dvb_usb_rtl2831u module cause "oops" on kernel 2.6.32 when loading

[Thomas Holzeisen <thomas@holzeisen.de>]

Hi,

i am using a DVB-T USB-Stick with Realtek RTL2831 chip (14aa:0160) on Debian Lenny having the 
lastest Backport kernel 2.6.32.

> $ uname -a
> Linux xbmc 2.6.32-bpo.5-686 #1 SMP Fri Jun 11 22:20:29 UTC 2010 i686 GNU/Linux

For v4l I took the drivers from here:

> http://linuxtv.org/hg/~jhoogenraad/rtl2831-r2/

The checked out source compile and installs fine. I compiled them starting with "make distclean". 
But when plugging the DVB-Stick this happens:

> [  229.524028] usb 4-2: new high speed USB device using ehci_hcd and address 3
> [  229.658591] usb 4-2: New USB device found, idVendor=14aa, idProduct=0160
> [  229.661204] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> [  229.663841] usb 4-2: Product: DTV Receiver
> [  229.666308] usb 4-2: Manufacturer: DTV Receiver
> [  229.668826] usb 4-2: SerialNumber: 0000000000067936
> [  229.671609] usb 4-2: configuration #1 chosen from 1 choice
> [  230.266960] dvb-usb: found a 'Freecom USB 2.0 DVB-T Device' in warm state.
> [  230.270314] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
> [  230.273641] DVB: registering new adapter (Freecom USB 2.0 DVB-T Device)
> [  230.277461] DVB: registering adapter 0 frontend 0 (Realtek RTL2831 DVB-T)...
> [  230.282081] BUG: unable to handle kernel paging request at 02b65c40
> [  230.285794] IP: [<f7c623ba>] dvb_usb_remote_init+0x12e/0x209 [dvb_usb]
> [  230.291463] *pde = 00000000
> [  230.293969] Oops: 0002 [#1] SMP
> [  230.293969] last sysfs file: /sys/devices/pci0000:00/0000:00:06.1/usb4/4-2/bmAttributes
> [  230.293969] Modules linked in: dvb_usb_rtl2831u(+) dvb_usb_dibusb_common dvb_usb dib3000mc dibx000_common dvb_ttpci dvb_core saa7146_vv videodev v4l1_compat saa7146 videobuf_dma_sg videobuf_core ttpci_eeprom iscsi_trgt crc32c loop snd_hda_codec_nvhdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq snd_timer snd_seq_device snd tpm_tis soundcore tpm shpchp psmouse wmi serio_raw tpm_bios snd_page_alloc pcspkr pci_hotplug processor evdev button ir_core nvidia(P) lirc_imon i2c_nforce2 i2c_core lirc_dev ext3 jbd mbcache raid1 md_mod usbhid hid sg sr_mod cdrom sd_mod crc_t10dif usb_storage ahci ata_generic libata ehci_hcd ohci_hcd scsi_mod usbcore nls_base forcedeth thermal fan thermal_sys [last unloaded: scsi_wait_scan]
> [  230.293969]
> [  230.293969] Pid: 3279, comm: modprobe Tainted: P           (2.6.32-bpo.5-686 #1) Point of View
> [  230.293969] EIP: 0060:[<f7c623ba>] EFLAGS: 00010246 CPU: 0
> [  230.293969] EIP is at dvb_usb_remote_init+0x12e/0x209 [dvb_usb]
> [  230.293969] EAX: 69656148 EBX: f589b000 ECX: c14c18e4 EDX: f589b018
> [  230.293969] ESI: f5904000 EDI: 000003b8 EBP: 00000077 ESP: f5851e88
> [  230.293969]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
> [  230.293969] Process modprobe (pid: 3279, ti=f5850000 task=f5cd4400 task.ti=f5850000)
> [  230.293969] Stack:
> [  230.293969]  f589b018 f5904000 f5904000 f5904864 00000001 f7c61945 f5904418 f80bb8d0
> [  230.293969] <0> f5912000 f5b8f800 f80bad88 00000000 f80bad88 00000000 f5912000 00000000
> [  230.293969] <0> f80bb894 f80ba970 f80b886d 00000000 f80ba960 f5912000 f80c8c98 f591201c
> [  230.293969] Call Trace:
> [  230.293969]  [<f7c61945>] ? dvb_usb_device_init+0x515/0x51c [dvb_usb]
> [  230.293969]  [<f80b886d>] ? rtd2831u_usb_probe+0x19/0x48 [dvb_usb_rtl2831u]
> [  230.293969]  [<f80c8c98>] ? usb_probe_interface+0xe7/0x130 [usbcore]
> [  230.293969]  [<c11b2c22>] ? driver_probe_device+0x8a/0x11e
> [  230.293969]  [<c11b2cf6>] ? __driver_attach+0x40/0x5b
> [  230.293969]  [<c11b2667>] ? bus_for_each_dev+0x37/0x5f
> [  230.293969]  [<c11b2af5>] ? driver_attach+0x11/0x13
> [  230.293969]  [<c11b2cb6>] ? __driver_attach+0x0/0x5b
> [  230.293969]  [<c11b2135>] ? bus_add_driver+0x99/0x1c2
> [  230.293969]  [<c11b2f2b>] ? driver_register+0x87/0xe0
> [  230.293969]  [<f80c8aa6>] ? usb_register_driver+0x5d/0xb4 [usbcore]
> [  230.293969]  [<f80f6000>] ? rtd2831u_usb_module_init+0x0/0x2c [dvb_usb_rtl2831u]
> [  230.293969]  [<f80f6015>] ? rtd2831u_usb_module_init+0x15/0x2c [dvb_usb_rtl2831u]
> [  230.293969]  [<c100113e>] ? do_one_initcall+0x55/0x155
> [  230.293969]  [<c1057dd7>] ? sys_init_module+0xa7/0x1d7
> [  230.293969]  [<c10030fb>] ? sysenter_do_call+0x12/0x28
> [  230.293969] Code: 3e c6 f7 20 74 18 8b 86 a0 00 00 00 55 ff 74 38 04 68 59 38 c6 f7 e8 1b a1 60 c9 83 c4 0c 8b 86 a0 00 00 00 8b 14 24 8b 44 38 04 <f0> 0f ab 02 45 83 c7 08 3b ae a4 00 00 00 7c c2 83 be ac 00 00
> [  230.293969] EIP: [<f7c623ba>] dvb_usb_remote_init+0x12e/0x209 [dvb_usb] SS:ESP 0068:f5851e88
> [  230.293969] CR2: 0000000002b65c40
> [  230.663846] ---[ end trace e2ebfa1976bffdae ]---

Mostly interesting, the modules are still getting loaded:

> $ lsmod | grep dvb
> dvb_usb_rtl2831u       89189  15
> dvb_usb_dibusb_common     4578  1 dvb_usb_rtl2831u
> dvb_usb                13320  2 dvb_usb_rtl2831u,dvb_usb_dibusb_common
> dib3000mc               8544  1 dvb_usb_dibusb_common
> dvb_ttpci              70046  0
> dvb_core               63034  2 dvb_usb,dvb_ttpci
> saa7146_vv             31312  1 dvb_ttpci
> saa7146                 9911  2 dvb_ttpci,saa7146_vv
> ttpci_eeprom            1224  1 dvb_ttpci
> i2c_core               12700  8 dvb_usb,dib3000mc,dibx000_common,dvb_ttpci,videodev,ttpci_eeprom,nvidia,i2c_nforce2
> usbcore                98466  10 dvb_usb_rtl2831u,dvb_usb,lirc_imon,usbhid,usb_storage,ehci_hcd,ohci_hcd

When plugging the usb-stick after boot I am able to use it as intend. But when having it inserted 
during boot the system hangs up. Calling lsusb from console causes the used console to hang up as 
well. Would be great if anyone got a solution for this problem.

Best regards,
Thomas