On Thu, Jan 15, 2004, Marcel Holtmann <[EMAIL PROTECTED]> wrote:
> Hi Philipp,
> 
> > This just happend on our IBM X31 running 2.6.1-vanilla when I disabled
> > the internal bluetooth: (copied by hand from screen):
> > 
> > usb 4-1: USB disconnected, address 2
> > Unable to handle kernel paging request at virtual address 80000234
> >  printing eip:
> > c026d9cf
> > *pde = 00000000
> > Oops: 0002 [#1]
> > CPU:    0
> > EIP:    0060:[<c026d9cf>]   Not tainted
> > EFLAGS: 00010082
> > EIP is at uhci_remove_pending_qhs+0x77/0x94
> > eax: 80000234   ebx: 00000093   ecx: 80000200   edx: d2ccd4fc
> > esi: efb3620c   edi: efb36218   ebp: c03c3ef4   esp: c03c3ed8
> > ds: 007b   es: 007b   ss: 0068
> > Process swapper (pid: 0, threadinfo=c03c2000 task=c03651e0)
> > Stack: 00000003 00001840 efb36000 80000200 efb36218 00000286 efb3620c c03c3f14
> >        c026da8c efb36000 efb36000 efb36000 efb36000 00000001 00000001 c03c3f2c
> >        c0260209 efb36000 c03c3f78 efba0be0 04000001 c03c3f4c c010cad6 0000000b
> > Call Trace:
> >  [<c026da8c>] uhci_irq+0xa0/0xf0
> >  [<c0260209>] usb_hcd_irq+0x2d/0x54
> >  [<c010cad6>] handle_IRQ_event+0x2a/0x54
> >  [<c010cd9e>] do_IRQ+0x82/0xf4
> >  common_interrupt / acpi_proceddor_idel / default_idle / _stect /
> >  cpu_idle / _stect / start_kernel
> >   
> > Code: 89 79 34 89 50 04 89 02 53 9d 3b 75 fc 75 a9 89 f6 ff 75 f8
> >  <0>Kernel panic: Fatal exception in interrupt
> > in interrupt handler - not syncing
> 
> this problem exists if you have compiled the HCI USB driver with the SCO
> audio support. The workaround is to disable it. I haven't seen this bug
> with an OHCI USB card, so I suspect a bug in the uhci_hcd driver, but I
> am not sure.

That address is very odd. It looks like there is some corruption.

It's strange that it only happens with SCO support. SCO is the only code
in hci_usb that uses isochronous transfers, right?

JE



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