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
310	310	7 : View List ['daemon_deinit_net', 'daemon_deinit_tls', 'daemon_deinit_auth_digest', 'daemon_deinit_large_buf', 'daemon_deinit_threading_and_conn', 'daemon_stop_threads', 'daemon_close_connections']	310	338	MHD_daemon_destroy	call site: 00190	/src/mhd2/src/mhd2/daemon_start.c:3472
12	12	1 : View List ['mhd_panic']	55	93	MHD_response_destroy	call site: 00116	/src/mhd2/src/mhd2/response_destroy.c:109
6	6	1 : View List ['clock_gettime']	10	10	mhd_mclock_init_once	call site: 00149	/src/mhd2/src/mhd2/mhd_mono_clock.c:395
5	5	1 : View List ['mhd_daemon_get_wait_max']	5	5	MHD_daemon_get_info_dynamic_sz	call site: 00188	/src/mhd2/src/mhd2/daemon_get_info.c:227
2	2	1 : View List ['pthread_mutex_lock']	16	35	MHD_response_add_header	call site: 00068	/src/mhd2/src/mhd2/response_add_header.c:136
2	2	1 : View List ['close']	2	2	fuzz_response_config(FuzzedDataProvider&,MHD_Response*)	call site: 00000	/src/fuzz_mhd2.cpp:164
2	2	1 : View List ['close']	2	2	dsettings_release	call site: 00191	/src/mhd2/src/mhd2/daemon_start.c:113
0	0	None	43	43	MHD_response_destroy	call site: 00117	/src/mhd2/src/mhd2/response_destroy.c:112
0	0	None	14	53	mhd_lib_init_global_if_needed	call site: 00146	/src/mhd2/src/mhd2/mhd_lib_init.c:426
0	0	None	14	22	MHD_response_set_options	call site: 00096	/src/mhd2/src/mhd2/response_set_options.c:59
0	0	None	14	14	mhd_lib_init_global_if_needed	call site: 00146	/src/mhd2/src/mhd2/mhd_lib_init.c:428
0	0	None	4	4	MHD_daemon_create	call site: 00142	/src/mhd2/src/mhd2/daemon_create.c:57

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           fuzz_digest_auth_calc(FuzzedDataProvider&)

[function] [call site] 00001


             MHD_digest_get_hash_size

[function] [call site] 00002


               digest_get_hash_size

[function] [call site] 00003


             MHD_digest_auth_calc_userhash

[function] [call site] 00004


               get_base_digest_algo

[function] [call site] 00005


               digest_init_one_time

[function] [call site] 00006


                 mhd_MD5_init

[function] [call site] 00007


                 mhd_SHA256_init

[function] [call site] 00008


                 mhd_SHA512_256_init

[function] [call site] 00009


               digest_get_size

[function] [call site] 00010


               strlen

[call site] 00011


               strlen

[call site] 00012


               calc_userhash

[function] [call site] 00013


                 digest_update

[function] [call site] 00014


                   mhd_MD5_update

[function] [call site] 00015


                     md5_transform

[function] [call site] 00016


                     md5_transform

[function] [call site] 00017


                   mhd_SHA256_update

[function] [call site] 00018


                     sha256_transform

[function] [call site] 00019


                     sha256_transform

[function] [call site] 00020


                   mhd_SHA512_256_update

[function] [call site] 00021


                     sha512_256_transform

[function] [call site] 00022


                     sha512_256_transform

[function] [call site] 00023


                 digest_update_with_colon

[function] [call site] 00024


                   digest_update

[function] [call site] 00025


                 digest_update

[function] [call site] 00026


                 digest_calc_hash

[function] [call site] 00027


                   mhd_MD5_finish

[function] [call site] 00028


                     md5_transform

[function] [call site] 00029


                     mhd_PUT_64BIT_LE_UNALIGN

[function] [call site] 00030


                     md5_transform

[function] [call site] 00031


                   mhd_SHA256_finish

[function] [call site] 00032


                     sha256_transform

[function] [call site] 00033


                     mhd_PUT_64BIT_BE_UNALIGN

[function] [call site] 00034


                     sha256_transform

[function] [call site] 00035


                   mhd_SHA512_256_finish

[function] [call site] 00036


                     sha512_256_transform

[function] [call site] 00037


                     sha512_256_transform

[function] [call site] 00038


             MHD_digest_auth_calc_userhash_hex

[function] [call site] 00039


               digest_get_hash_size

[function] [call site] 00040


               MHD_digest_auth_calc_userhash

[function] [call site] 00041


               mhd_bin_to_hex_z

[function] [call site] 00042


                 mhd_bin_to_hex

[function] [call site] 00043


                   uint8totwoxdigits

[function] [call site] 00044


             MHD_digest_auth_calc_userdigest

[function] [call site] 00045


               get_base_digest_algo

[function] [call site] 00046


               digest_init_one_time

[function] [call site] 00047


               digest_get_size

[function] [call site] 00048


               strlen

[call site] 00049


               strlen

[call site] 00050


               calc_userdigest

[function] [call site] 00051


                 digest_update

[function] [call site] 00052


                 digest_update_with_colon

[function] [call site] 00053


                 digest_update

[function] [call site] 00054


                 digest_update_with_colon

[function] [call site] 00055


                 digest_update_str

[function] [call site] 00056


                   strlen

[call site] 00057


                   digest_update

[function] [call site] 00058


                 digest_calc_hash

[function] [call site] 00059


           fuzz_response_creation(FuzzedDataProvider&)

[function] [call site] 00060


             MHD_response_from_buffer

[function] [call site] 00061


               response_create_basic

[function] [call site] 00062


                 calloc

[call site] 00063


                 calloc

[call site] 00064


             MHD_response_from_buffer

[function] [call site] 00065


             MHD_response_from_buffer

[function] [call site] 00066


           fuzz_response_config(FuzzedDataProvider&, MHD_Response*)

[function] [call site] 00067


             MHD_response_add_header

[function] [call site] 00068


               pthread_mutex_lock

[call site] 00069


               response_add_header_int

[function] [call site] 00070


                 strlen

[call site] 00071


                 strlen

[call site] 00072


                 memchr

[call site] 00073


                 memchr

[call site] 00074


                 memchr

[call site] 00075


                 memchr

[call site] 00076


                 memchr

[call site] 00077


                 memchr

[call site] 00078


                 memchr

[call site] 00079


                 response_add_header_no_check

[function] [call site] 00080


               pthread_mutex_unlock

[call site] 00081


               mhd_panic

[function] [call site] 00082


                 fprintf

[call site] 00083


                 fprintf

[call site] 00084


                 fprintf

[call site] 00085


                 abort

[call site] 00086


             MHD_response_add_header

[function] [call site] 00087


             MHD_response_add_header

[function] [call site] 00088


             MHD_response_add_header

[function] [call site] 00089


             MHD_response_add_predef_header

[function] [call site] 00090


             ToMhdBool(bool)

[function] [call site] 00091


             MHD_R_OPTION_REUSABLE(MHD_Bool)

[function] [call site] 00092


             MHD_response_set_options

[function] [call site] 00093


               pthread_mutex_lock

[call site] 00094


               pthread_mutex_unlock

[call site] 00095


               mhd_panic

[function] [call site] 00096


               response_make_reusable

[function] [call site] 00097


                 pthread_mutex_init

[call site] 00098


                 pthread_mutex_destroy

[call site] 00099


               pthread_mutex_unlock

[call site] 00100


               mhd_panic

[function] [call site] 00101


             ToMhdBool(bool)

[function] [call site] 00102


             MHD_R_OPTION_HEAD_ONLY_RESPONSE(MHD_Bool)

[function] [call site] 00103


             MHD_response_set_options

[function] [call site] 00104


             ToMhdBool(bool)

[function] [call site] 00105


             MHD_R_OPTION_CHUNKED_ENC(MHD_Bool)

[function] [call site] 00106


             MHD_response_set_options

[function] [call site] 00107


             ToMhdBool(bool)

[function] [call site] 00108


             MHD_R_OPTION_CONN_CLOSE(MHD_Bool)

[function] [call site] 00109


             MHD_response_set_options

[function] [call site] 00110


             mkstemp

[call site] 00111


             write

[call site] 00112


             lseek

[call site] 00113


             MHD_response_from_fd

[function] [call site] 00114


               response_create_basic

[function] [call site] 00115


             MHD_response_destroy

[function] [call site] 00116


               mhd_panic

[function] [call site] 00117


               response_full_deinit

[function] [call site] 00118


                 mhd_response_remove_auth_digest_headers

[function] [call site] 00119


                 mhd_response_remove_all_headers

[function] [call site] 00120


                 mhd_response_deinit_reusable

[function] [call site] 00121


                   pthread_mutex_destroy

[call site] 00122


                   mhd_panic

[function] [call site] 00123


                 mhd_response_deinit_content_data

[function] [call site] 00124


                   close

[call site] 00125


               mhd_response_dec_use_count

[function] [call site] 00126


                 mhd_panic

[function] [call site] 00127


                 response_full_deinit

[function] [call site] 00128


             close

[call site] 00129


             close

[call site] 00130


             unlink

[call site] 00131


             pipe

[call site] 00132


             write

[call site] 00133


             close

[call site] 00134


             MHD_response_from_pipe

[function] [call site] 00135


               response_create_basic

[function] [call site] 00136


             MHD_response_destroy

[function] [call site] 00137


             close

[call site] 00138


           MHD_response_destroy

[function] [call site] 00139


           fuzz_daemon_lifecycle(FuzzedDataProvider&)

[function] [call site] 00140


             MHD_daemon_create

[function] [call site] 00141


               mhd_lib_init_global_if_needed

[function] [call site] 00142


                 mhd_lib_global_lazy_init

[function] [call site] 00143


                   mhd_panic_init_default

[function] [call site] 00144


                   pthread_mutex_init

[call site] 00145


                 pthread_mutex_lock

[call site] 00146


                 mhd_lib_global_full_init_once

[function] [call site] 00147


                   mhd_mclock_init_once

[function] [call site] 00148


                     clock_gettime

[call site] 00149


                     clock_gettime

[call site] 00150


                     clock_gettime

[call site] 00151


                     clock_gettime

[call site] 00152


                     timespec_get

[call site] 00153


                     time

[call site] 00154


                   mhd_send_init_once

[function] [call site] 00155


                     iov_max_init_

[function] [call site] 00156


                       sysconf

[call site] 00157


                   mhd_tls_gnu_global_init

[function] [call site] 00158


                     gnutls_check_version

[call site] 00159


                     gnutls_global_init

[call site] 00160


                 mhd_lib_global_full_re_init

[function] [call site] 00161


                   mhd_tls_gnu_global_init

[function] [call site] 00162


                 pthread_mutex_unlock

[call site] 00163


                 mhd_panic

[function] [call site] 00164


               calloc

[call site] 00165


             daemon_configuration(FuzzedDataProvider&, MHD_Daemon*)

[function] [call site] 00166


               MHD_D_OPTION_POLL_SYSCALL(MHD_SockPollSyscall)

[function] [call site] 00167


               MHD_daemon_set_options

[function] [call site] 00168


                 strlen

[call site] 00169


                 strlen

[call site] 00170


                 strlen

[call site] 00171


               MHD_D_OPTION_BIND_PORT(MHD_AddressFamily, unsigned short)

[function] [call site] 00172


               MHD_daemon_set_options

[function] [call site] 00173


               MHD_D_OPTION_DEFAULT_TIMEOUT(unsigned int)

[function] [call site] 00174


               MHD_daemon_set_options

[function] [call site] 00175


               MHD_D_OPTION_CONN_MEMORY_LIMIT(unsigned long)

[function] [call site] 00176


               MHD_daemon_set_options

[function] [call site] 00177


               MHD_D_OPTION_LOG_CALLBACK(void (*)(void*, MHD_StatusCode, char const*, __va_list_tag*), void*)

[function] [call site] 00178


               dummy_log(void*, MHD_StatusCode, char const*, __va_list_tag*)

[function] [call site] 00179


               MHD_daemon_set_options

[function] [call site] 00180


               MHD_D_OPTION_RANDOM_ENTROPY(unsigned long, void*)

[function] [call site] 00181


               MHD_daemon_set_options

[function] [call site] 00182


               ToMhdBool(bool)

[function] [call site] 00183


               MHD_D_OPTION_REREGISTER_ALL(MHD_Bool)

[function] [call site] 00184


               MHD_daemon_set_options

[function] [call site] 00185


             MHD_daemon_get_info_fixed_sz

[function] [call site] 00186


             daemon_configuration(FuzzedDataProvider&, MHD_Daemon*)

[function] [call site] 00187


             MHD_daemon_get_info_dynamic_sz

[function] [call site] 00188


               mhd_daemon_get_wait_max

[function] [call site] 00189


             MHD_daemon_destroy

[function] [call site] 00190


               dsettings_release

[function] [call site] 00191


                 close

[call site] 00192


               daemon_stop_threads

[function] [call site] 00193


                 stop_individual_daemon_thread

[function] [call site] 00194


                   mhd_daemon_trigger_itc

[function] [call site] 00195


                     write

[call site] 00196


                     __errno_location

[call site] 00197


                     mhd_logger

[function] [call site] 00198


                   pthread_join

[call site] 00199


                   mhd_logger

[function] [call site] 00200


                 stop_worker_pool_threads

[function] [call site] 00201


                   mhd_daemon_trigger_itc

[function] [call site] 00202


                   pthread_join

[call site] 00203


                   mhd_logger

[function] [call site] 00204


               daemon_close_connections

[function] [call site] 00205


                 mhd_daemon_close_all_conns

[function] [call site] 00206


                   mhd_upgraded_deinit

[function] [call site] 00207


                     pthread_mutex_destroy

[call site] 00208


                     mhd_panic

[function] [call site] 00209


                   mhd_conn_start_closing

[function] [call site] 00210


                     mhd_socket_set_hard_close

[function] [call site] 00211


                       setsockopt

[call site] 00212


                     mhd_tls_gnu_conn_shutdown

[function] [call site] 00213


                       gnutls_bye

[call site] 00214


                       gnutls_record_get_direction

[call site] 00215


                     mhd_socket_shut_wr

[function] [call site] 00216


                       shutdown

[call site] 00217


                     mhd_logger

[function] [call site] 00218


                     mhd_conn_remove_from_timeout_lists

[function] [call site] 00219


                   mhd_conn_pre_clean

[function] [call site] 00220


                     mhd_conn_pre_clean_part1

[function] [call site] 00221


                       mhd_conn_mark_unready

[function] [call site] 00222


                       mhd_stream_call_dcc_cleanup_if_needed

[function] [call site] 00223


                       mhd_daemon_free_lbuf

[function] [call site] 00224


                         mhd_daemon_reclaim_lbuf

[function] [call site] 00225


                           mhd_daemon_get_master_daemon

[function] [call site] 00226


                           pthread_mutex_lock

[call site] 00227


                           mhd_panic

[function] [call site] 00228


                           pthread_mutex_unlock

[call site] 00229


                           mhd_panic

[function] [call site] 00230


                       mhd_log_extr_event_dereg_failed

[function] [call site] 00231


                         mhd_logger

[function] [call site] 00232


                       epoll_ctl

[call site] 00233


                       mhd_logger

[function] [call site] 00234


                     mhd_response_dec_use_count

[function] [call site] 00235


                     mhd_pool_destroy

[function] [call site] 00236


                       munmap

[call site] 00237


                   mhd_conn_remove_from_daemon

[function] [call site] 00238


                   mhd_conn_close_final

[function] [call site] 00239


                     mhd_tls_gnu_conn_deinit

[function] [call site] 00240


                       gnutls_deinit

[call site] 00241


                     close

[call site] 00242


                   mhd_logger

[function] [call site] 00243


               daemon_deinit_threading_and_conn

[function] [call site] 00244


                 deinit_individual_thread_data_events_conns

[function] [call site] 00245


                   deinit_individual_conns

[function] [call site] 00246


                     pthread_mutex_destroy

[call site] 00247


                     mhd_panic

[function] [call site] 00248


                   deinit_daemon_fds_monitoring

[function] [call site] 00249


                   deinit_itc

[function] [call site] 00250


                     close

[call site] 00251


                     __errno_location

[call site] 00252


                   deallocate_events

[function] [call site] 00253


                 deinit_workers_pool

[function] [call site] 00254


                   deinit_individual_thread_data_events_conns

[function] [call site] 00255


                   deinit_epoll

[function] [call site] 00256


                     close

[call site] 00257


               daemon_deinit_large_buf

[function] [call site] 00258


                 pthread_mutex_destroy

[call site] 00259


                 mhd_panic

[function] [call site] 00260


               daemon_deinit_tls

[function] [call site] 00261


                 mhd_tls_gnu_daemon_deinit

[function] [call site] 00262


                   daemon_deinit_priorities_cache

[function] [call site] 00263


                     gnutls_priority_deinit

[call site] 00264


                   daemon_deinit_credentials

[function] [call site] 00265


                     gnutls_certificate_free_credentials

[call site] 00266


                     daemon_deinit_dh_data

[function] [call site] 00267


               daemon_deinit_auth_digest

[function] [call site] 00268


                 pthread_mutex_destroy

[call site] 00269


                 mhd_panic

[function] [call site] 00270


               daemon_deinit_net

[function] [call site] 00271


                 deinit_epoll

[function] [call site] 00272


                 close

[call site] 00273


               mhd_lib_deinit_global_if_needed

[function] [call site] 00274


                 pthread_mutex_lock

[call site] 00275


                 mhd_panic

[function] [call site] 00276


                 mhd_lib_global_full_deinit

[function] [call site] 00277


                   mhd_tls_gnu_global_deinit

[function] [call site] 00278


                     gnutls_global_deinit

[call site] 00279


                 pthread_mutex_unlock

[call site] 00280


                 mhd_panic

[function] [call site] 00281