kern/38258: current hangs when setting tty flags

[martin%duskware.de@localhost]

>Number:         38258
>Category:       kern
>Synopsis:       current hangs hard when setting tty flags
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Mar 18 10:30:00 +0000 2008
>Originator:     Martin Husemann
>Release:        NetBSD 4.99.55
>Organization:
>Environment:
System: NetBSD console 4.99.37 NetBSD 4.99.37 (CONSOLE) #10: Tue Nov 27 
10:34:05 CET 2007 
martin%night-porter.duskware.de@localhost:/usr/src/sys/arch/i386/compile/CONSOLE
 i386
Architecture: i386
Machine: i386
>Description:

Trying to boot a -current kernel on this machine makes it hang hard (can't
even break into ddb) when rc.d tries to set ttyflags.

>How-To-Repeat:

Boot a new kernel on this machine (userland is oldish -current, might be
a compat problem)

>Fix:
n/a