Cannot retrieve display name from KRB_AP_REQ

[Zogoo]

I'm getting following error when I write a simple test with existing (actual) SPNEGO token from AD "Negotiete YIIGUAYGKwYBBQUCoIIGRDCCBkCgMDAuBgkqhk ....".

And it's working when I do some test with on time response from AD it's taking display name.

If I understand correctly gss_display_name should return Kerberos AP_REQ's cname (PrincipalName) right? Or gssapi on C doing some extra request over TCP to Client (Windows Client)?

How I sure that gss_display_name always be in response?

'Read cred form keytab: true
Traceback (most recent call last):
1: from test/gssapi_test.rb:25:in <main>' /Users/user/.gem/gems/gssapi-1.3.0/lib/gssapi/simple.rb:191:in display_name': gss_display_name did not return GSS_S_COMPLETE but 131072: An invalid name was supplied (GSSAPI::GssApiError)
unknown mech-code 0 for mech unknown
/Users/user/.gem/gems/gssapi-1.3.0/lib/gssapi/lib_gssapi.rb:182: [BUG] Segmentation fault at 0x0000000000000000
ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-darwin18]

-- Crash Report log information --------------------------------------------
See Crash Report log file under the one of following:
* ~/Library/Logs/DiagnosticReports
* /Library/Logs/DiagnosticReports
for more details.
Don't forget to include the above Crash Report log file in bug reports.

-- Control frame information -----------------------------------------------
c:0006 p:---- s:0032 e:000031 CFUNC :gss_delete_sec_context
c:0005 p:0039 s:0025 e:000024 METHOD /Users/user/.gem/gems/gssapi-1.3.0/lib/gssapi/lib_gssapi.rb:182
c:0004 p:0094 s:0018 e:000017 METHOD /Users/user/.gem/gems/gssapi-1.3.0/lib/gssapi/lib_gssapi.rb:165
c:0003 p:0008 s:0013 e:000012 METHOD /Users/user/.gem/gems/ffi-1.11.1/lib/ffi/autopointer.rb:162
c:0002 p:0017 s:0008 e:000007 METHOD /Users/user/.gem/gems/ffi-1.11.1/lib/ffi/autopointer.rb:150 [FINISH]
c:0001 p:0000 s:0003 E:0010a0 (none) [FINISH]

-- Ruby level backtrace information ----------------------------------------
/Users/user/.gem/gems/ffi-1.11.1/lib/ffi/autopointer.rb:150:in call' /Users/user/.gem/gems/ffi-1.11.1/lib/ffi/autopointer.rb:162:in release'
/Users/user/.gem/gems/gssapi-1.3.0/lib/gssapi/lib_gssapi.rb:165:in release' /Users/user/.gem/gems/gssapi-1.3.0/lib/gssapi/lib_gssapi.rb:182:in release_ptr'
/Users/user/.gem/gems/gssapi-1.3.0/lib/gssapi/lib_gssapi.rb:182:in `gss_delete_sec_context'

-- Machine register context ------------------------------------------------
rax: 0x0000000000000000 rbx: 0x00007feafae7a498 rcx: 0x000000010b14e8a9
rdx: 0x0000000000000000 rdi: 0x42dec92a00000006 rsi: 0x00007feafae7a498
rbp: 0x00007ffee4c209c0 rsp: 0x00007ffee4c209c0 r8: 0x0000000000000000
r9: 0x00007feafa028190 r10: 0x0000000000000000 r11: 0x00007fff42dc6fb1
r12: 0x00007feafae43850 r13: 0x00007ffee4c20bc0 r14: 0x00007ffee4c209fc
r15: 0x0000000000000000 rip: 0x00007fff4072a75f rfl: 0x0000000000010246

-- C level backtrace information -------------------------------------------
0 ruby 0x000000010b1dc197 rb_vm_bugreport + 135
1 ruby 0x000000010b0534b3 rb_bug_context + 467
2 ruby 0x000000010b14a701 sigsegv + 81
3 libsystem_platform.dylib 0x00007fff6c871b5d _sigtramp + 29
4 CoreFoundation 0x00007fff4072a75f CFRelease + 15
5 GSS 0x00007fff42dc6e35 gss_release_cred + 26
6 GSS 0x00007fff42dc6ffb gss_delete_sec_context + 74
7 ffi_c.bundle 0x000000010b518e7d ffi_call_unix64 + 85
8 ffi_c.bundle 0x000000010b51805b ffi_call_int + 1195
9 ffi_c.bundle 0x000000010b517ba6 ffi_call + 102
10 ffi_c.bundle 0x000000010b50c66e rbffi_CallFunction + 222
11 ffi_c.bundle 0x000000010b510299 custom_trampoline + 25
12 ruby 0x000000010b1cec87 vm_call_cfunc + 295
13 ruby 0x000000010b1b6dc3 vm_exec_core + 12419
14 ruby 0x000000010b1c9310 vm_exec + 144
15 ruby 0x000000010b1c32bd rb_check_funcall_default + 349
16 ruby 0x000000010b079d1a run_finalizer + 234
17 ruby 0x000000010b06c7a6 rb_gc_call_finalizer_at_exit + 614
18 ruby 0x000000010b05d2ce ruby_cleanup + 606
19 ruby 0x000000010b05d46f ruby_run_node + 63
20 ruby 0x000000010afded0f main + 79

-- Other runtime information -----------------------------------------------

• Loaded script: test/gssapi_test.rb

• Loaded features:

  0 enumerator.so
  1 thread.rb
  2 rational.so
  3 complex.so
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  180 /Users/user/.gem/gems/byebug-11.0.1/lib/byebug/commands/thread/switch.rb
  181 /Users/user/.gem/gems/byebug-11.0.1/lib/byebug/commands/thread.rb
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  254 /Users/user/.gem/gems/byebug-11.0.1/lib/byebug/settings/autoirb.rb
  255 /Users/user/.gem/gems/byebug-11.0.1/lib/byebug/settings/linetrace.rb
  256 /Users/user/.gem/gems/byebug-11.0.1/lib/byebug/core.rb

[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html

[IMPORTANT]
Don't forget to include the Crash Report log file under
DiagnosticReports directory in bug reports.

Abort trap: 6'