USB storage corruption/panic when doing file IO and unplugging (another, non-storage) device

[Adrian Chadd]

On 7 October 2011 13:55, Garrett Cooper <yanegomi at gmail.com> wrote:

>> Has anyone seen this before?
>>
>> This is _not_ plug/unplug the active storage device, or another
>> storage device. This is when doing IO on a storage device (whether the
>> root device or a media device) whilst plug/unplug a non-storage USB
>> device (wifi chipsets w/ no driver.)
>
>    Yeah. Ran into it earlier on in the 9.x cycle with twa unplugging
> a USB keyboard when I was rebooting a machine; the panic was fixed in
> twa, not ukbd. I suppose my question is: does this only happen with
> USB, or is firewire affected, and why aren't the devices being
> properly masked against interrupts [in the same queue??] [by
> newbus???]?

Let's wait for hps to get back to us. This seems like something he can
replicate very quickly.



Adrian