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RE: slapd stopping with no error message
If there is anymore gdb commands I can do, please
let me know. Thanks!
-----Original Message-----
From: Douglas B. Jones [mailto:douglas@gpc.edu]
Sent: Friday, March 09, 2007 3:15 PM
To: Howard Chu
Cc: openldap-software@openldap.org; Aaron Richton; Douglas B Jones
Subject: RE: slapd stopping with no error message
Thanks, I did not think about them being stripped! I reran it with:
and got:
%gdb ./servers/slapd/slapd
(gdb)r -d 1 -u ldap3 -g ldap3 -h ldap://:389/ -l local6 -F \
/usr/local/openldap-2.3.34/etc/openldap
( output skipped)
>>> dnPrettyNormal: <>
<<< dnPrettyNormal: <>, <>
do_bind: version=3 dn="" method=128
send_ldap_result: conn=0 op=0 p=3
send_ldap_response: msgid=1 tag=97 err=0
ber_flush: 14 bytes to sd 34
do_bind: v3 anonymous bind
connection_get(34): got connid=0
connection_read(34): checking for input on id=0
ber_get_next
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 635632560 (LWP 14158)]
ber_get_next (sb=0x25efbfe8, len=0x25e2c27c, ber=0x2452cfd4) at io.c:551
551 if (*ber->ber_ptr & 0x80) { /* multi-byte */
(gdb) where
#0 ber_get_next (sb=0x25efbfe8, len=0x25e2c27c, ber=0x2452cfd4) at io.c:551
#1 0x0805eed0 in connection_read (s=34) at connection.c:1528
#2 0x0805baa2 in slapd_daemon_task (ptr=0x0) at daemon.c:2461
#3 0x004e5371 in start_thread () from /lib/tls/libpthread.so.0
#4 0x0036effe in clone () from /lib/tls/libc.so.6
If I can provide any more information, please let me know. Thanks!
Thanks again for all the help!
-----Original Message-----
From: openldap-software-bounces+douglas=gpc.edu@OpenLDAP.org
[mailto:openldap-software-bounces+douglas=gpc.edu@OpenLDAP.org]On Behalf
Of Howard Chu
Sent: Friday, March 09, 2007 3:05 PM
To: Douglas B. Jones
Cc: openldap-software@openldap.org; Aaron Richton
Subject: Re: slapd stopping with no error message
Douglas B. Jones wrote:
> Thank you for the help, I thought that might be the case. I re-compiled
> slapd (and all) with -g (I put those in the CFLAGS and exported it). I
> then ran gdb with:
>
> gdb \
> -d /var/lib/ldap3/src/openldap-2.3.34/servers/slapd \
> -d /var/lib/ldap3/src/openldap-2.3.34/servers/slapd/back-bdd \
> -d /var/lib/ldap3/src/openldap-2.3.34/libraries/liblber \
> -d /var/lib/ldap3/src/openldap-2.3.34/libraries/libldap \
> -d /var/lib/ldap3/src/openldap-2.3.34/libraries/libldap_r\
> -d /var/lib/ldap3/src/openldap-2.3.34/libraries/libunicode\
> -d /var/lib/ldap3/src/openldap-2.3.34/libraries/libutil\
> -d /var/lib/ldap3/src/openldap-2.3.34/libraries/librewrite\
None of those options are necessary.
> /usr/local/openldap-2.3.34/libexec/slapd
By default the installed executables are stripped. You could just debug
the original binary in the build tree. (Or you can redo the install in
the slapd directory with "make install STRIP=" )
>
> and run it with:
>
> (gdb) r -d 1 -u ldap3 -h ldap://:389/ -l LOCAL6 -f \
> /usr/local/openldap-2.3.34/etc/openldap/slapd.conf -F \
> /usr/local/openldap-2.3.34/etc/openldap -u ldap3 -g ldap3
Have you read the slapd(8) manpage? Why are you providing both -f and
-F? You have -u twice.
>
> and when in the debugger it crashes on the first search and I type
> in where in gdb:
>
> (first part here last of output from -d 1 for slapd)
>>>> dnNormalize: <>
> <<< dnNormalize: <>
>>>> dnNormalize: <>
> <<< dnNormalize: <>
> <= str2entry(cn=Write,cn=Waiters,cn=Monitor) -> 0x25eaafd8
> backend_startup_one: starting "o=gpc,c=us"
> slapd starting
> [New Thread 634641328 (LWP 14073)]
> [New Thread 630442928 (LWP 14074)]
> [New Thread 626244528 (LWP 14075)]
> [New Thread 622046128 (LWP 14076)]
>>>> slap_listener(ldap://:389/)
> connection_get(34): got connid=0
> connection_read(34): checking for input on id=0
> ber_get_next
> ber_get_next: tag 0x30 len 12 contents:
> ber_get_next
> do_bind
> ber_scanf fmt ({imt) ber:
> ber_scanf fmt (m}) ber:
>>>> dnPrettyNormal: <>
> <<< dnPrettyNormal: <>, <>
> do_bind: version=3 dn="" method=128
> send_ldap_result: conn=0 op=0 p=3
> send_ldap_response: msgid=1 tag=97 err=0
> ber_flush: 14 bytes to sd 34
> connection_get(34): got connid=0
> connection_read(34): checking for input on id=0
> ber_get_next
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 634641328 (LWP 14073)]
> 0x0814c6bf in ?? ()
> (gdb) where
> #0 0x0814c6bf in ?? ()
> #1 0x00000001 in ?? ()
> #2 0x0000002c in ?? ()
> #3 0x25f1cfe7 in ?? ()
> #4 0x25f1cfdc in ?? ()
> #5 0x25f18f4c in ?? ()
> #6 0x25d410e0 in ?? ()
> #7 0x25d3a268 in ?? ()
> #8 0x00000000 in ?? ()
> (gdb)
>
> Unfortunately, I am not getting any reference to the C source files.
> What am I do wrong? Eventually, hopefully, I will know linux better.
> Thanks for any help....
>
> -----Original Message-----
> From: openldap-software-bounces+douglas=gpc.edu@OpenLDAP.org
> [mailto:openldap-software-bounces+douglas=gpc.edu@OpenLDAP.org]On Behalf
> Of Aaron Richton
> Sent: Friday, March 09, 2007 12:37 PM
> To: Douglas B. Jones
> Cc: Howard Chu; openldap-software@openldap.org
> Subject: RE: slapd stopping with no error message
>
>
> Try "where". Make sure that you have line numbers from the -g compile
> (e.g. "init.c:354"); otherwise the trace is near impossible to use.
>
> On Fri, 9 Mar 2007, Douglas B. Jones wrote:
>
>> I apologize, but I am not familiar with gdb. I attached to the process,
>> it crashed with a seg fault. What should I be typing in now? Thanks!
>>
>> -----Original Message-----
>> From: openldap-software-bounces+douglas=gpc.edu@OpenLDAP.org
>> [mailto:openldap-software-bounces+douglas=gpc.edu@OpenLDAP.org]On Behalf
>> Of Douglas B. Jones
>> Sent: Friday, March 09, 2007 8:34 AM
>> To: Howard Chu
>> Cc: Douglas B Jones; openldap-software@openldap.org
>> Subject: RE: slapd stopping with no error message
>>
>>
>>
>> Thanks. I am compiling with efence library right now. I am not too
>> worried about the speed, it is not prod. I would like to run it under
>> gdb, and I will try that, the problem is that if I loose my connection
>> the only thing I can think of is to kill the other gdb, then re-attach.
>> I guess that would not cause a problem. I was hoping with the cd and
>> ulimit that the core would be generated and then gdb on that. Thanks!
>>
>> -----Original Message-----
>> From: openldap-software-bounces+douglas=gpc.edu@OpenLDAP.org
>> [mailto:openldap-software-bounces+douglas=gpc.edu@OpenLDAP.org]On Behalf
>> Of Howard Chu
>> Sent: Friday, March 09, 2007 12:55 AM
>> To: Douglas B. Jones
>> Cc: openldap-software@openldap.org
>> Subject: Re: slapd stopping with no error message
>>
>>
>> Douglas B. Jones wrote:
>>>
>>> The .34 failed. I set ulimit -c 100000 and found no core on the system.
>>> I am running it again in case I made a mistake. It is compiled with debug.
>>> More later. Thanks!
>> Still better to run under gdb. But given the fact that you're getting
>> heap corruption, you're really going to need something like efence in
>> addition. Unfortunately that's going to make things run very slowly, but
>> that's the only sure way to identify the root cause of the problem.
>>
>>> -----Original Message-----
>>> From: openldap-software-bounces+douglas=gpc.edu@openldap.org
>>> [mailto:openldap-software-bounces+douglas=gpc.edu@openldap.org] On Behalf Of
>>> Douglas B. Jones
>>> Sent: Friday, February 23, 2007 3:30 PM
>>> To: openldap-software@openldap.org
>>> Cc: Douglas B. Jones
>>> Subject: RE: slapd stopping with no error message
>>>
>>>
>>> I attached a gdb to the new process plus the -d 7 output (you know,
>>> that neat thing that unix has called redirection). Hopefully, the
>>> connection I have to the computer will not be lost and I will be
>>> able to get the trace if it fails. Also, not the results below are
>>> just the last part of the output. Let me know if I need more. For
>>> what it is worth, I did the 'he' search shown at the bottom below
>>> and it did not fail.... Thanks!
>>>
>>> -----Original Message-----
>>> From: openldap-software-bounces+douglas=gpc.edu@openldap.org
>>> [mailto:openldap-software-bounces+douglas=gpc.edu@openldap.org]On Behalf
>>> Of Douglas B. Jones
>>> Sent: Friday, February 23, 2007 2:22 PM
>>> To: openldap-software@openldap.org
>>> Cc: douglas@gpc.edu
>>> Subject: RE: slapd stopping with no error message
>>>
>>>
>>>
>>> Finally failed, I did not have a gdb on it, but did have -d 7. Below
>>> are the results. Thanks!
>>>
>>> do_search
>>> ldap_read: want=8 error=Resource temporarily unavailable
>>> ber_scanf fmt ({miiiib) ber:
>>>>>> dnPrettyNormal: <o=gpc,c=us>
>>> => ldap_bv2dn(o=gpc,c=us,0)
>>> <= ldap_bv2dn(o=gpc,c=us)=0
>>> => ldap_dn2bv(272)
>>> <= ldap_dn2bv(o=gpc,c=us)=0
>>> => ldap_dn2bv(272)
>>> <= ldap_dn2bv(o=gpc,c=us)=0
>>> <<< dnPrettyNormal: <o=gpc,c=us>, <o=gpc,c=us>
>>> SRCH "o=gpc,c=us" 2 0 100 3600 0
>>> ber_scanf fmt ({m) ber:
>>> ber_scanf fmt (m) ber:
>>> ber_scanf fmt ({m) ber:
>>> ber_scanf fmt (m) ber:
>>> ber_scanf fmt ({m) ber:
>>> ber_scanf fmt (m) ber:
>>> filter: (|(cn=he*)(mail=he*)(sn=he*))
>>> ber_scanf fmt ({M}}) ber:
>>> attrs: cn mail
>>> *** glibc detected *** corrupted double-linked list: 0x29400048 ***
>>> /etc/init.d/gpcldap-33: line 51: 11051 Aborted ${slapd} -d 7
>>> -u $user -h "ldap://:$P/"; $OPTIONS $SLAPD_OPTIONS
>>
>> --
>> -- Howard Chu
>> Chief Architect, Symas Corp. http://www.symas.com
>> Director, Highland Sun http://highlandsun.com/hyc
>> Chief Architect, OpenLDAP http://www.openldap.org/project/
>>
>>
>>
>>
>
>
>
--
-- Howard Chu
Chief Architect, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc
Chief Architect, OpenLDAP http://www.openldap.org/project/