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[Bug 1021069] Re: [Dell Inspiron Mini 1012] BUG: unable to handle kernel NULL pointer dereference at 00000020; EIP is at sysfs_do_create_link+0x23/0x1d0

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: David Gerard <dgerard@xxxxxxxxx>
Date: Tue, 13 Aug 2013 09:56:17 -0000
Reply-to: Bug 1021069 <1021069@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Chris - as I noted in the comment right before yours, the box has been
reimaged to 10.04 and is in use with 10.04. As such, I'm not going to
reimage a working machine that's in use to 12.04 for an irrelevant
exercise in jumping through hoops.

The problem is clearly something introduced by Canonical into the 12.04
kernel; it doesn't affect the matching mainline kernel, the matching
Debian kernel, 12.10 or 10.04. At this point, Canonical can either deal
with a problem they clearly introduced, or they can ignore it like they
ignore so many other kernel bugs they clearly introduced. Feel free to
close the bug, nobody at Canonical cares in any case.

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https://bugs.launchpad.net/bugs/1021069

Title:
  [Dell Inspiron Mini 1012] BUG: unable to handle kernel NULL pointer
  dereference at 00000020; EIP is at sysfs_do_create_link+0x23/0x1d0

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Dell Inspiron 1012, Kubuntu 12.04, Wacom Graphire Wireless CTE-630-BT.

  Connecting the tablet via Bluetooth reliably oopses the system,
  crashing X.

  From /var/log/kern.log:

  Jul  4 21:58:44 fenris kernel: [14546.998060] input: WACOM Pen Tablet as /devices/pci0000:00/0000:00:1d.2/usb4/4-2/4-2.3/4-2.3:1.0/bluetooth/hci0/hci0:12/input11
  Jul  4 21:58:44 fenris kernel: [14547.001886] wacom 0005:056A:0081.0003: input,hidraw1: BLUETOOTH HID v1.00 Mouse [WACOM Pen Tablet] on 50:63:13:89:F7:23
  Jul  4 21:58:45 fenris kernel: [14548.450160] BUG: unable to handle kernel NULL pointer dereference at 00000020
  Jul  4 21:58:45 fenris kernel: [14548.450357] IP: [<c11a7de3>] sysfs_do_create_link+0x23/0x1d0
  Jul  4 21:58:45 fenris kernel: [14548.450517] *pdpt = 000000003245e001 *pde = 0000000000000000 
  Jul  4 21:58:45 fenris kernel: [14548.450673] Oops: 0000 [#1] SMP 
  Jul  4 21:58:45 fenris kernel: [14548.450766] Modules linked in: hid_wacom(+) nls_iso8859_1 nls_cp437 vfat fat hidp rfcomm parport_pc snd_hda_codec_realtek ppdev bnep snd_hda_intel snd_hda_codec btusb snd_hwdep snd_pcm bluetooth snd_seq_midi snd_rawmidi joydev snd_seq_midi_event binfmt_misc dell_laptop compal_laptop snd_seq dcdbas lib80211_crypt_tkip snd_timer wl(P) snd_seq_device mac_hid snd uvcvideo psmouse videodev lib80211 serio_raw soundcore snd_page_alloc lp parport usbhid hid ums_realtek usb_storage uas i915 drm_kms_helper drm r8169 i2c_algo_bit video
  Jul  4 21:58:45 fenris kernel: [14548.452016] 
  Jul  4 21:58:45 fenris kernel: [14548.452016] Pid: 6634, comm: modprobe Tainted: P           O 3.2.0-26-generic-pae #41-Ubuntu Dell Inc. Inspiron 1012/0D3J9P
  Jul  4 21:58:45 fenris kernel: [14548.452016] EIP: 0060:[<c11a7de3>] EFLAGS: 00010202 CPU: 1
  Jul  4 21:58:45 fenris kernel: [14548.452016] EIP is at sysfs_do_create_link+0x23/0x1d0
  Jul  4 21:58:45 fenris kernel: [14548.452016] EAX: 00000008 EBX: f20b3000 ECX: c178eefd EDX: f20b3c6c
  Jul  4 21:58:45 fenris kernel: [14548.452016] ESI: c178eefd EDI: 00000000 EBP: f1dfde08 ESP: f1dfddcc
  Jul  4 21:58:45 fenris kernel: [14548.452016]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
  Jul  4 21:58:45 fenris kernel: [14548.452016] Process modprobe (pid: 6634, ti=f1dfc000 task=f16d71a0 task.ti=f1dfc000)
  Jul  4 21:58:45 fenris kernel: [14548.452016] Stack:
  Jul  4 21:58:45 fenris kernel: [14548.452016]  00000000 f16d71a0 c1079ed0 f1dfddd8 f1dfddd8 f20b3000 00000004 f20b3c64
  Jul  4 21:58:45 fenris kernel: [14548.452016]  f1dfde1c f20b3c6c 00000002 00000000 f20b3000 f1447200 00000000 f1dfde14
  Jul  4 21:58:45 fenris kernel: [14548.452016]  c11a7fa7 00000001 f1dfde1c c1451c8b f1dfde4c f87e4582 f1dfde38 c15a54ad
  Jul  4 21:58:45 fenris kernel: [14548.452016] Call Trace:
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c1079ed0>] ? add_wait_queue+0x50/0x50
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c11a7fa7>] sysfs_create_link+0x17/0x20
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c1451c8b>] power_supply_powers+0x1b/0x20
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<f87e4582>] wacom_probe+0x162/0x2b0 [hid_wacom]
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c15a54ad>] ? _raw_spin_lock_irqsave+0x2d/0x40
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<f86038de>] hid_device_probe+0x8e/0x110 [hid]
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c138463d>] really_probe+0x4d/0x150
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c138dcb9>] ? pm_runtime_barrier+0x49/0xb0
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c138487a>] driver_probe_device+0x3a/0x60
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c1384931>] __driver_attach+0x91/0xa0
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c13848a0>] ? driver_probe_device+0x60/0x60
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c13839b9>] bus_for_each_dev+0x49/0x70
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c1384471>] driver_attach+0x21/0x30
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c13848a0>] ? driver_probe_device+0x60/0x60
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c138414f>] bus_add_driver+0x17f/0x260
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<f8602bd0>] ? hid_disconnect+0x60/0x60 [hid]
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c1384e06>] driver_register+0x66/0x110
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<f86046c5>] __hid_register_driver+0x35/0x70 [hid]
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<f87fa019>] wacom_init+0x19/0x1000 [hid_wacom]
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c1003035>] do_one_initcall+0x35/0x170
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<f87fa000>] ? 0xf87f9fff
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c109603d>] sys_init_module+0xad/0x210
  Jul  4 21:58:45 fenris kernel: [14548.452016]  [<c15ac69f>] sysenter_do_call+0x12/0x28
  Jul  4 21:58:45 fenris kernel: [14548.452016] Code: 00 8d bc 27 00 00 00 00 55 89 e5 57 56 53 83 ec 30 3e 8d 74 26 00 85 c9 89 ce 89 55 e8 0f 84 9e 01 00 00 85 c0 0f 84 5d 01 00 00 <8b> 78 18 ba f2 ff ff ff 85 ff 0f 84 a5 00 00 00 b8 a4 75 9f c1 
  Jul  4 21:58:45 fenris kernel: [14548.452016] EIP: [<c11a7de3>] sysfs_do_create_link+0x23/0x1d0 SS:ESP 0068:f1dfddcc
  Jul  4 21:58:45 fenris kernel: [14548.452016] CR2: 0000000000000020
  Jul  4 21:58:45 fenris kernel: [14548.524332] ---[ end trace 939db32f9dd5a7d2 ]---

  This was fine in 10.10, but the user upgraded when 10.10 reached EOL.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-26-generic-pae 3.2.0-26.41
  ProcVersionSignature: Ubuntu 3.2.0-26.41-generic-pae 3.2.19
  Uname: Linux 3.2.0-26-generic-pae i686
  NonfreeKernelModules: wl
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   Home directory /home/arkady not ours.
   **** List of PLAYBACK Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: i386
  ArecordDevices:
   Home directory /home/arkady not ours.
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  arkady     1618 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xf0e00000 irq 46'
     Mixer name	: 'Realtek ALC272'
     Components	: 'HDA:10ec0272,1028041a,00100001'
     Controls      : 15
     Simple ctrls  : 8
  Date: Wed Jul  4 22:11:14 2012
  HibernationDevice: RESUME=UUID=7ca1e985-9107-4c74-b4b6-7dbcec6c4d42
  InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
  MachineType: Dell Inc. Inspiron 1012
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-26-generic-pae root=UUID=1064dab9-8464-4865-9205-deb6d93caca4 ro quiet splash vt.handoff=7
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/arkady not ours.
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-26-generic-pae N/A
   linux-backports-modules-3.2.0-26-generic-pae  N/A
   linux-firmware                                1.79
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/26/2010
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 0D3J9P
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A07
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A07
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd03/26/2010:svnDellInc.:pnInspiron1012:pvrA07:rvnDellInc.:rn0D3J9P:rvrA07:cvnDellInc.:ct8:cvrA07:
  dmi.product.name: Inspiron 1012
  dmi.product.version: A07
  dmi.sys.vendor: Dell Inc.

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