polkit-kde-1 crashes randomly on logout

[Romain Perier]

Binary package hint: polkit-kde-1

Sometimes polkit-kde-authentication-agent-1 crashes on logout, look at the backtrace.
Apparently PolkitQt1::Agent::Session is called twice, which calls Session::Private::~Private() twice , resulting in a segfault due to g_object_unref() (try to get the reference from an already freed object).
Basically I think a workaround would be check if Private::d is already deleted. This is a workaround because technically a destructor should not be called twice, It does not make sense. (my interpretation may be wrong)

We should probably report this bug on upstream.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: polkit-kde-1 0.99.0-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic x86_64
Architecture: amd64
Date: Thu Mar 3 18:44:13 2011
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 LANGUAGE=fr_FR:en
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 LC_MESSAGES=fr_FR.utf8
 SHELL=/bin/bash
SourcePackage: polkit-kde-1
UpgradeStatus: Upgraded to natty on 2011-02-07 (24 days ago)

[Romain Perier (rperier)]

See https://bugs.kde.org/show_bug.cgi?id=265010

[Romain Perier (rperier)]

the first bug has been marked as duplicate, see https://bugs.kde.org/show_bug.cgi?id=258916

[Robert Simmons (rsimmons0)]

backtrace from my most recent crash of this type

[josephk (josephk-deactivatedaccount-deactivatedaccount)]

polkit-kde-1 systematically crashes on logout on oneiric AMD64 up to date

[Silviu C. (silviucc)]

This still happens on 11.10 64bit.

[Robert Simmons (rsimmons0)]

Still exists in 11.10 with the KDE 4.7.2 updates as well.

[LukasThyWalls (thywalls)]

Present in Oneiric with KDE 4.7.2

[Robert Simmons (rsimmons0)]

According to traffic on the upstream bug there looks to be a functional workaround to the the bug that fixes the crash. Can ubuntu pull in this workaround until a permanent fix is found?

[Robert Simmons (rsimmons0)]

Let me rephrase what I just said: This crash is now FIXED upstream. Any ideas as to when it will get pulled into Ubuntu?

[Maarten Bezemer (veger)]

There is a proposed release in https://bugs.launchpad.net/ubuntu/+source/polkit-qt-1/+bug/904245 for this problem

I suppose both reports should be merged?