Bug 756783

Description of problem:

nss_ldap currently segfaults immediately after first query (probably) because of referencing already freed memory, this is (probably) caused by memory clean-up in biparse.patch. This issue has quite small priority (since it can be fixed easily - in the worst case, memory cleaning will be disable), but it has quite serious impact.

Version-Release number of selected component (if applicable):

nss_ldap-253-47.el5

How reproducible:

See comments.

Steps to Reproduce:

1. setup slapd with posixAccount ldapuser
2. setup nss_ldap to lookup configures LDAP server
3. getent -s 'passwd:ldap' passwd ldapuser
  
Actual results:

ldapuser1:*:1001:1000:ldapuser1:/home/ldapuser1:/bin/bash
*** glibc detected *** getent: free(): invalid pointer: 0x08376498 ***
======= Backtrace: =========
/lib/libc.so.6[0x5ec6d5]
/lib/libc.so.6(cfree+0x59)[0x5ecb19]
/lib/libnss_ldap.so.2[0xb51647]
/lib/libnss_ldap.so.2[0xb5167e]
/lib/libnss_ldap.so.2(_nss_ldap_db_close+0x18)[0xb516b8]
/lib/libnss_ldap.so.2(_nss_ldap_free_config+0x64)[0xb51734]
/lib/libnss_ldap.so.2(_nss_ldap_leave+0x47)[0xb49f97]
/lib/libnss_ldap.so.2(_nss_ldap_getent+0x6b)[0xb4a58b]
/lib/libnss_ldap.so.2(_nss_ldap_getpwent_r+0x58)[0xb4a9f8]
/lib/libc.so.6[0x66782e]
/lib/libc.so.6(getpwent_r+0xad)[0x613dfd]
/lib/libc.so.6[0x6673f6]
/lib/libc.so.6(getpwent+0x71)[0x613a61]
getent[0x804abbb]
getent[0x804a6c2]
/lib/libc.so.6(__libc_start_main+0xdc)[0x598eac]
getent[0x8049741]
======= Memory map: ========
...

Expected results:

ldapuser1:*:1001:1000:ldapuser1:/home/ldapuser1:/bin/bash

Additional info:

Reproducer will be added shortly.