[Bug 1154370] Re: [precise SRU] crash due to improper handling of "/" in GSettings

[Brian Murray]

Hello Ryan, or anyone else affected,

Accepted glib2.0 into precise-proposed. The package will build now and
be available at
http://launchpad.net/ubuntu/+source/glib2.0/2.32.4-0ubuntu1 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!

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1154370

Title:
  [precise SRU] crash due to improper handling of "/" in GSettings

Status in “glib2.0” package in Ubuntu:
  Confirmed

Bug description:
  GSettings in GLib 2.32.3 has a bug where the "changed" signal is
  emitted for child settings objects as if they were keys ending with
  "/".

  That was fixed upstream and merged into the glib-2-32 stable branch
  here:
  https://git.gnome.org/browse/glib/commit/?h=glib-2-32&id=e6f659a898595ba944bd02f0509b14694d1c26e7

  GLib 2.32.4 was since released and contains the fix.


  This fix is needed because there exists software (muffin) that
  contains code along these lines:

  
  void
  change_event_handler (GSettings *settings, const gchar *key, gpointer user_data)
  {
    ...
    g_settings_get_value (settings, key);
    ...
  }

  and it's invalid to pass a key containing "/" to
  g_settings_get_value() (causing crashes).

  This only happens when entire paths are reset (such as when running
  'dconf update').  That makes the issue relatively rare but it's
  affecting corporate deployments (Google, specifically).

  We should either do an SRU with just the patch linked to above to
  (ideally) QA and SRU the entire GLib 2.32.4 release to precise.

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