overlay rwm crashing server

[Eric <ef87@yahoo.com>]

Hello,

OpenLDAP v2.3.42

I have found that using "overlay rwm" along with "database meta", where "database meta" refers to a Windows Active Directory server, causes OpenLDAP to crash with the following error:

-- client sends --

ldapsearch -x -W -D "cn=ef87,dc=ad,dc=company,dc=com" -b "ou=users,dc=ad,dc=company,dc=com"

-- server crashes --
...
PROXIED attributeDescription "MSEXCHMAILBOXGUID" inserted.
ber_scanf fmt ([W]) ber:
ber_scanf fmt ({m) ber:
slapd: attr.c:141: attr_dup: Assertion `j == i' failed.

# slapd.conf
...
overlay         rwm

database        meta
suffix          "dc=ad,dc=company,dc=com"
uri             "ldap://dc.example.com/dc=ad,dc=company,dc=com
suffixmassage   "dc=ad,dc=company,dc=com" dc=ad,dc=example,dc=com"

idassert-bind   bindmethod="simple"
                binddn="cn=ProxyUser,dc=ad,dc=example,dc=com"
                credentials="secret"
                mode="self"

map objectclass posixaccount        user
map objectclass posixgroup          group
map attribute   uid                 samaccountname
map attribute   uniquemember        member
map attribute   mail                userPrincipalName
map attribute   maillocaladdress    proxyaddresses
#map attribute  *
...

The error can be avoided by either 1.) removing the "overlay rwm" from slapd.conf, 2.) move "overlay rwm" below a second database definition, 3.) use "map attribute" in the "database meta" section to select only certain attributes.

I would certainly like the two to work together in order to perform rewrites at a global level (and not have to configure my slapd.conf to work around a server crash).

Thanks,
ef