linux-kernel - kernel OOPSes when changing DVB-T adapter in 2.6.21-rc3

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Date:	Fri, 9 Mar 2007 16:41:53 +0100
From:	CIJOML <cijoml@...ny.cz>
To:	linux-dvb@...uxtv.org, linux-kernel@...r.kernel.org
Subject: kernel OOPSes when changing DVB-T adapter in 2.6.21-rc3

Hi,

I am trying change Freecom DVB-T dongle with Leadtek DVB-T dongle and I got 
this OOPS:

----------------------------------

usb 2-3: new high speed USB device using ehci_hcd and address 2
usb 2-3: configuration #1 chosen from 1 choice
dvb-usb: found a 'WideView WT-220U PenType Receiver (Typhoon/Freecom)' in cold 
state, will try to load a firmware
dvb-usb: downloading firmware from file 'dvb-usb-wt220u-02.fw'
usbcore: registered new interface driver dvb_usb_dtt200u
usb 2-3: USB disconnect, address 2
dvb-usb: generic DVB-USB module successfully deinitialized and disconnected.
usb 2-3: new high speed USB device using ehci_hcd and address 3
usb 2-3: configuration #1 chosen from 1 choice
dvb-usb: found a 'WideView WT-220U PenType Receiver (Typhoon/Freecom)' in warm 
state.
dvb-usb: will use the device's hardware PID filter (table count: 15).
DVB: registering new adapter (WideView WT-220U PenType Receiver 
(Typhoon/Freecom)).
DVB: registering frontend 0 (WideView USB DVB-T)...
input: IR-receiver inside an USB DVB receiver as /class/input/input18
dvb-usb: schedule remote query interval to 300 msecs.
dvb-usb: WideView WT-220U PenType Receiver (Typhoon/Freecom) successfully 
initialized and connected.
dvb-usb: recv bulk message failed: -110
usb 2-3: USB disconnect, address 3
BUG: unable to handle kernel paging request at virtual address 00100100
 printing eip:
c027552d
*pde = 36209067
*pte = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: dvb_usb_dtt200u dvb_usb dvb_core dvb_pll ppp_deflate 
zlib_deflate bsd_comp ppp_async ppp_generic slhc bnep rfcomm hidp l2cap lp 
fuse eeprom hci_usb bluetooth eth1394 usbhid 8250_pci 8250 serial_core 
nsc_ircc snd_intel8x0m snd_intel8x0 snd_ac97_codCT 24ec irda ide_cd ac97_bus 
snd_pcm snd_timer snd parport_pc cdrom crc_ccitt ohci1394 ieee1394 8139too 
mii snd_page_alloc parport ohci_hcd i2c_i801 psmouse pcspkr iTCO_wdt 
iTCO_vendor_support rtc uhci_hcd ehci_hcd
CPU:    0
EIP:    0060:[<c027552d>]    Not tainted VLICT 24
EFLAGS: 00010206   (2.6.21-rc3 #2)
EIP is at evdev_disconnect+0x87/0xae
eax: 00000000   ebx: 000ffcf0   ecx: c1916000   edx: f616e000
esi: e7520dc0   edi: f697d800   ebp: f697dec4   esp: c1917e78
ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0068
Process khubd (pid: 130, ti=c1916000 task=c18fea70 task.ti=c1916000)
Stack: 00000000 c037b488 e7520df0 c0273983 00000000 e33ba000 f6f7fc18 fcc2a420
       f1673800 fcc1319f e33ba000 fcc122da fcc29502 f6f7fc18 fcc2a420 f1673800
       fcc12386 f6f7fc18 fcc2a420 f6f7fc00 c0266522 ffffffed f6f7fc18 fcc2a44c
Call Trace:
 [<c0273983>] input_unregister_device+0x89/0x111
 [<fcc1319f>] dvb_usb_remote_exit+0x27/0x32 [dvb_usb]
 [<fcc122da>] dvb_usb_exit+0xb/0x87 [dvb_usb]
 [<fcc12386>] dvb_usb_device_exit+0x30/0x44 [dvb_usb]
 [<c0266522>] usb_unbind_interface+0x3e/0x7c
 [<c023e037>] __device_release_driver+0x6e/0x8b
 [<c023e421>] device_release_driver+0x1d/0x32
 [<c023dadb>] bus_remove_device+0x5b/0x69
 [<c023c612>] device_del+0xfa/0x152
 [<c0264128>] usb_disable_device+0x5c/0xbb
 [<c0260e2c>] usb_disconnect+0x82/0x114
 [<c02618e9>] hub_thread+0x375/0xa76
 [<c02d3061>] __sched_text_start+0x4a9/0x54c
 [<c0115301>] __wake_up_common+0x31/0x4f
 [<c012880b>] autoremove_wake_function+0x0/0x35
 [<c0261574>] hub_thread+0x0/0xa76
 [<c0128750>] kthread+0xa0/0xc8
 [<c01286b0>] kthread+0x0/0xc8
 [<c0104823>] kernel_thread_helper+0x7/0x10
 =======================
Code: e8 fc 0e ea ff 8b 5e 4c eb 1b 8d 83 08 04 00 00 b9 06 00 02 00 ba 1d 00 
00 00 e8 b5 df ee ff 8b 9b 10 04 00 00 81 eb 10 04 00 00 <8b> 83 10 04 00 00 
0f 18 00 90 8d 93 10 04 00 00 8d 46 4c 39 c2
EIP: [<c027552d>] evdev_disconnect+0x87/0xae SS:ESP 0068:c1917e78

---------------------------------

Thanks for fix

Michal
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