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syncrepl consumer fails with segmentation-fault

To: openldap-software@openldap.org
Subject: syncrepl consumer fails with segmentation-fault
From: openldap <openldap@ayni.com>
Date: Thu, 24 Jul 2008 16:16:20 +0200
User-agent: Thunderbird 2.0.0.14 (X11/20080501)

Hi listers

we are running 3 openldap servers:
one as provider with
openldap-servers-2.3.39-3.fc8

the other 2 as consumers with
openldap-servers-2.4.8-6.fc9.i386

the provider runs fedora 8, the consumers run fedora 9.

as i am aware that the slurpd mechanism for synchronization is no longer supported in openldap-2.4.xxx, i tried to install syncrepl, all to no avail.

........

the actual situation is that as soon as i do a change in the provider, the consumers immediatly get a segmentation fault and leave the bdb in an unusable state. when i restart the consumers, they inform me about the unusable db, refresh it and redo the pending syncrepl-request, which again makes them do a segmentation-fault.

we use sleepycat dbs exclusively. the version on the consumers is db4-4.6.21-5.fc9.i386

the config with regard to syncrepl is:

---- in the provider:

...
index entryCSN,entryUUID eq
....
modulepath      /usr/lib/openldap/
moduleload      syncprov.la
...


# syncrepl as a provider
overlay syncprov
#syncprov-checkpoint 100 10
syncprov-sessionlog 100

(i commented out syncproc-checkpoint after having read a corresponding issue from a mailing-list)


---- in the consumers

... index entryUUID,entryCSN eq ... modulepath /usr/lib/openldap/ moduleload syncprov.la ... # syncrepl as a consumer syncrepl rid=1 provider=ldap://ldapadmin.mydom.com/ binddn="cn=manager,dc=mydom,dc=com" bindmethod=simple credentials=XXXXXXXXXXXXXX searchbase="dc=mydom,dc=com" filter="(objectClass=*)" attrs="*,structuralObjectClass,entryUUID,entryCSN, \ creatorsName,createTimestamp,modifiersName,modifyTimestamp" schemachecking=off scope=sub type=refreshAndPersist retry="5 5 300 5"

..............

when doing a change on the provider, the providers log is:

Jul 24 15:01:18 violina slapd[17811]: conn=25 fd=33 ACCEPT from IP=xxx.xxx.xxx.163:34702 (IP=0.0.0.0 :636) Jul 24 15:01:18 violina slapd[17811]: conn=25 fd=33 TLS established tls_ssf=56 ssf=56 Jul 24 15:01:18 violina slapd[17811]: conn=25 op=0 BIND dn="" method=128 Jul 24 15:01:18 violina slapd[17811]: conn=25 op=0 RESULT tag=97 err=0 text= Jul 24 15:01:18 violina slapd[17811]: conn=25 op=1 SRCH base="" scope=0 deref=2 filter="(objectClass =*)" Jul 24 15:01:18 violina slapd[17811]: conn=25 op=1 SRCH attr=namingContexts Jul 24 15:01:18 violina slapd[17811]: conn=25 op=1 SEARCH RESULT tag=101 err=0 nentries=1 text= Jul 24 15:01:18 violina slapd[17811]: conn=25 op=2 BIND dn="cn=config" method=163 Jul 24 15:01:18 violina slapd[17811]: conn=25 op=2 RESULT tag=97 err=14 text= Jul 24 15:01:18 violina slapd[17811]: conn=25 op=3 BIND dn="cn=config" method=163 Jul 24 15:01:18 violina slapd[17811]: conn=25 op=3 BIND authcid="myuser@ldap" authzid="myuser@ldap" Jul 24 15:01:18 violina slapd[17811]: conn=25 op=3 BIND dn="cn=myuser,ou=pam-ldap,dc=mydom,dc=com" mec h=DIGEST-MD5 sasl_ssf=0 ssf=56 Jul 24 15:01:18 violina slapd[17811]: conn=25 op=3 RESULT tag=97 err=0 text= Jul 24 15:01:18 violina slapd[17811]: conn=25 op=4 MOD dn="cn=ACCUG,ou=LDIF-Test,dc=mydom,dc=com" Jul 24 15:01:18 violina slapd[17811]: conn=25 op=4 MOD attr=description Jul 24 15:01:18 violina slapd[17811]: conn=25 op=4 RESULT tag=103 err=0 text= Jul 24 15:01:18 violina slapd[17811]: conn=25 fd=33 closed (connection lost)

when the syncrepl from one of the consumers comes in, the providers log is:

Jul 24 15:13:03 violina slapd[17811]: conn=109 fd=35 ACCEPT from IP=xxx.xxx.xxx.165:59830 (IP=0.0.0.0:389) Jul 24 15:13:03 violina slapd[17811]: conn=109 op=0 BIND dn="cn=manager,dc=mydom,dc=com" method=128 Jul 24 15:13:03 violina slapd[17811]: conn=109 op=0 BIND dn="cn=Manager,dc=mydom,dc=com" mech=SIMPLE ssf=0 Jul 24 15:13:03 violina slapd[17811]: conn=109 op=0 RESULT tag=97 err=0 text= Jul 24 15:13:03 violina slapd[17811]: conn=109 op=1 SRCH base="dc=mydom,dc=com" scope=2 deref=0 filter="(objectClass=*)" Jul 24 15:13:03 violina slapd[17811]: conn=109 op=1 SRCH attr=entryUUID creatorsName createTimestamp modifiersName modifyTimestamp * objectClass structuralObjectClass entryCSN Jul 24 15:13:03 violina slapd[17811]: conn=109 fd=35 closed (connection lost)

........................

when the consumer tries do do a syncrepl the consumer's log is:

Jul 24 14:59:16 mirador slapd[31054]: null_callback : error code 0x10 Jul 24 14:59:16 mirador slapd[31054]: syncrepl_updateCookie: rid=001 be_modify failed (16)

and then it fails with a Segmentation fault:

when running slapd -d7, i get:
....

ldap_write: want=265, written=265 0000: 30 82 01 05 02 01 02 63 81 a9 04 0e 64 63 3d 61 0......c....dc=a 0010: 79 6e 69 2c 64 63 3d 63 6f 6d 0a 01 02 0a 01 00 yni,dc=com...... 0020: 02 01 00 02 01 00 01 01 00 87 0b 6f 62 6a 65 63 ...........objec 0030: 74 43 6c 61 73 73 30 7b 04 09 65 6e 74 72 79 55 tClass0{..entryU 0040: 55 49 44 04 0c 63 72 65 61 74 6f 72 73 4e 61 6d UID..creatorsNam 0050: 65 04 0f 63 72 65 61 74 65 54 69 6d 65 73 74 61 e..createTimesta 0060: 6d 70 04 0d 6d 6f 64 69 66 69 65 72 73 4e 61 6d mp..modifiersNam 0070: 65 04 0f 6d 6f 64 69 66 79 54 69 6d 65 73 74 61 e..modifyTimesta 0080: 6d 70 04 01 2a 04 0b 6f 62 6a 65 63 74 43 6c 61 mp..*..objectCla 0090: 73 73 04 15 73 74 72 75 63 74 75 72 61 6c 4f 62 ss..structuralOb 00a0: 6a 65 63 74 43 6c 61 73 73 04 08 65 6e 74 72 79 jectClass..entry 00b0: 43 53 4e a0 54 30 52 04 18 31 2e 33 2e 36 2e 31 CSN.T0R..1.3.6.1 00c0: 2e 34 2e 31 2e 34 32 30 33 2e 31 2e 39 2e 31 2e .4.1.4203.1.9.1. 00d0: 31 04 36 30 34 0a 01 03 04 2c 72 69 64 3d 30 30 1.604....,rid=00 00e0: 31 2c 63 73 6e 3d 32 30 30 38 30 37 32 34 30 39 1,csn=2008072409 00f0: 34 33 33 33 5a 23 30 30 30 30 30 31 23 30 30 23 4333Z#000001#00# 0100: 30 30 30 30 30 30 01 01 ff 000000...

=>do_syncrep2 rid=001
ldap_result ld 0xb9c94970 msgid 2
wait4msg ld 0xb9c94970 msgid 2 (timeout 0 usec)
wait4msg continue ld 0xb9c94970 msgid 2 all 0
** ld 0xb9c94970 Connections:
* host: ldapadmin.mydom.com  port: 389  (default)
  refcnt: 2  status: Connected
  last used: Thu Jul 24 16:02:25 2008


** ld 0xb9c94970 Outstanding Requests:
 * msgid 2,  origid 2, status InProgress
   outstanding referrals 0, parent count 0
  ld 0xb9c94970 request count 1 (abandoned 0)
** ld 0xb9c94970 Response Queue:
   Empty
  ld 0xb9c94970 response count 0
ldap_chkResponseList ld 0xb9c94970 msgid 2 all 0
ldap_chkResponseList returns ld 0xb9c94970 NULL
ldap_int_select
connection_get(12)
connection_get(12): got connid=0
=>do_syncrepl rid=001
=>do_syncrep2 rid=001
ldap_result ld 0xb9c94970 msgid 2
wait4msg ld 0xb9c94970 msgid 2 (timeout 0 usec)
wait4msg continue ld 0xb9c94970 msgid 2 all 0
** ld 0xb9c94970 Connections:
* host: ldapadmin.mydom.com  port: 389  (default)
  refcnt: 2  status: Connected
  last used: Thu Jul 24 16:02:25 2008

** ld 0xb9c94970 Outstanding Requests: * msgid 2, origid 2, status InProgress outstanding referrals 0, parent count 0 ld 0xb9c94970 request count 1 (abandoned 0) ** ld 0xb9c94970 Response Queue: Empty ld 0xb9c94970 response count 0 ldap_chkResponseList ld 0xb9c94970 msgid 2 all 0 ldap_chkResponseList returns ld 0xb9c94970 NULL ldap_int_select read1msg: ld 0xb9c94970 msgid 2 all 0 ber_get_next ldap_read: want=8, got=8 0000: 30 48 02 01 02 79 43 80 0H...yC.

ldap_read: want=66, got=66 0000: 18 31 2e 33 2e 36 2e 31 2e 34 2e 31 2e 34 32 30 .1.3.6.1.4.1.420 0010: 33 2e 31 2e 39 2e 31 2e 34 81 27 a3 25 04 0c 63 3.1.9.1.4.'.%..c 0020: 73 6e 3d 2c 72 69 64 3d 30 30 31 01 01 ff 31 12 sn=,rid=001...1. 0030: 04 10 55 1f 4d f6 a7 44 10 29 99 1e ee 7e f2 a8 ..U.M..D.)...~.. 0040: 1c 52 .R

ber_get_next: tag 0x30 len 72 contents:
read1msg: ld 0xb9c94970 msgid 2 message type intermediate
ldap_parse_intermediate
ber_scanf fmt ({) ber:
ber_scanf fmt (a) ber:
ber_scanf fmt (O) ber:
ber_scanf fmt (t{) ber:
ber_scanf fmt (m) ber:
Segmentation fault
[root@mirador /etc/openldap]#

i also thought, it might probably be a memory error and run the memory-check for more than an hour: nothing was found.

what can i do else?

thank for all hints.

suomi

Follow-Ups:
- Re: syncrepl consumer fails with segmentation-fault
  - From: Quanah Gibson-Mount <quanah@zimbra.com>
- Re: syncrepl consumer fails with segmentation-fault
  - From: "chris g. sellers" <chris.sellers@nitle.org>

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