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[Eero-t-tamminen <1065657@xxxxxxxxxxxxxxxxxx>]

I see the Window handle leak also in Ubuntu 14.10.  With newer kernel &
HW, it once cause Compiz to be OOM-killed (see bug 1415926).

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https://bugs.launchpad.net/bugs/1065657

Title:
  compiz leaks window handles (and pixmaps?)

Status in Compiz:
  Triaged
Status in Compiz 0.9.8 series:
  Won't Fix
Status in compiz package in Ubuntu:
  Triaged

Bug description:
  Compiz leaks window handles when closing windows, according to
  xrestop.

  To reproduce:
  1) install xrestop ("apt-get install xrestop")
  2) In a terminal, launch xrestop. Keep it running, and observe the number of 'Wins' and amount of pixmap memory ('Pxm mem') associated with the Compiz process
  3) Open a new terminal (or any other) window. Observe that the number of windows had gone up by some amount. Opening a terminal window reliably results in exactly 3 extra window handles for the Compiz on my system.
  4) Close the window

  Expected results:
  After closing the terminal window, the number of window handles held by the compiz process returns to the level observed in step 2

  Actual results:
  The number of window handles does not decrease; Compiz retains the window handles for the closed window. It's reliably 3 window handles for each terminal window on my system. I haven't checked other window types (dialogs, etc).

  
  The above steps also produce a 1KB leak of pixmap memory on my system. I am not sure if this is related.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: compiz 1:0.9.8.4-0ubuntu2
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  NonfreeKernelModules: nvidia
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  304.43  Sun Aug 19 20:14:03 PDT 2012
   GCC version:  gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1)
  .proc.driver.nvidia.warnings.fbdev:
   Your system is not currently configured to drive a VGA console
   on the primary VGA device. The NVIDIA Linux graphics driver
   requires the use of a text-mode VGA console. Use of other console
   drivers including, but not limited to, vesafb, may result in
   corruption and stability problems, and is not supported.
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.6.1-0ubuntu3
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  Date: Thu Oct 11 15:04:36 2012
  DistUpgraded: 2012-08-07 11:19:37,876 DEBUG enabling apt cron job
  DistroCodename: quantal
  DistroVariant: ubuntu
  DkmsStatus:
   nvidia-current, 304.43, 3.5.0-17-generic, x86_64: installed
   virtualbox, 4.1.18, 3.5.0-14-generic, x86_64: installed
   virtualbox, 4.1.18, 3.5.0-15-generic, x86_64: installed
   virtualbox, 4.1.18, 3.5.0-16-generic, x86_64: installed
   virtualbox, 4.1.18, 3.5.0-17-generic, x86_64: installed
  GraphicsCard:
   NVIDIA Corporation G84 [GeForce 8600M GT] [10de:0407] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Apple Inc. Device [106b:00a0]
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Beta amd64 (20100901.1)
  JockeyStatus:
   kmod:nvidia_experimental_304 - Experimental NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
   kmod:nvidia_173 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
   kmod:nvidia_current_updates - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
   kmod:nvidia_173_updates - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
   kmod:nvidia_current - nvidia_current (Proprietary, Enabled, Not in use)
  MachineType: Apple Inc. MacBookPro3,1
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=4b3d81ed-fb5d-4946-97c0-ec537e1bfa3f ro quiet splash
  SourcePackage: compiz
  UpgradeStatus: Upgraded to quantal on 2012-08-07 (65 days ago)
  dmi.bios.date: 03/05/08
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP31.88Z.0070.B07.0803051658
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Mac-F4238BC8
  dmi.board.vendor: Apple Inc.
  dmi.board.version: PVT
  dmi.chassis.asset.tag: Asset Tag#
  dmi.chassis.type: 2
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-F4238BC8
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP31.88Z.0070.B07.0803051658:bd03/05/08:svnAppleInc.:pnMacBookPro3,1:pvr1.0:rvnAppleInc.:rnMac-F4238BC8:rvrPVT:cvnAppleInc.:ct2:cvrMac-F4238BC8:
  dmi.product.name: MacBookPro3,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.
  version.compiz: compiz 1:0.9.8.4-0ubuntu2
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.39-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3

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