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usb visor troubles with fedora kernel 2.4.22-1.2135.nptl



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I am having an issue with visor/usbserial in the subject kernel:

usb-uhci.c: interrupt, status 2, frame# 1672
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
visor.c: Bytes In = 6  Bytes Out = 0
usb.c: USB disconnect on device 00:07.2-1 address 7
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
visor.c: Bytes In = 0  Bytes Out = 0
Unable to handle kernel NULL pointer dereference at virtual address 00000998
~ printing eip:
e1c6b6bc
*pde = 00000000
Oops: 0002
sg visor usbserial floppy sr_mod emu10k1 ac97_codec sound soundcore
agpgart nvidia cisco_ipsec parport_pc lp parport autofs iptable_filter
ip_tables 3c59x mic
CPU:    0
EIP:    0060:[<e1c6b6bc>]    Tainted: P
EFLAGS: 00010246

EIP is at usb_serial_disconnect [usbserial] 0x6c (2.4.22-1.2135.nptl)
eax: 00000000   ebx: d0b2386c   ecx: 00000000   edx: 00000000
esi: d0b23888   edi: 00000001   ebp: d0b23800   esp: dfd33f14
ds: 0068   es: 0068   ss: 0068
Process khubd (pid: 68, stackpage=dfd33000)
Stack: d0b23888 00000000 00000064 e1c6d4e0 e1c6d4c0 00000000 d7d96740
e083032f
~       d9de6400 d0b23800 d9de6404 00000007 00000000 d9de6400 00000100
0000000a
~       df274200 00000000 e0833260 df27430c 00000001 00000010 df274200
e0832c8c
Call Trace:   [<e1c6d4e0>] usb_serial_driver [usbserial] 0x20 (0xdfd33f20)
[<e1c6d4c0>] usb_serial_driver [usbserial] 0x0 (0xdfd33f24)
[<e083032f>] usb_disconnect_R66c7d0ec [usbcore] 0x9f (0xdfd33f30)
[<e0833260>] usb_hub_port_connect_change [usbcore] 0x270 (0xdfd33f5c)
[<e0832c8c>] usb_hub_port_status [usbcore] 0x6c (0xdfd33f70)
[<e0833558>] usb_hub_events [usbcore] 0x2e8 (0xdfd33f90)
[<e08335f5>] usb_hub_thread [usbcore] 0x45 (0xdfd33fbc)
[<e08335b0>] usb_hub_thread [usbcore] 0x0 (0xdfd33fc4)
[<e08335b0>] usb_hub_thread [usbcore] 0x0 (0xdfd33fe0)
[<c010734d>] kernel_thread_helper [kernel] 0x5 (0xdfd33ff0)


Code: 89 90 98 09 00 00 8d 4e 58 ff 43 74 0f 8e b5 04 00 00 0f b6


Any ideas?

- --
csm
Lunar Project Leader
Disclaimer: "I am not a curmudgeon! No... really..."
Addendum: "Bwahahaha! Fire up the orbital mind-control lasers!"
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