kern/41769: mounting the raw block device panics the kernel

[root%ascension.ojctech.com@localhost]

>Number:         41769
>Category:       kern
>Synopsis:       mounting the raw block device panics the kernel
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jul 23 00:40:00 +0000 2009
>Originator:     Charlie Root
>Release:        NetBSD 5.99.15
>Organization:
        
>Environment:
System: NetBSD ascension.ojctech.com 5.99.15 NetBSD 5.99.15 (XEN3_DOMU) #42: 
Tue Jul 21 15:38:00 CDT 2009 
dyoung%cuw.ojctech.com@localhost:/u3/dyoung/pristine-nbsd/i386/O/sys/arch/i386/compile/XEN3_DOMU
 i386
Architecture: i386
Machine: i386
>Description:
Mounting a raw block device such as /dev/rraid0a does not fail
gracefully, but it panics the kernel, instead:

ftp://cuw.ojctech.com/cuw/dyoung-94281864/rraid0a.mount.panic

>How-To-Repeat:
mount /dev/rraid0a /mnt
>Fix:
unknown.