Comment 0 for bug 1061510

Hello,

Daniel Angel, in bug 750386, asked us to test this command line:

env MALLOC_CHECK_=3 G_SLICE=always-malloc unity --replace

wich makes Unity/compiz crashed.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: compiz-core 1:0.9.8.4-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-16.25-generic 3.5.4
Uname: Linux 3.5.0-16-generic i686
NonfreeKernelModules: wl
.tmp.unity.support.test.0:

ApportVersion: 2.6.1-0ubuntu1
Architecture: i386
CheckboxSubmission: 089e3c944ec0c0ba294fba3f2fda5dbe
CheckboxSystem: e2a9e28435948e86843155dc45ba128e
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,workarounds,scale,expo,ezoom]
CompositorRunning: compiz
Date: Thu Oct 4 12:12:08 2012
DistUpgraded: 2012-08-27 16:56:34,598 DEBUG enabling apt cron job
DistroCodename: quantal
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI RV630 [Mobility Radeon HD 2600 XT] [1002:9583] (prog-if 00 [VGA controller])
   Subsystem: Apple Inc. Device [106b:0083]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120222)
MachineType: Apple Inc. iMac7,1
ProcCmdline: compiz --replace
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-16-generic root=UUID=147fe03f-9d3d-456c-a928-248ec8a163cf ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0xb6fecfc7 <g_type_check_instance_is_a+87>: testb $0x4,0xe(%ecx)
 PC (0xb6fecfc7) ok
 source "$0x4" ok
 destination "0xe(%ecx)" (0x03a7fe26) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 g_type_check_instance_is_a () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 g_object_unref () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
 g_object_unref () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
Title: compiz crashed with SIGSEGV in g_type_check_instance_is_a()
UpgradeStatus: Upgraded to quantal on 2012-08-27 (37 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
XsessionErrors:
 gnome-session[3419]: WARNING: Application 'compiz.desktop' killed by signal 9
 gnome-session[3419]: WARNING: App 'compiz.desktop' respawning too quickly
 gnome-session[3419]: CRITICAL: We failed, but the fail whale is dead. Sorry....
 gnome-session[3419]: WARNING: App 'compiz.desktop' respawning too quickly
dmi.bios.date: 03/05/08
dmi.bios.vendor: Apple Inc.
dmi.bios.version: IM71.88Z.007A.B03.0803051705
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Mac-F4238CC8
dmi.board.vendor: Apple Inc.
dmi.board.version: PVT
dmi.chassis.asset.tag: Asset Tag#
dmi.chassis.type: 13
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F4238CC8
dmi.modalias: dmi:bvnAppleInc.:bvrIM71.88Z.007A.B03.0803051705:bd03/05/08:svnAppleInc.:pniMac7,1:pvr1.0:rvnAppleInc.:rnMac-F4238CC8:rvrPVT:cvnAppleInc.:ct13:cvrMac-F4238CC8:
dmi.product.name: iMac7,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.8.4-0ubuntu1
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120917.7cfd42ce-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120917.7cfd42ce-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu5
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
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 1:1.0.2-0ubuntu2