ubuntu-x-swat team mailing list archive

[Bryce Harrington <905109@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I was trying to diagnose a bug with workspaces and moving around from
desktop to desktop when the screen suddenly froze (no corruption, just
stopped updating).  Could not vt switch, but could ssh in and file this
bug report from the console.  Looking at dmesg appears to be a drm
fault.

[ 1332.008002] INFO: rcu_sched detected stall on CPU 0 (t=15000 jiffies)
[ 1332.008003] Pid: 2574, comm: Xorg Not tainted 3.2.0-4-generic-pae #10-Ubuntu
[ 1332.008003] Call Trace:
[ 1332.008003]  [<c158f18c>] ? printk+0x2d/0x2f
[ 1332.008003]  [<c10c50e3>] check_cpu_stall.isra.36+0x93/0xe0
[ 1332.008003]  [<c10c515a>] __rcu_pending+0x2a/0x140
[ 1332.008003]  [<c10c550c>] rcu_check_callbacks+0x6c/0x1d0
[ 1332.008003]  [<c1069c0b>] update_process_times+0x3b/0x70
[ 1332.008003]  [<c108b03e>] tick_sched_timer+0x5e/0xc0
[ 1332.008003]  [<c107cf90>] ? __remove_hrtimer+0x40/0xa0
[ 1332.008003]  [<c107d6bf>] __run_hrtimer+0x6f/0x1b0
[ 1332.008003]  [<c108afe0>] ? tick_nohz_handler+0x100/0x100
[ 1332.008003]  [<c107e035>] hrtimer_interrupt+0xe5/0x260
[ 1332.008003]  [<c15ac3a4>] smp_apic_timer_interrupt+0x54/0x88
[ 1332.008003]  [<c15a50e9>] apic_timer_interrupt+0x31/0x38
[ 1332.008003]  [<c15a00e0>] ? get_ranges+0xcb/0x10e
[ 1332.008003]  [<f8a7d0f6>] ? i915_gem_get_aperture_ioctl+0x66/0xb0 [i915]
[ 1332.008003]  [<f8974f28>] drm_ioctl+0x378/0x480 [drm]
[ 1332.008003]  [<f8a7d090>] ? i915_gem_init_ioctl+0x80/0x80 [i915]
[ 1332.008003]  [<c117b278>] ? fsnotify+0x198/0x250
[ 1332.008003]  [<f8974bb0>] ? drm_copy_field+0x80/0x80 [drm]
[ 1332.008003]  [<c1154139>] do_vfs_ioctl+0x79/0x2d0
[ 1332.008003]  [<c1143830>] ? wait_on_retry_sync_kiocb+0x50/0x50
[ 1332.008003]  [<c11543ff>] sys_ioctl+0x6f/0x80
[ 1332.008003]  [<c15abb9f>] sysenter_do_call+0x12/0x28

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-video-intel 2:2.15.901-1ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-4.10-generic-pae 3.2.0-rc5
Uname: Linux 3.2.0-4-generic-pae i686
ApportVersion: 1.90-0ubuntu1
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,imgpng,gnomecompat,regex,place,snap,vpswitch,mousepoll,grid,compiztoolbox,animation,move,session,resize,unitymtgrabhandles,workarounds,wall,expo,fade,ezoom,scale,unityshell]
Date: Thu Dec 15 20:47:24 2011
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Fujitsu Limited. Device [10cf:1458]
   Subsystem: Fujitsu Limited. Device [10cf:1458]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111121)
MachineType: FUJITSU LifeBook T4410
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-4-generic-pae root=UUID=74b73169-6ac4-4698-bb5e-1f9b21250507 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/30/2009
dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
dmi.bios.version: Version 1.05
dmi.board.name: FJNB206
dmi.board.vendor: FUJITSU
dmi.chassis.type: 10
dmi.chassis.vendor: A40R8CE708EA1001
dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.05:bd09/30/2009:svnFUJITSU:pnLifeBookT4410:pvr:rvnFUJITSU:rnFJNB206:rvr:cvnA40R8CE708EA1001:ct10:cvr:
dmi.product.name: LifeBook T4410
dmi.sys.vendor: FUJITSU
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu8
version.libdrm2: libdrm2 2.4.27-1ubuntu1
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

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 kernel-request-3.2.0-5.11 precise running-unity single-occurrence ubuntu

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https://bugs.launchpad.net/bugs/905109

Title:
  Kernel lockup/crash while using desktop switcher in unity

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