Public bug reported:

Reproduce steps:
1. Configure keystone with ldap
2. Send concurrency request to keystone which also calling out to backend LDAP 
server, like executing "for i in {1,2,3,4,5}; do openstack user list --domain 
<ldap domain>; done" concurrently in 2 client.

Error message
Fatal Python error: saving thread twice?
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]: Thread 
0x00007f0ed0db4700 (most recent call first):
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 315 in _ldap_call
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 758 in result4
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 751 in result3
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 446 in simple_bind_s
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 1204 in 
_apply_method_s
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 1222 in 
simple_bind_s
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 103 in 
simple_bind_s
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 230 in _bind
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 266 in 
_create_connector
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 325 in 
_get_connection
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 375 in connection
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/contextlib.py", line 112 in __enter__
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 772 in simple_bind_s
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 920 in simple_bind_s
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1261 in get_connection
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/core.py", 
line 70 in authenticate
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 902 in 
authenticate
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 424 in 
wrapper
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 414 in 
wrapper
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/notifications.py", line 570 in 
wrapper
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/auth/plugins/password.py", line 36 
in authenticate
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/api/_shared/authentication.py", line 
153 in authenticate
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/api/_shared/authentication.py", line 
186 in authenticate_for_token
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/api/auth.py", line 315 in post
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/server/flask/common.py", line 1066 
in wrapper
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask_restful/__init__.py", line 573 in 
dispatch_request
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/views.py", line 89 in view
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask_restful/__init__.py", line 458 in 
wrapper
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 1935 in dispatch_request
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 1949 in 
full_dispatch_request
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 2446 in wsgi_app
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/werkzeug/middleware/dispatcher.py", line 66 
in __call__
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/request.py", line 1278 in 
call_application
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/request.py", line 1314 in send
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystonemiddleware/auth_token/__init__.py", 
line 341 in __call__
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/dec.py", line 193 in call_func


Current thread 0x00007f0ecddae700 (most recent call first):
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 315 in _ldap_call
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 843 in search_ext
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 812 in search_ext
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1004 in _paged_search_s
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 952 in search_s
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1492 in _ldap_get
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1573 in get
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1888 in get
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/core.py", 
line 309 in get
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/core.py", 
line 81 in _get_user
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/core.py", 
line 108 in list_groups_for_user
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 1310 in 
list_groups_for_user
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 424 in 
wrapper
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 414 in 
wrapper
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/assignment/core.py", line 88 in 
_get_group_ids_for_user_id
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/assignment/core.py", line 851 in 
_list_effective_role_assignments
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/assignment/core.py", line 996 in 
list_role_assignments
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/assignment/core.py", line 129 in 
get_roles_for_user_and_project
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/cache/region.py", line 839 in 
gen_value
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/lock.py", line 179 in _enter_create
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/lock.py", line 93 in _enter
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/lock.py", line 186 in __enter__
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/cache/region.py", line 879 in 
get_or_create
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/cache/region.py", line 1272 in 
get_or_create_for_user_func
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"</usr/lib/python3.7/site-packages/decorator.py:decorator-gen-3>", line 2 in 
get_roles_for_user_and_project
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/models/token_model.py", line 403 in 
_get_project_roles
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/models/token_model.py", line 441 in 
roles
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/models/revoke_model.py", line 245 in 
build_token_values
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/token/provider.py", line 135 in 
check_revocation_v3
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/token/provider.py", line 139 in 
check_revocation
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/token/provider.py", line 201 in 
_is_valid_token
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/token/provider.py", line 148 in 
validate_token
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/rbac_enforcer/enforcer.py", 
line 256 in _extract_subject_token_target_data
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/rbac_enforcer/enforcer.py", 
line 414 in enforce_call
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/api/auth.py", line 285 in get
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask_restful/__init__.py", line 573 in 
dispatch_request
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/views.py", line 89 in view
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask_restful/__init__.py", line 458 in 
wrapper
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 1935 in dispatch_request
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 1949 in 
full_dispatch_request
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 2446 in wsgi_app
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/werkzeug/middleware/dispatcher.py", line 66 
in __call__
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/request.py", line 1278 in 
call_application
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/request.py", line 1314 in send
Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystonemiddleware/auth_token/__init__.py", 
line 341 in __call__

** Affects: keystone
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1904397

Title:
  keystone report "Fatal Python error: saving thread twice?"

Status in OpenStack Identity (keystone):
  New

Bug description:
  Reproduce steps:
  1. Configure keystone with ldap
  2. Send concurrency request to keystone which also calling out to backend 
LDAP server, like executing "for i in {1,2,3,4,5}; do openstack user list 
--domain <ldap domain>; done" concurrently in 2 client.

  Error message
  Fatal Python error: saving thread twice?
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]: Thread 
0x00007f0ed0db4700 (most recent call first):
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 315 in _ldap_call
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 758 in result4
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 751 in result3
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 446 in simple_bind_s
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 1204 in 
_apply_method_s
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 1222 in 
simple_bind_s
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 103 in 
simple_bind_s
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 230 in _bind
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 266 in 
_create_connector
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 325 in 
_get_connection
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldappool/__init__.py", line 375 in connection
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/contextlib.py", line 112 in __enter__
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 772 in simple_bind_s
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 920 in simple_bind_s
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1261 in get_connection
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/core.py", 
line 70 in authenticate
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 902 in 
authenticate
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 424 in 
wrapper
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 414 in 
wrapper
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/notifications.py", line 570 in 
wrapper
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/auth/plugins/password.py", line 36 
in authenticate
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/api/_shared/authentication.py", line 
153 in authenticate
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/api/_shared/authentication.py", line 
186 in authenticate_for_token
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/api/auth.py", line 315 in post
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/server/flask/common.py", line 1066 
in wrapper
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask_restful/__init__.py", line 573 in 
dispatch_request
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/views.py", line 89 in view
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask_restful/__init__.py", line 458 in 
wrapper
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 1935 in dispatch_request
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 1949 in 
full_dispatch_request
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 2446 in wsgi_app
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/werkzeug/middleware/dispatcher.py", line 66 
in __call__
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/request.py", line 1278 in 
call_application
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/request.py", line 1314 in send
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystonemiddleware/auth_token/__init__.py", 
line 341 in __call__
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/dec.py", line 193 in call_func

  
  Current thread 0x00007f0ecddae700 (most recent call first):
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 315 in _ldap_call
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/ldap/ldapobject.py", line 843 in search_ext
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 812 in search_ext
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1004 in _paged_search_s
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 952 in search_s
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1492 in _ldap_get
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1573 in get
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/common.py", 
line 1888 in get
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/core.py", 
line 309 in get
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/core.py", 
line 81 in _get_user
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/backends/ldap/core.py", 
line 108 in list_groups_for_user
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 1310 in 
list_groups_for_user
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 424 in 
wrapper
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/identity/core.py", line 414 in 
wrapper
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/assignment/core.py", line 88 in 
_get_group_ids_for_user_id
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/assignment/core.py", line 851 in 
_list_effective_role_assignments
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/assignment/core.py", line 996 in 
list_role_assignments
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/assignment/core.py", line 129 in 
get_roles_for_user_and_project
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/cache/region.py", line 839 in 
gen_value
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/lock.py", line 179 in _enter_create
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/lock.py", line 93 in _enter
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/lock.py", line 186 in __enter__
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/cache/region.py", line 879 in 
get_or_create
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/dogpile/cache/region.py", line 1272 in 
get_or_create_for_user_func
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"</usr/lib/python3.7/site-packages/decorator.py:decorator-gen-3>", line 2 in 
get_roles_for_user_and_project
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/models/token_model.py", line 403 in 
_get_project_roles
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/models/token_model.py", line 441 in 
roles
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/models/revoke_model.py", line 245 in 
build_token_values
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/token/provider.py", line 135 in 
check_revocation_v3
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/token/provider.py", line 139 in 
check_revocation
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/token/provider.py", line 201 in 
_is_valid_token
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/token/provider.py", line 148 in 
validate_token
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/manager.py", line 116 in 
wrapped
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/rbac_enforcer/enforcer.py", 
line 256 in _extract_subject_token_target_data
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/common/rbac_enforcer/enforcer.py", 
line 414 in enforce_call
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystone/api/auth.py", line 285 in get
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask_restful/__init__.py", line 573 in 
dispatch_request
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/views.py", line 89 in view
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask_restful/__init__.py", line 458 in 
wrapper
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 1935 in dispatch_request
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 1949 in 
full_dispatch_request
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/flask/app.py", line 2446 in wsgi_app
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/werkzeug/middleware/dispatcher.py", line 66 
in __call__
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/request.py", line 1278 in 
call_application
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/webob/request.py", line 1314 in send
  Nov 06 15:55:34 controller-cf9vqh2fp4 keystone-api[858]:   File 
"/usr/lib/python3.7/site-packages/keystonemiddleware/auth_token/__init__.py", 
line 341 in __call__

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