compiz crashed with SIGSEGV in async_wrapper_callback() from g_simple_async_result_complete() from _g_simple_async_result_complete_with_cancellable() from unmount_reply()

[Martin Pitt]

This seems similar to the already fixed bug 1055812, but I get it on today's raring. This crash happened when unmounting a PtP camera through right-click "Unmount" in the Launcher.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: compiz-core 1:0.9.9~daily13.01.21-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-1.5-generic 3.8.0-rc4
Uname: Linux 3.8.0-1-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.8-0ubuntu2
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Tue Jan 22 11:48:11 2013
Disassembly: => 0x0: Cannot access memory at address 0x0
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:215a]
InstallationDate: Installed on 2012-07-12 (194 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120627)
MachineType: LENOVO 3323REG
MarkForUpload: True
PlymouthDebug: Error: [Errno 13] Keine Berechtigung: '/var/log/plymouth-debug.log'
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-1-generic root=UUID=8f327c01-56d7-401c-8bd1-5442854e3c85 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x0: Cannot access memory at address 0x0
 PC (0x00000000) not located in a known VMA region (needed executable region)!
SegvReason: executing NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 ?? ()
 async_wrapper_callback (source_object=<optimized out>, res=<optimized out>, user_data=0x456e780) at gproxyshadowmount.c:315
 g_simple_async_result_complete (simple=0x2c968e0) at /build/buildd/glib2.0-2.35.4/./gio/gsimpleasyncresult.c:777
 _g_simple_async_result_complete_with_cancellable (result=<optimized out>, cancellable=<optimized out>) at gvfsdaemondbus.c:736
 unmount_reply (proxy=<optimized out>, res=<optimized out>, user_data=user_data@entry=0x15e83c0) at gdaemonmount.c:221
Title: compiz crashed with SIGSEGV in async_wrapper_callback()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo utah
dmi.bios.date: 06/07/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6QET46WW (1.16 )
dmi.board.name: 3323REG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6QET46WW(1.16):bd06/07/2010:svnLENOVO:pn3323REG:pvrThinkPadX201:rvnLENOVO:rn3323REG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 3323REG
dmi.product.version: ThinkPad X201
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.9~daily13.01.21-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.41-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.1-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.1-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.1.901-0ubuntu1pitti1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.0.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.19-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.6-0ubuntu1
xserver.bootTime: Tue Jan 22 07:08:43 2013
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.1.901-0ubuntu1
xserver.video_driver: intel

[Martin Pitt (pitti)]

Tentatively moving to Unity.

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 async_wrapper_callback (source_object=<optimized out>, res=<optimized out>, user_data=0x456e780) at gproxyshadowmount.c:315
 g_simple_async_result_complete (simple=0x2c968e0) at /build/buildd/glib2.0-2.35.4/./gio/gsimpleasyncresult.c:777
 _g_simple_async_result_complete_with_cancellable (result=<optimized out>, cancellable=<optimized out>) at gvfsdaemondbus.c:736
 unmount_reply (proxy=<optimized out>, res=<optimized out>, user_data=user_data@entry=0x15e83c0) at gdaemonmount.c:221

[Launchpad Janitor (janitor)]

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

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity - 6.12.0daily13.02.04.1-0ubuntu1

---------------
unity (6.12.0daily13.02.04.1-0ubuntu1) raring; urgency=low

  * debian/control:
    - recommends indicator-sync so it gets installed by default
      (lp: #1053482)
    - recommends indicator-bluetooth as well (lp: #1111314)

  [ Łukasz 'sil2100' Zemczak ]
  * debian/control:
    - bump compiz build-dep due to the last ABI break

  [ Brandon Schaefer ]
  * [regression] Clicking on the indicators when the Dash is open no
    longer closes the Dash. (LP: #1109150)
  * [staging][raring] Dash Maximise/Restore button depends on the
    launcher icon size. (LP: #1101310)

  [ Romain Perier ]
  * The Dash closes when trying to switch to the Command lens (Alt+F2)
    (LP: #1019457)

  [ Marco Trevisan (Treviño) ]
  * Launcher can have smaller size on monitor resolution change (LP:
    #1105382)
  * Dragging down a window from the panel on an external monitor,
    restores it at wrong offset (LP: #1104043)
  * [regression] Alt+Tab/Alt+grave brings other window to the front but
    loses focus entirely. (LP: #1111620)
  * Quicklist items need a way to be ellipsized (LP: #1111471)

  [ Charles Kerr <email address hidden>, Andrea Azzarone ]
  * the GObject subclasses in tests/ don't dispose() properly (LP:
    #986875)

  [ Nicolas d'Offay ]
  * Speed up dash blur (LP: #1102410)

  [ Manuel de la Pena ]
  * API changes to FindKeyFocusArea in the Preview class stops more
    complicated previous fom setting the correct focus (LP: #1102387)

  [ MC Return ]
  * Wrong description in Dconf key
    com.canonical.unity.launcher.favorites (LP: #1112560)
  * Keyboard shortcut overlay says Ctrl+Super+Down "minimises" the
    current window, but it doesn't (LP: #966099)

  [ Andrea Azzarone ]
  * unmounting any gvfs-mounted device from unity menu crashes compiz
    (LP: #1111389)
  * compiz crashed with SIGSEGV in async_wrapper_callback() from
    g_simple_async_result_complete() from
    _g_simple_async_result_complete_with_cancellable() from
    unmount_reply() (LP: #1102926)

  [ Łukasz 'sil2100' Zemczak ]
  * SwitcherControllerImpl autopilot test failures in unity -
    6.12.0daily13.01.29.2-0ubuntu1 (LP: #1109192)

  [ Automatic PS uploader ]
  * Automatic snapshot from revision 3117
 -- Automatic PS uploader <email address hidden> Mon, 04 Feb 2013 09:59:13 +0000