Thanks for the pointer Brian, see SRU format below: [Impact]
* Effects of the bug on users The kdc process leaks memory which means the users will need to restart the service when enough time has passed. * Justification for backporting the fix to the stable release The kdc is a long lived process, which means this leak will eventually be hit by anyone. I would not regard the current package as "stable". * Explanation of how the upload fixes this bug https://github.com/heimdal/heimdal/issues/93 [Test Case] * Install heimdal-kdc package * Modify /etc/krb5.conf so you use the same machine for AS-REQ: --- [realms] YOUR.REALM = { kdc = your-local-machine.tld } --- * Add "test" user with password "test" kadmin -l --use-defaults test test@YOUR.REALM's Password: Verify password - test@YOUR.REALM's Password: * Note how much RAM is currently being used by the kdc process: --- # ps auxww | grep kdc | grep -v grep root 832 0.0 0.1 79948 2768 ? S 09:22 0:00 /usr/lib/heimdal-servers/kdc --config-file=/etc/heimdal-kdc/kdc.conf --- * Perform a bunch of requests against it: --- # for request in {1..20000}; do echo test | kinit --password-file=STDIN test@YOUR.REALM; done --- * Note how much RAM is used after the test has been completed: # ps auxww | grep kdc | grep -v grep root 832 2.1 0.4 85660 9104 ? S 09:22 0:27 /usr/lib/heimdal-servers/kdc --config-file=/etc/heimdal-kdc/kdc.conf --- * Install the new packages * Reboot the machine * Get a fresh RAM measurement: --- # ps auxww | grep kdc | grep -v grep root 864 0.0 0.1 79948 2764 ? S 11:01 0:00 /usr/lib/heimdal-servers/kdc --config-file=/etc/heimdal-kdc/kdc.conf --- * Run test again --- # for request in {1..20000}; do echo test | kinit --password-file=STDIN test@YOUR.REALM; done --- * Note that much less memory is used now: --- # ps auxww | grep kdc | grep -v grep root 864 1.8 0.1 79948 3468 ? S 11:01 0:27 /usr/lib/heimdal-servers/kdc --config-file=/etc/heimdal-kdc/kdc.conf --- -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to heimdal in Ubuntu. https://bugs.launchpad.net/bugs/1422359 Title: heimdal-kdc: kdc process leaks memory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/heimdal/+bug/1422359/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
