compiz crashed with SIGSEGV in brw_upload_state()

This crash occurs when the GPU has locked up. Since there's no way to gracefully handle 3D when the 3D hardware has crashed, this is marked as Won't Fix in mesa. If you're seeing this crash you should be able to post the information requested in comments #44 & #46 to a new bug.

Original report follows:
I don't know what this crash triggered. I had a bunch of kernel, intel driver, and other crashes.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: libnux-0.9-0 0.9.32-0ubuntu1
Uname: Linux 2.6.38-997-generic x86_64
Architecture: amd64
Date: Fri Mar 11 11:18:54 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100921.1)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f386e6776d1: mov %rdi,(%rsi)
 PC (0x7f386e6776d1) ok
 source "%rdi" ok
 destination "(%rsi)" (0x00000000) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 ?? () from /usr/lib/dri/i965_dri.so
 brw_upload_state () from /usr/lib/dri/i965_dri.so
 brw_draw_prims () from /usr/lib/dri/i965_dri.so
 ?? () from /usr/lib/dri/libdricore.so
 _mesa_meta_Clear () from /usr/lib/dri/libdricore.so
Title: compiz crashed with SIGSEGV in brw_upload_state()
UpgradeStatus: Upgraded to natty on 2011-03-11 (0 days ago)
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare
XsessionErrors:
 (Do:2179): Wnck-CRITICAL **: wnck_set_client_type got called multiple times.
 (<unknown>:2145): libindicator-WARNING **: Shortcut Group does not have key 'TargetEnvironment' falling back to deprecated use of 'OnlyShowIn' and 'NotShowIn'.
 (<unknown>:2145): libindicator-WARNING **: Shortcut Group does not have key 'TargetEnvironment' falling back to deprecated use of 'OnlyShowIn' and 'NotShowIn'.
---
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.DP.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.HDMI.A.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1920x1200 1600x1200 1280x1024 1280x1024 1280x960 1152x864 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 640x480 640x480 640x480 640x480 720x400
 edid-base64: AP///////wBMLbYCNDJVSCQSAQOANCCgKlrRp1ZLmyQTUFS/74CpQIGAgUBxTwEBAQEBAQEBKDyAoHCwI0AwIDYABkQhAAAaAAAA/QA4Sx5REQAKICAgICAgAAAA/ABTeW5jTWFzdGVyCiAgAAAA/wBIOVhROTAxMjY0CiAgAJw=
DRM.card0.HDMI.A.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DistUpgraded: Log time: 2011-03-11 00:20:27.564047
DistroCodename: natty
DistroRelease: Ubuntu 11.04
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:844d]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100921.1)
InstallationMedia_: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100921.1)
InstallationMedia__: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100921.1)
InstallationMedia___: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100921.1)
InstallationMedia____: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100921.1)
InstallationMedia_____: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100921.1)
MachineType: System manufacturer System Product Name
Package: unity 3.6.6-0ubuntu1
PackageArchitecture: amd64
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=782d30b2-7975-4d00-bf3e-de316d2b96f6 ro quiet splash vt.handoff=7
ProcKernelCmdLine_: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=782d30b2-7975-4d00-bf3e-de316d2b96f6 ro quiet splash vt.handoff=7
ProcKernelCmdLine__: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=782d30b2-7975-4d00-bf3e-de316d2b96f6 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 2.6.38-7.35lp717114v201103180831-generic 2.6.38
ProcVersionSignature_: Ubuntu 2.6.38-7.35lp717114v201103180831-generic 2.6.38
ProcVersionSignature__: Ubuntu 2.6.38-7.35lp717114v201103180831-generic 2.6.38
ProcVersionSignature___: Ubuntu 2.6.38-7.35lp717114v201103180831-generic 2.6.38
ProcVersionSignature____: Ubuntu 2.6.38-7.35lp717114v201103180831-generic 2.6.38
ProcVersionSignature_____: Ubuntu 2.6.38-7.35lp717114v201103180831-generic 2.6.38
Renderer: Unknown
Tags: natty ubuntu compiz-0.9 natty natty ubuntu compiz-0.9 natty natty natty ubuntu compiz-0.9
Uname: Linux 2.6.38-7-generic x86_64
UpgradeStatus: Upgraded to natty on 2011-03-11 (8 days ago)
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare
dmi.bios.date: 02/11/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0806
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8H67-M PRO
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0806:bd02/11/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8H67-MPRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.4-0ubuntu7
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu11
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6