Re: Preemptive Kernel oops when disconnecting USBcard

I figured out what causes the crash.  I already upgraded the kernel core
to version 2.4.24 however.

The box crashes while unloading the wireless and usb modules only if I
disconnect the USB wireless card _before_ unloading the wireless modules
and usb driver.  Anybody else having the same problem?

at76c503 v0.11 rfmd for the SMC 2662W v2 USB adapter.

> Hi Per,
>
> On Thu, 8 Jan 2004, Per J wrote:
>
>> My kernel is plain vanilla 2.4.22 with following patches against it in
>> the
>> following descending order:
>> -preemptive-2.4.22 patch from kernel.org
>> -patch-2.4.23 UPGRADE to kernel 2.4.23
>> -LVM-1.0.8
>> -cryptoloop
>> -loop-jari
>> -super-freeswan-1.99.8
>>
>> I enabled the preemptive feature and the APIC for nmi_watchdog=2 for
>> this
>> kernel.
>>
>> This is all I have.
>> I couldn't find the opps_file.txt
>>
>> I've upgraded to 2.4.24 and will have to wait until I have physical
>> access
>> to the box to hand copy the oops?
>
> yes, you must either hand copy the Oops or run the syslog to a serial
> port and capture it there (I've only heard this is possible). After that
> process it with ksymoops, otherwise the Oops info is rather useless.
> It may be caused by the driver or the USB subsys, the symbolic call
> stack may help in searching the cause.
>
> You may give uhci.o a try, if possible.
>
> /Jörg
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