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: 00130	/src/krb5/src/util/support/k5buf.c:271
0	7	2 : View List ['krb5_free_principal', 'k5_input_set_status']	0	7	unmarshal_princ	call site: 00018	/src/krb5/src/lib/krb5/ccache/ccmarshal.c:181
0	2	1 : View List ['k5_input_set_status']	0	2	get_len_bytes	call site: 00023	/src/krb5/src/lib/krb5/ccache/ccmarshal.c:138
0	2	1 : View List ['k5_input_set_status']	0	2	unmarshal_addrs	call site: 00054	/src/krb5/src/lib/krb5/ccache/ccmarshal.c:237
0	2	1 : View List ['k5_input_set_status']	0	2	unmarshal_addr	call site: 00057	/src/krb5/src/lib/krb5/ccache/ccmarshal.c:215
0	2	1 : View List ['k5_input_set_status']	0	2	unmarshal_authdata	call site: 00064	/src/krb5/src/lib/krb5/ccache/ccmarshal.c:275
0	2	1 : View List ['k5_input_set_status']	0	2	unmarshal_authdatum	call site: 00067	/src/krb5/src/lib/krb5/ccache/ccmarshal.c:252
0	2	1 : View List ['set_error']	0	2	k5_buf_init_dynamic	call site: 00082	/src/krb5/src/util/support/k5buf.c:129
0	0	1 : View List ['malloc']	4	6	ensure_space	call site: 00092	/src/krb5/src/util/support/k5buf.c:87
0	0	None	2	4	ensure_space	call site: 00091	/src/krb5/src/util/support/k5buf.c:78
0	0	None	2	4	ensure_space	call site: 00092	/src/krb5/src/util/support/k5buf.c:83
0	0	None	0	2	unmarshal_princ	call site: 00004	/src/krb5/src/lib/krb5/ccache/ccmarshal.c:164

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           k5_unmarshal_cred

[function] [call site] 00001


             k5_input_init

[function] [call site] 00002


             unmarshal_princ

[function] [call site] 00003


               k5alloc

[function] [call site] 00004


                 k5calloc

[function] [call site] 00005


                   calloc

[call site] 00006


               k5_input_set_status

[function] [call site] 00007


               get32

[function] [call site] 00008


                 k5_input_get_uint32_n

[function] [call site] 00009


                   k5_input_get_bytes

[function] [call site] 00010


                     k5_input_set_status

[function] [call site] 00011


                   load_32_n

[function] [call site] 00012


                 k5_input_get_uint32_be

[function] [call site] 00013


                   k5_input_get_bytes

[function] [call site] 00014


                   load_32_be

[function] [call site] 00015


                     __bswap_32

[function] [call site] 00016


               get32

[function] [call site] 00017


               k5calloc

[function] [call site] 00018


               get_data

[function] [call site] 00019


                 get_len_bytes

[function] [call site] 00020


                   get32

[function] [call site] 00021


                   k5_input_get_bytes

[function] [call site] 00022


                   k5memdup0

[function] [call site] 00023


                     k5alloc

[function] [call site] 00024


                   k5_input_set_status

[function] [call site] 00025


                 empty_data

[function] [call site] 00026


                   make_data

[function] [call site] 00027


                 make_data

[function] [call site] 00028


               get_data

[function] [call site] 00029


               k5_input_set_status

[function] [call site] 00030


               krb5_free_principal

[function] [call site] 00031


             unmarshal_princ

[function] [call site] 00032


             unmarshal_keyblock

[function] [call site] 00033


               get16

[function] [call site] 00034


                 k5_input_get_uint16_n

[function] [call site] 00035


                   k5_input_get_bytes

[function] [call site] 00036


                   load_16_n

[function] [call site] 00037


                 k5_input_get_uint16_be

[function] [call site] 00038


                   k5_input_get_bytes

[function] [call site] 00039


                   load_16_be

[function] [call site] 00040


                     __bswap_16

[function] [call site] 00041


               get16

[function] [call site] 00042


               get_len_bytes

[function] [call site] 00043


             get32

[function] [call site] 00044


             get32

[function] [call site] 00045


             get32

[function] [call site] 00046


             get32

[function] [call site] 00047


             k5_input_get_byte

[function] [call site] 00048


               k5_input_get_bytes

[function] [call site] 00049


             get32

[function] [call site] 00050


             unmarshal_addrs

[function] [call site] 00051


               get32

[function] [call site] 00052


               k5_input_set_status

[function] [call site] 00053


               calloc

[call site] 00054


               k5_input_set_status

[function] [call site] 00055


               unmarshal_addr

[function] [call site] 00056


                 calloc

[call site] 00057


                 k5_input_set_status

[function] [call site] 00058


                 get16

[function] [call site] 00059


                 get_len_bytes

[function] [call site] 00060


             unmarshal_authdata

[function] [call site] 00061


               get32

[function] [call site] 00062


               k5_input_set_status

[function] [call site] 00063


               calloc

[call site] 00064


               k5_input_set_status

[function] [call site] 00065


               unmarshal_authdatum

[function] [call site] 00066


                 calloc

[call site] 00067


                 k5_input_set_status

[function] [call site] 00068


                 get16

[function] [call site] 00069


                 get_len_bytes

[function] [call site] 00070


             get_data

[function] [call site] 00071


             get_data

[function] [call site] 00072


             krb5_free_cred_contents

[function] [call site] 00073


               krb5_free_principal

[function] [call site] 00074


               krb5_free_principal

[function] [call site] 00075


               krb5_free_keyblock_contents

[function] [call site] 00076


                 krb5int_c_free_keyblock_contents

[function] [call site] 00077


                   zapfree

[function] [call site] 00078


                     explicit_bzero

[call site] 00079


               krb5_free_addresses

[function] [call site] 00080


               krb5_free_authdata

[function] [call site] 00081


           k5_buf_init_dynamic

[function] [call site] 00082


             set_error

[function] [call site] 00083


           k5_marshal_cred

[function] [call site] 00084


             k5_marshal_princ

[function] [call site] 00085


               put32

[function] [call site] 00086


                 store_32_n

[function] [call site] 00087


                 store_32_be

[function] [call site] 00088


                   __bswap_32

[function] [call site] 00089


                 k5_buf_add_len

[function] [call site] 00090


                   ensure_space

[function] [call site] 00091


                     __assert_fail

[call site] 00092


                     explicit_bzero

[call site] 00093


                     realloc

[call site] 00094


                     explicit_bzero

[call site] 00095


                     set_error

[function] [call site] 00096


                   endptr

[function] [call site] 00097


               put32

[function] [call site] 00098


               put_data

[function] [call site] 00099


                 put_len_bytes

[function] [call site] 00100


                   put32

[function] [call site] 00101


                   k5_buf_add_len

[function] [call site] 00102


               put_data

[function] [call site] 00103


             k5_marshal_princ

[function] [call site] 00104


             marshal_keyblock

[function] [call site] 00105


               put16

[function] [call site] 00106


                 store_16_n

[function] [call site] 00107


                 store_16_be

[function] [call site] 00108


                   __bswap_16

[function] [call site] 00109


                 k5_buf_add_len

[function] [call site] 00110


               put16

[function] [call site] 00111


               put_len_bytes

[function] [call site] 00112


             put32

[function] [call site] 00113


             put32

[function] [call site] 00114


             put32

[function] [call site] 00115


             put32

[function] [call site] 00116


             k5_buf_add_len

[function] [call site] 00117


             put32

[function] [call site] 00118


             marshal_addrs

[function] [call site] 00119


               put32

[function] [call site] 00120


               put16

[function] [call site] 00121


               put_len_bytes

[function] [call site] 00122


             marshal_authdata

[function] [call site] 00123


               put32

[function] [call site] 00124


               put16

[function] [call site] 00125


               put_len_bytes

[function] [call site] 00126


             put_data

[function] [call site] 00127


             put_data

[function] [call site] 00128


           k5_buf_free

[function] [call site] 00129


             __assert_fail

[call site] 00130


             explicit_bzero

[call site] 00131


             set_error

[function] [call site] 00132


           krb5_free_cred_contents

[function] [call site] 00133