ubuntu-x-swat team mailing list archive

[Bryce Harrington <905591@xxxxxxxxxxxxxxxxxx>]

** Summary changed:

- X/drm Lockup when trying to configure one display centered above another
+ "BUG: unable to handle kernel NULL pointer dereference at 00000018" when trying to configure one display centered above another

** Description changed:

  I was working on diagnosing bug 868354 (Duplicate indicators bar and
  desktops with overlapped screens) by running the gnome-display-
  properties applet on a laptop with external monitor.  I was
  enabling/disabling the displays and moving them around to different
  orientations.
  
  At one point I (roughly) centered the smaller laptop display above the
  external monitor, hit apply, and the system locked up.  dmesg shows:
  
+ [ 1367.073390] BUG: unable to handle kernel NULL pointer dereference at 00000018
+ [ 1367.073467] IP: [<f8a090f3>] i915_gem_get_aperture_ioctl+0x63/0xb0 [i915]
+ [ 1367.073530] *pdpt = 0000000033f6b001 *pde = 0000000000000000 
+ [ 1367.073571] Oops: 0000 [#1] SMP 
+ [ 1367.073602] Modules linked in: joydev parport_pc ppdev rfcomm snd_usb_audio usbhid snd_usbmidi_lib hid tpm_infineon bnep arc4 btusb bluetooth snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi input_polldev pcmcia snd_seq_midi_event uvcvideo iwlwifi videodev snd_seq yenta_socket pcmcia_rsrc mac80211 psmouse pcmcia_core serio_raw snd_timer snd_seq_device cfg80211 snd nfsd tpm_tis nfs soundcore snd_page_alloc lockd fscache auth_rpcgss nfs_acl sunrpc binfmt_misc fujitsu_laptop i915 drm_kms_helper drm i2c_algo_bit video lp parport sdhci_pci sdhci firewire_ohci firewire_core crc_itu_t tg3
+ [ 1367.074156] 
  [ 1367.074172] Pid: 1208, comm: Xorg Not tainted 3.2.0-5-generic-pae #11-Ubuntu FUJITSU LifeBook T4410/FJNB206
  [ 1367.074246] EIP: 0060:[<f8a090f3>] EFLAGS: 00013202 CPU: 1
  [ 1367.074295] EIP is at i915_gem_get_aperture_ioctl+0x63/0xb0 [i915]
  [ 1367.074338] EAX: f74df24c EBX: f74de000 ECX: f74df1dc EDX: 00000000
  [ 1367.074377] ESI: f4794c14 EDI: 05d09000 EBP: f3361e8c ESP: f3361e74
  [ 1367.074417]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
  [ 1367.074451] Process Xorg (pid: 1208, ti=f3360000 task=f301b2c0 task.ti=f3360000)
  [ 1367.074501] Stack:
  [ 1367.074517]  00000000 00000000 f3361edc f6d61c80 f4794c00 80106463 f3361f6c f8944f28
  [ 1367.074596]  00000001 f895e5ed f8959bb6 f895fc98 000004b8 80106463 00000063 0000e200
  [ 1367.074684]  00000001 00000000 00000063 bfc22340 f8a09090 00000010 f8a4c450 ffffffea
  [ 1367.074766] Call Trace:
  [ 1367.076006]  [<f8944f28>] drm_ioctl+0x378/0x480 [drm]
  [ 1367.076006]  [<f8a09090>] ? i915_gem_init_ioctl+0x80/0x80 [i915]
  [ 1367.076006]  [<c117bbc8>] ? fsnotify+0x198/0x250
  [ 1367.076006]  [<f8944bb0>] ? drm_copy_field+0x80/0x80 [drm]
  [ 1367.076006]  [<c1154a89>] do_vfs_ioctl+0x79/0x2d0
  [ 1367.076006]  [<c1144180>] ? wait_on_retry_sync_kiocb+0x50/0x50
  [ 1367.076006]  [<c1154d4f>] sys_ioctl+0x6f/0x80
  [ 1367.076006]  [<c15ac59f>] sysenter_do_call+0x12/0x28
  [ 1367.076006] Code: 93 4c 12 00 00 8d 83 4c 12 00 00 c7 45 e8 00 00 00 00 c7 45 ec 00 00 00 00 39 d0 8d 4a 98 74 22 31 ff 8d b6 00 00 00 00 8b 51 54 
  [ 1367.076006]  7a 18 8b 51 68 39 d0 8d 4a 98 75 f0 89 7d e8 c7 45 ec 00 00 
  [ 1367.076006] EIP: [<f8a090f3>] i915_gem_get_aperture_ioctl+0x63/0xb0 [i915] SS:ESP 0068:f3361e74
  [ 1367.076006] CR2: 0000000000000018
  
+ 
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: xorg 1:7.6+7ubuntu7
  ProcVersionSignature: Ubuntu 3.2.0-5.11-generic-pae 3.2.0-rc5
  Uname: Linux 3.2.0-5-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: Fri Dec 16 17:31:10 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]
+  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
+  Socket 0:
+    no product info available
  PccardctlStatus:
-  Socket 0:
-    no card
+  Socket 0:
+    no card
  ProcEnviron:
-  PATH=(custom, user)
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  PATH=(custom, user)
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-5-generic-pae root=UUID=74b73169-6ac4-4698-bb5e-1f9b21250507 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  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

** Changed in: xserver-xorg-video-intel (Ubuntu)
       Status: New => Triaged

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/905591

Title:
  "BUG: unable to handle kernel NULL pointer dereference at 00000018"
  when trying to configure one display centered above another

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