[Bluez-users] MSI 6970 removing - kernel freeze

[Bluez-users] MSI 6970 removing - kernel freeze

[Pavel Ruzicka]

Hello,

When I have hci0 up and I remove my USB MSI 6970 dongle, then kernel freezes.

This is copied from the screen:
----------------------------------------------------------------------
kernel panic: fatal exception in interrupt
In interrupt handler - not syncing
EIP is at uhci_remove_pending_qhs+0x61/0xc0 [uhci_hcd]
----------------------------------------------------------------------

lsmod for usb and bluetooth things:
----------------------------------------------------------------------
hci_usb                12288  1
bluetooth              43492  1 hci_usb
usbnet                 15496  0
usblp                  11264  0
uhci_hcd               31116  0
usbcore               107100  6 hci_usb,usbnet,usblp,uhci_hcd
-----------------------------------------------------------------------

When I start computer, hci0 is down. I run hciconfig hci0 up.
After this I have in dmesg this:
-----------------------------------------------------------------------
drivers/usb/core/urb.c: usb_submit_urb: bogus endpoint 3-IN on 
usb-0000:00:07.3-1 (bad maxpacket 0)
hci_usb_isoc_rx_submit: hci0 isoc rx submit failed urb c71c1a14 err -90
drivers/usb/core/urb.c: usb_submit_urb: bogus endpoint 3-IN on 
usb-0000:00:07.3-1 (bad maxpacket 0)
hci_usb_isoc_rx_submit: hci0 isoc rx submit failed urb c71c1a14 err -90
-----------------------------------------------------------------------

I have linux Mandrake 9.2 with vanilla kernel 2.6.2.
I have VIA KT133 chipset vt82c686b.

Is this kernel or hardware bug?
Is this problem of USB or Bluetooth kernel module?

Best regards,

Pavel Ruzicka



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Re: [Bluez-users] MSI 6970 removing - kernel freeze

[Marcel Holtmann]

Hi Pavel,

> When I have hci0 up and I remove my USB MSI 6970 dongle, then kernel freezes.
> 
> This is copied from the screen:
> ----------------------------------------------------------------------
> kernel panic: fatal exception in interrupt
> In interrupt handler - not syncing
> EIP is at uhci_remove_pending_qhs+0x61/0xc0 [uhci_hcd]
> ----------------------------------------------------------------------

this is a known problem with UHCI USB host controllers, but not our
problem. Alan Stern has patches and fixes for it and I think at least
with 2.6.4 this problem should be gone. See the BlueZ and USB mailing
list archives for more details.

> When I start computer, hci0 is down. I run hciconfig hci0 up.
> After this I have in dmesg this:
> -----------------------------------------------------------------------
> drivers/usb/core/urb.c: usb_submit_urb: bogus endpoint 3-IN on 
> usb-0000:00:07.3-1 (bad maxpacket 0)
> hci_usb_isoc_rx_submit: hci0 isoc rx submit failed urb c71c1a14 err -90
> drivers/usb/core/urb.c: usb_submit_urb: bogus endpoint 3-IN on 
> usb-0000:00:07.3-1 (bad maxpacket 0)
> hci_usb_isoc_rx_submit: hci0 isoc rx submit failed urb c71c1a14 err -90
> -----------------------------------------------------------------------

This one is new and Todd E. Johnson looked at it, but I have no time to
investigate on this problem. The only solution I can tell you is to
disable CONFIG_BT_HCIUSB_SCO.

> I have linux Mandrake 9.2 with vanilla kernel 2.6.2.

Try 2.6.3. Maybe it is already fixed.

> Is this kernel or hardware bug?

It's a kernel problem.

> Is this problem of USB or Bluetooth kernel module?

I am quite sure that this is an USB problem.

Regards

Marcel




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[Bluez-users] Re: MSI 6970 removing - kernel freeze

[Pavel Ruzicka]

Hello,

today I was testing this with new kernel 2.6.3 and problem is
identical like in kernel 2.6.2.

Best regards,

Pavel Ruzicka
 
> When I have hci0 up and I remove my USB MSI 6970 dongle, then kernel
> freezes.
>
> This is copied from the screen:
> ----------------------------------------------------------------------
> kernel panic: fatal exception in interrupt
> In interrupt handler - not syncing
> EIP is at uhci_remove_pending_qhs+0x61/0xc0 [uhci_hcd]
> ----------------------------------------------------------------------
>
> When I start computer, hci0 is down. I run hciconfig hci0 up.
> After this I have in dmesg this:
> -----------------------------------------------------------------------
> drivers/usb/core/urb.c: usb_submit_urb: bogus endpoint 3-IN on
> usb-0000:00:07.3-1 (bad maxpacket 0)
> hci_usb_isoc_rx_submit: hci0 isoc rx submit failed urb c71c1a14 err -90
> drivers/usb/core/urb.c: usb_submit_urb: bogus endpoint 3-IN on
> usb-0000:00:07.3-1 (bad maxpacket 0)
> hci_usb_isoc_rx_submit: hci0 isoc rx submit failed urb c71c1a14 err -90
> -----------------------------------------------------------------------



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Re: [Bluez-users] Re: MSI 6970 removing - kernel freeze

[Pavel Ruzicka]

Hello,

> > When I have hci0 up and I remove my USB MSI 6970 dongle, then kernel
> > freezes.

Workaround is to make "hciconfig hci0 down" before removing USB dongle
from computer.

Pavouk



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Re: [Bluez-users] Re: MSI 6970 removing - kernel freeze

[Marcel Holtmann]

Hi Pavel,

> > > When I have hci0 up and I remove my USB MSI 6970 dongle, then kernel
> > > freezes.
> 
> Workaround is to make "hciconfig hci0 down" before removing USB dongle
> from computer.

or you don't select CONFIG_BT_HCIUSB_SCO in your kernel config.

Regards

Marcel




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