Xorg crashed with SIGABRT in has_offload_slaves()

[jcwillian]

i do no

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: xserver-xorg-core 2:1.14.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.10.0-4.13-generic 3.10.1
Uname: Linux 3.10.0-4-generic i686
NonfreeKernelModules: wl
.tmp.unity.support.test.0:

ApportVersion: 2.11-0ubuntu1
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Sun Jul 21 20:28:30 2013
DistUpgraded: 2013-05-05 22:54:14,294 DEBUG enabling apt cron job
DistroCodename: saucy
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 6.30.223.30+bdcom, 3.10.0-1-generic, i686: installed
 bcmwl, 6.30.223.30+bdcom, 3.10.0-2-generic, i686: installed
 bcmwl, 6.30.223.30+bdcom, 3.10.0-3-generic, i686: installed
 bcmwl, 6.30.223.30+bdcom, 3.10.0-4-generic, i686: installed
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:3920]
InstallationDate: Installed on 2012-08-02 (353 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MachineType: LENOVO 0677
MarkForUpload: True
ProcCmdline: /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.10.0-4-generic root=UUID=ea621d4c-4114-4a22-b96c-2396a99738ae ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so
 ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so
 ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so
 BlockHandler ()
 WaitForSomething ()
Title: Xorg crashed with SIGABRT in BlockHandler()
UpgradeStatus: Upgraded to saucy on 2013-05-06 (76 days ago)
UserGroups:

dmi.bios.date: 12/08/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 29CN35WW(V2.12)
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: LENOVO
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnLENOVO:bvr29CN35WW(V2.12):bd12/08/2010:svnLENOVO:pn0677:pvrLenovoG460:rvnLENOVO:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: 0677
dmi.product.version: Lenovo G460
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu2
version.libdrm2: libdrm2 2.4.45-2ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.14.2-0ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.9-0ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.8-0ubuntu1.1
xserver.bootTime: Sun Jul 21 20:32:24 2013
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.14.2-0ubuntu1
xserver.video_driver: intel

[Apport retracing service (apport)]

StacktraceTop:
 has_offload_slaves (sna=<optimized out>) at ../../../src/sna/sna_accel.c:14150
 start_flush (scanout=0xb7a93d30, sna=0xb5d7c000) at ../../../src/sna/sna_accel.c:14187
 sna_accel_do_flush (sna=0xb5d7c000) at ../../../src/sna/sna_accel.c:14251
 sna_accel_block_handler (sna=sna@entry=0xb5d7c000, tv=tv@entry=0xbfba1fa4) at ../../../src/sna/sna_accel.c:14789
 sna_block_handler (arg=0xb7a7bd20, timeout=0xbfba1fa4, read_mask=0xb77b9a60 <LastSelectMask>) at ../../../src/sna/sna_driver.c:672