kern/41534: mounting fd(4) causes panic in -current

[mk%kilbi.de@localhost]

>Number:         41534
>Category:       kern
>Synopsis:       mounting fd(4) causes panic in -current
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jun 03 21:35:00 +0000 2009
>Originator:     Markus W Kilbinger
>Release:        NetBSD 5.99.13
>Organization:
>Environment:
        
        
System: NetBSD qie 5.99.13 NetBSD 5.99.13 (Q) #2: Tue Jun  2 20:30:33 MEST 2009 
 root@q:/usr/u/NetBSD/HEAD/src/sys/arch/amd64/compile/Q amd64
Architecture: x86_64
Machine: amd64
>Description:

        -current kernels panic while mounting fd(4) according to
        /etc/fstab's entry:

          fdesc /dev fdesc ro,-o=union 0 0

        mount /dev yields:

          http://nice.afraid.org/fdesc-panic/fdesc-panic.png
>How-To-Repeat:
        Try to mount fd(4) on -current machine (amd64 in my case).
>Fix:
        Unknown.

>Unformatted: