compiz crashed with SIGSEGV in _int_malloc() from cairo_fill() from unity::dash::Style::FocusOverlay()

[Jono Bacon]

Crash while using Unity.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: compiz-core 1:0.9.8+bzr3249-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-6.6-generic 3.5.0
Uname: Linux 3.5.0-6-generic i686
ApportVersion: 2.4-0ubuntu6
Architecture: i386
Date: Mon Jul 30 20:00:13 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xb7452681: mov 0x4(%ecx),%esi
 PC (0xb7452681) ok
 source "0x4(%ecx)" (0x01aa00cb) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 ?? () from /lib/i386-linux-gnu/libc.so.6
 malloc () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2
 ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2
 ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2
Title: compiz crashed with SIGSEGV in malloc()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Daniel van Vugt (vanvugt)]

Unfortunately, crashing in malloc means the heap was corrupted... by some region of code not shown in the stack trace.

[Apport retracing service (apport)]

StacktraceSource:
 #0 _int_malloc (av=0xb757e440, bytes=3224) at malloc.c:3687
   [Error: malloc.c was not found in source tree]
 #1 0xb7454d3c in __GI___libc_malloc (bytes=3224) at malloc.c:2924
   [Error: malloc.c was not found in source tree]
 #2 0xb4ecffbc in ?? ()
StacktraceTop:
 _int_malloc (av=0xb757e440, bytes=3224) at malloc.c:3687
 __GI___libc_malloc (bytes=3224) at malloc.c:2924
 ?? ()

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.