Hi, I'm using OpenLDAP debian package from wheezy-backports (version 2.4.31+really2.4.40+dfsg) which is a 2.4.40 but backported I think under another version number to allow the jessie package to execute its migration when upgrade time will come. When trying to initialize a new DB by loading an LDIF file using ldapvi, looking like that: add dc=coin2,dc=fr objectClass: organization objectClass: dcObject objectClass: eduOrg objectClass: supannOrg dc: coin2 o: whatever supannEtablissement: {UAI}ccc add ou=people,dc=coin2,dc=fr objectClass: organizationalUnit ou: people add uid=admin,ou=people,dc=coin2,dc=fr objectClass: inetOrgPerson objectClass: eduPerson objectClass: supannPerson uid: admin cn: Administrateur annuaire displayName: Administrateur annuaire givenName: Administrateur sn: annuaire supannListeRouge: TRUE userPassword: xxxx supannEtablissement: {UAI}COIN It blocks on adding the ou=people. After setting loglever to 255 I got my syslog filled with such messages, soon filling the virtual machine virtual disk: Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_search: 1 scope not okay Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_search: 2 scope not okay Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_search: 3 scope not okay etc... The log of the query finishing like that is: Jun 2 02:34:26 ldap1-psl slapd[12159]: connection_get(15) Jun 2 02:34:26 ldap1-psl slapd[12159]: connection_get(15): got connid=1001 Jun 2 02:34:26 ldap1-psl slapd[12159]: connection_read(15): checking for input on id=1001 Jun 2 02:34:26 ldap1-psl slapd[12159]: op tag 0x68, time 1433205266 Jun 2 02:34:26 ldap1-psl slapd[12159]: conn=1001 op=9 do_add Jun 2 02:34:26 ldap1-psl slapd[12159]: conn=1001 op=9 do_add: dn (ou=people,dc=coin2,dc=fr) Jun 2 02:34:26 ldap1-psl slapd[12159]: >>> dnPrettyNormal: <ou=people,dc=coin2,dc=fr> Jun 2 02:34:26 ldap1-psl slapd[12159]: <<< dnPrettyNormal: <ou=people,dc=coin2,dc=fr>, <ou=people,dc=coin2,dc=fr> Jun 2 02:34:26 ldap1-psl slapd[12159]: ==> unique_add <ou=people,dc=coin2,dc=fr> Jun 2 02:34:26 ldap1-psl slapd[12159]: ==> unique_search (|(objectClass=organizationalUnit)(ou=people)) Jun 2 02:34:26 ldap1-psl slapd[12159]: str2filter "(|(objectClass=organizationalUnit)(ou=people))" Jun 2 02:34:26 ldap1-psl slapd[12159]: begin get_filter Jun 2 02:34:26 ldap1-psl slapd[12159]: OR Jun 2 02:34:26 ldap1-psl slapd[12159]: begin get_filter_list Jun 2 02:34:26 ldap1-psl slapd[12159]: begin get_filter Jun 2 02:34:26 ldap1-psl slapd[12159]: EQUALITY Jun 2 02:34:26 ldap1-psl slapd[12159]: end get_filter 0 Jun 2 02:34:26 ldap1-psl slapd[12159]: begin get_filter Jun 2 02:34:26 ldap1-psl slapd[12159]: EQUALITY Jun 2 02:34:26 ldap1-psl slapd[12159]: end get_filter 0 Jun 2 02:34:26 ldap1-psl slapd[12159]: end get_filter_list Jun 2 02:34:26 ldap1-psl slapd[12159]: end get_filter 0 Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_search Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_dn2entry("dc=coin2,dc=fr") Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_dn2id("dc=coin2,dc=fr") Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_dn2id: got id=0x1 Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_entry_decode: Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_entry_decode Jun 2 02:34:26 ldap1-psl slapd[12159]: => access_allowed: search access to "dc=coin2,dc=fr" "entry" requested Jun 2 02:34:26 ldap1-psl slapd[12159]: <= root access granted Jun 2 02:34:26 ldap1-psl slapd[12159]: => access_allowed: search access granted by manage(=mwrscxd) Jun 2 02:34:26 ldap1-psl slapd[12159]: search_candidates: base="dc=coin2,dc=fr" (0x00000001) scope=-1 Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_filter_candidates Jun 2 02:34:26 ldap1-psl slapd[12159]: #011OR Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_list_candidates 0xa1 Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_filter_candidates Jun 2 02:34:26 ldap1-psl slapd[12159]: #011EQUALITY Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_equality_candidates (objectClass) Jun 2 02:34:26 ldap1-psl slapd[12159]: => key_read Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_idl_fetch_key: [b49d1940] Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_index_read: failed (-30798) Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_equality_candidates: id=0, first=0, last=0 Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_filter_candidates: id=0 first=0 last=0 Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_filter_candidates Jun 2 02:34:26 ldap1-psl slapd[12159]: #011OR Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_list_candidates 0xa1 Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_filter_candidates Jun 2 02:34:26 ldap1-psl slapd[12159]: #011EQUALITY Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_equality_candidates (objectClass) Jun 2 02:34:26 ldap1-psl slapd[12159]: => key_read Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_idl_fetch_key: [9bee355f] Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_index_read: failed (-30798) Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_equality_candidates: id=0, first=0, last=0 Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_filter_candidates: id=0 first=0 last=0 Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_filter_candidates Jun 2 02:34:26 ldap1-psl slapd[12159]: #011EQUALITY Jun 2 02:34:26 ldap1-psl slapd[12159]: => mdb_equality_candidates (ou) Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_equality_candidates: (ou) not indexed Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_filter_candidates: id=-1 first=1 last=-1 Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_list_candidates: id=-1 first=1 last=-1 Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_filter_candidates: id=-1 first=1 last=-1 Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_list_candidates: id=-1 first=1 last=-1 Jun 2 02:34:26 ldap1-psl slapd[12159]: <= mdb_filter_candidates: id=-1 first=1 last=-1 Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_search_candidates: id=-1 first=1 last=-1 Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_search: 1 scope not okay Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_search: 2 scope not okay Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_search: 3 scope not okay Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_search: 4 scope not okay Jun 2 02:34:26 ldap1-psl slapd[12159]: mdb_search: 5 scope not okay etc... I don't know why it's doing a search on an add but seeing the message "(ou) not indexed" I though that maybe adding an equality index on this attribute would help, and effectively it did. Now the add ou=people passed, but it started looping again when adding the uid=admin entry. The infinite loop happen in server/slapd/back-mdb/search.c in mdb_search(). If you have any idea I can continue investigating or add debug logs. The debian package has the following patches applied over openldap 2.4.40: add-tlscacert-option-to-ldap-conf autogroup-makefile contrib-modules-use-dpkg-buildflags do-not-second-guess-sonames evolution-ntlm fix-build-top-mk getaddrinfo-is-threadsafe heimdal-fix index-files-created-as-root ITS6035-olcauthzregex-needs-restart.patch ITS7975-fix-mdb-onelevel-search.patch ITS8027-deref-reject-empty-attr-list.patch ITS8046-fix-vrFilter_free-crash.patch lastbind-makefile ldap-conf-tls-cacertdir ldapi-socket-place libldap-symbol-versions man-slapd no-AM_INIT_AUTOMAKE no-bdb-ABI-second-guessing pw-sha2-makefile sasl-default-path slapi-errorlog-file smbk5pwd-makefile switch-to-lt_dlopenadvise-to-get-RTLD_GLOBAL-set.diff wrong-database-location