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(ITS#7299) Memory leaks when using ldapmodify to add members to groupOfNames objectclass

Full_Name: Jan Synacek
Version: git (c73ec15)
OS: linux-fedora17
URL: http://jsynacek.fedorapeople.org/openldap/leak/openldap-mmr-leak.tar.gz
Submission from: (NULL) (

I'm using a 2-node mmr setup on my local machine - configuration files and
'uploader' scripts are provided in the archive.

1) I have the two nodes running.
2) Execute run.sh (only a wrapper for ldapusradm.sh) and start monitoring
slapd's memory usage.
3) After some time (at about 2k users on my system), slapd consumes a large
amount of memory which is still growing

Note that not using ldapmodify to add members to 'cn=users,dc=yes,dc=my', but
using it e.g. for modifying each user's email, does NOT result in any memory

I have also created a massif output using valgrind's massif tool:

I found a very similar bug (#7292), but I'm not sure if it's related.