kern/123429: "ifconfig nfe up" causes a hard system lockup in 7.0-RELEASE and 7.0-STABLE-042008

[Storm]

>Number:         123429
>Category:       kern
>Synopsis:       "ifconfig nfe up" causes a hard system lockup in 7.0-RELEASE and 7.0-STABLE-042008
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon May 05 18:40:00 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Storm
>Release:        7.0-RELEASE 7.0-STABLE snapshot 4-2008
>Organization:
>Environment:
FreeBSD 7.0-RELEASE FreeBSD 7.0-RELEASE #0:  Sun Feb 24 10:35:36 UTC 2008 root at driscoll.cse.buffalo.edu:/usr/obj/src/sys/GENERIC amd64
>Description:
Nvidia MCP55 built in ethernet hangs the system immediately upon bringing up the interface via DHCP or with a static configuration via ifconfig nfe0 <args>.

relevant dmesg:

nfe0:  <NVIDIA nForce MCP55 Networking Adapter> port 0xe000-0xe007 mem 0xf2005000-0xf2005fff,0xf2006000-0xf20060ff,0xf2007000-0xf200700f irq 23 at device 8.0 on pci0
miibus0:  <MII bus> on nfe0
e1000phy0:  <Marvell 88E1116 Gigabit PHY> PHY 1 on miibus0

ifconfig nfe0

nfe0:  flags=8802>BROADCAST,SIMPLEX,MULTICAST>  metric 0 mtu 1500
options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4>
ether 00:1d:7d:a0:f1:8f
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active


Motherboard model and version:  Gigabyte GA-M57SLI-S4 v2

I'd have given a debug dump but as soon as you bring the interface up the computer has to be hard reset.
>How-To-Repeat:
Simply configure and try to activate the NIC via DHCP or ifconfig.  The hard lock will occur every time.
>Fix:


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