panic on (hdd)load

[Uwe Grohnwaldt]

Hans Petter Selasky wrote:
> On Saturday 03 January 2009, Thomas Sparrevohn wrote:
>   
>> On Saturday 03 January 2009 00:22:57 Uwe Grohnwaldt wrote:
>>
>>
>> This error occurs because of some DMA corruption when the PM changes was
>> added to the ATA framework. The error is actually related to the USB Umass
>> device.
>>
>> HPS has already identified the issue in the new USB stack but I don't think
>> it has been solved yet ;-(
>>
>> Try to disable umass devices and see what happens
>>
>>     
>
> Here is the patch I've made. Probably you can or have to make the re-alignment 
> unconditional.
>
> http://perforce.freebsd.org/chv.cgi?CH=154181
>
>   
I tried the patch and disabled umass - but the panic comes after a short 
time of hdd-i/o.