general protection fault when deleting members from a large group (mdb)

["Mundry, Marvin" <Marvin.Mundry@uni-hamburg.de>]

Hi,
i was trying to remove all members from a group initially having  48428 members one by one.

i.e.:

dn: cn=students,ou=groups,dc=university,dc=com
changetype: modify
delete: member
member: cn=user1,ou=users,dc=uni-hamburg,dc=de

dn: cn=students,ou=groups,dc=university,dc=com
changetype: modify
delete: member
member: cn=user2,ou=users,dc=uni-hamburg,dc=de
[...]

after some time ldapmodify stops as the slapd stops running. In the syslog i see the following message:

Nov  3 15:05:45 oscar slapd[11040]: conn=1000 op=133 MOD dn="cn=students,ou=groups,dc=university,dc=com"
Nov  3 15:05:45 oscar slapd[11040]: conn=1000 op=133 MOD attr=member
Nov  3 15:05:45 oscar slapd[11040]: conn=1000 op=134 MOD dn="cn=students,ou=groups,dc=university,dc=com"
Nov  3 15:05:45 oscar slapd[11040]: conn=1000 op=134 MOD attr=member
Nov  3 15:05:45 oscar slapd[11040]: conn=1000 op=133 RESULT tag=103 err=0 text=
Nov  3 15:05:45 oscar kernel: [21207.720483] slapd[11045] general protection ip:7fae665cbc1f sp:7faded9c9fc0 error:0 in back_mdb-2.4.so.2.8.5[7fae665a5000+30000]


am i doing something wrong or is there a bug in my slapd?

i am running openldap-2.4.33 on ubuntu 12.10, compiled with:
--enable-dynamic=yes --enable-syslog=yes --enable-slapd=yes --enable-dynacl=yes --enable-crypt=yes --enable-modules=yes --enable-rewrite=yes --enable-bdb=mod --enable-hdb=mod --enable-ldap=mod --enable-mdb=mod --enable-meta=mod --enable-monitor=mod --enable-overlays=mod --with-tls=openssl


Best regards,

Marvin Mundry