touch-packages team mailing list archive

["Stephen M. Webb" <stephen.webb@xxxxxxxxxxxxx>]

** Description changed:

- Description:	Ubuntu Utopic Unicorn (development branch)
- Release:	14.10
+ [Impact]
  
- compiz:
-   Geïnstalleerd: 1:0.9.12+14.10.20140812-0ubuntu1
-   Kandidaat:     1:0.9.12+14.10.20140812-0ubuntu1
-   Versietabel:
-  *** 1:0.9.12+14.10.20140812-0ubuntu1 0
-         500 http://nl.archive.ubuntu.com/ubuntu/ utopic/main i386 Packages
-         100 /var/lib/dpkg/status
+ An occasional unpredictable crash in the Unity shell occurs during a
+ drag-and-drop operation.
  
- ProblemType: Crash
- DistroRelease: Ubuntu 14.10
- Package: compiz-core 1:0.9.12+14.10.20140812-0ubuntu1
- ProcVersionSignature: Ubuntu 3.16.0-11.16-generic 3.16.1
- Uname: Linux 3.16.0-11-generic i686
- .tmp.unity.support.test.0:
-  
- ApportVersion: 2.14.7-0ubuntu1
- Architecture: i386
- CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
- CompositorRunning: compiz
- CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
- CompositorUnredirectFSW: true
- CurrentDesktop: Unity
- Date: Mon Sep  1 12:30:05 2014
- DistUpgraded: Fresh install
- DistroCodename: utopic
- DistroVariant: ubuntu
- ExecutablePath: /usr/bin/compiz
- GraphicsCard:
-  Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller [8086:a011] (prog-if 00 [VGA controller])
-    Subsystem: ASUSTeK Computer Inc. Device [1043:83ac]
-    Subsystem: ASUSTeK Computer Inc. Device [1043:83ac]
- InstallationDate: Installed on 2014-08-29 (2 days ago)
- InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha i386 (20140826)
- MachineType: ASUSTeK Computer INC. 1001PX
- ProcCmdline: compiz
- ProcEnviron:
-  PATH=(custom, no user)
-  LANGUAGE=nl_NL
-  XDG_RUNTIME_DIR=<set>
-  LANG=nl_NL.UTF-8
-  SHELL=/bin/bash
- ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-11-generic root=UUID=e2155ee3-e907-44c0-b6e7-f0608f136055 ro quiet splash vt.handoff=7
- SegvAnalysis:
-  Segfault happened at: 0xb0d08ed1 <_ZN3nux16WindowCompositor13DndEventCycleERNS_5EventE+257>:	mov    (%edx),%ecx
-  PC (0xb0d08ed1) ok
-  source "(%edx)" (0x00000000) not located in a known VMA region (needed readable region)!
-  destination "%ecx" ok
- SegvReason: reading NULL VMA
- Signal: 11
- SourcePackage: compiz
- StacktraceTop:
-  nux::WindowCompositor::DndEventCycle(nux::Event&) () from /usr/lib/i386-linux-gnu/libnux-4.0.so.0
-  nux::WindowCompositor::ProcessEvent(nux::Event&) () from /usr/lib/i386-linux-gnu/libnux-4.0.so.0
-  nux::WindowThread::DoProcessEvent(nux::Event&) () from /usr/lib/i386-linux-gnu/libnux-4.0.so.0
-  nux::WindowThread::ProcessEvent(nux::Event&) () from /usr/lib/i386-linux-gnu/libnux-4.0.so.0
-  nux::nux_event_dispatch(_GSource*, int (*)(void*), void*) () from /usr/lib/i386-linux-gnu/libnux-4.0.so.0
- Title: compiz crashed with SIGSEGV in nux::WindowCompositor::DndEventCycle()
- UpgradeStatus: No upgrade log present (probably fresh install)
- UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
- dmi.bios.date: 02/18/2011
- dmi.bios.vendor: American Megatrends Inc.
- dmi.bios.version: 1201
- dmi.board.asset.tag: To Be Filled By O.E.M.
- dmi.board.name: 1001PX
- dmi.board.vendor: ASUSTeK Computer INC.
- dmi.board.version: x.xx
- dmi.chassis.asset.tag: 0x00000000
- dmi.chassis.type: 10
- dmi.chassis.vendor: ASUSTeK Computer INC.
- dmi.chassis.version: x.x
- dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1201:bd02/18/2011:svnASUSTeKComputerINC.:pn1001PX:pvrx.x:rvnASUSTeKComputerINC.:rn1001PX:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
- dmi.product.name: 1001PX
- dmi.product.version: x.x
- dmi.sys.vendor: ASUSTeK Computer INC.
- version.compiz: compiz 1:0.9.12+14.10.20140812-0ubuntu1
- version.libdrm2: libdrm2 2.4.56-1
- version.libgl1-mesa-dri: libgl1-mesa-dri 10.2.6-1ubuntu3
- version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
- version.libgl1-mesa-glx: libgl1-mesa-glx 10.2.6-1ubuntu3
- version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu9
- version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu1
- version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu1
- version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu1
- version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
- xserver.bootTime: Mon Sep  1 09:21:40 2014
- xserver.configfile: default
- xserver.errors:
-  intel: Failed to load module "dri3" (module does not exist, 0)
-  intel: Failed to load module "present" (module does not exist, 0)
- xserver.logfile: /var/log/Xorg.0.log
- xserver.outputs:
-  product id                                1001 
-  vendor                                     HSD
- xserver.version: 2:1.15.1-0ubuntu9
+ [Test Case]
+ 
+ Unfortunately it is not possible to reproduce this bug at will.
+ Apparently is is caused by an uninitialized pointer dereference that
+ only occurs in a timing-dependent manner.
+ 
+ Running a full autopilot test suite against the Unity desktop shell
+ reveals no new regressions.
+ 
+ [Regression Potential]
+ 
+ The code change effectively adds a test for a null pointer.  It is
+ possible that this might introduce a regression in drag-and-drop
+ functionality that previously relied on undefined behaviour to work when
+ it didn't crash.
+ 
+ [Other Info]
+ 
+ Fix was released with Ubuntu 14.10 and no new regressions have been
+ reported.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to nux in Ubuntu.
https://bugs.launchpad.net/bugs/1363959

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

Status in Nux:
  Fix Committed
Status in Nux trusty series:
  In Progress
Status in “nux” package in Ubuntu:
  Fix Released
Status in “nux” source package in Trusty:
  In Progress

Bug description:
  [Impact]

  An occasional unpredictable crash in the Unity shell occurs during a
  drag-and-drop operation.

  [Test Case]

  Unfortunately it is not possible to reproduce this bug at will.
  Apparently is is caused by an uninitialized pointer dereference that
  only occurs in a timing-dependent manner.

  Running a full autopilot test suite against the Unity desktop shell
  reveals no new regressions.

  [Regression Potential]

  The code change effectively adds a test for a null pointer.  It is
  possible that this might introduce a regression in drag-and-drop
  functionality that previously relied on undefined behaviour to work
  when it didn't crash.

  [Other Info]

  Fix was released with Ubuntu 14.10 and no new regressions have been
  reported.

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