compiz crashed with SIGSEGV in nux::WindowCompositor::DndEventCycle()

[Daniel Winzen]

I was watching a video on youtube with firefox and using some other programs suddenly this crash occurred and apport came up.

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: compiz-core 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
ProcVersionSignature: Ubuntu 3.9.0-7.15-generic 3.9.7
Uname: Linux 3.9.0-7-generic x86_64
NonfreeKernelModules: fglrx
.tmp.unity.support.test.0:

ApportVersion: 2.10.2-0ubuntu2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CrashCounter: 1
Date: Mon Jun 24 18:10:41 2013
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
DkmsStatus:
 fglrx, 13.101, 3.9.0-6-generic, x86_64: installed
 fglrx, 13.101, 3.9.0-7-generic, x86_64: installed
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M] [1002:68c1] (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Mobility Radeon HD 5650 [1025:0379]
InstallationDate: Installed on 2013-02-27 (117 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130226)
MachineType: Packard Bell EasyNote LM85
MarkForUpload: True
ProcCmdline: compiz
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.9.0-7-generic root=UUID=860ee3d0-2395-44d7-a861-e5341debdde4 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7fc1bb3dd487 <_ZN3nux16WindowCompositor13DndEventCycleERNS_5EventE+263>: mov (%rax),%rax
 PC (0x7fc1bb3dd487) ok
 source "(%rax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 nux::WindowCompositor::DndEventCycle(nux::Event&) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
 nux::WindowCompositor::ProcessEvent(nux::Event&) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
 nux::WindowThread::DoProcessEvent(nux::Event&) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
 nux::nux_event_dispatch(_GSource*, int (*)(void*), void*) () from /usr/lib/x86_64-linux-gnu/libnux-4.0.so.0
 g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: compiz crashed with SIGSEGV in nux::WindowCompositor::DndEventCycle()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom debian-tor dip lpadmin plugdev sambashare sudo
dmi.bios.date: 04/28/2011
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.26
dmi.board.asset.tag: No Asset Tag
dmi.board.name: SJV71_CP
dmi.board.vendor: Packard Bell
dmi.board.version: V1.26
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Packard Bell
dmi.chassis.version: V1.26
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.26:bd04/28/2011:svnPackardBell:pnEasyNoteLM85:pvrV1.26:rvnPackardBell:rnSJV71_CP:rvrV1.26:cvnPackardBell:ct10:cvrV1.26:
dmi.product.name: EasyNote LM85
dmi.product.version: V1.26
dmi.sys.vendor: Packard Bell
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.45-2ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.3-0ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.3-0ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu13
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.8-0ubuntu1
xserver.bootTime: Mon Jun 24 13:39:21 2013
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu13
xserver.video_driver: fglrx

[Apport retracing service (apport)]

StacktraceTop:
 nux::WindowCompositor::DndEventCycle (this=<optimized out>, event=...) at ./WindowCompositor.cpp:278
 nux::WindowCompositor::ProcessEvent (this=0x2320810, event=...) at ./WindowCompositor.cpp:1157
 nux::WindowThread::DoProcessEvent (this=<optimized out>, event=...) at ./WindowThread.cpp:708
 nux::nux_event_dispatch (user_data=0x1e6f740) at ./MainLoopGLib.cpp:133
 ?? ()

[Launchpad Janitor (janitor)]

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

[peter swain (swine)]

Perhaps I've found a simpler way to reproduce the issue:
Using nautilus, I dragged the only object in ~/Desktop (a folder) into ~/Documents.
Not yet sure if it's repeatable, but it might give insight into the trigger, if root cause is not already obvious.

[peter swain (swine)]

Nope, not 100% repeatable with the nautilus drag - I just tried again & it worked w/o crash.

[SlugiusRex (slugiusrex)]

I just experienced the same issue - was attempting to drag item from ~/Desktop onto a VBox shared folder in /media/sf_*******

[Will Cooke (willcooke)]

As part of the big bug clear up for 16.04 LTS I am marking this bug as Wont Fix.
These types of crasher are better handled by errors.ubutnu.com which can collate similar crash reports to help us identify persitent bugs rather than one-off crashes.
Sorry we are not able to help with this specific issue. If you are still experiencing this crash, please re-open the bug and add the tag "desktop-bugscrub-reopened". See https://wiki.ubuntu.com/BigDesktopBugScrub for more information.