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

*** This bug is a duplicate of bug 1283477 ***
    https://bugs.launchpad.net/bugs/1283477

** This bug has been marked a duplicate of bug 1283477
   compiz crashed with SIGSEGV in _int_malloc()

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https://bugs.launchpad.net/bugs/1213742

Title:
  compiz crashed with SIGSEGV in _int_free()

Status in Unity:
  Triaged
Status in unity package in Ubuntu:
  Triaged

Bug description:
  I was searching for an ODT document, and accidentally opened the
  preview for it, but then when I went the close the preview, Unity
  froze, and then after about 5 secs, crashed and restarted.

  ProblemType: Crash
  DistroRelease: Ubuntu 13.10
  Package: unity 7.1.0+13.10.20130816.3-0ubuntu1
  ProcVersionSignature: Ubuntu 3.11.0-2.5-generic 3.11.0-rc5
  Uname: Linux 3.11.0-2-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.12-0ubuntu3
  Architecture: amd64
  Date: Mon Aug 19 08:58:36 2013
  ExecutablePath: /usr/bin/compiz
  InstallationDate: Installed on 2013-02-05 (194 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MarkForUpload: True
  ProcCmdline: compiz
  ProcEnviron:
   LANGUAGE=en_AU:en
   PATH=(custom, user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_AU.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7fd116c07289 <_int_free+217>:	mov    0x8(%rdx),%esi
   PC (0x7fd116c07289) ok
   source "0x8(%rdx)" (0x100000007) not located in a known VMA region (needed readable region)!
   destination "%esi" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   _int_free (av=0x7fd116f47740 <main_arena>, p=0x7d9da60, have_lock=0) at malloc.c:3832
   XDestroyRegion () from /usr/lib/x86_64-linux-gnu/libX11.so.6
   CompRegion::intersects(CompRegion const&) const () from /usr/lib/libcompiz_core.so.ABI-20130125
   unity::UnityScreen::compizDamageNux(CompRegion const&) () from /usr/lib/compiz/libunityshell.so
   unity::UnityScreen::preparePaint(int) () from /usr/lib/compiz/libunityshell.so
  Title: compiz crashed with SIGSEGV in _int_free()
  UpgradeStatus: Upgraded to saucy on 2013-08-13 (5 days ago)
  UserGroups: adm cdrom dip games lpadmin plugdev sambashare sudo vboxusers

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