USB kills VMs on 4.3.18

[Jung-uk Kim]

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On 11/10/2014 02:00, Kevin Oberman wrote:
> Sine the upgrade to VB 4.3.18 plugging in my Logitech Harmony 
> control into the USB port of my laptop causes the VM to abort 
> instantly. It will not even start ot boot up until I unplug the 
> device. The device is reserved for VB and has worked fine in the 
> past.
> 
> Looks like some sort of regression.Since the VM dies instantly and 
> block it from rebooting, I'm not to sure how to get any debug 
> information on it.
> 
> FreeBSD rogue 10.1-PRERELEASE FreeBSD 10.1-PRERELEASE #0 r273452: 
> Tue Oct 21 23:00:15 PDT 2014 
> root at rogue:/usr/obj/usr/src/sys/GENERIC  amd64

FYI, incomplete USB support code was committed with r368359.

https://svnweb.freebsd.org/changeset/ports/368359

The USB patch was originally came from this commit:

https://redports.org/changeset/29393

i.e., it was just a stub.

Please try the attached patch, i.e., just replace
patch-src-VBox-Devices-USB-freebsd-USBProxyDevice-freebsd.cpp in files
directory with it, rebuild, and try again.  Note this patch may still
be incomplete.

Jung-uk Kim
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