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Date: Mon, 12 Jun 2000 11:13:38 -0700 (PDT)
From: alex@wnm.net
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Subject: kern/19219: le driver causes kernel panic during ifconfig
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>Number:         19219
>Category:       kern
>Synopsis:       le driver causes kernel panic during ifconfig
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Jun 12 11:20:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Alex Charalabidis
>Release:        4.0-STABLE
>Organization:
WebNet Memphis
>Environment:
4.0-RELEASE i386
4.0-STABLE i386
>Description:
The le NIC driver causes a kernel panic and reboot when ifconfig is used.
This was observed on two separate machines with different hardware configurations and a DE201 NIC,
and was also reported on -questions by others with different DE20x cards and setups.
The cards I used to test were known to work under 3.x.

Everything from 4.0-R to the current -STABLE displays this behaviour.
The machine boots up fine, recognizes the card and crashes as soon as ifconfig(8) is run.

Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x0
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0x0
stack pointer           = 0x10:0xce323d70
frame pointer           = 0x10:0xce323d84
code segment            = base 0x0, limit 0xffff, tytpe 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 168 (ifconfig)
interrupt mask          = net
trap number             = 12
panic: page fault

>How-To-Repeat:
Install DE20x NIC on 4.0 machine and rebuild kernel with le driver.
Manually run ifconfig on le0 and watch it crash and burn.
>Fix:
Sorry, no fix.

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


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