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Date: Tue, 09 Sep 2008 15:05:43 +0100
From: Bruce M Simpson <bms@incunabulum.net>
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Subject: Panic when detaching Vodafone 3G card
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Hi,

I just acquired one of these cards, it attaches as a USB cardbus device.

This is just to say that I can reproduce the problem described here:
    http://www.rinta-aho.org/docs/option3g/option.html

The driver support was originally committed here:
    http://www.freebsd.org/cgi/query-pr.cgi?pr=112161&cat=

...the ubsa driver attaches to the virtual modem port.

If I unplug it, the kernel panics.

The panic is in kobj_delete() (a null pointer reference) and it's on the 
usb detach path. Unfortunately I wasn't able to get a backtrace this 
time around.

PS Does anybody know if ubsa will be ported to the new USB driver framework?

cheers
BMS