BUG: unable to handle kernel NULL pointer dereference at 00000008

[Iker - eL FRuTeRo]

Binary package hint: kaffeine

It ocurrs when start searching channels.

The device works in other O.S. (Win)

The device is an Asus My Cinema U3000 Hybrid and loads correctly
[ 135.624190] usb 1-5: new high speed USB device using ehci_hcd and address 2
[ 135.757069] usb 1-5: configuration #1 chosen from 1 choice
[ 135.931175] dib0700: loaded with support for 9 different device-types
[ 135.931581] dvb-usb: found a 'Asus My Cinema-U3000Hybrid' in cold state, will try to load a firmware
[ 135.931593] usb 1-5: firmware: requesting dvb-usb-dib0700-1.20.fw
[ 135.953288] dvb-usb: downloading firmware from file 'dvb-usb-dib0700-1.20.fw'
[ 136.159285] dib0700: firmware started successfully.
[ 136.660185] dvb-usb: found a 'Asus My Cinema-U3000Hybrid' in warm state.
[ 136.660277] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
[ 136.660936] DVB: registering new adapter (Asus My Cinema-U3000Hybrid)
[ 136.916083] DVB: registering adapter 0 frontend 0 (DiBcom 7000PC)...
[ 136.978914] xc2028 3-0061: creating new instance
[ 136.978924] xc2028 3-0061: type set to XCeive xc2028/xc3028 tuner
[ 136.979079] input: IR-receiver inside an USB DVB receiver as /devices/pci0000:00/0000:00:1d.7/usb1/1-5/input/input8
[ 136.979167] dvb-usb: schedule remote query interval to 50 msecs.
[ 136.979175] dvb-usb: Asus My Cinema-U3000Hybrid successfully initialized and connected.
[ 136.983150] usbcore: registered new interface driver dvb_usb_dib0700
[ 143.134450] usb 1-5: USB disconnect, address 2
[ 143.134917] xc2028 3-0061: destroying instance
[ 143.135308] dvb-usb: Asus My Cinema-U3000Hybrid successfully deinitialized and disconnected.

after crash:
[ 320.086237] BUG: unable to handle kernel NULL pointer dereference at 00000008
[ 320.086253] IP: [<c03a8a13>] _request_firmware+0x1f3/0x250
[ 320.086273] *pde = 00000000
[ 320.086279] Oops: 0000 [#1] SMP
[ 320.086287] last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
[ 320.086294] Modules linked in: tuner_xc2028 dvb_usb_dib0700 dib7000p dib7000m dvb_usb dvb_core dib3000mc dibx000_common dib0070 binfmt_misc ppdev arc4 ecb lib80211_crypt_wep snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy pcmcia snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device iptable_filter snd yenta_socket ipw2200 soundcore rsrc_nonstatic libipw ip_tables pcmcia_core lib80211 snd_page_alloc lp x_tables joydev psmouse serio_raw parport fbcon tileblit font bitblit softcursor sky2 ohci1394 ieee1394 i915 drm i2c_algo_bit intel_agp agpgart video output
[ 320.086405]
[ 320.086413] Pid: 2348, comm: kdvb-ad-0-fe-0 Not tainted (2.6.31-14-generic #48-Ubuntu) Satellite M50
[ 320.086421] EIP: 0060:[<c03a8a13>] EFLAGS: 00010202 CPU: 0
[ 320.086430] EIP is at _request_firmware+0x1f3/0x250
[ 320.086436] EAX: 00000000 EBX: ef6d0a20 ECX: 00000001 EDX: c07068ec
[ 320.086442] ESI: c07179ac EDI: e41762c8 EBP: e9dedd30 ESP: e9dedcfc
[ 320.086449] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 320.086456] Process kdvb-ad-0-fe-0 (pid: 2348, ti=e9dec000 task=ef213240 task.ti=e9dec000)
[ 320.086462] Stack:
[ 320.086466] 80000300 f6aa0400 000000c0 03400000 00000006 e9dedd69 00000006 00000000
[ 320.086481] <0> e9dedd94 f8502062 e9cc2300 00000000 00000000 e9dedd3c c03a8b12 00000001
[ 320.086496] <0> e9deddcc f851a741 e9dede78 f850285b 00000002 00000002 f6bd86a8 f6bd8000
[ 320.086514] Call Trace:
[ 320.086531] [<f8502062>] ? dib0700_ctrl_wr+0x52/0x70 [dvb_usb_dib0700]
[ 320.086541] [<c03a8b12>] ? request_firmware+0x12/0x20
[ 320.086554] [<f851a741>] ? load_all_firmwares+0x61/0x6b0 [tuner_xc2028]
[ 320.086567] [<f850285b>] ? dib0700_i2c_xfer_legacy+0x17b/0x1a0 [dvb_usb_dib0700]
[ 320.086581] [<f8502062>] ? dib0700_ctrl_wr+0x52/0x70 [dvb_usb_dib0700]
[ 320.086594] [<f850285b>] ? dib0700_i2c_xfer_legacy+0x17b/0x1a0 [dvb_usb_dib0700]
[ 320.086606] [<f851b68b>] ? check_firmware+0x45b/0x870 [tuner_xc2028]
[ 320.086619] [<f851bb05>] ? generic_set_freq+0x65/0x500 [tuner_xc2028]
[ 320.086632] [<f850289b>] ? dib0700_i2c_xfer+0x1b/0x30 [dvb_usb_dib0700]
[ 320.086643] [<c043c634>] ? i2c_transfer+0x94/0xc0
[ 320.086656] [<f822f074>] ? dib7000p_write_word+0x54/0x70 [dib7000p]
[ 320.086668] [<f851c275>] ? xc2028_set_params+0x185/0x276 [tuner_xc2028]
[ 320.086680] [<f823129b>] ? dib7000p_set_frontend+0x4b/0x170 [dib7000p]
[ 320.086691] [<c0150485>] ? try_to_del_timer_sync+0x45/0x50
[ 320.086716] [<f8208a41>] ? dvb_frontend_swzigzag_autotune+0x111/0x260 [dvb_core]
[ 320.086727] [<c013c347>] ? try_to_wake_up+0xf7/0x350
[ 320.086749] [<f8209601>] ? dvb_frontend_swzigzag+0x1d1/0x260 [dvb_core]
[ 320.086770] [<f820a007>] ? dvb_frontend_thread+0x387/0x630 [dvb_core]
[ 320.086781] [<c015c280>] ? autoremove_wake_function+0x0/0x40
[ 320.086802] [<f8209c80>] ? dvb_frontend_thread+0x0/0x630 [dvb_core]
[ 320.086811] [<c015bf8c>] ? kthread+0x7c/0x90
[ 320.086819] [<c015bf10>] ? kthread+0x0/0x90
[ 320.086829] [<c0104007>] ? kernel_thread_helper+0x7/0x10
[ 320.086834] Code: 00 00 00 c7 44 24 04 d0 80 00 00 89 fa 89 34 24 ff 55 e0 83 45 e4 04 8b 45 e4 8b 00 85 c0 89 45 e0 75 d6 e9 52 fe ff ff 8b 45 e8 <8b> 70 08 e8 a5 69 ff ff 89 5c 24 0c 89 74 24 08 89 44 24 04 c7
[ 320.086921] EIP: [<c03a8a13>] _request_firmware+0x1f3/0x250 SS:ESP 0068:e9dedcfc
[ 320.086933] CR2: 0000000000000008
[ 320.086940] ---[ end trace a11811989326c5e4 ]---

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: mimi 1889 F.... pulseaudio
                      mimi 2337 F.... kaffeine
CRDA: Error: [Errno 2] No existe el fichero ó directorio
Card0.Amixer.info:
 Card hw:0 'ICH6'/'Intel ICH6 with ALC250 at irq 17'
   Mixer name : 'Realtek ALC250 rev 2'
   Components : 'AC97a:414c4752'
   Controls : 33
   Simple ctrls : 21
Date: Sun Nov 1 19:40:55 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=bfbc6f57-b442-4720-b0fa-8539aa9ed408
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: TOSHIBA Satellite M50
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic root=UUID=daf7c14d-2fbe-4d17-b6d6-5198a09c03ac ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic N/A
 linux-firmware 1.24
RfKill:

SourcePackage: linux
Tags: kernel-oops
Title: BUG: unable to handle kernel NULL pointer dereference at 00000008
Uname: Linux 2.6.31-14-generic i686
dmi.bios.date: 07/04/2005
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V1.30
dmi.board.name: ECU00
dmi.board.vendor: TOSHIBA
dmi.board.version: Null
dmi.chassis.asset.tag: *
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV1.30:bd07/04/2005:svnTOSHIBA:pnSatelliteM50:pvrPSM50E-03M01XSP:rvnTOSHIBA:rnECU00:rvrNull:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: Satellite M50
dmi.product.version: PSM50E-03M01XSP
dmi.sys.vendor: TOSHIBA

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 429662, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.