kern/48773: Kernel lockup with ath wirless cards

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>Number:         48773
>Category:       kern
>Synopsis:       Kernel lockup with ath wirless cards
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 30 15:35:00 +0000 2014
>Originator:     Bob Nestor
>Release:        NetBSD 6.1.3
>Organization:
>Environment:
NetBSD aplite.test.org 6.1.4 NetBSD 6.1.4 (GENERIC) i386
>Description:
Kernel hangs when a connection is made to a wireless Atheros card.  When hung, 
the kernel won't respond to a Control-Alt-ESC.  Running top up to the point of 
the hang seems to indicate the kernel is not running out of dynamic memory.  
Two Atheros cards have been tested with the same results.  One responds with a 
Vendor/Device code of 0168c/0023 (AR5416) and the second responds with a 
Vendor/Device code of 0168c/0029 (AR9280).
>How-To-Repeat:

>Fix:
unknown