Re: syncrepl segfaulting entry_free() (ITS#3015)

[jongchoi@OpenLDAP.org]

I committed a fix to HEAD. 

----- Original Message ----- 
From: <rhafer@suse.de>
To: <openldap-its@OpenLDAP.org>
Sent: Wednesday, March 10, 2004 11:37 AM
Subject: syncrepl segfaulting entry_free() (ITS#3015)


> Full_Name: Ralf Haferkamp
> Version: 2.2.6
> OS: 
> URL: ftp://ftp.openldap.org/incoming/
> Submission from: (NULL) (212.95.109.20)
> 
> 
> While evaluation syncrepl, the slave slapd segfaulted. I was able to produce the
> following backtrace:
> 
> #0  0x403cd7b9 in free () from /lib/libc.so.6
> (gdb) bt
> #0  0x403cd7b9 in free () from /lib/libc.so.6
> #1  0x40059e0d in ber_memfree_x (p=Variable "p" is not available.
> ) at memory.c:153
> #2  0x08073bf2 in ch_free (ptr=0x31646461) at ch_malloc.c:159
> #3  0x08068b19 in entry_free (e=0x8154520) at entry.c:409
> #4  0x08099d5b in do_syncrepl (ctx=0xbf5ff954, arg=0x814e450) at syncrepl.c:524
> #5  0x400243e9 in ldap_int_thread_pool_wrapper (xpool=Variable "xpool" is not
> available.
> ) at tpool.c:467
> #6  0x4030e1c1 in pthread_start_thread () from /lib/libpthread.so.0
> #7  0x404392ba in clone () from /lib/libc.so.6
> 
> The slave's syncrepl-config looks like this:
> syncrepl rid=9
>          provider=ldap://192.168.1.42
>          type=refreshAndPersist
>          searchbase="dc=suse,dc=de"
>          updatedn="cn=syncrep,dc=suse,dc=de"
>          bindmethod="simple"
>          binddn="cn=Manager,dc=suse,dc=de"
>          credentials="secret"
> 
> The segfault happend when I was hitting the master with a simple testcase using
> the slapd-tester programm with two do_add-files each adding/deleting a simple
> user entry. No clients were accessing the slave. The last few lines of the
> logfile log like this (logging everything but ACL-processing)
> ====> bdb_cache_delete( 9 )
> bdb_delete: deleted id=00000009 dn="uid=testadd1,ou=people,dc=suse,dc=de"
> send_ldap_result: conn=4294967295 op=0 p=0
> send_ldap_result: err=0 matched="" text=""
> bdb_modify: cn=syncrepl9,dc=suse,dc=de
> bdb_dn2entry("cn=syncrepl9,dc=suse,dc=de")
> bdb_modify_internal: 0x00000006: cn=syncrepl9,dc=suse,dc=de
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> bdb_modify_internal: replace
> => key_change(DELETE,6)
> bdb_idl_delete_key: 6 [0096defd]
> <= key_change 0
> => key_change(DELETE,6)
> bdb_idl_delete_key: 6 [65d02a87]
> <= key_change 0
> => key_change(DELETE,6)
> bdb_idl_delete_key: 6 [a0ccd171]
> <= key_change 0
> => key_change(ADD,6)
> bdb_idl_insert_key: 6 [0096defd]
> <= key_change 0
> => key_change(ADD,6)
> bdb_idl_insert_key: 6 [65d02a87]
> <= key_change 0
> => key_change(ADD,6)
> bdb_idl_insert_key: 6 [a0ccd171]
> <= key_change 0
> => entry_encode(0x00000006): cn=syncrepl9,dc=suse,dc=de
> bdb_modify: updated id=00000006 dn="cn=syncrepl9,dc=suse,dc=de"
> send_ldap_result: conn=4294967295 op=0 p=0
> send_ldap_result: err=0 matched="" text=""
> 
> 
> 
>