usb/125450: Removing USB flash card while being accessed causes kernel panic

[Simson Garfinkel]

Sorry, I've never done this before.

So you want me to build a kernel with options USB_DEBUG and run those  
sysctls after I boot. After the panic, how do I get that stack trace  
from the computer to a disk file? What command should I type?

Regards,


Simson Garfinkel

On Jul 10, 2008, at 1:03 PM, Hans Petter Selasky wrote:

> On Thursday 10 July 2008, Simson Garfinkel wrote:
>> The following reply was made to PR usb/125450; it has been noted by  
>> GNATS.
>>
>> From: Simson Garfinkel <simsong at acm.org>
>> To: linimon at lonesome.com (Mark Linimon)
>> Cc: bug-followup at FreeBSD.org
>> Subject: Re: usb/125450: Removing USB flash card while being accessed
>> causes kernel panic Date: Thu, 10 Jul 2008 12:19:00 -0700
>>
>> I'm happy to get you a stack trace; it's easy to make this happen.  
>> How
>> do I get a stack trace from a kernel panic?
>>
>> On Jul 10, 2008, at 11:29 AM, Mark Linimon wrote:
>>> we're going to need a stack trace, as well.
>>>
>>> mcl
>>
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>
> options USB_DEBUG
>
> and
>
> sysctl hw.usb.umass.debug=-1
> sysctl hw.usb.debug=15
>
> --HPS
>