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[Bug 1454774] [NEW] r600_dri.so crashes with a Segmentation Fault (SIGSEGV)

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Jason Chagas <1454774@xxxxxxxxxxxxxxxxxx>
Date: Wed, 13 May 2015 16:37:03 -0000
Reply-to: Bug 1454774 <1454774@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

r600_dri.so crashes with a Segmentation Fault (SIGSEGV). I noticed it
usually happens when running the Firefox on the Google Maps website. It
is inconsistent, however, and it may require a few tries before Firefox
quits. Here is how I was able to trace the problem:

1) Run firefox in debub mode:

%  firefox -g       //launch firefox in debug mode
(gdb) handle SIGPIPE nostop    //disable GDB trapping of SIGPIPE messages
(gdb) run 

2) Access http://www.google.com/maps and entering addresses a few times
until it crashes

3) GDB backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x00007fff892a2a2f in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
(gdb) bt
#0  0x00007fff892a2a2f in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#1  0x00007fff8929ea27 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007fff892a57ff in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007ffff1e60446 in ?? () from /usr/lib/firefox/libxul.so
#4  0x00007ffff240f36a in ?? () from /usr/lib/firefox/libxul.so
#5  0x00007ffff242fc31 in ?? () from /usr/lib/firefox/libxul.so
#6  0x00007ffff240f594 in ?? () from /usr/lib/firefox/libxul.so
#7  0x00007ffff23899fc in ?? () from /usr/lib/firefox/libxul.so
#8  0x00007ffff23f20fb in ?? () from /usr/lib/firefox/libxul.so
#9  0x00007ffff3404e58 in ?? () from /usr/lib/firefox/libxul.so
#10 0x00007ffff33ffa57 in ?? () from /usr/lib/firefox/libxul.so
#11 0x00007ffff3404a71 in ?? () from /usr/lib/firefox/libxul.so
#12 0x00007ffff3404cf6 in ?? () from /usr/lib/firefox/libxul.so
#13 0x00007ffff3405881 in ?? () from /usr/lib/firefox/libxul.so
#14 0x00007ffff31b266d in ?? () from /usr/lib/firefox/libxul.so
#15 0x00007ffff7fe75d0 in ?? ()
#16 0x0000000000000602 in ?? ()
#17 0x00007fffffff8470 in ?? ()
#18 0xfff9000000000000 in ?? ()
#19 0x00007ffff54a0a20 in ?? () from /usr/lib/firefox/libxul.so
#20 0x00007fffdea51a30 in ?? ()
#21 0x00007fffbe985a94 in ?? ()
#22 0x0000000000000482 in ?? ()
#23 0x00007fffffff8510 in ?? ()
#24 0x00007fffb666b790 in ?? ()
#25 0x0000000000000001 in ?? ()
#26 0x00007fffffff84b8 in ?? ()
#27 0xfffc7fff73f8bf40 in ?? ()
#28 0xfffc7fff73f7c7e0 in ?? ()
#29 0xfff8800000004500 in ?? ()
#30 0x00007fffffff8550 in ?? ()
#31 0x00007fffb666b790 in ?? ()
#32 0x00007fffb8e18b08 in ?? ()
#33 0x0000000000000681 in ?? ()
#34 0xfff8800000004500 in ?? ()
#35 0xfffc7fff73f7c7e0 in ?? ()
#36 0xfffc7fff73f8bf40 in ?? ()
#37 0xfffc7fffdf539f18 in ?? ()
#38 0xfff9800000000000 in ?? ()
#39 0x00007fffdea00b80 in ?? ()
#40 0x0000000000000068 in ?? ()
#41 0x00007fff73f7c2e0 in ?? ()
#42 0x00007fffb8e14308 in ?? ()
#43 0xfff9800000000000 in ?? ()
#44 0x0000000000000000 in ?? ()
(gdb) 

========

I built mesa_10.1.3 with debug symbols, replaced /usr/lib/x86_64-linux-
gnu/dri/r600_dri.so, ran Firefox again as described above and here is
where it crashed:

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000002 in ?? ()
(gdb) bt
#0  0x0000000000000002 in ?? ()
#1  0x00007fffaf5b7ac4 in pipe_sampler_view_reference (ptr=0x7fffaba98400, 
    view=0x0) at ../../src/gallium/auxiliary/util/u_inlines.h:151
#2  0x00007fffaf5b80e0 in st_get_texture_sampler_view_from_stobj (
    stObj=0x7fffaba98000, pipe=0x7fffb33ed000, samp=0x7fffaba98040, 
    format=PIPE_FORMAT_R8G8B8A8_UNORM) at state_tracker/st_atom_texture.c:209
#3  0x00007fffaf5b82cc in update_single_texture (st=0x7fffb4714000, 
    sampler_view=0x7fffffff69e8, texUnit=3)
    at state_tracker/st_atom_texture.c:272
#4  0x00007fffaf5b8372 in update_textures (st=0x7fffb4714000, shader_stage=1, 
    prog=0x7fffb555c800, max_units=16, sampler_views=0x7fffb4714990, 
    num_textures=0x7fffb4714b14) at state_tracker/st_atom_texture.c:305
#5  0x00007fffaf5b84ec in update_fragment_textures (st=0x7fffb4714000)
    at state_tracker/st_atom_texture.c:355
#6  0x00007fffaf5b1401 in st_validate_state (st=0x7fffb4714000)
    at state_tracker/st_atom.c:201
#7  0x00007fffaf5bddb3 in st_Clear (ctx=0x7fffb4f7c000, mask=304)
    at state_tracker/st_cb_clear.c:443
#8  0x00007fffaf42e1c3 in _mesa_Clear (mask=17664) at main/clear.c:206
#9  0x00007ffff1e60446 in ?? () from /usr/lib/firefox/libxul.so
#10 0x00007ffff240f36a in ?? () from /usr/lib/firefox/libxul.so
#11 0x00007ffff242fc31 in ?? () from /usr/lib/firefox/libxul.so
#12 0x00007ffff240f594 in ?? () from /usr/lib/firefox/libxul.so
#13 0x00007ffff23899fc in ?? () from /usr/lib/firefox/libxul.so
#14 0x00007ffff23f20fb in ?? () from /usr/lib/firefox/libxul.so
#15 0x00007ffff3404e58 in ?? () from /usr/lib/firefox/libxul.so
#16 0x00007ffff33ffa57 in ?? () from /usr/lib/firefox/libxul.so
#17 0x00007ffff3404a71 in ?? () from /usr/lib/firefox/libxul.so
#18 0x00007ffff3404cf6 in ?? () from /usr/lib/firefox/libxul.so
#19 0x00007ffff3405881 in ?? () from /usr/lib/firefox/libxul.so
#20 0x00007ffff31b266d in ?? () from /usr/lib/firefox/libxul.so
#21 0x00007ffff7fe75d0 in ?? ()
#22 0x0000000000000602 in ?? ()
#23 0x00007fffffff8470 in ?? ()
#24 0xfff9000000000000 in ?? ()
#25 0x00007ffff54a0a20 in ?? () from /usr/lib/firefox/libxul.so
#26 0x00007fffdea51a30 in ?? ()
#27 0x00007fffcbe337b4 in ?? ()
#28 0x0000000000000482 in ?? ()
#29 0x00007fffffff8510 in ?? ()
#30 0x00007fffd9b03e90 in ?? ()
#31 0x0000000000000001 in ?? ()
#32 0x00007fffffff84b8 in ?? ()
#33 0xfffc7fff8d0c95c0 in ?? ()
#34 0xfffc7fff8d0baba0 in ?? ()
#35 0xfff8800000004500 in ?? ()
#36 0x00007fffffff8550 in ?? ()
#37 0x00007fffd9b03e90 in ?? ()
#38 0x00007fffc74ee248 in ?? ()
#39 0x0000000000000681 in ?? ()
#40 0xfff8800000004500 in ?? ()
#41 0xfffc7fff8d0baba0 in ?? ()
#42 0xfffc7fff8d0c95c0 in ?? ()
#43 0xfffc7fffdf46a220 in ?? ()
#44 0xfff9800000000000 in ?? ()
#45 0x00007fffdea00b80 in ?? ()
#46 0x0000000000000068 in ?? ()
#47 0x00007fff8d0ba6a0 in ?? ()
#48 0x00007fffc7914ff8 in ?? ()
#49 0xfff9800000000000 in ?? ()
#50 0x0000000000000000 in ?? ()
(gdb) 
(gdb) 
(gdb) 

======================

I replaced /usr/lib/x86_64-linux-gnu/dri/r600_dri.so with a version
built with the latest sources (from git://git.debian.org/git/pkg-
xorg/lib/mesa) and it seems far more stable. I haven't experienced any
crashes since. I looked at the sources and I see numerous changes
between mesa_10.1.3 and the latest. So, it is possible the issue was
fixed in the latest source base. Therefore, Canonical should consider
updating the 'libgl1-mesa-dri' package.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: libgl1-mesa-dri 10.1.3-0ubuntu0.4 [modified: usr/lib/x86_64-linux-gnu/dri/r600_dri.so]
ProcVersionSignature: Ubuntu 3.13.0-52.86-generic 3.13.11-ckt18
Uname: Linux 3.13.0-52-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: Unity
Date: Wed May 13 12:02:51 2015
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 webcamstudio, 0.72, 3.13.0-48-generic, x86_64: installed
 webcamstudio, 0.72, 3.13.0-49-generic, x86_64: installed
 webcamstudio, 0.72, 3.13.0-51-generic, x86_64: installed
 webcamstudio, 0.72, 3.13.0-52-generic, x86_64: installed
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] [1002:68f9] (prog-if 00 [VGA controller])
   Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:010a]
InstallationDate: Installed on 2015-01-17 (116 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: LENOVO 10086
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-52-generic root=UUID=0d56744c-72b1-436b-8f8d-4429be088fa0 ro quiet splash vt.handoff=7
SourcePackage: mesa
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/05/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: EQKT21AUS
dmi.board.vendor: LENOVO
dmi.board.version: Win8 STD MM DPK IPG
dmi.chassis.type: 3
dmi.chassis.vendor: LENOVO
dmi.modalias: dmi:bvnLENOVO:bvrEQKT21AUS:bd12/05/2012:svnLENOVO:pn10086:pvrIdeaCentreK430:rvnLENOVO:rn:rvrWin8STDMMDPKIPG:cvnLENOVO:ct3:cvr:
dmi.product.name: 10086
dmi.product.version: IdeaCentre K430
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.4
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.6
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Wed May 13 10:15:11 2015
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2.7
xserver.video_driver: radeon

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


** Tags: amd64 apport-bug trusty ubuntu

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to mesa in Ubuntu.
https://bugs.launchpad.net/bugs/1454774

Title:
  r600_dri.so crashes with a Segmentation Fault (SIGSEGV)

Status in mesa package in Ubuntu:
  New

Bug description:
  r600_dri.so crashes with a Segmentation Fault (SIGSEGV). I noticed it
  usually happens when running the Firefox on the Google Maps website.
  It is inconsistent, however, and it may require a few tries before
  Firefox quits. Here is how I was able to trace the problem:

  1) Run firefox in debub mode:

  %  firefox -g       //launch firefox in debug mode
  (gdb) handle SIGPIPE nostop    //disable GDB trapping of SIGPIPE messages
  (gdb) run 

  2) Access http://www.google.com/maps and entering addresses a few
  times until it crashes

  3) GDB backtrace:

  Program received signal SIGSEGV, Segmentation fault.
  0x00007fff892a2a2f in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
  (gdb) bt
  #0  0x00007fff892a2a2f in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
  #1  0x00007fff8929ea27 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
  #2  0x00007fff892a57ff in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
  #3  0x00007ffff1e60446 in ?? () from /usr/lib/firefox/libxul.so
  #4  0x00007ffff240f36a in ?? () from /usr/lib/firefox/libxul.so
  #5  0x00007ffff242fc31 in ?? () from /usr/lib/firefox/libxul.so
  #6  0x00007ffff240f594 in ?? () from /usr/lib/firefox/libxul.so
  #7  0x00007ffff23899fc in ?? () from /usr/lib/firefox/libxul.so
  #8  0x00007ffff23f20fb in ?? () from /usr/lib/firefox/libxul.so
  #9  0x00007ffff3404e58 in ?? () from /usr/lib/firefox/libxul.so
  #10 0x00007ffff33ffa57 in ?? () from /usr/lib/firefox/libxul.so
  #11 0x00007ffff3404a71 in ?? () from /usr/lib/firefox/libxul.so
  #12 0x00007ffff3404cf6 in ?? () from /usr/lib/firefox/libxul.so
  #13 0x00007ffff3405881 in ?? () from /usr/lib/firefox/libxul.so
  #14 0x00007ffff31b266d in ?? () from /usr/lib/firefox/libxul.so
  #15 0x00007ffff7fe75d0 in ?? ()
  #16 0x0000000000000602 in ?? ()
  #17 0x00007fffffff8470 in ?? ()
  #18 0xfff9000000000000 in ?? ()
  #19 0x00007ffff54a0a20 in ?? () from /usr/lib/firefox/libxul.so
  #20 0x00007fffdea51a30 in ?? ()
  #21 0x00007fffbe985a94 in ?? ()
  #22 0x0000000000000482 in ?? ()
  #23 0x00007fffffff8510 in ?? ()
  #24 0x00007fffb666b790 in ?? ()
  #25 0x0000000000000001 in ?? ()
  #26 0x00007fffffff84b8 in ?? ()
  #27 0xfffc7fff73f8bf40 in ?? ()
  #28 0xfffc7fff73f7c7e0 in ?? ()
  #29 0xfff8800000004500 in ?? ()
  #30 0x00007fffffff8550 in ?? ()
  #31 0x00007fffb666b790 in ?? ()
  #32 0x00007fffb8e18b08 in ?? ()
  #33 0x0000000000000681 in ?? ()
  #34 0xfff8800000004500 in ?? ()
  #35 0xfffc7fff73f7c7e0 in ?? ()
  #36 0xfffc7fff73f8bf40 in ?? ()
  #37 0xfffc7fffdf539f18 in ?? ()
  #38 0xfff9800000000000 in ?? ()
  #39 0x00007fffdea00b80 in ?? ()
  #40 0x0000000000000068 in ?? ()
  #41 0x00007fff73f7c2e0 in ?? ()
  #42 0x00007fffb8e14308 in ?? ()
  #43 0xfff9800000000000 in ?? ()
  #44 0x0000000000000000 in ?? ()
  (gdb) 

  ========

  I built mesa_10.1.3 with debug symbols, replaced /usr/lib/x86_64
  -linux-gnu/dri/r600_dri.so, ran Firefox again as described above and
  here is where it crashed:

  Program received signal SIGSEGV, Segmentation fault.
  0x0000000000000002 in ?? ()
  (gdb) bt
  #0  0x0000000000000002 in ?? ()
  #1  0x00007fffaf5b7ac4 in pipe_sampler_view_reference (ptr=0x7fffaba98400, 
      view=0x0) at ../../src/gallium/auxiliary/util/u_inlines.h:151
  #2  0x00007fffaf5b80e0 in st_get_texture_sampler_view_from_stobj (
      stObj=0x7fffaba98000, pipe=0x7fffb33ed000, samp=0x7fffaba98040, 
      format=PIPE_FORMAT_R8G8B8A8_UNORM) at state_tracker/st_atom_texture.c:209
  #3  0x00007fffaf5b82cc in update_single_texture (st=0x7fffb4714000, 
      sampler_view=0x7fffffff69e8, texUnit=3)
      at state_tracker/st_atom_texture.c:272
  #4  0x00007fffaf5b8372 in update_textures (st=0x7fffb4714000, shader_stage=1, 
      prog=0x7fffb555c800, max_units=16, sampler_views=0x7fffb4714990, 
      num_textures=0x7fffb4714b14) at state_tracker/st_atom_texture.c:305
  #5  0x00007fffaf5b84ec in update_fragment_textures (st=0x7fffb4714000)
      at state_tracker/st_atom_texture.c:355
  #6  0x00007fffaf5b1401 in st_validate_state (st=0x7fffb4714000)
      at state_tracker/st_atom.c:201
  #7  0x00007fffaf5bddb3 in st_Clear (ctx=0x7fffb4f7c000, mask=304)
      at state_tracker/st_cb_clear.c:443
  #8  0x00007fffaf42e1c3 in _mesa_Clear (mask=17664) at main/clear.c:206
  #9  0x00007ffff1e60446 in ?? () from /usr/lib/firefox/libxul.so
  #10 0x00007ffff240f36a in ?? () from /usr/lib/firefox/libxul.so
  #11 0x00007ffff242fc31 in ?? () from /usr/lib/firefox/libxul.so
  #12 0x00007ffff240f594 in ?? () from /usr/lib/firefox/libxul.so
  #13 0x00007ffff23899fc in ?? () from /usr/lib/firefox/libxul.so
  #14 0x00007ffff23f20fb in ?? () from /usr/lib/firefox/libxul.so
  #15 0x00007ffff3404e58 in ?? () from /usr/lib/firefox/libxul.so
  #16 0x00007ffff33ffa57 in ?? () from /usr/lib/firefox/libxul.so
  #17 0x00007ffff3404a71 in ?? () from /usr/lib/firefox/libxul.so
  #18 0x00007ffff3404cf6 in ?? () from /usr/lib/firefox/libxul.so
  #19 0x00007ffff3405881 in ?? () from /usr/lib/firefox/libxul.so
  #20 0x00007ffff31b266d in ?? () from /usr/lib/firefox/libxul.so
  #21 0x00007ffff7fe75d0 in ?? ()
  #22 0x0000000000000602 in ?? ()
  #23 0x00007fffffff8470 in ?? ()
  #24 0xfff9000000000000 in ?? ()
  #25 0x00007ffff54a0a20 in ?? () from /usr/lib/firefox/libxul.so
  #26 0x00007fffdea51a30 in ?? ()
  #27 0x00007fffcbe337b4 in ?? ()
  #28 0x0000000000000482 in ?? ()
  #29 0x00007fffffff8510 in ?? ()
  #30 0x00007fffd9b03e90 in ?? ()
  #31 0x0000000000000001 in ?? ()
  #32 0x00007fffffff84b8 in ?? ()
  #33 0xfffc7fff8d0c95c0 in ?? ()
  #34 0xfffc7fff8d0baba0 in ?? ()
  #35 0xfff8800000004500 in ?? ()
  #36 0x00007fffffff8550 in ?? ()
  #37 0x00007fffd9b03e90 in ?? ()
  #38 0x00007fffc74ee248 in ?? ()
  #39 0x0000000000000681 in ?? ()
  #40 0xfff8800000004500 in ?? ()
  #41 0xfffc7fff8d0baba0 in ?? ()
  #42 0xfffc7fff8d0c95c0 in ?? ()
  #43 0xfffc7fffdf46a220 in ?? ()
  #44 0xfff9800000000000 in ?? ()
  #45 0x00007fffdea00b80 in ?? ()
  #46 0x0000000000000068 in ?? ()
  #47 0x00007fff8d0ba6a0 in ?? ()
  #48 0x00007fffc7914ff8 in ?? ()
  #49 0xfff9800000000000 in ?? ()
  #50 0x0000000000000000 in ?? ()
  (gdb) 
  (gdb) 
  (gdb) 

  ======================

  I replaced /usr/lib/x86_64-linux-gnu/dri/r600_dri.so with a version
  built with the latest sources (from git://git.debian.org/git/pkg-
  xorg/lib/mesa) and it seems far more stable. I haven't experienced any
  crashes since. I looked at the sources and I see numerous changes
  between mesa_10.1.3 and the latest. So, it is possible the issue was
  fixed in the latest source base. Therefore, Canonical should consider
  updating the 'libgl1-mesa-dri' package.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: libgl1-mesa-dri 10.1.3-0ubuntu0.4 [modified: usr/lib/x86_64-linux-gnu/dri/r600_dri.so]
  ProcVersionSignature: Ubuntu 3.13.0-52.86-generic 3.13.11-ckt18
  Uname: Linux 3.13.0-52-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.10
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: Unity
  Date: Wed May 13 12:02:51 2015
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   webcamstudio, 0.72, 3.13.0-48-generic, x86_64: installed
   webcamstudio, 0.72, 3.13.0-49-generic, x86_64: installed
   webcamstudio, 0.72, 3.13.0-51-generic, x86_64: installed
   webcamstudio, 0.72, 3.13.0-52-generic, x86_64: installed
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] [1002:68f9] (prog-if 00 [VGA controller])
     Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:010a]
  InstallationDate: Installed on 2015-01-17 (116 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: LENOVO 10086
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-52-generic root=UUID=0d56744c-72b1-436b-8f8d-4429be088fa0 ro quiet splash vt.handoff=7
  SourcePackage: mesa
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/05/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: EQKT21AUS
  dmi.board.vendor: LENOVO
  dmi.board.version: Win8 STD MM DPK IPG
  dmi.chassis.type: 3
  dmi.chassis.vendor: LENOVO
  dmi.modalias: dmi:bvnLENOVO:bvrEQKT21AUS:bd12/05/2012:svnLENOVO:pn10086:pvrIdeaCentreK430:rvnLENOVO:rn:rvrWin8STDMMDPKIPG:cvnLENOVO:ct3:cvr:
  dmi.product.name: 10086
  dmi.product.version: IdeaCentre K430
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.4
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.6
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Wed May 13 10:15:11 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.15.1-0ubuntu2.7
  xserver.video_driver: radeon

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Follow ups

[Bug 1454774] [NEW] r600_dri.so crashes with a Segmentation Fault (SIGSEGV)
From: Jason Chagas, 2015-05-13
References

[Bug 1454774] [NEW] r600_dri.so crashes with a Segmentation Fault (SIGSEGV)
From: Jason Chagas, 2015-05-13