I found a memory leak in the Samba 3.0.2a while I was checking
some programs.
We can see the memory leak in source/libads/ldap.c.

ads_do_search_all() gets 1 paged results from LDAP from 1 call to
ads_do_paged_search(). If ads_do_search_all() gets more than
2 paged results, it joins those paged results.
Pages are added by ldap_add_result_entry() after fetching by
ads_next_entry(), but ads_next_entry() returns only a
LDAP_RES_SEARCH_ENTRY, so entries of different type are not freed.

I made the following patch.

However I think essentially that it is wrong to join some paged
results from LDAP to one paged results

===================================================================
diff -uNr samba-3.0.2a.orig/source/libads/ldap.c samba-
3.0.2a/source/libads/ldap.c
--- samba-3.0.2a.orig/source/libads/ldap.c	Wed Jan  7 06:08:40 2004
+++ samba-3.0.2a/source/libads/ldap.c	Mon Apr  5 19:38:17 2004
@@ -524,10 +524,10 @@
 		   that this works on all ldap libs, but I have only tested 
with openldap */
 		for (msg = ads_first_entry(ads, res2); msg; msg = next) {
 			next = ads_next_entry(ads, msg);
+			ldap_delete_result_entry((LDAPMessage **)&res2, 
msg);
 			ldap_add_result_entry((LDAPMessage **)res, msg);
 		}
-		/* note that we do not free res2, as the memory is now
-                   part of the main returned list */
+		ads_msgfree(ads, res2);
 	}
 
 	return status;
===================================================================