kern/39050: kernel crash on disconnect of umodem device

[leo%marco.de@localhost]

>Number:         39050
>Category:       kern
>Synopsis:       kernel crash on disconnect of umodem device
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 27 09:20:00 +0000 2008
>Originator:     Matthias Pfaller
>Release:        NetBSD 4.99.67, last cvs update on 2008-06-26
>Organization:
Matthias Pfaller                            Software Entwicklung
marco Systemanalyse und Entwicklung GmbH    Tel   +49 8131 5161-41
Hans-Böckler-Str. 2, D 85221 Dachau         Fax   +49 8131 5161-66
http://www.marco.de/                        Email leo%dachau.marco.de@localhost
>Environment:
System: NetBSD joghurt 4.99.67 NetBSD 4.99.67 (JOGHURT) #6: Thu Jun 26 19:16:20 
CEST 2008
Architecture: i386
Machine: i386
>Description:
        When disconnecting umodem devices, the kernel crashes.
>How-To-Repeat:
        Connect an umodem device (e.g. a Nokia 6110) to your NetBSD system.
        Disconnect it and your computer will crash.
>Fix: