Oops in evdev_disconnect for kernel 2.6.23.12

[Berthold Cogel]

Jan  1 17:34:39 wonderland kernel: usb 2-2: USB disconnect, address 3
Jan  1 17:34:39 wonderland kernel: usb 2-2.5: USB disconnect, address 4
Jan  1 17:34:39 wonderland kernel: drivers/input/tablet/wacom_sys.c: 
wacom_sys_irq - usb_submit_urb failed with result -19
Jan  1 17:34:39 wonderland kernel: usb 2-2.6: USB disconnect, address 5
Jan  1 17:34:39 wonderland kernel: BUG: unable to handle kernel paging 
request at virtual address 00100100
Jan  1 17:34:39 wonderland kernel:  printing eip:
Jan  1 17:34:39 wonderland kernel: f8819668
Jan  1 17:34:39 wonderland kernel: *pde = 00000000
Jan  1 17:34:39 wonderland kernel: Oops: 0000 [#1]
Jan  1 17:34:39 wonderland kernel: PREEMPT
Jan  1 17:34:39 wonderland kernel: Modules linked in: isofs 
nls_iso8859_1 nls_cp437 vfat fat radeon drm rfcomm l2cap bluetooth ppdev 
lp fan ac battery joydev dm_crypt wacom dm_snapshot dm_mirror sr_mod 
sd_mod sbp2 usbhid hid ff_memless usb_storage snd_emu10k1_synth 
snd_emux_synth snd_seq_virmidi snd_seq_midi_emul snd_emu10k1 
firmware_class snd_ac97_codec ac97_bus snd_util_mem snd_hwdep 
snd_pcm_oss snd_pcm snd_page_alloc snd_mixer_oss snd_seq_dummy 
snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq 
snd_timer snd_seq_device parport_pc parport rtc i2c_viapro ohci1394 
via_agp ide_cd agpgart snd ehci_hcd emu10k1_gp gameport 8139too 
soundcore thermal uhci_hcd ieee1394 processor button evdev
Jan  1 17:34:39 wonderland kernel: CPU:    0
Jan  1 17:34:39 wonderland kernel: EIP:    0060:[<f8819668>]    Not 
tainted VLI
Jan  1 17:34:39 wonderland kernel: EFLAGS: 00010206   (2.6.23.12 #1)
Jan  1 17:34:39 wonderland kernel: EIP is at evdev_disconnect+0x65/0x9e 
[evdev]
Jan  1 17:34:39 wonderland kernel: eax: 00000000   ebx: 000ffcf0   ecx: 
c1926760   edx: 00000033
Jan  1 17:34:39 wonderland kernel: esi: f7415600   edi: f741564c   ebp: 
f7415654   esp: c1967e68
Jan  1 17:34:39 wonderland kernel: ds: 007b   es: 007b   fs: 0000  gs: 
0000  ss: 0068
Jan  1 17:34:39 wonderland kernel: Process khubd (pid: 136, ti=c1966000 
task=c1926570 task.ti=c1966000)
Jan  1 17:34:39 wonderland kernel: Stack: f7415800 f7402000 f7402758 
f740276c f7b94458 c03454b2 00000000 c03c6eb6
Jan  1 17:34:39 wonderland kernel:        f7bda054 c029178a f788f520 
f7bda000 f9b3c608 f9b3a3ab f7bda000 f7bda000
Jan  1 17:34:39 wonderland kernel:        f7bda01c c0337954 f7bda01c 
f9b3c638 00000000 c02fdb59 f7bda01c f7bda01c
Jan  1 17:34:39 wonderland kernel: Call Trace:
Jan  1 17:34:39 wonderland kernel:  [<c03454b2>] 
input_unregister_device+0x6f/0xff
Jan  1 17:34:39 wonderland kernel:  [<c03c6eb6>] klist_release+0x27/0x30
Jan  1 17:34:39 wonderland kernel:  [<c029178a>] kref_put+0x5f/0x6c
Jan  1 17:34:39 wonderland kernel:  [<f9b3a3ab>] 
wacom_disconnect+0x2b/0x66 [wacom]
Jan  1 17:34:39 wonderland kernel:  [<c0337954>] 
usb_unbind_interface+0x2d/0x6e
Jan  1 17:34:39 wonderland kernel:  [<c02fdb59>] 
__device_release_driver+0x6e/0x8b
Jan  1 17:34:39 wonderland kernel:  [<c02fdeaf>] 
device_release_driver+0x1d/0x32
Jan  1 17:34:39 wonderland kernel:  [<c02fd599>] bus_remove_device+0x6a/0x7a
Jan  1 17:34:39 wonderland kernel:  [<c02fbde3>] device_del+0x1c3/0x234
Jan  1 17:34:39 wonderland kernel:  [<c033567f>] 
usb_disable_device+0x5c/0xbb
Jan  1 17:34:39 wonderland kernel:  [<c0331ff9>] usb_disconnect+0x7e/0xe6
Jan  1 17:34:39 wonderland kernel:  [<c0331fea>] usb_disconnect+0x6f/0xe6
Jan  1 17:34:39 wonderland kernel:  [<c03324db>] hub_thread+0x31c/0xa10
Jan  1 17:34:39 wonderland kernel:  [<c0114e17>] update_curr+0x102/0x12c
Jan  1 17:34:39 wonderland kernel:  [<c0114a13>] 
update_stats_wait_end+0x96/0xb9
Jan  1 17:34:39 wonderland kernel:  [<c01281c7>] 
autoremove_wake_function+0x0/0x33
Jan  1 17:34:39 wonderland kernel:  [<c03321bf>] hub_thread+0x0/0xa10
Jan  1 17:34:39 wonderland kernel:  [<c012810e>] kthread+0x36/0x5c
Jan  1 17:34:39 wonderland kernel:  [<c01280d8>] kthread+0x0/0x5c
Jan  1 17:34:39 wonderland kernel:  [<c01048f7>] 
kernel_thread_helper+0x7/0x10
Jan  1 17:34:39 wonderland kernel:  =======================
Jan  1 17:34:39 wonderland kernel: Code: 5e 4c 81 eb 10 04 00 00 eb 21 
8d 83 08 04 00 00 b9 06 00 02 00 ba 1d 00 00 00 e8 6a 93 95 c7 8b 9b 10 
04 00 00 81 eb 10 04 00 00 <8b> 83 10 04 00 00 0f 18 00 90 8d 83 10 04 
00 00 39 f8 75 cb 8d
Jan  1 17:34:39 wonderland kernel: EIP: [<f8819668>] 
evdev_disconnect+0x65/0x9e [evdev] SS:ESP 0068:c1967e68


I'm using Debian stable/testing/unstable with homemade kernel 2.6.23.12 
(patched with tuxonice-3.0-rc3-for-2.6.23.9).

I tried to get my Wacom Bamboo grafic tablet to work with linux and the 
xorg driver from linuxwacom-0.7.9-4 
(http://linuxwacom.sourceforge.net/). After 'configure/make/make 
install' from source and configuring Xorg, I got the tablet working for 
a simple user. But each time I tried to login with X as root (I know 
.... Bad idea .... :-)) xserver got restarted. I tried to trace the 
situation with stracing gdm. I did this via an ssh session from a second 
computer. Because I tried to follow the forks, I had to kill strace 
after this. Some time after the 'kill', while examining the trace files, 
I recognised the Oops in the window with the ssh session on the second 
computer. The system is still up and running with X.

At the top of the log extract, you can see USB disconnect messages, 
perhaps leading to the Oops. That's strange because I haven't 
disconneted any USB device. The tablet is still connected to the system 
while I write this.

lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333]
00:01.0 PCI bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo 
KT266/A/333 AGP]
00:06.0 RAID bus controller: Promise Technology, Inc. PDC20276 
(MBFastTrak133 Lite) (rev 01)
00:07.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A 
IEEE-1394a-2000 Controller (PHY/Link)
00:09.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 50)
00:09.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 50)
00:09.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 51)
00:0e.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL-8139/8139C/8139C+ (rev 10)
00:0f.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 07)
00:0f.1 Input device controller: Creative Labs SB Live! Game Port (rev 07)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8233A ISA Bridge
00:11.1 IDE interface: VIA Technologies, Inc. 
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:11.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 23)
00:11.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 23)
01:00.0 VGA compatible controller: ATI Technologies Inc RV350 AR [Radeon 
9600]
01:00.1 Display controller: ATI Technologies Inc RV350 AR [Radeon 9600] 
(Secondary)

The USB system seems to be a wreck at the moment after the Oops. lsusb 
and usbview don't work. But keyboard and trackball are still working.


Happy New Year! And thanks for the good work in the past!

Berthold
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