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Re: (ITS#7839) openldap libdb5 support
by quanah＠zimbra.com 17 Apr '14

17 Apr '14

--On Thursday, April 17, 2014 2:55 PM +0000 marc.schildt(a)idealo.de wrote: > Full_Name: Marc Schildt > Version: 2.4.24 - 2.4.39 The OpenLDAP project is in no way associated with the utterly broken builds provided by Debian. I would note that you cannot simply change the version of BDB that OpenLDAP is linked to and expect your database to work. You *must* slapcat your db using the old version of BDB, then upgrade openldap, then import with slapdd into the new build of OpenLDAP with the newer BDB. Nothing in your report specifically sounds like an issue with OpenLDAP itself. I've been using OpenLDAP with BDB 5.2 for many years, no issue. This ITS will be closed. --Quanah -- Quanah Gibson-Mount Architect - Server Zimbra, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration

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(ITS#7839) openldap libdb5 support
by marc.schildt＠idealo.de 17 Apr '14

17 Apr '14

Full_Name: Marc Schildt Version: 2.4.24 - 2.4.39 OS: Debian wheezy URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (212.162.49.126) Hello, we identified problems with the slapd version provided with debian wheezy. Our workstations are using sssd for auth against our openldap-server. The setup works well with slapd 2.4.23-7.3 on Debian squeeze. But, after building a new LDAP server on Debian wheezy, sssd stops working correctly and authentification of the workstations is not working anymore. Debian wheezy is using the slapd 2.4.31-1+nmu2. The following sssd versions we had tested with on different OS: sssd.x86_64 1.9.2-129.el6_5.4 @rhel-6-server-rpms sssd-client.x86_64 1.9.2-129.el6_5.4 @rhel-6-server-rpms sssd 1.8.6-0ubuntu0.3 We then tried to self compile openldap on debian wheezy (source from openldap.org). >From openldap2.4.39 down to 2.4.24 the built packages still did not work correctly with sssd. Reaching 2.4.23, the source won't compile anymore. So, after checking the change log, we saw that in 2.4.24 support for Berkley DB 5.1 was introduced in the source and for 2.4.23, db4.8 is needed. We have then compiled the Berkley DB 4.8 source from debian squeeze on debian wheezy and 2.4.23 was compiling cleanly. And, surprise, the combination of openldap and sssd was working as expected. After this success, we continued with a rebuild of openldap 2.4.31-1+nmu2 against the newly installed libdb4.8-dev libs. And again, we happily seeing openldap 2.4.31-1+nmu2 (built against libdb4.8) working like a charm together with sssd. So, maybe there is a major problem with libdb5 support introduced in openldap version 2.4.24 ? slapd.conf: # This is the main slapd configuration file. See slapd.conf(5) for more # info on the configuration options. ######################### # Global Directives # ######################### # Schema and objectClass definitions include /etc/ldap/schema/core.schema include /etc/ldap/schema/cosine.schema include /etc/ldap/schema/nis.schema include /etc/ldap/schema/inetorgperson.schema include /etc/ldap/schema/samba.schema include /etc/ldap/schema/my.schema # Where the pid file is put. The init.d script # will not stop the server if you change this. pidfile /var/run/slapd/slapd.pid # List of arguments that were passed to the server argsfile /var/run/slapd/slapd.args # Where the dynamically loaded modules are stored modulepath /usr/lib/ldap moduleload back_hdb moduleload memberof moduleload refint # The maximum number of entries that is returned for a search operation sizelimit unlimited loglevel stats # The tool-threads parameter sets the actual amount of cpu's that is used # for indexing. tool-threads 1 # Global ACL's access to dn.base="" by * read access to dn.base="cn=Subschema" by * read access to * by * read ######################### # DB Directives # ######################### database hdb cachesize 20000 suffix "dc=example,dc=com" rootdn "cn=admin,dc=example,dc=com" rootpw {SSHA}123456 directory "/var/lib/ldap" checkpoint 1024 5 # INDEXING index default eq index objectClass,memberUid,uidNumber,gidNumber eq,pres index givenName,dc,displayName,distinguishedName eq,pres index cn,sn,mail,uid eq,pres,sub index member,memberOf,uniqueMember eq,pres # syncprov index entryUUID,entryCSN,ou eq index nisMapName,nisMapEntry eq,pres,sub # samba index sambaSID,sambaPrimaryGroupSID,sambaDomainName,sambaGroupType,sambaSIDList eq syncrepl rid="200" provider="ldaps://ldap-provider.example.com" searchbase="dc=example,dc=com" type="refreshAndPersist" retry="2 30 60 +" filter="objectClass=*" scope="sub" attrs="*,+" sizelimit="unlimited" timelimit="unlimited" binddn="cn=replicator.ldap-consumer2.example.com,dc=example,dc=com" bindmethod="simple" credentials="123456" tls_reqcert="allow" # DB ACL's access to * by dn.exact="cn=replicator.ldap-consumer2.example.com,dc=example,dc=com" write by * break limits dn.exact="cn=replicator.ldap-consumer2.example.com,dc=example,dc=com" size=unlimited time=unlimited access to attrs=sambaNTPassword by dn.exact="cn=sambaconnect,dc=example,dc=com" read by self write by * none limits dn.exact="cn=sambaconnect,dc=example,dc=com" size=unlimited time=unlimited access to attrs=userPassword,userPKCS12 by self write by * auth access to * by dn.exact="cn=accessuser,dc=example,dc=com" read by * break limits dn.exact="cn=accessuser,dc=example,dc=com" size=unlimited time=unlimited # Overlay Config overlay memberof memberof-refint true memberof-dangling error memberof-dn cn=memberof-overlay overlay refint refint_attributes member memberOf manager owner seeAlso refint_nothing cn=refinit.nothing,ou=system,dc=example,dc=com TLSCACertificateFile /etc/ldap/certs/ldap-ca.pem TLSCertificateFile /etc/ldap/certs/ldap-consumer2.example.com.pem TLSCertificateKeyFile /etc/ldap/certs/ldap-consumer2.example.com.key TLSVerifyClient allow sssd.conf: # # RESET SSS cache: # service sssd stop # rm /var/lib/sss/db/cache_* # service sssd start [sssd] config_file_version = 2 reconnection_retries = 3 sbus_timeout = 30 services = nss, pam domains = INTERN [nss] filter_groups = root filter_users = root reconnection_retries = 3 entry_cache_timeout = 300 entry_cache_nowait_percentage = 50 entry_negative_timeout = 15 [pam] reconnection_retries = 3 offline_credentials_expiration = 30 offline_failed_login_attempts = 0 offline_failed_login_delay = 5 [domain/LDAP] enumerate = true cache_credentials = true id_provider = ldap auth_provider = ldap chpass_provider = ldap ldap_uri = ldaps://ldap-consumer2.example.com ldap_search_base = dc=example,dc=com ldap_tls_reqcert = allow ldap_tls_cacert = /etc/ssl/certs/ldap-ca.pem slapd_sssd_request_succsess.log → slapd 2.4.23-7.3 / libdb 4.8.30-2: Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 fd=17 ACCEPT from IP=172.30.2.191:49845 (IP=0.0.0.0:636) Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 fd=17 TLS established tls_ssf=128 ssf=128 Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=0 SRCH base="" scope=0 deref=0 filter="(objectClass=*)" Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=0 SRCH attr=* altServer namingContexts supportedControl supportedExtension supportedFeatures supportedLDAPVersion supportedSASLMechanisms defaultNamingContext lastUSN highestCommittedUSN Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=0 SEARCH RESULT tag=101 err=0 nentries=1 text= Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=1 BIND dn="" method=128 Apr 15 17:43:45 ldap-slave slapd[1810]: slap_global_control: unrecognized control: 1.3.6.1.4.1.42.2.27.8.5.1 Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=1 RESULT tag=97 err=0 text= Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=2 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(objectClass=posixAccount)(uid=*)(uidNumber=*)(gidNumber=*))" Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=2 SRCH attr=objectClass uid userPassword uidNumber gidNumber gecos homeDirectory loginShell krbPrincipalName cn modifyTimestamp modifyTimestamp shadowLastChange shadowMin shadowMax shadowWarning shadowInactive shadowExpire shadowFlag krbLastPwdChange krbPasswordExpiration pwdAttribute authorizedService accountExpires userAccountControl nsAccountLock host loginDisabled loginExpirationTime loginAllowedTimeMap Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=2 SEARCH RESULT tag=101 err=0 nentries=1000 text= Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=3 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(objectClass=posixAccount)(uid=*)(uidNumber=*)(gidNumber=*))" Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=3 SRCH attr=objectClass uid userPassword uidNumber gidNumber gecos homeDirectory loginShell krbPrincipalName cn modifyTimestamp modifyTimestamp shadowLastChange shadowMin shadowMax shadowWarning shadowInactive shadowExpire shadowFlag krbLastPwdChange krbPasswordExpiration pwdAttribute authorizedService accountExpires userAccountControl nsAccountLock host loginDisabled loginExpirationTime loginAllowedTimeMap Apr 15 17:43:45 ldap-slave slapd[1810]: conn=1001 op=3 SEARCH RESULT tag=101 err=0 nentries=181 text= Apr 15 17:43:46 ldap-slave slapd[1810]: conn=1001 op=4 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(objectClass=posixGroup)(cn=*)(&(gidNumber=*)(!(gidNumber=0))))" Apr 15 17:43:46 ldap-slave slapd[1810]: conn=1001 op=4 SRCH attr=objectClass cn userPassword gidNumber memberuid modifyTimestamp modifyTimestamp Apr 15 17:43:46 ldap-slave slapd[1810]: conn=1001 op=4 SEARCH RESULT tag=101 err=0 nentries=253 text= Apr 15 17:43:48 ldap-slave slapd[1810]: conn=1001 op=5 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(objectClass=ipService)(cn=*)(ipServicePort=*)(ipServiceProtocol=*))" Apr 15 17:43:48 ldap-slave slapd[1810]: conn=1001 op=5 SRCH attr=objectClass cn ipServicePort ipServiceProtocol modifyTimestamp Apr 15 17:43:48 ldap-slave slapd[1810]: conn=1001 op=5 SEARCH RESULT tag=101 err=0 nentries=0 text= Apr 15 17:43:58 ldap-slave slapd[1810]: conn=1001 op=6 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(uid=test.user)(objectClass=posixAccount))" Apr 15 17:43:58 ldap-slave slapd[1810]: conn=1001 op=6 SRCH attr=objectClass uid userPassword uidNumber gidNumber gecos homeDirectory loginShell krbPrincipalName cn modifyTimestamp modifyTimestamp shadowLastChange shadowMin shadowMax shadowWarning shadowInactive shadowExpire shadowFlag krbLastPwdChange krbPasswordExpiration pwdAttribute authorizedService accountExpires userAccountControl nsAccountLock host loginDisabled loginExpirationTime loginAllowedTimeMap Apr 15 17:43:58 ldap-slave slapd[1810]: conn=1001 op=6 SEARCH RESULT tag=101 err=0 nentries=1 text= Apr 15 17:43:58 ldap-slave slapd[1810]: conn=1001 op=7 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(memberUid=test.user)(objectClass=posixGroup)(cn=*)(&(gidNumber=*)(!(gidNumber=0))))" Apr 15 17:43:58 ldap-slave slapd[1810]: conn=1001 op=7 SRCH attr=objectClass cn userPassword gidNumber memberuid modifyTimestamp modifyTimestamp Apr 15 17:43:58 ldap-slave slapd[1810]: conn=1001 op=7 SEARCH RESULT tag=101 err=0 nentries=22 text= Apr 15 17:46:14 ldap-slave slapd[1810]: conn=1001 op=8 UNBIND Apr 15 17:46:14 ldap-slave slapd[1810]: conn=1001 fd=17 closed slapd_sssd_request_no_succsess.log → slapd 2.4.31-1+nmu2 / libdb 5.1.29-5: Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 fd=28 ACCEPT from IP=172.30.2.191:58270 (IP=0.0.0.0:636) Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 fd=28 TLS established tls_ssf=128 ssf=128 Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=0 SRCH base="" scope=0 deref=0 filter="(objectClass=*)" Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=0 SRCH attr=* altServer namingContexts supportedControl supportedExtension supportedFeatures supportedLDAPVersion supportedSASLMechanisms defaultNamingContext lastUSN highestCommittedUSN Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=0 SEARCH RESULT tag=101 err=0 nentries=1 text= Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=1 BIND dn="" method=128 Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=1 RESULT tag=97 err=0 text= Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=2 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(objectClass=posixAccount)(uid=*)(uidNumber=*)(gidNumber=*))" Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=2 SRCH attr=objectClass uid userPassword uidNumber gidNumber gecos homeDirectory loginShell krbPrincipalName cn modifyTimestamp modifyTimestamp shadowLastChange shadowMin shadowMax shadowWarning shadowInactive shadowExpire shadowFlag krbLastPwdChange krbPasswordExpiration pwdAttribute authorizedService accountExpires userAccountControl nsAccountLock host loginDisabled loginExpirationTime loginAllowedTimeMap Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=2 SEARCH RESULT tag=101 err=0 nentries=0 text= Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=3 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(objectClass=posixGroup)(cn=*)(&(gidNumber=*)(!(gidNumber=0))))" Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=3 SRCH attr=objectClass cn userPassword gidNumber memberuid modifyTimestamp modifyTimestamp Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=3 SEARCH RESULT tag=101 err=0 nentries=0 text= Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=4 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(objectClass=ipService)(cn=*)(ipServicePort=*)(ipServiceProtocol=*))" Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=4 SRCH attr=objectClass cn ipServicePort ipServiceProtocol modifyTimestamp Apr 15 17:18:15 ldap-consumer2 slapd[16228]: conn=1116 op=4 SEARCH RESULT tag=101 err=0 nentries=0 text= Apr 15 17:18:37 ldap-consumer2 slapd[16228]: conn=1116 op=5 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(uid=test.user)(objectClass=posixAccount))" Apr 15 17:18:37 ldap-consumer2 slapd[16228]: conn=1116 op=5 SRCH attr=objectClass uid userPassword uidNumber gidNumber gecos homeDirectory loginShell krbPrincipalName cn modifyTimestamp modifyTimestamp shadowLastChange shadowMin shadowMax shadowWarning shadowInactive shadowExpire shadowFlag krbLastPwdChange krbPasswordExpiration pwdAttribute authorizedService accountExpires userAccountControl nsAccountLock host loginDisabled loginExpirationTime loginAllowedTimeMap Apr 15 17:18:37 ldap-consumer2 slapd[16228]: conn=1116 op=5 SEARCH RESULT tag=101 err=0 nentries=1 text= Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=6 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(gidNumber=20001)(objectClass=posixGroup)(cn=*)(&(gidNumber=*)(!(gidNumber=0))))" Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=6 SRCH attr=objectClass cn userPassword gidNumber memberuid modifyTimestamp modifyTimestamp Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=6 SEARCH RESULT tag=101 err=0 nentries=0 text= Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=7 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(uid=test.user)(objectClass=posixAccount))" Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=7 SRCH attr=objectClass uid userPassword uidNumber gidNumber gecos homeDirectory loginShell krbPrincipalName cn modifyTimestamp modifyTimestamp shadowLastChange shadowMin shadowMax shadowWarning shadowInactive shadowExpire shadowFlag krbLastPwdChange krbPasswordExpiration pwdAttribute authorizedService accountExpires userAccountControl nsAccountLock host loginDisabled loginExpirationTime loginAllowedTimeMap Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=7 SEARCH RESULT tag=101 err=0 nentries=1 text= Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=8 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(memberUid=test.user)(objectClass=posixGroup)(cn=*)(&(gidNumber=*)(!(gidNumber=0))))" Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=8 SRCH attr=objectClass cn userPassword gidNumber memberuid modifyTimestamp modifyTimestamp Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=8 SEARCH RESULT tag=101 err=0 nentries=0 text= Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=9 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(&(gidNumber=20001)(objectClass=posixGroup)(cn=*)(&(gidNumber=*)(!(gidNumber=0))))" Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=9 SRCH attr=objectClass cn userPassword gidNumber memberuid modifyTimestamp modifyTimestamp Apr 15 17:18:38 ldap-consumer2 slapd[16228]: conn=1116 op=9 SEARCH RESULT tag=101 err=0 nentries=0 text= Apr 15 17:18:58 ldap-consumer2 slapd[16228]: conn=1116 op=10 UNBIND Apr 15 17:18:58 ldap-consumer2 slapd[16228]: conn=1116 fd=28 closed

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Re: (ITS#7837) slapd seg faults in slapo-rwm
by michael＠stroeder.com 16 Apr '14

16 Apr '14

One more thing to note: We see some coincidence between the seg faults and situations where the load on the machine goes up and number of pending threads in back-monitor had values in the range of 16 to 22 (threads is 16 for four cores).

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Re: (ITS#7837) slapd seg faults in slapo-rwm
by hyc＠symas.com 15 Apr '14

15 Apr '14

Michael Ströder wrote: > On Tue, 15 Apr 2014 04:35:26 -0700 Howard Chu <hyc(a)symas.com> wrote >> Can you run slapd with ElectricFence and post stack traces and diagnostics >> from any crashes there? > > Hmm, I will look into it. > But I'm a bit cautious running such a component in production. > Would running with MALLOC_CHECK_ be also reasonable helpful? Possibly using MALLOC_CHECK_=3 could give us a clue, yes. > > BTW: The configuration uses back-mdb. > > Another strange thing to note: > The archived syslog files revealed that the bind-DN rewriting is currently > *not* used by the LDAP clients at all. So I really wonder where it even calls > into slapo-rwm during normal operation. Good question. > > Ciao, Michael. > > > -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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Re: (ITS#7837) slapd seg faults in slapo-rwm
by michael＠stroeder.com 15 Apr '14

15 Apr '14

On Tue, 15 Apr 2014 04:35:26 -0700 Howard Chu <hyc(a)symas.com> wrote > Can you run slapd with ElectricFence and post stack traces and diagnostics > from any crashes there? Hmm, I will look into it. But I'm a bit cautious running such a component in production. Would running with MALLOC_CHECK_ be also reasonable helpful? BTW: The configuration uses back-mdb. Another strange thing to note: The archived syslog files revealed that the bind-DN rewriting is currently *not* used by the LDAP clients at all. So I really wonder where it even calls into slapo-rwm during normal operation. Ciao, Michael.

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Re: (ITS#7838) add ORDERING matching rules to ppolicy attribute type descriptions
by michael＠stroeder.com 15 Apr '14

15 Apr '14

----==c72dbb1057ded1e9651a6f0c83ebf46f Content-Type: text/plain; charset=UTF-8; format=fixed Content-Transfer-Encoding: 8bit Attached a patch against git master. Hopefully I did not mess up the ppolicy.ldif with the wrapped lines. I, Michael Ströder, hereby place the attached modifications to OpenLDAP Software (and only these modifications) into the public domain. 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1 0

(ITS#7838) add ORDERING matching rules to ppolicy attribute type descriptions
by michael＠stroeder.com 15 Apr '14

15 Apr '14

Full_Name: Version: HEAD and RE24 OS: URL: Submission from: (NULL) (212.227.35.93) For search pwdPolicy entries with certain parameters it would be handy to be able to search e.g. with (pwdMaxAge>=1). Therefore ORDERING integerOrderingMatch should be added to all Integer attribute types in ppolicy.schema and ppolicy.ldif.

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Re: (ITS#7837) slapd seg faults in slapo-rwm
by hyc＠symas.com 15 Apr '14

15 Apr '14

Michael Ströder wrote: > hyc(a)symas.com wrote: >>> slapd occasionally seg faults. >>> We can't reproduce it with a certain configuration. >>> >>> This is a custom Debian Wheezy package based on OpenLDAP 2.4.39 >>> linked against OpenSSL under a separate prefix. >>> >>> slapo-rwm is patched according to ITS#7723 but I can't tell whether >>> it's related to ITS#7723 or not. Hence the separate ITS. >> >> What behavior do you get by reverting the #7723 patch? > > The patch was applied because we had these seg faults before. > I'd rather say nothing changed in our case with the patch. > Crashes happen once or twice a week or so. > Also it was impossible to crash the non-patched installation with a test > script acting like described in ITS#7723. > > Fixing this would be highly appreciated but I can't provide a simple config > reproducing it. Can you run slapd with ElectricFence and post stack traces and diagnostics from any crashes there? > > The following rwm directives are in the frontend part: > > overlay rwm > rwm-rewriteEngine on > rwm-drop-unrequested-attrs no > # uid=foo,ou=xxxxx -> entryDN of entry within ou=xxxxx matching (uid=foo) > rwm-rewriteMap slapd uid2dn "ldap:///ou=xxxxx?entryDN?sub?" > rwm-rewriteContext bindDN > rwm-rewriteRule "^(uid=[^,]+),ou=xxxxx$" "${uid2dn($1)}" ":@I" > # serverFqdn=foo,ou=xxxxx -> entryDN of entry within ou=xxxxx matching > (serverFqdn=foo) > rwm-rewriteMap slapd fqdn2dn "ldap:///ou=xxxxx?entryDN?sub?" > rwm-rewriteContext bindDN > rwm-rewriteRule "^(serverFqdn=[^,]+),ou=xxxxx$" "${fqdn2dn($1)}" ":@I" > > In a former configuration version these directives were in the backend > ou=xxxxx part. Because of the seg faults I moved it which made things slightly > better but hard to tell. In another configuration variant I even experienced > seg faults with *slapcat*. > > This is a two-layer replication topology with several MMR providers and > read-only consumers which use SASL/EXTERNAL with client certs for > authentication and authz-regexp mapping to authz-DNs. If things are wrong > during consumer initialization sometimes even the providers crashes. > > Ciao, Michael. > -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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Re: (ITS#7837) slapd seg faults in slapo-rwm
by michael＠stroeder.com 15 Apr '14

15 Apr '14

hyc(a)symas.com wrote: >> slapd occasionally seg faults. >> We can't reproduce it with a certain configuration. >> >> This is a custom Debian Wheezy package based on OpenLDAP 2.4.39 >> linked against OpenSSL under a separate prefix. >> >> slapo-rwm is patched according to ITS#7723 but I can't tell whether >> it's related to ITS#7723 or not. Hence the separate ITS. > > What behavior do you get by reverting the #7723 patch? The patch was applied because we had these seg faults before. I'd rather say nothing changed in our case with the patch. Crashes happen once or twice a week or so. Also it was impossible to crash the non-patched installation with a test script acting like described in ITS#7723. Fixing this would be highly appreciated but I can't provide a simple config reproducing it. The following rwm directives are in the frontend part: overlay rwm rwm-rewriteEngine on rwm-drop-unrequested-attrs no # uid=foo,ou=xxxxx -> entryDN of entry within ou=xxxxx matching (uid=foo) rwm-rewriteMap slapd uid2dn "ldap:///ou=xxxxx?entryDN?sub?" rwm-rewriteContext bindDN rwm-rewriteRule "^(uid=[^,]+),ou=xxxxx$" "${uid2dn($1)}" ":@I" # serverFqdn=foo,ou=xxxxx -> entryDN of entry within ou=xxxxx matching (serverFqdn=foo) rwm-rewriteMap slapd fqdn2dn "ldap:///ou=xxxxx?entryDN?sub?" rwm-rewriteContext bindDN rwm-rewriteRule "^(serverFqdn=[^,]+),ou=xxxxx$" "${fqdn2dn($1)}" ":@I" In a former configuration version these directives were in the backend ou=xxxxx part. Because of the seg faults I moved it which made things slightly better but hard to tell. In another configuration variant I even experienced seg faults with *slapcat*. This is a two-layer replication topology with several MMR providers and read-only consumers which use SASL/EXTERNAL with client certs for authentication and authz-regexp mapping to authz-DNs. If things are wrong during consumer initialization sometimes even the providers crashes. Ciao, Michael.

1 0

Re: (ITS#7837) slapd seg faults in slapo-rwm
by hyc＠symas.com 14 Apr '14

14 Apr '14

michael(a)stroeder.com wrote: > Full_Name: Michael Ströder > Version: 2.4.39 with patches > OS: > URL: > Submission from: (NULL) (212.227.35.93) > > > slapd occasionally seg faults. > We can't reproduce it with a certain configuration. > > This is a custom Debian Wheezy package based on OpenLDAP 2.4.39 > linked against OpenSSL under a separate prefix. > > slapo-rwm is patched according to ITS#7723 but I can't tell whether > it's related to ITS#7723 or not. Hence the separate ITS. What behavior do you get by reverting the #7723 patch? > > master commit for the reference counting patch used: > http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=5f524c44… > > Here's the stack trace (obfuscated filter and search base): > > Program terminated with signal 11, Segmentation fault. > #0 0x00007f8ca2d8a29d in ?? () from /lib/x86_64-linux-gnu/libc.so.6 > (gdb) bt full > #0 0x00007f8ca2d8a29d in ?? () from /lib/x86_64-linux-gnu/libc.so.6 > No symbol table info available. > #1 0x00000000004f776b in rewrite_var_cmp (c1=0x7f8abaffb680, c2=0x7f8a884fba80) > at var.c:43 > v1 = 0x7f8abaffb680 > v2 = 0x7f8a884fba80 > __PRETTY_FUNCTION__ = "rewrite_var_cmp" > #2 0x0000000000500920 in avl_find (root=0x7f8a892823b0, data=0x7f8abaffb680, > fcmp=0x4f76a8 <rewrite_var_cmp>) at avl.c:545 > cmp = 0 > #3 0x00000000004f797e in rewrite_var_find (tree=0x7f8a892823b0, > name=0x7f8c9ff4b319 "searchFilter") at var.c:115 > var = {lv_name = 0x7f8c9ff4b319 "searchFilter", lv_flags = -1534643252, > lv_value = {bv_len = 140233568059984, bv_val = 0x7f8a89523fa0 ""}} > __PRETTY_FUNCTION__ = "rewrite_var_find" > #4 0x00000000004f5f51 in rewrite_session_var_set_f (info=0x1b4f770, > cookie=0x7f8c9fee2510, name=0x7f8c9ff4b319 "searchFilter", > value=0x7f8aac1d93a0 > "(&(member=uid=xxxxx,cn=yyyyy,ou=zzzzz)(objectClass=posixGroup)(cn=*))", > flags=15) at session.c:222 > session = 0x7f8a89523f90 > var = 0x1ffb > __PRETTY_FUNCTION__ = "rewrite_session_var_set_f" > #5 0x00007f8c9ff41836 in rwm_op_search (op=0x7f8aadb03a70, rs=0x7f8abaffcac0) > at rwm.c:955 > on = 0x1b4f530 > rwmap = 0x1b4f710 > rc = 32652 > dc = {rwmap = 0x7f8abaffb960, conn = 0x0, ctx = 0xffffffffffffffa8 > <Address 0xffffffffffffffa8 out of bounds>, rs = 0x2e90e50} > fstr = {bv_len = 0, bv_val = 0x0} > f = 0x0 > an = 0x0 > text = 0x0 > roc = 0x7f8aac1d95e8 > #6 0x00000000004cf13b in overlay_op_walk (op=0x7f8aadb03a70, rs=0x7f8abaffcac0, > which=op_search, oi=0x1b4d270, on=0x1b4f530) at backover.c:661 > func = 0x1b4f588 > rc = 32768 > #7 0x00000000004cf3ef in over_op_func (op=0x7f8aadb03a70, rs=0x7f8abaffcac0, > which=op_search) at backover.c:723 > oi = 0x1b4d270 > on = 0x1b4f530 > be = 0x772340 > db = {bd_info = 0x1b4f530, bd_self = 0x772340, be_ctrls = "\000", '\001' > <repeats 16 times>, '\000' <repeats 15 times>, be_flags = 131840, be_restrictops > = 0, be_requires = 19, be_ssf_set = { > sss_ssf = 128, sss_transport = 0, sss_tls = 0, sss_sasl = 0, > sss_update_ssf = 0, sss_update_transport = 0, sss_update_tls = 0, > sss_update_sasl = 0, sss_simple_bind = 0}, > be_suffix = 0x1acae40, be_nsuffix = 0x1acae90, be_schemadn = {bv_len = > 12, bv_val = 0x1ba32d0 "cn=Subschema"}, be_schemandn = {bv_len = 12, bv_val = > 0x1ba2c80 "cn=subschema"}, be_rootdn = { > bv_len = 0, bv_val = 0x0}, be_rootndn = {bv_len = 0, bv_val = 0x0}, > be_rootpw = {bv_len = 0, bv_val = 0x0}, be_max_deref_depth = 0, be_def_limit = > {lms_t_soft = 3600, lms_t_hard = 0, > lms_s_soft = 500, lms_s_hard = 0, lms_s_unchecked = -1, lms_s_pr = > 0, lms_s_pr_hide = 0, lms_s_pr_total = 0}, be_limits = 0x0, be_acl = 0x1b54bd0, > be_dfltaccess = ACL_READ, > be_extra_anlist = 0x0, be_update_ndn = {bv_len = 0, bv_val = 0x0}, > be_update_refs = 0x0, be_pending_csn_list = 0x0, be_pcl_mutex = {__data = > {__lock = 0, __count = 0, __owner = 0, __nusers = 0, > __kind = 0, __spins = 0, __list = {__prev = 0x0, __next = 0x0}}, > __size = '\000' <repeats 39 times>, __align = 0}, be_syncinfo = 0x0, be_pb = > 0x0, be_cf_ocs = 0x768e88, be_private = 0x0, > be_next = {stqe_next = 0x1acaee0}} > cb = {sc_next = 0x0, sc_response = 0x4ce266 <over_back_response>, > sc_cleanup = 0, sc_private = 0x1b4d270} > sc = 0x7f8aac1d9578 > rc = 32768 > __PRETTY_FUNCTION__ = "over_op_func" > #8 0x00000000004cf4cf in over_op_search (op=0x7f8aadb03a70, rs=0x7f8abaffcac0) > at backover.c:750 > No locals. > #9 0x0000000000440982 in do_search (op=0x7f8aadb03a70, rs=0x7f8abaffcac0) at > search.c:247 > base = {bv_len = 8, bv_val = 0x7f8a8801d589 "ou=zzzzz"} > siz = 7 > off = 0 > i = 7 > #10 0x000000000043d2da in connection_operation (ctx=0x7f8abaffcba0, > arg_v=0x7f8aadb03a70) at connection.c:1155 > rc = 80 > cancel = 32650 > op = 0x7f8aadb03a70 > rs = {sr_type = REP_RESULT, sr_tag = 0, sr_msgid = 0, sr_err = 0, > sr_matched = 0x0, sr_text = 0x0, sr_ref = 0x0, sr_ctrls = 0x0, sr_un = > {sru_search = {r_entry = 0x0, r_attr_flags = 0, > r_operational_attrs = 0x0, r_attrs = 0x0, r_nentries = 0, r_v2ref > = 0x0}, sru_sasl = {r_sasldata = 0x0}, sru_extended = {r_rspoid = 0x0, r_rspdata > = 0x0}}, sr_flags = 0} > tag = 99 > opidx = SLAP_OP_SEARCH > conn = 0x7f8c9fee2510 > memctx = 0x7f8aac028250 > memctx_null = 0x0 > memsiz = 1048576 > __PRETTY_FUNCTION__ = "connection_operation" > #11 0x00007f8ca4871c81 in ldap_int_thread_pool_wrapper (xpool=0x1aa7f70) at > tpool.c:688 > pool = 0x1aa7f70 > task = 0x7f8aa57bb7a0 > work_list = 0x1aa8008 > ctx = {ltu_id = 140233819543296, ltu_key = {{ltk_key = 0x43ce31, > ltk_data = 0x7f8aac028140, ltk_free = 0x43cc83 <conn_counter_destroy>}, {ltk_key > = 0x4af7af, ltk_data = 0x7f8aac028250, > ltk_free = 0x4af5d4 <slap_sl_mem_destroy>}, {ltk_key = 0x1c58fc0, > ltk_data = 0x7f8aac024fb0, ltk_free = 0x7f8ca15c4122 <mdb_reader_free>}, > {ltk_key = 0x7f8ca15b6b94, > ltk_data = 0x7f8a9f0f7010, ltk_free = 0x7f8ca15b6b4c > <scope_chunk_free>}, {ltk_key = 0x457c69, ltk_data = 0x7f8a88063040, ltk_free = > 0x457bbc <slap_op_q_destroy>}, { > ltk_key = 0x7f8ca15b9a39, ltk_data = 0x7f8a94be7010, ltk_free = > 0x7f8ca15b9a16 <search_stack_free>}, {ltk_key = 0x1c67c80, ltk_data = > 0x7f8ab46aadb0, > ltk_free = 0x7f8ca15c4122 <mdb_reader_free>}, {ltk_key = 0x0, > ltk_data = 0x0, ltk_free = 0} <repeats 25 times>}} > kctx = 0x0 > ---Type <return> to continue, or q <return> to quit--- > i = 32 > keyslot = 377 > hash = 3746453881 > __PRETTY_FUNCTION__ = "ldap_int_thread_pool_wrapper" > #12 0x00007f8ca2feab50 in start_thread () from > /lib/x86_64-linux-gnu/libpthread.so.0 > No symbol table info available. > #13 0x00007f8ca2d350ed in clone () from /lib/x86_64-linux-gnu/libc.so.6 > No symbol table info available. > #14 0x0000000000000000 in ?? () > No symbol table info available. > > -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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