sssd crashes randomly with IPA backend

Issue

On RHEL 5.8, sssd crashes after a few queries, the crash is observed only when IPA used as the id_provider

Here is the back-trace from the crash.

#0  sysdb_attrs_get_el_int (attrs=0x160d66b0, name=0x43cdad "name", alloc=true, el=0x7fffc372caf8) at src/db/sysdb.c:255
#1  0x00000000004227c7 in sysdb_attrs_primary_name (sysdb=0x160970f0, attrs=0x160d66b0, ldap_attr=0x1609f990 "cn", _primary=0x7fffc372cb98) at src/db/sysdb.c:2441
#2  0x0000000000422efd in sysdb_attrs_primary_name_list (sysdb=0x160970f0, mem_ctx=<value optimized out>, attr_list=0x160d6650, attr_count=13, ldap_attr=0x1609f990 "cn", 
#3  0x00002b9f8a7809b6 in sdap_initgr_nested_get_membership_diff (state=0x160c8c70) at src/providers/ldap/sdap_async_accounts.c:3061
#4  sdap_initgr_store_group_memberships (state=0x160c8c70) at src/providers/ldap/sdap_async_accounts.c:2820
#5  0x00002b9f8a781c4b in sdap_initgr_nested_store (subreq=<value optimized out>) at src/providers/ldap/sdap_async_accounts.c:2742
#6  sdap_initgr_nested_search (subreq=<value optimized out>) at src/providers/ldap/sdap_async_accounts.c:2706
#7  0x00002b9f8a777dc7 in sdap_get_generic_done (op=<value optimized out>, reply=0x160c8540, error=<value optimized out>, pvt=<value optimized out>)
#8  0x00002b9f8a779d8f in sdap_process_message (ev=<value optimized out>, pvt=<value optimized out>) at src/providers/ldap/sdap_async.c:307
#9  sdap_process_result (ev=<value optimized out>, pvt=<value optimized out>) at src/providers/ldap/sdap_async.c:207
#10 0x0000003bee2034d3 in tevent_common_loop_timer_delay (ev=0x160819a0) at tevent_timed.c:254
#11 0x0000003bee20509b in std_event_loop_once (ev=0x160819a0, location=<value optimized out>) at tevent_standard.c:537
#12 0x0000003bee202690 in _tevent_loop_once (ev=0x160819a0, location=0x4441f5 "src/util/server.c:526") at tevent.c:490
#13 0x0000003bee2026fb in tevent_common_loop_wait (ev=0x160819a0, location=0x4441f5 "src/util/server.c:526") at tevent.c:591
#14 0x0000000000435d61 in server_loop (main_ctx=0x16082b10) at src/util/server.c:526
#15 0x000000000040efcf in main (argc=6, argv=0x7fffc372d448) at src/providers/data_provider_be.c:1333