I checked the apport duplicates database and didn't find any crashes with this information.
-- You received this bug notification because you are a member of DX Packages, which is subscribed to libappindicator in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1122596 Title: Race condition in app_indicator_init() causes application crash Status in Libappindicator: Fix Committed Status in “libappindicator” package in Ubuntu: Fix Released Status in “libappindicator” source package in Precise: Fix Committed Bug description: app_indicator_init() in app-indicator.c calls g_bus_get() before setting self->priv. This creates a race condition where the bus_creation() callback can execute while self->priv still contains garbage. Suggested fix is to set self->priv before calling g_bus_get(). diff -ruN libappindicator-0.4.92/src/app-indicator.c libappindicator-0.4.92.new/src/app-indicator.c --- libappindicator-0.4.92/src/app-indicator.c 2012-03-21 11:11:43.967367303 -0700 +++ libappindicator-0.4.92.new/src/app-indicator.c 2013-02-07 13:51:54.773720789 -0800 @@ -611,6 +611,8 @@ priv->sec_activate_target = NULL; priv->sec_activate_enabled = FALSE; + self->priv = priv; // Needs to be set BEFORE calling g_bus_get so our handler can read it. + /* Start getting the session bus */ g_object_ref(self); /* ref for the bus creation callback */ g_bus_get(G_BUS_TYPE_SESSION, NULL, bus_creation, self); @@ -618,8 +620,6 @@ g_signal_connect(G_OBJECT(gtk_icon_theme_get_default()), "changed", G_CALLBACK(theme_changed_cb), self); - self->priv = priv; - return; } ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: libappindicator1 (not installed) ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30 Uname: Linux 3.2.0-32-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 Date: Mon Feb 11 17:20:25 2013 InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20121016) MarkForUpload: True ProcEnviron: LC_CTYPE=en_US.UTF-8 TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/zsh SourcePackage: libappindicator UpgradeStatus: No upgrade log present (probably fresh install) [Impact] This bug was the #2 cause of crashes in the Steam client. I believe this meets the SRU criteria: "Bugs which do not fit under above categories, but (1) have an obviously safe patch and (2) affect an application rather than critical infrastructure packages (like X.org or the kernel)." [Test Case] As this is a race condition it is difficult to reproduce. However we have many crashdumps with a SIGSEGV referencing a garbage self->priv pointer in bus_creation(). After applying this fix, the crashes stopped. [Regression Potential] Low To manage notifications about this bug go to: https://bugs.launchpad.net/libappindicator/+bug/1122596/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp
