compiz crashed with SIGSEGV in g_object_get_qdata()

[Chris-topher]

Binary package hint: unity

Just a random crash after pressing the super (windows) key to see the labels. Worked correctly the very next time. Reported with apport.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.6.8-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-7.38-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
CrashCounter: 1
Date: Fri Mar 25 21:50:22 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7faf357d1260 <g_object_get_qdata+32>: cmpq $0x50,(%rax)
 PC (0x7faf357d1260) ok
 source "$0x50" ok
 destination "(%rax)" (0x500000000) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 g_object_get_qdata () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 pango_ot_ruleset_get_for_description () from /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/pango/1.6.0/modules/pango-basic-fc.so
 pango_shape () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
Title: compiz crashed with SIGSEGV in g_object_get_qdata()
UpgradeStatus: Upgraded to natty on 2011-03-26 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 g_object_get_qdata (object=<value optimized out>, quark=882) at /build/buildd/glib2.0-2.28.4/./gobject/gobject.c:2804
 pango_ot_ruleset_get_for_description (info=0x1000060, desc=0x7fffa63acb00) at /build/buildd/pango1.0-1.28.3/./pango/pango-ot-ruleset.c:124
 basic_engine_shape (engine=<value optimized out>, font=0x1843170, text=0x25f3d40 "Search", length=<value optimized out>, analysis=0x1a91e50, glyphs=0x22db720) at /build/buildd/pango1.0-1.28.3/./modules/basic/basic-fc.c:209
 pango_shape (text=0x25f3d40 "Search", length=6, analysis=0x1a91e50, glyphs=0x22db720) at /build/buildd/pango1.0-1.28.3/./pango/shape.c:55
 shape_run (line=0x19bc4f0, state=0x7fffa63acdc0, item=0x1a91e40) at /build/buildd/pango1.0-1.28.3/./pango/pango-layout.c:3124

[Neil J. Patel (njpatel)]

I believe this is fixed with the attached branch. If it still occurs with Unity 3.8.4 (released tomorrow), then please re-open, thanks.

[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.
    - [fglrx] compiz crashed with SIGSEGV in nux::IOpenGLSurface::UnlockRect()
      (LP: #685682)
    - SIGSEGV in g_atomic_int_get (LP: #688803)
    - unity-panel-service crashed with SIGSEGV in bamf_factory_view_for_path()
      (LP: #717684)
    - New window tracking system breaks in the case where windows try to
      restack relative to destroyed windows that were never mapped
      (LP: #723014)
    - Numpad 'Enter' doesn't work on highlighted items in dash, places-files and
      places-apps (LP: #741615)
    - compiz crashed with SIGSEGV in free() (LP: #738864)
    - compiz crashed with SIGSEGV in g_closure_invoke() (LP: #741674)
    - compiz crashed with SIGSEGV in CompWindow::id() (LP: #742028)
    - Windows that reparent away from the root before they are mapped can
      cause other windows to become invisible (and compiz to crash)
      (LP: #743011)
    - compiz crashed with SIGABRT in raise() (LP: #743414)
    - compiz crashed with SIGSEGV in g_object_get_qdata() (LP: #742905)
    - compiz crashed with SIGSEGV in g_closure_invoke() (LP: #748033)
    - compiz crashed with SIGSEGV in CompScreen::dpy() (LP: #751372)
    - compiz crashed with SIGABRT in __kernel_vsyscall() (LP: #744867)
    - unity-window-decorator crashed with SIGSEGV in gdk_window_get_events()
      (LP: #725284)
    - Missing icons in app launcher (LP: #728393)
    - Multiple quick clicks on launcher icon with multiple windows completely
      crashes Unity (LP: #731790)
    - Add a test case for invisible windows regressions (LP: #736876)
    - Re-sync with xquerytree to avoid stacking order issues (LP: #740465)
    - Wrong window moves (LP: #741656)
    - compiz crashed with SIGSEGV in g_cclosure_marshal_VOID__VOID()
      (LP: #742280)
    - panel superposition (LP: #742859)
    - unity-window-decorator doesn't start on secondary X session
      (LP: #730495)
    - Unity Launcher stops autohiding and is not responsive (LP: #744325)
    - dash categories dropdown menu leaves "ghost" on desktop (LP: #746800)
    - new dialogs open close enough of the launcher to make hide (LP: #747302)
    - dnd from the application place to the launcher works only once
      (LP: #747316)
    - compiz crashed with SIGSEGV in CompWindow::id() while opening tcl/tk
      interface of R (LP: #747439)
    - minimize animates window fading to the top left corner (ubuntu symbol)
      (LP: #747765)
    - Spread - Clicking on a app icon to spread the windows must always show
      all the windows, regardless of whether or not some of the windows are
      minimised (LP: #750349)
    - Launcher - Show visual de-coupling of Launcher app icons (LP: #751196)
    - unity-window-decorator crashed with SIGSEGV in event_filter_func()
      (LP: #748317)
    - Pressing Super-W to switch windows also presents Dash (LP: #753453)
    - Don't create windows over the launcher (LP: #688816)
    - Unity Grid is broken for multi-monitor setups (LP: #709221)
    - F10 key does not move focus to indicators when on the desktop.
      (LP: #727548)
    - dynamic ...