** 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 Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1363959 Title: compiz crashed with SIGSEGV in nux::WindowCompositor::DndEventCycle() To manage notifications about this bug go to: https://bugs.launchpad.net/nux/+bug/1363959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
