usb/170606: r239222 kernel panic at boot - usb locking issue

[Kim Culhan]

>Number:         170606
>Category:       usb
>Synopsis:       r239222 kernel panic at boot - usb locking issue
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Aug 13 14:30:12 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Kim Culhan
>Release:        10.0-current
>Organization:
>Environment:
FreeBSD 10.0-CURRENT #8 r239222M: Mon Aug 13 06:11:45 EDT 2012 
>Description:
kernel panic at boot:

panic: Lock (sx) USB config SX lock not locked @
/usr/src/sys/dev/usb/usb/usb_device.c:2781

serial console not available atm, screen pics:

http://img827.imageshack.us/img827/3622/img0084vc.jpg

http://img705.imageshack.us/img705/9816/img0086dms.jpg

thanks
-kim

>How-To-Repeat:
Boot r239222 with usb enabled
 
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: