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
133	136	2 : View List ['nxt_process_arguments', 'nxt_log_start']	133	136	nxt_lib_start	call site: 00064	/src/unit/src/nxt_lib.c:113
25	39	2 : View List ['nxt_free', 'nxt_rbtree_delete']	25	39	nxt_mp_chunk_free	call site: 00000	/src/unit/src/nxt_mp.c:899
6	6	3 : View List ['open64', 'close', 'read']	8	15	nxt_random_stir	call site: 00058	/src/unit/src/nxt_random.c:85
6	6	3 : View List ['open64', 'dup2', 'close']	6	6	nxt_stderr_start	call site: 00003	/src/unit/src/nxt_file.c:611
5	5	1 : View List ['nxt_thread_time_shared']	5	5	nxt_thread_time_update	call site: 00015	/src/unit/src/nxt_thread_time.c:52
2	7	2 : View List ['nxt_thread_tid', 'gettimeofday']	2	9	nxt_random_stir	call site: 00059	/src/unit/src/nxt_random.c:94
0	142	1 : View List ['nxt_mp_alloc_large']	0	142	nxt_mp_align	call site: 00000	/src/unit/src/nxt_mp.c:445
0	0	None	16	43	nxt_vsprintf	call site: 00000	/src/unit/src/nxt_sprintf.c:302
0	0	None	16	43	nxt_vsprintf	call site: 00000	/src/unit/src/nxt_sprintf.c:310
0	0	None	16	43	nxt_vsprintf	call site: 00000	/src/unit/src/nxt_sprintf.c:316
0	0	None	16	43	nxt_vsprintf	call site: 00000	/src/unit/src/nxt_sprintf.c:543
0	0	None	14	128	nxt_strerror_start	call site: 00021	/src/unit/src/nxt_errno.c:71

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           nxt_lib_start

[function] [call site] 00001


             nxt_stderr_start

[function] [call site] 00002


               fcntl64

[call site] 00003


               fcntl64

[call site] 00004


               open64

[call site] 00005


               dup2

[call site] 00006


               close

[call site] 00007


             nxt_log_start

[function] [call site] 00008


             getpid

[call site] 00009


             getppid

[call site] 00010


             geteuid

[call site] 00011


             getegid

[call site] 00012


             mallopt

[call site] 00013


             pthread_self

[call site] 00014


             nxt_thread_time_update

[function] [call site] 00015


               nxt_thread_time_shared

[function] [call site] 00016


               nxt_monotonic_time

[function] [call site] 00017


                 clock_gettime

[call site] 00018


             nxt_strerror_start

[function] [call site] 00019


               __errno_location

[call site] 00020


               strerror

[call site] 00021


               strlen

[call site] 00022


               __errno_location

[call site] 00023


               memcmp

[call site] 00024


               nxt_malloc

[function] [call site] 00025


                 nxt_malloc_log

[function] [call site] 00026


                 nxt_malloc_log

[function] [call site] 00027


                 nxt_log_moderate_allow

[function] [call site] 00028


                   nxt_thread_time

[function] [call site] 00029


                     nxt_thread_realtime_update

[function] [call site] 00030


                       nxt_realtime

[function] [call site] 00031


                         clock_gettime

[call site] 00032


                       nxt_realtime

[function] [call site] 00033


                   nxt_thread_spin_lock

[function] [call site] 00034


                     pthread_yield

[call site] 00035


                   nxt_thread_spin_unlock

[function] [call site] 00036


                   nxt_log_moderate_timer_handler

[function] [call site] 00037


                     nxt_thread_spin_lock

[function] [call site] 00038


                     nxt_thread_time

[function] [call site] 00039


                     nxt_thread_spin_unlock

[function] [call site] 00040


                   nxt_timer_add

[function] [call site] 00041

abs

[call site] 00042


                     nxt_timer_change

[function] [call site] 00043


                       nxt_timer_changes_commit

[function] [call site] 00044


                         nxt_rbtree_delete

[function] [call site] 00045


                           nxt_rbtree_delete_fixup

[function] [call site] 00046


                         nxt_rbtree_insert

[function] [call site] 00047


                           nxt_rbtree_insert_fixup

[function] [call site] 00048


                     nxt_timer_change

[function] [call site] 00049


                 __errno_location

[call site] 00050


               strerror

[call site] 00051


               strlen

[call site] 00052


               nxt_runtime_strerror

[function] [call site] 00053


             sysconf

[call site] 00054


             nxt_thread_spin_init

[function] [call site] 00055


             nxt_random_init

[function] [call site] 00056


               nxt_random_stir

[function] [call site] 00057


                 getrandom

[call site] 00058


                 close

[call site] 00059


                 gettimeofday

[call site] 00060


                 nxt_thread_tid

[function] [call site] 00061


                   syscall

[call site] 00062


                 nxt_random_add

[function] [call site] 00063


             getpagesize

[call site] 00064


             nxt_process_arguments

[function] [call site] 00065


               strlen

[call site] 00066


               nxt_malloc

[function] [call site] 00067


               nxt_malloc

[function] [call site] 00068


               strlen

[call site] 00069


               nxt_malloc

[function] [call site] 00070


               strlen

[call site] 00071


             nxt_log_start

[function] [call site] 00072


           nxt_mp_create

[function] [call site] 00073


             nxt_zalloc

[function] [call site] 00074


               nxt_malloc

[function] [call site] 00075


             nxt_rbtree_init

[function] [call site] 00076


             nxt_mp_rbtree_compare

[function] [call site] 00077


           nxt_conf_json_parse

[function] [call site] 00078


             nxt_mp_get

[function] [call site] 00079


               nxt_mp_get_small

[function] [call site] 00080


                 nxt_thread_tid

[function] [call site] 00081


                 raise

[call site] 00082


                 nxt_mp_alloc_page

[function] [call site] 00083


                   nxt_mp_alloc_cluster

[function] [call site] 00084


                     nxt_zalloc

[function] [call site] 00085


                     nxt_memalign

[function] [call site] 00086


                       posix_memalign

[call site] 00087


                       nxt_malloc_log

[function] [call site] 00088


                       nxt_log_moderate_allow

[function] [call site] 00089


                     nxt_free

[function] [call site] 00090


                       nxt_malloc_log

[function] [call site] 00091


                     nxt_rbtree_insert

[function] [call site] 00092


               nxt_mp_alloc_large

[function] [call site] 00093


                 nxt_thread_tid

[function] [call site] 00094


                 raise

[call site] 00095


                 nxt_malloc

[function] [call site] 00096


                 nxt_memalign

[function] [call site] 00097


                 nxt_free

[function] [call site] 00098


                 nxt_memalign

[function] [call site] 00099


                 nxt_rbtree_insert

[function] [call site] 00100


             nxt_conf_json_skip_space

[function] [call site] 00101


             nxt_conf_json_parse_error

[function] [call site] 00102


             nxt_conf_json_parse_value

[function] [call site] 00103


               nxt_conf_json_parse_object

[function] [call site] 00104


                 nxt_mp_create

[function] [call site] 00105


                 nxt_conf_json_skip_space

[function] [call site] 00106


                 nxt_conf_json_parse_error

[function] [call site] 00107


                 nxt_conf_json_parse_error

[function] [call site] 00108


                 nxt_mp_get

[function] [call site] 00109


                 nxt_conf_json_parse_string

[function] [call site] 00110


                   nxt_conf_json_parse_error

[function] [call site] 00111


                   nxt_conf_json_parse_error

[function] [call site] 00112


                   nxt_conf_json_parse_error

[function] [call site] 00113


                   nxt_conf_json_parse_error

[function] [call site] 00114


                   nxt_conf_json_parse_error

[function] [call site] 00115


                   nxt_mp_nget

[function] [call site] 00116


                     nxt_mp_get_small

[function] [call site] 00117


                     nxt_mp_alloc_large

[function] [call site] 00118


                   nxt_conf_json_parse_error

[function] [call site] 00119


                   nxt_conf_json_parse_error

[function] [call site] 00120


                   nxt_utf8_encode

[function] [call site] 00121


                 nxt_conf_object_hash_add

[function] [call site] 00122


                   nxt_conf_get_string

[function] [call site] 00123


                   nxt_djb_hash

[function] [call site] 00124


                   nxt_lvlhsh_insert

[function] [call site] 00125


                     nxt_lvlhsh_bucket_insert

[function] [call site] 00126


                       nxt_lvlhsh_convert_bucket_to_level

[function] [call site] 00127


                         nxt_lvlhsh_level_convertion_insert

[function] [call site] 00128


                           nxt_lvlhsh_new_bucket

[function] [call site] 00129


                           nxt_lvlhsh_bucket_convertion_insert

[function] [call site] 00130


                             nxt_lvlhsh_convert_bucket_to_level

[function] [call site] 00131


                               nxt_lvlhsh_free_level

[function] [call site] 00132


                             nxt_lvlhsh_level_insert

[function] [call site] 00133


                               nxt_lvlhsh_bucket_insert

[function] [call site] 00134


                                 nxt_lvlhsh_level_insert

[function] [call site] 00135


                                   nxt_lvlhsh_level_insert

[function] [call site] 00136


                                     nxt_lvlhsh_new_bucket

[function] [call site] 00137


                                 nxt_lvlhsh_new_bucket

[function] [call site] 00138


                             nxt_lvlhsh_new_bucket

[function] [call site] 00139


                     nxt_lvlhsh_level_insert

[function] [call site] 00140


                     nxt_lvlhsh_new_bucket

[function] [call site] 00141


                 nxt_conf_json_parse_error

[function] [call site] 00142


                 nxt_conf_json_skip_space

[function] [call site] 00143


                 nxt_conf_json_parse_error

[function] [call site] 00144


                 nxt_conf_json_parse_error

[function] [call site] 00145


                 nxt_conf_json_skip_space

[function] [call site] 00146


                 nxt_conf_json_parse_error

[function] [call site] 00147


                 nxt_conf_json_parse_value

[function] [call site] 00148


                   nxt_conf_json_parse_array

[function] [call site] 00149


                     nxt_mp_create

[function] [call site] 00150


                     nxt_list_create

[function] [call site] 00151


                       nxt_mp_get

[function] [call site] 00152


                     nxt_conf_json_skip_space

[function] [call site] 00153


                     nxt_conf_json_parse_error

[function] [call site] 00154


                     nxt_list_add

[function] [call site] 00155


                       nxt_mp_get

[function] [call site] 00156


                     nxt_conf_json_parse_value

[function] [call site] 00157


                       nxt_conf_json_parse_string

[function] [call site] 00158


                       memcmp

[call site] 00159


                       memcmp

[call site] 00160


                       memcmp

[call site] 00161


                       nxt_conf_json_parse_number

[function] [call site] 00162


                         nxt_conf_json_parse_error

[function] [call site] 00163


                         nxt_conf_json_parse_error

[function] [call site] 00164


                         nxt_conf_json_parse_error

[function] [call site] 00165


                         nxt_conf_json_parse_error

[function] [call site] 00166


                         __errno_location

[call site] 00167


                         strtod

[call site] 00168


                         __errno_location

[call site] 00169


                         nxt_conf_json_parse_error

[function] [call site] 00170


                         __errno_location

[call site] 00171


                       nxt_conf_json_parse_error

[function] [call site] 00172


                     nxt_conf_json_skip_space

[function] [call site] 00173


                     nxt_conf_json_parse_error

[function] [call site] 00174


                     nxt_conf_json_parse_error

[function] [call site] 00175


                     nxt_mp_get

[function] [call site] 00176


                     nxt_mp_destroy

[function] [call site] 00177


                       nxt_thread_tid

[function] [call site] 00178


                       raise

[call site] 00179


                       nxt_rbtree_destroy_next

[function] [call site] 00180


                       nxt_free

[function] [call site] 00181


                       nxt_free

[function] [call site] 00182


                       nxt_free

[function] [call site] 00183


                     nxt_mp_destroy

[function] [call site] 00184


                 nxt_conf_json_skip_space

[function] [call site] 00185


                 nxt_conf_json_parse_error

[function] [call site] 00186


                 nxt_conf_json_parse_error

[function] [call site] 00187


                 nxt_mp_get

[function] [call site] 00188


                 nxt_lvlhsh_each

[function] [call site] 00189


                   nxt_lvlhsh_bucket_each

[function] [call site] 00190


                   nxt_lvlhsh_level_each

[function] [call site] 00191


                     nxt_lvlhsh_bucket_each

[function] [call site] 00192


                     nxt_lvlhsh_level_each

[function] [call site] 00193


                 nxt_mp_destroy

[function] [call site] 00194


                 nxt_mp_destroy

[function] [call site] 00195


             nxt_conf_json_skip_space

[function] [call site] 00196


             nxt_conf_json_parse_error

[function] [call site] 00197


           nxt_mp_destroy

[function] [call site] 00198