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[LAva <1414349@xxxxxxxxxxxxxxxxxx>]

I tested the upstream kernel on my current Ubuntu 14.04 installation, but still get the same issues.
linux-image-3.19.0-031900rc6

The following packages were used:
linux-image-3.19.0-031900rc6-generic_3.19.0-031900rc6.201501261152_amd64.deb
linux-headers-3.19.0-031900rc6_3.19.0-031900rc6.201501261152_all.deb
linux-headers-3.19.0-031900rc6-generic_3.19.0-031900rc6.201501261152_amd64.deb

from this location: http://kernel.ubuntu.com/~kernel-
ppa/mainline/v3.19-rc6-vivid/

I also installed a new linux-firmware package, because otherwise the
kernel installation would log some warnings about missing firmeware
files for the radeon module.

I used the package from 14.10: http://packages.ubuntu.com/utopic/linux-firmware
linux-firmware_1.138_all.deb


This is the first stack trace I get:

[   20.620150] WARNING: CPU: 2 PID: 154 at /home/kernel/COD/linux/drivers/gpu/drm/radeon/radeon_gart.c:234 radeon_gart_unbind+0xda/0xf0 [radeon]()
[   20.620151] trying to unbind memory from uninitialized GART !
[   20.620152] Modules linked in: ctr ccm arc4 brcmsmac rfcomm bnep cordic bluetooth brcmutil b43 mac80211 intel_powerclamp coretemp kvm_intel cfg80211 ssb kvm snd_seq_midi binfmt_misc uvcvideo snd_hda_codec_realtek snd_seq_midi_event snd_hda_codec_generic crct10dif_pclmul snd_hda_codec_hdmi snd_rawmidi videobuf2_vmalloc videobuf2_memops crc32_pclmul videobuf2_core ghash_clmulni_intel v4l2_common videodev acer_wmi sparse_keymap snd_hda_intel snd_hda_controller aesni_intel snd_hda_codec snd_hwdep media aes_x86_64 lrw snd_pcm gf128mul glue_helper joydev ablk_helper cryptd snd_seq snd_seq_device snd_timer serio_raw intel_ips snd mei_me bcma soundcore parport_pc mei lpc_ich ppdev mac_hid lp parport amdkfd amd_iommu_v2 radeon i915 psmouse ttm i2c_algo_bit ahci drm_kms_helper libahci drm atl1c wmi video
[   20.620185] CPU: 2 PID: 154 Comm: kworker/u16:5 Not tainted 3.19.0-031900rc6-generic #201501261152
[   20.620186] Hardware name: Acer /JM41_CP, BIOS V1.25 03/16/2011
[   20.620193] Workqueue: kacpi_hotplug acpi_hotplug_work_fn
[   20.620194]  00000000000000ea ffff8801312af6f8 ffffffff817c4584 0000000000000007
[   20.620196]  ffff8801312af748 ffff8801312af738 ffffffff81076df7 ffffffff8141e130
[   20.620198]  ffff880036098000 ffff8801312af948 ffff880036098728 ffff8800ad234f00
[   20.620200] Call Trace:
[   20.620206]  [<ffffffff817c4584>] dump_stack+0x45/0x57
[   20.620211]  [<ffffffff81076df7>] warn_slowpath_common+0x97/0xe0
[   20.620215]  [<ffffffff8141e130>] ? update_attr.isra.2+0xa0/0xa0
[   20.620217]  [<ffffffff81076ef6>] warn_slowpath_fmt+0x46/0x50
[   20.620225]  [<ffffffff814aa454>] ? vt_console_print+0x2d4/0x3b0
[   20.620235]  [<ffffffffc065053a>] radeon_gart_unbind+0xda/0xf0 [radeon]
[   20.620245]  [<ffffffffc064cbf2>] radeon_ttm_backend_unbind+0x22/0x40 [radeon]
[   20.620250]  [<ffffffffc0495177>] ttm_tt_unbind+0x27/0x40 [ttm]
[   20.620255]  [<ffffffffc0499b68>] ttm_bo_move_ttm+0xf8/0x130 [ttm]
[   20.620259]  [<ffffffffc0497326>] ttm_bo_handle_move_mem+0x636/0x6f0 [ttm]
[   20.620262]  [<ffffffff810cc888>] ? console_unlock+0x18/0x30
[   20.620263]  [<ffffffff810cd1ae>] ? vprintk_emit+0x25e/0x510
[   20.620266]  [<ffffffff810ddb5c>] ? internal_add_timer+0x6c/0x90
[   20.620270]  [<ffffffffc0497522>] ttm_bo_evict+0x142/0x200 [ttm]
[   20.620274]  [<ffffffffc049776b>] ttm_mem_evict_first+0x18b/0x1f0 [ttm]
[   20.620279]  [<ffffffffc049d4b3>] ? ttm_bo_man_takedown+0x53/0x80 [ttm]
[   20.620283]  [<ffffffffc0497841>] ttm_bo_force_list_clean+0x71/0xc0 [ttm]
[   20.620287]  [<ffffffffc0497937>] ttm_bo_clean_mm+0x47/0x90 [ttm]
[   20.620297]  [<ffffffffc064e6b5>] radeon_ttm_fini+0xf5/0x1c0 [radeon]
[   20.620307]  [<ffffffffc064f436>] radeon_bo_fini+0x16/0x30 [radeon]
[   20.620323]  [<ffffffffc06abd8f>] evergreen_fini+0xaf/0xe0 [radeon]
[   20.620331]  [<ffffffffc063244f>] radeon_device_fini+0x3f/0x140 [radeon]
[   20.620339]  [<ffffffffc0634929>] radeon_driver_unload_kms+0x59/0x80 [radeon]
[   20.620351]  [<ffffffffc03d752d>] drm_dev_unregister+0x2d/0xc0 [drm]
[   20.620358]  [<ffffffffc03d7b07>] drm_put_dev+0x27/0x70 [drm]
[   20.620365]  [<ffffffffc0630215>] radeon_pci_remove+0x15/0x20 [radeon]
[   20.620368]  [<ffffffff813f0cb6>] pci_device_remove+0x46/0xc0
[   20.620371]  [<ffffffff814f687f>] __device_release_driver+0x7f/0xf0
[   20.620373]  [<ffffffff814f691c>] device_release_driver+0x2c/0x40
[   20.620376]  [<ffffffff813eaa9c>] pci_stop_bus_device+0x9c/0xb0
[   20.620377]  [<ffffffff813eaa43>] pci_stop_bus_device+0x43/0xb0
[   20.620379]  [<ffffffff813eac56>] pci_stop_and_remove_bus_device+0x16/0x30
[   20.620382]  [<ffffffff8140a097>] disable_slot+0x57/0xa0
[   20.620384]  [<ffffffff8140a868>] acpiphp_check_bridge.part.11+0xe8/0x100
[   20.620386]  [<ffffffff8140b298>] acpiphp_check_host_bridge+0x88/0xb0
[   20.620389]  [<ffffffff8143c3ba>] acpi_pci_root_scan_dependent+0xe/0x12
[   20.620392]  [<ffffffff81438fcb>] acpi_scan_bus_check+0x48/0xad
[   20.620393]  [<ffffffff81439103>] acpi_generic_hotplug_event+0x2e/0x87
[   20.620395]  [<ffffffff814391b1>] acpi_device_hotplug+0x55/0xcd
[   20.620397]  [<ffffffff814326de>] acpi_hotplug_work_fn+0x20/0x2d
[   20.620401]  [<ffffffff8108f6dd>] process_one_work+0x14d/0x460
[   20.620403]  [<ffffffff810900bb>] worker_thread+0x11b/0x3f0
[   20.620405]  [<ffffffff8108ffa0>] ? create_worker+0x1e0/0x1e0
[   20.620408]  [<ffffffff81095cc9>] kthread+0xc9/0xe0
[   20.620409]  [<ffffffff81095c00>] ? flush_kthread_worker+0x90/0x90
[   20.620412]  [<ffffffff817d17fc>] ret_from_fork+0x7c/0xb0
[   20.620414]  [<ffffffff81095c00>] ? flush_kthread_worker+0x90/0x90
[   20.620415] ---[ end trace 47f988208d7a516b ]---

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1414349

Title:
  Kernel Oops - unable to handle kernel NULL pointer dereference at
  00000004; EIP is at drm_mm_remove_node+0x51/0xf0 [drm]

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  My laptop has a kernel problem with the Ubuntu 14.10 live disk.

  The Kernel reports constantly about a NULL pointer reference.

  Sometimes the X-server and the Unity desktop is started, but the UI freezes constantly for a few seconds. 
  It often ends with a complete freeze of the computer.

  Other times the computer freezes before the desktop was loaded.

  This bug report was created with the information of the Ubuntu 14.10
  32bit live disk, but I also encountered the same problem with the
  Ubuntu 14.10 64bit live disk.

  I think it could be the radeon driver for my ATI Mobility Radeon HD
  5650.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-23-generic 3.16.0-23.31
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  Uname: Linux 3.16.0-23-generic i686
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     4055 F.... pulseaudio
  CasperVersion: 1.345
  Date: Sat Jan 24 19:28:36 2015
  LiveMediaBuild: Ubuntu 14.10 "Utopic Unicorn" - Release i386 (20141022.1)
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash -- BOOT_IMAGE=/casper/vmlinuz
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-23-generic N/A
   linux-backports-modules-3.16.0-23-generic  N/A
   linux-firmware                             1.138
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/16/2011
  dmi.bios.vendor: INSYDE
  dmi.bios.version: V1.25
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: JM41_CP
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnINSYDE:bvrV1.25:bd03/16/2011:svnAcer:pn:pvrV1.25:rvnAcer:rnJM41_CP:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.version: V1.25
  dmi.sys.vendor: Acer

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