap.h	6
deps/quicly/include/quicly/loss.h	7
deps/quicly/lib/sentmap.c	9
deps/quicly/lib/rate.c	4
quicly-tracer.h	12
deps/quicly/lib/sendstate.c	6
deps/quicly/include/quicly/ranges.h	2
deps/quicly/lib/recvstate.c	3
deps/quicly/include/quicly/linklist.h	4
deps/quicly/include/quicly/maxsender.h	4
deps/quicly/lib/ranges.c	6
lib/common/http3client.c	22
lib/common/socket/evloop/epoll.c.h	7
deps/picotls/include/picotls/../picotls.h	5
lib/core/util.c	9
lib/core/context.c	10
lib/common/time.c	8
lib/core/proxy.c	20
deps/cloexec/cloexec.c	1
lib/common/file.c	1
deps/picotls/lib/hpke.c	8
lib/common/../../deps/ssl-conservatory/openssl/openssl_hostname_validation.c	7
/usr/include/openssl/x509v3.h	3
lib/common/cache.c	12
include/h2o/hostinfo.h	1
lib/common/http1client.c	26
include/h2o/socket.h	5
deps/picohttpparser/picohttpparser.c	7
lib/common/token_table.h	6
include/h2o/httpclient.h	1
lib/common/http2client.c	49
lib/http2/hpack.c	28
lib/common/token.c	1
lib/http2/frame.c	8
include/h2o/http2_common.h	10
deps/quicly/lib/frame.c	3
deps/quicly/include/quicly/sendstate.h	2
deps/quicly/include/quicly/local_cid.h	1
deps/quicly/lib/local_cid.c	4
deps/quicly/include/quicly/retire_cid.h	1
deps/quicly/lib/retire_cid.c	2
lib/http3/qpack.c	38
deps/quicly/lib/cc-reno.c	1
deps/quicly/lib/remote_cid.c	1
deps/quicly/lib/streambuf.c	3
deps/quicly/include/quicly/streambuf.h	2
deps/quicly/include/quicly/recvstate.h	1
include/h2o/http3_common.h	1
lib/handler/headers_util.c	7
lib/handler/access_log.c	3
lib/core/logconf.c	5
include/h2o/time_.h	1
lib/handler/file.c	21
lib/common/filecache.c	12
/usr/include/x86_64-linux-gnu/sys/stat.h	2
lib/handler/file/templates.c.h	2
lib/common/rand.c	1
lib/handler/compress/gzip.c	9
lib/handler/compress.c	1
lib/http2/connection.c	27
include/h2o/http2_internal.h	10
lib/http2/scheduler.c	19
lib/http2/stream.c	7
include/h2o/http2_scheduler.h	2
lib/http2/casper.c	1
lib/http2/cache_digests.c	3

Fuzzer: h2o-fuzzer-http3

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	2456	72.0%
gold	[1:9]	198	5.80%
yellow	[10:29]	28	0.82%
greenyellow	[30:49]	3	0.08%
lawngreen	50+	723	21.2%
All colors	3408	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
1277	1277	5 : View List ['h2o_memis.6845', 'on_connect_error', 'memcmp', 'h2o_httpclient__h2_on_connect', 'h2o_socketpool_detach']	1277	1720	on_pool_connect	call site: 01627	/src/h2o/lib/common/httpclient.c:131
521	521	1 : View List ['shutdown_ssl']	521	521	h2o_socket_close	call site: 00670	/src/h2o/lib/common/socket.c:637
407	457	6 : View List ['generate_tls_records', 'zerocopy_buffers_push', 'h2o_mem_free_recycle', 'flatten_sendvec', 'h2o_iovec_init', 'dispose_ssl_output_buffer']	407	493	write_core	call site: 00767	/src/h2o/lib/common/socket/evloop.c.h:206
267	267	1 : View List ['h2o_send_error_502']	267	267	h2o_reprocess_request	call site: 00888	/src/h2o/lib/core/request.c:443
96	105	4 : View List ['h2o__fatal', 'shutdown', 'change_epoll_mode', 'handle_zerocopy_notification']	102	111	evloop_do_on_socket_close	call site: 00716	/src/h2o/lib/common/socket/evloop/epoll.c.h:285
49	76	3 : View List ['decoder_link_blocked', 'qpack_table_total_inserts', 'decode_int']	49	76	parse_decode_context	call site: 02444	/src/h2o/lib/http3/qpack.c:775
46	46	2 : View List ['h2o_iovec_init.2065', 'h2o_get_compressible_types']	46	487	create_generator	call site: 02884	/src/h2o/lib/handler/file.c:292
29	29	1 : View List ['check_run_blocked']	32	41	pre_dispose_request	call site: 03224	/src/h2o/lib/http3/server.c:434
23	23	1 : View List ['do_send_from_pipe']	23	23	do_proceed	call site: 00980	/src/h2o/lib/core/proxy.c:444
22	22	3 : View List ['h2o_hostinfo_aton', 'h2o_url_get_port', '__bswap_16.392']	22	22	detect_target_type	call site: 00455	/src/h2o/lib/common/socketpool.c:154
14	14	3 : View List ['h2o__fatal', 'h2o_strerror_r', '__errno_location']	14	14	init_async	call site: 03120	/src/h2o/lib/common/multithread.c:104
10	10	2 : View List ['h2o__fatal', 'posix_memalign']	10	10	h2o_mem_aligned_alloc	call site: 00030	/src/h2o/include/h2o/memory.h:449

Runtime coverage analysis

Covered functions

493

Functions that are reachable but not covered

497

Reachable functions

825

Percentage of reachable functions covered

39.76%

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
fuzz/driver_h3.cc	3
lib/common/multithread.c	9
/usr/include/stdlib.h	1
lib/handler/access_log.c	6
lib/core/logconf.c	9
include/h2o/memory.h	22
lib/common/memory.c	22
lib/common/string.c	13
include/h2o/string_.h	4
lib/common/token_table.h	6
lib/common/serverutil.c	2
/usr/include/x86_64-linux-gnu/sys/stat.h	2
lib/core/config.c	7
include/h2o/linklist.h	6
lib/handler/mimemap.c	23
deps/klib/khash.h	1
lib/common/socketpool.c	29
lib/core/configurator.c	6
fuzz/driver_common.cc	3
lib/common/url.c	13
lib/common/hostinfo.c	10
include/h2o/url.h	4
/usr/include/x86_64-linux-gnu/bits/byteswap.h	3
lib/common/balancer/roundrobin.c	1
include/h2o/socketpool.h	1
lib/handler/proxy.c	7
include/h2o/timerwheel.h	3
include/h2o/socket/evloop.h	5
lib/common/timerwheel.c	9
lib/common/httpclient.c	13
include/h2o.h	29
deps/picotls/lib/openssl.c	1
fuzz/quicly_mock.c	33
deps/quicly/lib/defaults.c	4
deps/picotls/lib/picotls.c	100
deps/picotls/include/picotls.h	8
deps/quicly/include/quicly/frame.h	4
lib/common/socket/evloop.c.h	32
lib/http3/server.c	20
lib/http3/common.c	25
include/h2o/http3_internal.h	14
lib/common/socket.c	66
/usr/include/x86_64-linux-gnu/bits/socket.h	1
deps/quicly/include/quicly.h	12
include/h2o/multithread.h	1
lib/common/http3client.c	22
lib/common/socket/evloop/epoll.c.h	8
deps/picotls/include/picotls/../picotls.h	5
lib/core/util.c	6
lib/core/request.c	37
lib/core/context.c	9
lib/common/time.c	8
lib/core/headers.c	8
lib/core/proxy.c	20
deps/cloexec/cloexec.c	1
lib/common/file.c	1
deps/picotls/lib/hpke.c	8
lib/common/../../deps/ssl-conservatory/openssl/openssl_hostname_validation.c	7
/usr/include/openssl/x509v3.h	3
lib/common/cache.c	12
include/h2o/hostinfo.h	1
lib/common/http1client.c	26
include/h2o/socket.h	5
deps/picohttpparser/picohttpparser.c	7
include/h2o/httpclient.h	1
lib/common/http2client.c	49
lib/http2/hpack.c	27
lib/common/token.c	1
lib/http2/frame.c	7
include/h2o/http2_common.h	10
lib/http3/qpack.c	38
deps/quicly/lib/sendstate.c	8
deps/quicly/include/quicly/ranges.h	2
deps/quicly/lib/recvstate.c	4
deps/quicly/lib/ranges.c	6
deps/quicly/include/quicly/sendstate.h	2
deps/quicly/include/quicly/recvstate.h	2
include/h2o/http3_common.h	1
lib/handler/headers_util.c	7
include/h2o/time_.h	1
lib/handler/file.c	21
lib/common/filecache.c	12
lib/handler/file/templates.c.h	2
lib/common/rand.c	1
lib/handler/compress/gzip.c	9
lib/handler/compress.c	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
ptls_init_compressed_certificate	/src/h2o/deps/picotls/lib/certificate_compression.c	5	['struct.st_ptls_emit_compressed_certificate_t *', 'struct.st_h2o_iovec_t *', 'size_t ', 'char *', 'size_t ']	12	0	60	11	5	251	0	6409	6366
yaml_parser_load	/src/h2o/deps/yaml/src/loader.c	2	['struct.yaml_parser_s *', 'struct.yaml_document_s *']	9	0	152	30	10	95	0	1860	1850
yaml_emitter_dump	/src/h2o/deps/yaml/src/dumper.c	2	['struct.yaml_emitter_s *', 'struct.yaml_document_s *']	9	0	170	28	10	73	0	1213	1168
decompress_certificate	/src/h2o/deps/picotls/lib/certificate_compression.c	6	['struct.st_ptls_decompress_certificate_t.464 *', 'struct.st_ptls_t *', 'N/A', 'char *', 'size_t ', 'struct.st_h2o_iovec_t *']	4	0	56	11	5	44	0	664	662
h2o_accept_setup_redis_ssl_resumption	/src/h2o/lib/core/util.c	4	['char *', 'N/A', 'int ', 'char *']	15	0	28	3	2	538	0	2737	613
h2o_errordoc_register	/src/h2o/lib/handler/errordoc.c	3	['struct.st_h2o_pathconf_t *', 'struct.st_ptls_compressed_certificate_entry_t *', 'size_t ']	18	0	67	9	4	778	0	3948	549
h2o_proxy_register_configurator	/src/h2o/lib/handler/configurator/proxy.c	1	['struct.st_h2o_globalconf_t *']	6	0	86	3	2	261	0	1082	426

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

Functions statically reachable by fuzzers

1936 / 3363

Cyclomatic complexity statically reachable by fuzzers

19327 / 27077

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 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
h2o_filecache_open_file	42	23	54.76%	[]
on_head	119	43	36.13%	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
h2o_httpclient_connect	47	13	27.65%	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
h2o_buffer_try_reserve	86	38	44.18%	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
h2o_socket_sendvec	33	15	45.45%	[]
write_core	54	4	7.407%	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
h2o_socketpool_connect	76	31	40.78%	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
create_generator	58	10	17.24%	[]
send_headers	90	22	24.44%	['h2o-fuzzer-http1']
kh_resize_h2o_quic_idmap	62	34	54.83%	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
quicly_ranges_subtract	50	19	38.0%	['h2o-fuzzer-http3']
h2o_qpack_lookup_content_type	48	15	31.25%	[]
parse_decode_context	41	22	53.65%	[]
do_flatten_header	50	11	22.0%	[]
run_delayed	58	18	31.03%	['h2o-fuzzer-http3']
handle_input_expect_headers_process_connect	32	17	53.12%	[]
on_h3_destroy	33	17	51.51%	[]

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/h2o/lib/core/logconf.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/usr/include/x86_64-linux-gnu/bits/socket.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/hiredis/hiredis.c	[]	[]
/src/h2o/deps/libyrmcds/send_text.c	[]	[]
/src/h2o/lib/common/token_table.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/configurator/headers_util.c	[]	[]
/src/h2o/lib/common/memory.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/usr/include/stdlib.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/quicly/include/quicly/maxsender.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/lib/core/context.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/headers.c	[]	[]
/src/h2o/deps/yaml/src/parser.c	[]	[]
/src/h2o/fuzz/quicly_mock.c	['h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/lib/handler/mimemap.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/picotls/lib/picotls.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/lib/http3/server.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/http2/connection.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/usr/include/openssl/x509.h	[]	[]
/src/h2o/deps/hiredis/read.c	[]	[]
/src/h2o/lib/common/serverutil.c	['h2o-fuzzer-http3']	[]
/src/h2o/deps/brotli/c/common/dictionary.c	[]	[]
/src/h2o/lib/handler/configurator/reproxy.c	[]	[]
/src/h2o/include/h2o/httpclient.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/usr/include/x86_64-linux-gnu/sys/stat.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/lib/common/filecache.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/connect.c	[]	[]
/src/h2o/include/h2o/hostinfo.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/picotls/include/picotls.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/include/h2o/socket/evloop.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/include/h2o/socket.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/access_log.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/brotli/c/enc/./backward_references_inc.h	[]	[]
/src/h2o/deps/brotli/c/enc/literal_cost.c	[]	[]
/src/h2o/fuzz/driver_url.cc	['h2o-fuzzer-url']	['h2o-fuzzer-url']
/src/h2o/lib/http2/frame.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/lib/common/socket/evloop.c.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/configurator/self_trace.c	[]	[]
/src/h2o/deps/quicly/lib/loss.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/lib/http2/scheduler.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/lib/core/request.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/yaml/src/scanner.c	[]	[]
/src/h2o/include/h2o/socketpool.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/quicly/include/quicly/recvstate.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/lib/core/proxy.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/file/templates.c.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/hiredis/sds.h	[]	[]
/src/h2o/deps/libyrmcds/text_mode.c	[]	[]
/src/h2o/deps/quicly/lib/cc-reno.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/deps/yaml/src/reader.c	[]	[]
/src/h2o/deps/brotli/c/enc/entropy_encode.c	[]	[]
/src/h2o/lib/common/http3client.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/expires.c	[]	[]
/src/h2o/include/h2o/http2_common.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/lib/common/multithread.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/common/socket/evloop/epoll.c.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/common/file.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/lib/handler/configurator/errordoc.c	[]	[]
/src/h2o/deps/yaml/src/loader.c	[]	[]
/src/h2o/lib/common/time.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/brotli/c/enc/compress_fragment_two_pass.c	[]	[]
/src/h2o/lib/common/cache.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/lib/handler/compress.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/deps/picotls/deps/cifra/src/bitops.h	[]	[]
/src/h2o/deps/picohttpparser/picohttpparser.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/quicly/include/quicly/ranges.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/lib/http1.c	['h2o-fuzzer-http1']	['h2o-fuzzer-http1']
/usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h	['h2o-fuzzer-http1']	[]
/src/h2o/deps/brotli/c/enc/./block_splitter_inc.h	[]	[]
/src/h2o/deps/quicly/include/quicly/sentmap.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/lib/common/httpclient.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/yaml/src/writer.c	[]	[]
/src/h2o/lib/common/socket.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/usr/include/openssl/x509v3.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/lib/http2/stream.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/deps/quicly/include/quicly/streambuf.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/include/h2o/linklist.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/server_timing.c	[]	[]
/src/h2o/deps/brotli/c/enc/backward_references.c	[]	[]
/src/h2o/deps/brotli/c/enc/./hash_longest_match64_inc.h	[]	[]
/src/h2o/include/h2o/absprio.h	['h2o-fuzzer-http1']	[]
/src/h2o/deps/brotli/c/enc/metablock.c	[]	[]
/src/h2o/lib/handler/configurator/access_log.c	[]	[]
/src/h2o/lib/handler/reproxy.c	[]	[]
/src/h2o/deps/picotls/deps/cifra/src/blockwise.c	[]	[]
/src/h2o/lib/handler/configurator/status.c	[]	[]
/src/h2o/include/h2o/multithread.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/brotli/c/enc/./hash_forgetful_chain_inc.h	[]	[]
/src/h2o/deps/picotls/include/picotls/../picotls.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/lib/http3/qpack.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/lib/handler/status.c	[]	[]
/src/h2o/lib/handler/configurator/file.c	[]	[]
/src/h2o/lib/handler/compress/brotli.c	[]	[]
/src/h2o/fuzz/driver_common.cc	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/compress/gzip.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/lib/common/http1client.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/quicly/lib/frame.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/lib/common/url.c	['h2o-fuzzer-url', 'h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-url', 'h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/common/../../deps/ssl-conservatory/openssl/openssl_hostname_validation.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/cloexec/cloexec.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/quicly/lib/quicly.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/deps/picotls/lib/cifra/random.c	[]	[]
/src/h2o/deps/yaml/src/api.c	[]	[]
/src/h2o/deps/brotli/c/enc/histogram.c	[]	[]
/src/h2o/deps/quicly/lib/defaults.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/deps/picotls/lib/certificate_compression.c	[]	[]
/src/h2o/deps/brotli/c/enc/backward_references_hq.c	[]	[]
/src/h2o/deps/quicly/lib/cc-pico.c	[]	[]
/src/h2o/deps/libyrmcds/close.c	[]	[]
/src/h2o/lib/handler/configurator/headers.c	[]	[]
/src/h2o/deps/picotls/lib/openssl.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/hiredis/dict.c	[]	[]
/src/h2o/lib/handler/status/memory.c	[]	[]
/src/h2o/lib/handler/configurator/throttle_resp.c	[]	[]
/src/h2o/deps/brotli/c/enc/./bit_cost_inc.h	[]	[]
/src/h2o/deps/picotls/lib/hpke.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/quicly/include/quicly/sendstate.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/deps/brotli/c/enc/./metablock_inc.h	[]	[]
/src/h2o/deps/brotli/c/dec/state.c	[]	[]
/src/h2o/deps/quicly/include/quicly.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/deps/hiredis/net.c	[]	[]
/src/h2o/fuzz/driver_h3.cc	['h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/deps/hiredis/async.c	[]	[]
/src/h2o/lib/handler/self_trace.c	[]	[]
/src/h2o/lib/handler/fastcgi.c	[]	[]
/src/h2o/include/h2o/string_.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/include/h2o.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/quicly/include/quicly/retire_cid.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/lib/common/balancer/least_conn.c	[]	[]
/src/h2o/deps/yaml/src/dumper.c	[]	[]
/src/h2o/deps/brotli/c/enc/encode.c	[]	[]
/src/h2o/deps/klib/khash.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/picotls/deps/cifra/src/hmac.c	[]	[]
/src/h2o/lib/common/token.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/picotls/lib/cifra/x25519.c	[]	[]
/src/h2o/lib/core/util.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/brotli/c/dec/./transform.h	[]	[]
/src/h2o/deps/quicly/include/quicly/loss.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/deps/brotli/c/enc/utf8_util.c	[]	[]
/src/h2o/deps/brotli/c/enc/./hash_longest_match_inc.h	[]	[]
/src/h2o/deps/libyrmcds/recv.c	[]	[]
/src/h2o/deps/hiredis/sds.c	[]	[]
/src/h2o/deps/picotls/deps/cifra/src/drbg.c	[]	[]
/src/h2o/lib/handler/configurator/redirect.c	[]	[]
/src/h2o/deps/brotli/c/enc/./hash_to_binary_tree_inc.h	[]	[]
/src/h2o/include/h2o/http3_common.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/quicly/lib/recvstate.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/lib/core/config.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/http2/cache_digests.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/fuzz/driver.cc	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/deps/brotli/c/dec/bit_reader.c	[]	[]
/src/h2o/deps/quicly/lib/cc-cubic.c	[]	[]
/src/h2o/deps/quicly/lib/rate.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/lib/common/absprio.c	['h2o-fuzzer-http1']	[]
/src/h2o/lib/handler/status/events.c	[]	[]
/src/h2o/lib/common/balancer/roundrobin.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/quicly-tracer.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/lib/common/string.c	['h2o-fuzzer-url', 'h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-url', 'h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/quicly/include/quicly/frame.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/lib/handler/configurator/server_timing.c	[]	[]
/src/h2o/deps/brotli/c/enc/compress_fragment.c	[]	[]
/src/h2o/lib/handler/redirect.c	[]	[]
/src/h2o/deps/brotli/c/enc/./block_encoder_inc.h	[]	[]
/src/h2o/include/h2o/http3_internal.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/include/h2o/url.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/headers_util.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/lib/handler/configurator/fastcgi.c	[]	[]
/src/h2o/deps/libyrmcds/strerror.c	[]	[]
/src/h2o/deps/picotls/deps/cifra/src/ext/handy.h	[]	[]
/src/h2o/deps/yaml/src/emitter.c	[]	[]
/src/h2o/deps/libgkc/gkc.c	[]	[]
/src/h2o/lib/handler/file.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/core/headers.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/configurator/proxy.c	[]	[]
/src/h2o/deps/brotli/c/enc/./hash_longest_match_quickly_inc.h	[]	[]
/src/h2o/deps/picotls/lib/pembase64.c	[]	[]
/src/h2o/lib/http2/casper.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/lib/handler/errordoc.c	[]	[]
/src/h2o/lib/handler/configurator/compress.c	[]	[]
/src/h2o/lib/http2/http2_debug_state.c	[]	[]
/src/h2o/deps/quicly/lib/ranges.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/deps/libyrmcds/connect.c	[]	[]
/src/h2o/deps/quicly/lib/local_cid.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/deps/brotli/c/enc/static_dict.c	[]	[]
/src/h2o/lib/handler/http2_debug_state.c	[]	[]
/src/h2o/lib/handler/status/ssl.c	[]	[]
/src/h2o/deps/yoml/yoml.h	[]	[]
/src/h2o/deps/quicly/lib/remote_cid.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/lib/http2/hpack.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/libyrmcds/socket.c	[]	[]
/src/h2o/lib/core/configurator.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/common/http2client.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/handler/proxy.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/common/redis.c	[]	[]
/src/h2o/lib/http3/frame.c	[]	[]
/src/h2o/lib/handler/status/requests.c	[]	[]
/src/h2o/include/h2o/http2_scheduler.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/lib/handler/configurator/http2_debug_state.c	[]	[]
/src/h2o/lib/common/rand.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/brotli/c/enc/./cluster_inc.h	[]	[]
/src/h2o/deps/brotli/c/dec/decode.c	[]	[]
/src/h2o/deps/quicly/include/quicly/linklist.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/deps/quicly/include/quicly/cid.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/include/h2o/memory.h	['h2o-fuzzer-url', 'h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-url', 'h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/quicly/lib/sendstate.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http3']
/src/h2o/lib/common/timerwheel.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/picotls/deps/cifra/src/chash.c	[]	[]
/src/h2o/lib/handler/throttle_resp.c	[]	[]
/src/h2o/lib/http3/common.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/brotli/c/enc/brotli_bit_stream.c	[]	[]
/src/h2o/deps/brotli/c/enc/block_splitter.c	[]	[]
/src/h2o/deps/quicly/lib/streambuf.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/include/h2o/time_.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/lib/common/hostinfo.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/picotls/deps/cifra/src/curve25519.tweetnacl.c	[]	[]
/src/h2o/lib/common/memcached.c	[]	[]
/usr/include/x86_64-linux-gnu/bits/byteswap.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	[]
/src/h2o/deps/quicly/include/quicly/local_cid.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/deps/quicly/lib/retire_cid.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/deps/libyrmcds/send.c	[]	[]
/src/h2o/lib/handler/status/durations.c	[]	[]
/src/h2o/include/h2o/http2_internal.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']
/src/h2o/deps/brotli/c/dec/huffman.c	[]	[]
/src/h2o/lib/handler/configurator/expires.c	[]	[]
/src/h2o/lib/common/socketpool.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/quicly/lib/sentmap.c	['h2o-fuzzer-http1', 'h2o-fuzzer-http2']	[]
/src/h2o/deps/golombset/golombset.h	['h2o-fuzzer-http1']	['h2o-fuzzer-http1']
/src/h2o/deps/brotli/c/enc/memory.c	[]	[]
/src/h2o/include/h2o/timerwheel.h	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']	['h2o-fuzzer-http1', 'h2o-fuzzer-http2', 'h2o-fuzzer-http3']
/src/h2o/deps/picotls/deps/cifra/src/sha256.c	[]	[]

Directories in report

Directory
/usr/include/x86_64-linux-gnu/sys/
/src/h2o/include/h2o/
/src/h2o/deps/brotli/c/dec/
/src/h2o/deps/libgkc/
/src/h2o/deps/picotls/include/
/src/h2o/lib/handler/configurator/
/usr/include/openssl/
/src/h2o/deps/picotls/deps/cifra/src/
/src/h2o/lib/
/usr/include/x86_64-linux-gnu/bits/
/src/h2o/lib/common/socket/evloop/
/src/h2o/
/src/h2o/deps/cloexec/
/src/h2o/deps/picotls/include/picotls/../
/src/h2o/deps/hiredis/
/src/h2o/deps/quicly/lib/
/src/h2o/lib/handler/status/
/src/h2o/deps/brotli/c/dec/./
/src/h2o/include/h2o/socket/
/src/h2o/lib/http2/
/src/h2o/deps/golombset/
/src/h2o/deps/picohttpparser/
/src/h2o/deps/picotls/lib/
/src/h2o/deps/brotli/c/enc/./
/src/h2o/lib/http3/
/src/h2o/lib/core/
/src/h2o/deps/brotli/c/common/
/src/h2o/deps/quicly/include/quicly/
/src/h2o/deps/picotls/lib/cifra/
/src/h2o/lib/common/socket/
/src/h2o/lib/handler/file/
/src/h2o/deps/yaml/src/
/src/h2o/lib/common/balancer/
/src/h2o/lib/common/../../deps/ssl-conservatory/openssl/
/src/h2o/fuzz/
/src/h2o/lib/common/
/src/h2o/lib/handler/compress/
/src/h2o/deps/libyrmcds/
/src/h2o/deps/yoml/
/src/h2o/deps/picotls/deps/cifra/src/ext/
/src/h2o/include/
/src/h2o/lib/handler/
/src/h2o/deps/klib/
/usr/include/
/src/h2o/deps/brotli/c/enc/
/src/h2o/deps/quicly/include/