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[Bug 753054] [NEW] compiz crashed with SIGSEGV in free()


Public bug reported:

Binary package hint: compiz

As this is a crash in free() I've got no idea whether it is the same as
one of the other crashes sorry.

Whilst trying to report bug 753047, I was alt-tabbing back and forth
between Evolution and Google Chrome. Each time I tabbed away from
Evolution everything but the mouse pointer froze for several seconds,
followed by all my windows and desktop disappearing then reappearing
with a message that compiz had crashed. Reports attached.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.4+bzr20110406-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.41-generic
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
Date: Thu Apr  7 00:10:30 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus: fglrx, 8.840, 2.6.38-8-generic, x86_64: installed
ExecutablePath: /usr/bin/compiz
 ATI Technologies Inc M92 [Mobility Radeon HD 4500 Series] [1002:9553] (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:3060]
JockeyStatus: xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
ProcCmdline: compiz
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=bae4be2a-2ad1-41dc-adc3-17cb79e591e3 ro splash vga=786 quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-8.41-generic
Renderer: Unknown
 Segfault happened at: 0x7fcfe8b2f8c3 <free+83>:	lock cmpxchg %esi,(%rbx)
 PC (0x7fcfe8b2f8c3) ok
 source "%esi" ok
 destination "(%rbx)" (0x7fcf9000001f) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: compiz
 free () from /lib/x86_64-linux-gnu/libc.so.6
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_variant_unref () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_hash_table_unref () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: compiz crashed with SIGSEGV in free()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 08/18/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.17
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 3060
dmi.board.vendor: Quanta
dmi.board.version: 19.17
dmi.chassis.type: 10
dmi.chassis.vendor: Quanta
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.17:bd08/18/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvrRev1:rvnQuanta:rn3060:rvr19.17:cvnQuanta:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv6 Notebook PC
dmi.product.version: Rev 1
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.4+bzr20110406-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs 20090808ubuntu11
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu6
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: amd64 apport-crash compiz-0.9 natty running-unity ubuntu

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  compiz crashed with SIGSEGV in free()

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