kern/44187: The kernel hangs when entering the debugger

[jkuittinen293482%gmail.com@localhost]

>Number:         44187
>Category:       kern
>Synopsis:       The kernel hangs when entering the debugger
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Dec 02 23:40:00 +0000 2010
>Originator:     Jari Kuittinen
>Release:        5.99.41
>Organization:
>Environment:
NetBSD myhost.mydomain.tld 5.99.41 NetBSD 5.99.41 (GENERIC) #0: Thu Dec  2 
07:40:20 UTC 2010  
builds%b8.netbsd.org@localhost:/home/builds/ab/HEAD/i386/201012021200Z-obj/home/builds/ab/HEAD/src/sys/arch/i386/compile/GENERIC
 i386
>Description:
Tested with both serial and pc consoles, on versions 5.99.40 and .41

<BREAK>
fatal breakpoint trap in supervisor mode
trap type 1 code 0 eip c022d604 cs 8 eflags 202 cr2 bb71601c ilevel 8
Stopped in pid 0.2 (system) at  netbsd:breakpoint+0x4:  popl    %ebp
db{0}> cont

<BREAK>
fatal breakpoint trap in supervisor mode
trap type 1 code 0 eip c022d604 cs 8 eflags 202 cr2 cb6d7dae ilevel 8
<hang>

>How-To-Repeat:
Enter ddb, continue, re-enter
>Fix: