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 ['explicit_bzero']	2	4	k5_buf_free	call site: 00055	/src/krb5/src/util/support/k5buf.c:271
0	11	1 : View List ['k5_buf_free']	0	11	k5_utf16le_to_utf8	call site: 00050	/src/krb5/src/util/support/utf8_conv.c:191
0	2	1 : View List ['set_error']	2	4	ensure_space	call site: 00044	/src/krb5/src/util/support/k5buf.c:90
0	2	1 : View List ['set_error']	0	2	k5_buf_init_dynamic	call site: 00033	/src/krb5/src/util/support/k5buf.c:129
0	0	None	2	4	ensure_space	call site: 00043	/src/krb5/src/util/support/k5buf.c:78
0	0	None	2	4	ensure_space	call site: 00044	/src/krb5/src/util/support/k5buf.c:83
0	0	None	0	11	k5_utf8_to_utf16le	call site: 00067	/src/krb5/src/util/support/utf8_conv.c:109
0	0	None	0	11	k5_utf8_to_utf16le	call site: 00067	/src/krb5/src/util/support/utf8_conv.c:117
0	0	None	0	4	ndr_dec_delegation_info	call site: 00061	/src/krb5/src/tests/fuzzing/./../../kdc/ndr.c:207
0	0	None	0	2	k5_buf_add_len	call site: 00082	/src/krb5/src/util/support/k5buf.c:153
0	0	None	0	2	k5_buf_cstring	call site: 00052	/src/krb5/src/util/support/k5buf.c:235
0	0	None	0	2	k5_buf_get_space	call site: 00043	/src/krb5/src/util/support/k5buf.c:244

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           empty_data

[function] [call site] 00001


             make_data

[function] [call site] 00002


           make_data

[function] [call site] 00003


           ndr_dec_delegation_info

[function] [call site] 00004


             k5alloc

[function] [call site] 00005


               k5calloc

[function] [call site] 00006


                 calloc

[call site] 00007


             k5_input_init

[function] [call site] 00008


             k5_input_get_byte

[function] [call site] 00009


               k5_input_get_bytes

[function] [call site] 00010


                 k5_input_set_status

[function] [call site] 00011


             k5_input_get_byte

[function] [call site] 00012


             k5_input_get_uint16_le

[function] [call site] 00013


               k5_input_get_bytes

[function] [call site] 00014


               load_16_le

[function] [call site] 00015


             k5_input_get_uint32_le

[function] [call site] 00016


               k5_input_get_bytes

[function] [call site] 00017


               load_32_le

[function] [call site] 00018


             k5_input_get_uint32_le

[function] [call site] 00019


             k5_input_get_uint32_le

[function] [call site] 00020


             k5_input_get_uint32_le

[function] [call site] 00021


             k5_input_get_uint16_le

[function] [call site] 00022


             k5_input_get_uint16_le

[function] [call site] 00023


             k5_input_get_uint32_le

[function] [call site] 00024


             k5_input_get_uint32_le

[function] [call site] 00025


             k5_input_get_uint32_le

[function] [call site] 00026


             dec_wchar_pointer

[function] [call site] 00027


               k5_input_get_uint32_le

[function] [call site] 00028


               k5_input_get_uint32_le

[function] [call site] 00029


               k5_input_get_uint32_le

[function] [call site] 00030


               k5_input_get_bytes

[function] [call site] 00031


               k5_utf16le_to_utf8

[function] [call site] 00032


                 k5_buf_init_dynamic

[function] [call site] 00033


                   set_error

[function] [call site] 00034


                 k5_input_init

[function] [call site] 00035


                 k5_input_get_uint16_le

[function] [call site] 00036


                   k5_input_get_bytes

[function] [call site] 00037


                     k5_input_set_status

[function] [call site] 00038


                   load_16_le

[function] [call site] 00039


                 k5_input_get_uint16_le

[function] [call site] 00040


                 krb5int_ucs4_to_utf8

[function] [call site] 00041


                 k5_buf_get_space

[function] [call site] 00042


                   ensure_space

[function] [call site] 00043


                     __assert_fail

[call site] 00044


                     explicit_bzero

[call site] 00045


                     realloc

[call site] 00046


                     explicit_bzero

[call site] 00047


                     set_error

[function] [call site] 00048


                   endptr

[function] [call site] 00049


                 krb5int_ucs4_to_utf8

[function] [call site] 00050


                 k5_buf_cstring

[function] [call site] 00051


                   ensure_space

[function] [call site] 00052


                   endptr

[function] [call site] 00053


                 k5_buf_free

[function] [call site] 00054


                   __assert_fail

[call site] 00055


                   explicit_bzero

[call site] 00056


                   set_error

[function] [call site] 00057


               k5_input_get_uint16_le

[function] [call site] 00058


             k5_input_get_uint32_le

[function] [call site] 00059


             k5_input_get_bytes

[function] [call site] 00060


             k5calloc

[function] [call site] 00061


             dec_wchar_pointer

[function] [call site] 00062


             ndr_free_delegation_info

[function] [call site] 00063


           ndr_enc_delegation_info

[function] [call site] 00064


             enc_wchar_pointer

[function] [call site] 00065


               k5_utf8_to_utf16le

[function] [call site] 00066


                 k5_buf_init_dynamic_zap

[function] [call site] 00067


                   k5_buf_init_dynamic

[function] [call site] 00068


                 k5_buf_add_uint16_le

[function] [call site] 00069


                   k5_buf_get_space

[function] [call site] 00070


                   store_16_le

[function] [call site] 00071


                 k5_buf_add_uint16_le

[function] [call site] 00072


                 k5_buf_add_uint16_le

[function] [call site] 00073


                 k5_buf_free

[function] [call site] 00074


               k5_buf_init_dynamic

[function] [call site] 00075


               k5_buf_add_uint32_le

[function] [call site] 00076


                 k5_buf_get_space

[function] [call site] 00077


                 store_32_le

[function] [call site] 00078


               k5_buf_add_uint32_le

[function] [call site] 00079


               k5_buf_add_uint32_le

[function] [call site] 00080


               k5_buf_add_len

[function] [call site] 00081


                 ensure_space

[function] [call site] 00082


                 endptr

[function] [call site] 00083


               k5_buf_add_uint16_le

[function] [call site] 00084


                 store_16_le

[function] [call site] 00085


               k5_buf_status

[function] [call site] 00086


             k5calloc

[function] [call site] 00087


             k5_buf_init_dynamic

[function] [call site] 00088


             k5_buf_add_len

[function] [call site] 00089


             k5_buf_add_uint32_le

[function] [call site] 00090


             k5_buf_add_uint32_le

[function] [call site] 00091


             k5_buf_add_uint32_le

[function] [call site] 00092


             write_ptr

[function] [call site] 00093


               k5_buf_add_uint32_le

[function] [call site] 00094


             k5_buf_add_uint16_le

[function] [call site] 00095


             k5_buf_add_uint16_le

[function] [call site] 00096


             write_ptr

[function] [call site] 00097


             k5_buf_add_uint32_le

[function] [call site] 00098


             write_ptr

[function] [call site] 00099


             k5_buf_add_len

[function] [call site] 00100


             k5_buf_add_uint32_le

[function] [call site] 00101


             enc_wchar_pointer

[function] [call site] 00102


             k5_buf_add_uint16_le

[function] [call site] 00103


             k5_buf_add_uint16_le

[function] [call site] 00104


             write_ptr

[function] [call site] 00105


             k5_buf_add_len

[function] [call site] 00106


             k5_buf_add_uint32_le

[function] [call site] 00107


             store_32_le

[function] [call site] 00108


             k5_buf_status

[function] [call site] 00109


             make_data

[function] [call site] 00110


           ndr_free_delegation_info

[function] [call site] 00111


           krb5_free_data_contents

[function] [call site] 00112