desktop-packages team mailing list archive

[Timo Aaltonen <tjaalton@xxxxxxxxxx>]

Hello rumen, or anyone else affected,

Accepted lightdm into utopic-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/lightdm/1.12.3-0ubuntu1 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: lightdm (Ubuntu Utopic)
       Status: Triaged => Fix Committed

** Tags added: verification-needed

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/1190344

Title:
  Daemon end of session/greeter pipes not closed

Status in Light Display Manager:
  Fix Released
Status in Light Display Manager 1.10 series:
  Fix Released
Status in Light Display Manager 1.12 series:
  Fix Released
Status in Light Display Manager 1.2 series:
  Fix Released
Status in lightdm package in Ubuntu:
  Fix Released
Status in lightdm source package in Precise:
  Triaged
Status in lightdm source package in Trusty:
  Fix Committed
Status in lightdm source package in Utopic:
  Fix Committed
Status in lightdm source package in Vivid:
  Fix Released
Status in Fedora:
  Unknown

Bug description:
  [Impact]
  LightDM doesn't close the server side end of the pipes used to communicate with session processes and greeters. This means each session/greeter that is created leaks two file descriptors eventually leading to the system stopping it from creating new pipes.

  [Test Case]
  1. Start LightDM
  2. Check how many pipes are open
  # lsof -p {lightdm_pid} | grep FIFO | wc -l
  3. Create sessions by either cycling between users in Unity Greeter or logging in and out
  4. Check how many pipes exist using step 2.
  Expected result:
  No more pipes should be open
  Observed result:
  Many pipes remain open

  [Regression Potential]
  Low. Fix is to close pipes when finished with them. Tested with regression tests.

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