compiz crashed with SIGSEGV in unity::input::Monitor::Impl::UpdateEventMonitor()

[Nils Erasmus]

1. Attempted to unlock an app from the launcher.
2. Compiz appeared to hang which then forced logout.
3. Apport-gtk popped up shortly after logging back in.

ProblemType: Crash
DistroRelease: Ubuntu 17.04
Package: compiz-core 1:0.9.13.1+17.04.20170109-0ubuntu1
ProcVersionSignature: Ubuntu 4.9.0-16.17-generic 4.9.6
Uname: Linux 4.9.0-16-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
BootLog:

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
CurrentDesktop: Unity
Date: Tue Feb 7 14:48:40 2017
DistUpgraded: Fresh install
DistroCodename: zesty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Kaveri [Radeon R7 Graphics] [1002:130f] (prog-if 00 [VGA controller])
   Subsystem: ASRock Incorporation Kaveri [Radeon R7 Graphics] [1849:130f]
InstallationDate: Installed on 2017-01-31 (7 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Alpha amd64 (20170130)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcCmdline: /usr/bin/compiz
ProcEnviron:
 LANG=en_CA.UTF-8
 LANGUAGE=en_CA:en
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.9.0-16-generic root=UUID=570c91f5-03cf-4754-a496-5de2dbf2342c ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7fd8556fe0fc <_ZN5unity5input7Monitor4Impl18UpdateEventMonitorEv+44>: mov 0x20(%rax),%rbp
 PC (0x7fd8556fe0fc) ok
 source "0x20(%rax)" (0x00000020) not located in a known VMA region (needed readable region)!
 destination "%rbp" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 unity::input::Monitor::Impl::UpdateEventMonitor() () from /usr/lib/x86_64-linux-gnu/compiz/libunityshell.so
 unity::input::Monitor::~Monitor() () from /usr/lib/x86_64-linux-gnu/compiz/libunityshell.so
 unity::UnityScreen::~UnityScreen() () from /usr/lib/x86_64-linux-gnu/compiz/libunityshell.so
 unity::UnityScreen::~UnityScreen() () from /usr/lib/x86_64-linux-gnu/compiz/libunityshell.so
 CompManager::finiPlugin(CompPlugin*) () from /usr/lib/x86_64-linux-gnu/libcompiz_core.so.ABI-20151010
Title: compiz crashed with SIGSEGV in unity::input::Monitor::Impl::UpdateEventMonitor()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 01/14/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P3.40
dmi.board.name: FM2A88X-ITX+
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP3.40:bd01/14/2016:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnFM2A88X-ITX+:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
version.compiz: compiz 1:0.9.13.1+17.04.20170109-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.75-1
version.libgl1-mesa-dri: libgl1-mesa-dri 13.0.4-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 13.0.4-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-1ubuntu9
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.8.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160706-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.13-1
xserver.bootTime: Tue Feb 7 14:54:20 2017
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.18.4-1ubuntu9
xserver.video_driver: radeon

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1629188, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.