i386/99851: setting rootdev crashes loader(8)

[trasz]

>Number:         99851
>Category:       i386
>Synopsis:       setting rootdev crashes loader(8)
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 06 19:00:28 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     trasz
>Release:        6.1
>Organization:
>Environment:
FreeBSD traszkan.ds7 6.1-RELEASE-p1 FreeBSD 6.1-RELEASE-p1 #1: Thu Jun 22 15:52:56 CEST 2006     trasz at traszkan.ds7:/usr/obj/usr/src/sys/TRASHCAN  i386
>Description:
Setting "rootdev" variable and trying to boot results in (copied by hand):

OK set rootdev=ufs:/dev/ad2s1a
OK boot
WARNING - don't know how to boot from device 1668444975
panic: free: guard1 failed at /sys/boot/i386/libi386/bootinfo32.c:195
--> Press a key on the console to reboot <--
>How-To-Repeat:
set rootdev=ufs:/dev/ad2s1a
boot

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: