Re: (ITS#5022) ldappasswd crash consumer slapd with some loglevels

[gao@schrodinger.com]

Pierangelo Masarati wrote:
>
>> I would expect writing less log should help avoiding problem. In this
>> case, somehow logging must be set at certain or above a level. Below
>> that it will trigger problem. While I was trying to get pieces working,
>> I always set loglevel to 1 or -1. So I did not realize this problem
>> until very late. The error I got as a result of attempting change
>> password is "can't contact LDAP server" which is very confusing (might
>> be because slapd already crashed before serving last request).
>>
>> I am happy to run more tests and provide further information as needed.
>>     
>
> If slapd crashes, the only really useful info is a core dump, as
> indicated in the FAQ I already pointed you to (that's basically why I
> pointed you there: there's no point in always repeating instructions for
> bug tracing, that's what the FAQ is intended for; apparently, it's
> totally ignored).
>
>   
Adding one more information, the loglevel is 256 when the slapd crashed.

Command used:
ldappasswd -v -H ldap://ldap2.example.com -D
"uid=user,ou=people,dc=example,dc=com" -W -S -x -A

Coredump:
=====================================================================
# gdb /tmp/debug/usr/lib/openldap/slapd
GNU gdb 6.6
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GDB is free software, covered by the GNU General Public License, and you are
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Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu"...
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) run -d 0 -u ldap -g ldap -h 'ldap:// ldaps://'
Starting program: /tmp/debug/usr/lib/openldap/slapd -d 0 -u ldap -g ldap
-h 'ldap:// ldaps://'
[Thread debugging using libthread_db enabled]
[New Thread -1213843792 (LWP 7706)]
[New Thread -1240826992 (LWP 7709)]
[New Thread -1249219696 (LWP 7710)]
[New Thread -1257612400 (LWP 7711)]
slapd: result.c:364: send_ldap_response: Assertion `rs->sr_err != 0x0a'
failed.

Program received signal SIGABRT, Aborted.
[Switching to Thread -1249219696 (LWP 7710)]
0xbfffe402 in __kernel_vsyscall ()
(gdb) bt full
#0  0xbfffe402 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7a8d429 in raise () from /lib/libc.so.6
No symbol table info available.
#2  0xb7a8e9d1 in abort () from /lib/libc.so.6
No symbol table info available.
#3  0xb7a86e51 in __assert_fail () from /lib/libc.so.6
No symbol table info available.
#4  0x080809c5 in send_ldap_response ()
No symbol table info available.
#5  0x0000000a in ?? ()
No symbol table info available.
#6  0x08150731 in ?? ()
No symbol table info available.
#7  0x08150731 in ?? ()
No symbol table info available.
#8  0xb58a61b4 in ?? ()
No symbol table info available.
#9  0xb58a5cac in ?? ()
No symbol table info available.
#10 0x00000000 in ?? ()
No symbol table info available.
===================================================================

Simon