i386/103697: Upgrade to 6.2 STABLE hangs on reboot on SMP Dell PowerEdge 1750

[Sean Benoit]

>Number:         103697
>Category:       i386
>Synopsis:       Upgrade to 6.2 STABLE hangs on reboot on SMP Dell PowerEdge 1750
>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:   Tue Sep 26 22:00:30 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Sean Benoit
>Release:        6.2 STABLE
>Organization:
Digital Jungle
>Environment:
FreeBSD mail-server.digital-jungle.com 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #0: Tue Sep 26 17:24:23 UTC 2006     tarzan at mail-server.digital-jungle.com:/usr/obj/usr/src/sys/MAIL-SERVER  i386
>Description:
I CVSUP'd two Dell PowerEdge 1750 dual Xeon 2.4GHz FreeBSD 6.1 STABLE servers. Following the CVSUP I rebooted into single user mode and installed the new kernel and installworld. On subsequent reboot the system hung while detecting CPU #2 and would not continue. Noticed that the build was 6.2 PRE-RELEASE. I can still boot into safe mode. Alternatively, I can boot into default mode by disabling the second CPU in the Dell BIOS. Please help.
>How-To-Repeat:
Upgrade 6.1 stable on a multiple CPU dell PowerEdge 1750, reboot in to single user mode to install the kernel and world, then reboot and watch it hang...
>Fix:
Boot into safe mode or disable second CPU in BIOS.
>Release-Note:
>Audit-Trail:
>Unformatted: