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
65	132	5 : View List ['flb_log_check.133', 'flb_sds_increase', 'flb_sds_avail', 'flb_sds_len.134', 'flb_log_print']	65	132	flb_sds_printf	call site: 00063	/src/fluent-bit/src/flb_sds.c:365
65	65	2 : View List ['flb_pipe_write_all', 'perror']	65	65	flb_log_print	call site: 00012	/src/fluent-bit/src/flb_log.c:651
2	2	1 : View List ['flb_worker_log_level']	2	2	flb_log_check	call site: 00002	/src/fluent-bit/include/fluent-bit/flb_log.h:106
0	69	2 : View List ['flb_log_check', 'flb_log_print']	0	69	flb_fstore_file_append	call site: 00114	/src/fluent-bit/src/flb_fstore.c:290
0	69	2 : View List ['flb_log_check', 'flb_log_print']	0	69	flb_fstore_create	call site: 00004	/src/fluent-bit/src/flb_fstore.c:479
0	0	None	130	264	flb_sds_printf	call site: 00050	/src/fluent-bit/src/flb_sds.c:348
0	0	None	2	287	flb_fstore_create	call site: 00001	/src/fluent-bit/src/flb_fstore.c:472
0	0	None	2	205	flb_fstore_stream_create	call site: 00035	/src/fluent-bit/src/flb_fstore.c:332
0	0	None	2	136	flb_fstore_stream_create	call site: 00035	/src/fluent-bit/src/flb_fstore.c:350
0	0	None	2	71	flb_sds_create	call site: 00078	/src/fluent-bit/src/flb_sds.c:82
0	0	1 : View List ['cio_chunk_up_force']	0	138	flb_fstore_file_append	call site: 00112	/src/fluent-bit/src/flb_fstore.c:280
0	0	None	0	69	log_cb	call site: 00000	/src/fluent-bit/src/flb_fstore.c:30

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           flb_fstore_create

[function] [call site] 00001


             flb_log_check

[function] [call site] 00002


               flb_worker_log_level

[function] [call site] 00003


             flb_log_print

[function] [call site] 00004


               flb_log_construct

[function] [call site] 00005


                 isatty

[call site] 00006


                 time

[call site] 00007


                 localtime_r

[call site] 00008


                 snprintf

[call site] 00009


                 vsnprintf

[call site] 00010


                 strlen

[call site] 00011


               flb_worker_get

[function] [call site] 00012


               flb_pipe_write_all

[function] [call site] 00013


                 write

[call site] 00014


                 __errno_location

[call site] 00015


                 flb_time_msleep

[function] [call site] 00016


                   nanosleep

[call site] 00017


                 __errno_location

[call site] 00018


                 flb_errno_print

[function] [call site] 00019


                   __xpg_strerror_r

[call site] 00020


                   flb_log_check

[function] [call site] 00021


                   flb_log_print

[function] [call site] 00022


                     fprintf

[call site] 00023


                     perror

[call site] 00024


                     fprintf

[call site] 00025


             flb_log_check

[function] [call site] 00026


             flb_log_print

[function] [call site] 00027


             flb_calloc

[function] [call site] 00028


               flb_fuzz_get_probability

[function] [call site] 00029


               calloc

[call site] 00030


             __errno_location

[call site] 00031


             flb_errno_print

[function] [call site] 00032


             load_references

[function] [call site] 00033


               flb_fstore_stream_create

[function] [call site] 00034


                 strcmp

[call site] 00035


                 flb_log_check

[function] [call site] 00036


                 flb_log_print

[function] [call site] 00037


                 flb_calloc

[function] [call site] 00038


                 __errno_location

[call site] 00039


                 flb_errno_print

[function] [call site] 00040


                 flb_sds_create_size

[function] [call site] 00041


                   sds_alloc

[function] [call site] 00042


                     flb_malloc

[function] [call site] 00043


                       flb_fuzz_get_probability

[function] [call site] 00044


                     __errno_location

[call site] 00045


                     flb_errno_print

[function] [call site] 00046


                 flb_free

[function] [call site] 00047


                 flb_sds_printf

[function] [call site] 00048


                   strlen

[call site] 00049


                   flb_sds_avail

[function] [call site] 00050


                   flb_sds_avail

[function] [call site] 00051


                   flb_sds_increase

[function] [call site] 00052


                     flb_sds_alloc

[function] [call site] 00053


                     flb_realloc

[function] [call site] 00054


                       realloc

[call site] 00055


                     __errno_location

[call site] 00056


                     flb_errno_print

[function] [call site] 00057


                   flb_sds_len

[function] [call site] 00058


                   flb_sds_avail

[function] [call site] 00059


                   vsnprintf

[call site] 00060


                   flb_log_check

[function] [call site] 00061


                   flb_log_print

[function] [call site] 00062


                   flb_sds_avail

[function] [call site] 00063


                   flb_sds_avail

[function] [call site] 00064


                   flb_sds_increase

[function] [call site] 00065


                   flb_sds_len

[function] [call site] 00066


                   flb_sds_avail

[function] [call site] 00067


                   vsnprintf

[call site] 00068


                   flb_sds_avail

[function] [call site] 00069


                   flb_log_check

[function] [call site] 00070


                   flb_log_print

[function] [call site] 00071


               flb_log_check

[function] [call site] 00072


               flb_log_print

[function] [call site] 00073


               map_chunks

[function] [call site] 00074


                 flb_calloc

[function] [call site] 00075


                 __errno_location

[call site] 00076


                 flb_errno_print

[function] [call site] 00077


                 flb_sds_create

[function] [call site] 00078


                   strlen

[call site] 00079


                   flb_sds_create_len

[function] [call site] 00080


                     sds_alloc

[function] [call site] 00081


                 flb_free

[function] [call site] 00082


                 flb_log_check

[function] [call site] 00083


                 flb_log_print

[function] [call site] 00084


                 flb_fstore_file_meta_get

[function] [call site] 00085


                   flb_log_check

[function] [call site] 00086


                   flb_log_print

[function] [call site] 00087


                   flb_log_check

[function] [call site] 00088


                   flb_log_print

[function] [call site] 00089


                   meta_set

[function] [call site] 00090


                     flb_calloc

[function] [call site] 00091


                     __errno_location

[call site] 00092


                     flb_errno_print

[function] [call site] 00093


                     flb_log_check

[function] [call site] 00094


                     flb_log_print

[function] [call site] 00095


                     flb_free

[function] [call site] 00096


                   flb_free

[function] [call site] 00097


           flb_fstore_stream_create

[function] [call site] 00098


           flb_fstore_file_create

[function] [call site] 00099


             flb_calloc

[function] [call site] 00100


             __errno_location

[call site] 00101


             flb_errno_print

[function] [call site] 00102


             flb_sds_create

[function] [call site] 00103


             flb_log_check

[function] [call site] 00104


             flb_log_print

[function] [call site] 00105


             flb_free

[function] [call site] 00106


             flb_log_check

[function] [call site] 00107


             flb_log_print

[function] [call site] 00108


             flb_sds_destroy

[function] [call site] 00109


               flb_free

[function] [call site] 00110


             flb_free

[function] [call site] 00111


           flb_fstore_file_append

[function] [call site] 00112


             flb_log_check

[function] [call site] 00113


             flb_log_print

[function] [call site] 00114


             flb_log_check

[function] [call site] 00115


             flb_log_print

[function] [call site] 00116


           flb_fstore_file_content_copy

[function] [call site] 00117


           memcmp

[call site] 00118


           __assert_fail

[call site] 00119


           flb_free

[function] [call site] 00120


           flb_fstore_dump

[function] [call site] 00121


             printf

[call site] 00122


             printf

[call site] 00123


             printf

[call site] 00124


             printf

[call site] 00125


           flb_fstore_destroy

[function] [call site] 00126


             flb_fstore_file_inactive

[function] [call site] 00127


               flb_sds_destroy

[function] [call site] 00128


               flb_free

[function] [call site] 00129


               flb_free

[function] [call site] 00130


             flb_fstore_stream_destroy

[function] [call site] 00131


               flb_sds_destroy

[function] [call site] 00132


               flb_free

[function] [call site] 00133


             flb_free

[function] [call site] 00134