SIGSEGV in g_atomic_int_get

[Hernando Torque]

Binary package hint: unity

Got this when trying to unpin a launcher. Backtrace attached.

To reproduce:

* Copy /usr/share/applications/foo.desktop to ~/.local/share/applications (I used gcalctool)
* Start foo.desktop via the Ubuntu logo -> /usr/share/applications/
* Pin the running foo launcher and quit the application
=> the favorites now contain 'foo.desktop' (checked via gsettings get ...)
* Unpin the running foo launcher
=> Compiz crashes

The last messages I get on the console are:

** (<unknown>:12267): WARNING **: Unable to remove favorite '/usr/share/applications/gcalctool.desktop': Does not exist in favorites

(<unknown>:12267): GLib-CRITICAL **: g_variant_new_string: assertion `g_utf8_validate (string, -1, NULL)' failed

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: unity 3.2.6-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-8.21-generic 2.6.37-rc4
Uname: Linux 2.6.37-8-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
CompizPlugins: No value set for `/apps/compiz/general/allscreens/options/active_plugins'
Date: Sat Dec 11 00:25:31 2010
Lsusb:
 Bus 002 Device 002: ID 046d:c048 Logitech, Inc.
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 003: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
PciDisplay: 05:00.0 VGA compatible controller [0300]: nVidia Corporation NV43 [GeForce 6600 GT] [10de:0140] (rev a2) (prog-if 00 [VGA controller])
ProcEnviron:
 LANGUAGE=en_US.utf8
 LANG=en_US.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.37-8-generic root=UUID=025c4231-b78a-48bf-93e9-d20c5b5ce8e3 ro crashkernel=384M-2G:64M,2G-:128M quiet splash bootchart=disable acpi_enforce_resources=lax vga=792
ProcVersionSignature_: Ubuntu 2.6.37-8.21-generic 2.6.37-rc4
RelatedPackageVersions:
 xserver-xorg 1:7.5+6ubuntu3b1
 libgl1-mesa-glx 7.9+repack-1ubuntu3
 libdrm2 2.4.22-2ubuntu1
 xserver-xorg-video-intel 2:2.13.901-2ubuntu1
 xserver-xorg-video-ati 1:6.13.2-1ubuntu2
SourcePackage: unity
dmi.bios.date: 03/29/2006
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: LP NF4 Series
dmi.board.vendor: DFI Corp,LTD
dmi.board.version: 1.0
dmi.chassis.type: 3
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd03/29/2006:svn:pn:pvr:rvnDFICorp,LTD:rnLPNF4Series:rvr1.0:cvn:ct3:cvr:
system: distro = Ubuntu, architecture = i686, kernel = 2.6.37-8-generic

[Hernando Torque (htorque)]

Before the crash (directly after pinning), the launcher starts /usr/share/applications/foo.desktop.

After the crash (or a Compiz restart) the launcher starts ~/.local/share/applications/foo.desktop instead (even though the favorites just show 'foo.desktop'). If that's the case I can unpin the launcher without a crash.

Also, pinning and unpinning ~/.local/share/applications/foo.desktop doesn't cause any issues.

[Didier Roche-Tolomelli (didrocks)]

Even if the backtrace is not complete (did you installed debug symbols for bamf and unity?), there are enough info to reproduce the crash. Thanks Hernando :)

[Hernando Torque (htorque)]

As complete as I could get it.

[Hernando Torque (htorque)]

Still happening with unity 3.2.12-0ubuntu2.

[David Barth (dbarth)]

Still happening with 3.4.4-0ubuntu2.

I can reproduce the issue systematically with the konversation launcher. The trace is similar to Hernando's.

[Sebastien Bacher (seb128)]

bug #737656 seems similar

[David Barth (dbarth)]

It doesn't crash for me anymore.

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity - 3.8.4-0ubuntu1

---------------
unity (3.8.4-0ubuntu1) natty; urgency=low

  * New upstream release.
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