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[Roman <917668@xxxxxxxxxxxxxxxxxx>]

The freezes still occure from time to time on my computer, although my kernel is of 3.5 series.
The reports in kern.log are similar to the one in my post #33 above, though they often are
truncated at some early position after the words "Modules linked in...".
The system hangs without any response and need to be rebooted.
My system is KUbuntu 12.10 with all current updates.
MB Asus M5A990FX Pro R2.0, CPU AMD FX 8150, GPU GeForce 210

I've stress-tested the system with prime95 several times, and it looked stable.
Besides, it is not important whether the CPU is on load or idle: the freezes may occur in any case.
So I believe it is not a hardware failure/instability.

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https://bugs.launchpad.net/bugs/917668

Title:
  system freeze ("hard LOCKUP"), warn_slowpath_common+0x7f in
  sock_aio_read

Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  I've had sporadic freezes on this system before since upgrading to
  Precise, but I haven't had the resources to try and ssh in prior to
  this, so I can't tell if this has occurred before. Now that I have an
  additional laptop I can hopefully catch this again if it occurs.

  I screwed up with the logs first, but then managed to salvage dmesg
  with a Trace from terminal buffer. I'll attach it separately below.

  I wasn't active on the desktop when the freeze happened (had my hands
  on the laptop). At least Chromium, Transmission and Google Music were
  running at the time.

  (I'm not familiar with Traces so I'll just pick something from the
  first line as title. Feel free to change it if needed.)

  [19199.961223] ------------[ cut here ]------------
  [19199.961223] WARNING: at /build/buildd/linux-3.2.0/kernel/watchdog.c:241 watchdog_overflow_callback+0x9a/0xc0()
  [19199.961223] Hardware name: System Product Name
  [19199.961223] Watchdog detected hard LOCKUP on cpu 0
  [19199.961223] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat sit tunnel4 bnep rfcomm binfmt_misc dm_crypt snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi usbhid snd_rawmidi snd_seq_midi_event btusb bluetooth hid snd_seq snd_timer snd_seq_device snd sp5100_tco soundcore snd_page_alloc i2c_piix4 edac_core shpchp dm_multipath ppdev asus_atk0110 edac_mce_amd k10temp mac_hid parport_pc lp parport usb_storage uas dm_raid45 xor dm_mirror dm_region_hash dm_log radeon ttm drm_kms_helper drm r8169 wmi i2c_algo_bit pata_atiixp
  [19199.961223] Pid: 1387, comm: Xorg Not tainted 3.2.0-9-generic #16-Ubuntu
  [19199.961223] Call Trace:
  [19199.961223]  <NMI>  [<ffffffff810651df>] warn_slowpath_common+0x7f/0xc0
  [19199.961223]  [<ffffffff810652d6>] warn_slowpath_fmt+0x46/0x50
  [19199.961223]  [<ffffffff8101adf9>] ? sched_clock+0x9/0x10
  [19199.961223]  [<ffffffff810d5fba>] watchdog_overflow_callback+0x9a/0xc0
  [19199.961223]  [<ffffffff81110736>] __perf_event_overflow+0x96/0x1e0
  [19199.961223]  [<ffffffff8110dcc1>] ? perf_event_update_userpage+0x11/0xc0
  [19199.961223]  [<ffffffff81110c84>] perf_event_overflow+0x14/0x20
  [19199.961223]  [<ffffffff81023fc7>] x86_pmu_handle_irq+0xd7/0x120
  [19199.961223]  [<ffffffff816559c1>] perf_event_nmi_handler+0x21/0x30
  [19199.961223]  [<ffffffff81655289>] default_do_nmi+0x69/0x220
  [19199.961223]  [<ffffffff816554c0>] do_nmi+0x80/0x90
  [19199.961223]  [<ffffffff816548b0>] nmi+0x20/0x30
  [19199.961223]  [<ffffffff8103ba95>] ? __ticket_spin_lock+0x25/0x30
  [19199.961223]  <<EOE>>  [<ffffffff8103bb29>] default_spin_lock_flags+0x9/0x10
  [19199.961223]  [<ffffffff816540fe>] _raw_spin_lock_irqsave+0x2e/0x40
  [19199.961223]  [<ffffffff81088cc0>] remove_wait_queue+0x20/0x70
  [19199.961223]  [<ffffffff811890d8>] poll_freewait+0x98/0xe0
  [19199.961223]  [<ffffffff81189c17>] do_select+0x557/0x600
  [19199.961223]  [<ffffffff8105d99e>] ? try_to_wake_up+0x18e/0x200
  [19199.961223]  [<ffffffff81189120>] ? poll_freewait+0xe0/0xe0
  [19199.961223]  [<ffffffff81189210>] ? __pollwait+0xf0/0xf0
  [19199.961223]  [<ffffffff81189210>] ? __pollwait+0xf0/0xf0
  [19199.961223]  [<ffffffff81189210>] ? __pollwait+0xf0/0xf0
  [19199.961223]  [<ffffffff81189210>] ? __pollwait+0xf0/0xf0
  [19199.961223]  [<ffffffff81189210>] ? __pollwait+0xf0/0xf0
  [19199.961223]  [<ffffffff81189210>] ? __pollwait+0xf0/0xf0
  [19199.961223]  [<ffffffff81189210>] ? __pollwait+0xf0/0xf0
  [19199.961223]  [<ffffffff81189210>] ? __pollwait+0xf0/0xf0
  [19199.961223]  [<ffffffff81189210>] ? __pollwait+0xf0/0xf0
  [19199.961223]  [<ffffffff81189eac>] core_sys_select+0x1ec/0x370
  [19199.961223]  [<ffffffff815241ad>] ? sock_aio_read+0x2d/0x40
  [19199.961223]  [<ffffffff81175c02>] ? do_sync_read+0xd2/0x110
  [19199.961223]  [<ffffffff8130fc24>] ? timerqueue_del+0x34/0x90
  [19199.961223]  [<ffffffff8108c6a0>] ? __remove_hrtimer+0x60/0xc0
  [19199.961223]  [<ffffffff8108cc80>] ? hrtimer_try_to_cancel+0x50/0xc0
  [19199.961223]  [<ffffffff8101a6f9>] ? read_tsc+0x9/0x20
  [19199.961223]  [<ffffffff81092f3d>] ? ktime_get_ts+0xad/0xe0
  [19199.961223]  [<ffffffff8118a280>] sys_select+0xc0/0x100
  [19199.961223]  [<ffffffff8165c3c2>] system_call_fastpath+0x16/0x1b
  [19199.961223] ---[ end trace 104ea42b28f227b7 ]---

  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: xserver-xorg-video-radeon 1:6.14.99~git20110811.g93fc084-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-9.16-generic 3.2.1
  Uname: Linux 3.2.0-9-generic x86_64
  .tmp.unity.support.test.0:

  ApportVersion: 1.90-0ubuntu2
  Architecture: amd64
  CheckboxSubmission: 09ae689090491ca53449589269e4bfd8
  CheckboxSystem: edda5d4f616ca792bf437989cb597002
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,resize,compiztoolbox,place,gnomecompat,regex,grid,mousepoll,snap,move,wall,imgpng,vpswitch,session,unitymtgrabhandles,animation,fade,workarounds,expo,scale,ezoom,unityshell]
  CompositorRunning: None
  Date: Tue Jan 17 16:09:07 2012
  DistUpgraded: Log time: 2011-11-20 23:52:49.660633
  DistroCodename: precise
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
  GraphicsCard:
   ATI Technologies Inc RS780 [Radeon HD 3200] [1002:9610] (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. Device [1043:82f1]
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
  MachineType: System manufacturer System Product Name
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-9-generic root=UUID=bf0f4d7e-d08c-4aad-8143-b6e3b16049d6 ro quiet splash radeon.audio=1 vt.handoff=7
  SourcePackage: xserver-xorg-video-ati
  UpgradeStatus: Upgraded to precise on 2012-01-17 (0 days ago)
  dmi.bios.date: 08/12/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 2101
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: M4A78-EM
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2101:bd08/12/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A78-EM:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu8
  version.ia32-libs: ia32-libs 20090808ubuntu33
  version.libdrm2: libdrm2 2.4.30-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu4
  version.xserver-xorg-core: xserver-xorg-core 2:1.10.4-1ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1

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