compiz crashed with SIGSEGV in CompWindow::move()

[Helge Jung]

When moving an empathy window some fancy window-resize bubbles appeared at the side of the window and did not respond at all - like the rest of the whole desktop. Several seconds after, I suppose some watchdog stepped in and killed unity.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity 4.24.0-0ubuntu2b1
ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
Uname: Linux 3.0.0-13-generic x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Mon Dec 12 01:14:17 2011
Disassembly: => 0x80000001d: Cannot access memory at address 0x80000001d
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901)
ProcCmdline: compiz
SegvAnalysis:
 Segfault happened at: 0x80000001d: Cannot access memory at address 0x80000001d
 PC (0x80000001d) not located in a known VMA region (needed executable region)!
SegvReason: executing unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 ?? ()
 CompWindow::move(int, int, bool) ()
 GestureEngine::OnDragUpdate(GeisAdapter::_GeisDragData*) () from /usr/lib/compiz/libunityshell.so
 GeisAdapter::GestureUpdate(void*, unsigned int, unsigned int, unsigned long, GeisGestureAttr*) () from /usr/lib/compiz/libunityshell.so
 ?? () from /usr/lib/libutouch-geis.so.1
Title: compiz crashed with SIGSEGV in CompWindow::move()
UpgradeStatus: Upgraded to oneiric on 2011-10-15 (57 days ago)
UserGroups: adm admin cdrom chipcard dialout lpadmin plugdev sambashare vboxusers

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 CompWindow::move (this=0x5d64120, dx=38, dy=5, immediate=false) at /build/buildd/compiz-0.9.6+bzr20110929/src/window.cpp:2183
 OnDragUpdate (data=<optimized out>, this=0x4167ce0) at /build/buildd/unity-4.24.0/plugins/unityshell/src/GestureEngine.cpp:169
 GestureEngine::OnDragUpdate (this=0x4167ce0, data=<optimized out>) at /build/buildd/unity-4.24.0/plugins/unityshell/src/GestureEngine.cpp:151
 emit (_A_a1=@0x7fff9ebf7798, impl=<optimized out>) at /usr/include/sigc++-2.0/sigc++/signal.h:1010

[Bilal Akhtar (bilalakhtar)]

From the stacktrace, it seems like a 3 finger drag was registered by Unity over a window and compiz was given the command to move the window.

Did you mistakenly make that 3 finger tap/drag over the Empathy notification? That could explain a lot about the crash itself.

[Helge Jung (youngage)]

Yes, that could be.

I just tried it out, when using three fingers on my touchpad to move a window these bubbles appear - I did not know these bubbles and did not know how to trigger them. I cannot reproduce the crash itself, though.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Omer Akram (om26er)]

Thanks for taking time to report this bug and helping to make ubuntu better. Its been a while since this bug was reported, there have been alot of changes in Unity since then. Can you please test with Ubuntu 12.04 with all updates installed and let us know if the issue is still there.

[Launchpad Janitor (janitor)]

[Expired for notify-osd (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for unity (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for notify-osd (Ubuntu) because there has been no activity for 60 days.]