From se@x14.mi.uni-koeln.de  Tue Mar 21 16:13:56 1995
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Date: Wed, 22 Mar 1995 00:52:38 +0100
From: Stefan Esser <se@x14.mi.uni-koeln.de>
Reply-To: se@zpr.uni-koeln.de
To: FreeBSD-gnats-submit@freebsd.org
Subject: ifconfig panics kernel built without option NFS
X-Send-Pr-Version: 3.2

>Number:         266
>Category:       kern
>Synopsis:       ifconfig panics kernel built without option NFS
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Mar 21 16:20:01 1995
>Closed-Date:    Sat Jan 20 03:40:17 PST 1996
>Last-Modified:  Sat Jan 20 03:41:43 PST 1996
>Originator:     Stefan Esser
>Release:        FreeBSD 2.1.0-Development i386
>Organization:
Stefan Esser				Internet:	<se@ZPR.Uni-Koeln.DE>
 Zentrum fuer Paralleles Rechnen	Tel:		+49 221 4706019
 Universitaet zu Koeln			FAX:		+49 221 4705160
 Weyertal 80
 50931 Koeln
>Environment:
ASUS SP3G, 486DX2/66 with 16MB RAM and WD 8003 
compatible Ethernet card.

>Description:
My system will not be connected to a LAN anymore, 
so I rebuilt the kernel without NFS.
The kernel built this way panics with a message:

	panic: pmap_zero_page: CMAP busy

at the first call to 'ifconfig'.

I tried to boot single user and issued an 
'ifconfig -a' command, same panic message ...

>How-To-Repeat:
Build kernel with network devices ('de' and 'ed' 
in my case, no SLIP or PPP) and without NFS.

Boot into single user mode.

An 'ifconfig -a' command will panic the system.

>Fix:
Use kernel with NFS defined.
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: mpp 
State-Changed-When: Sat Jan 20 03:40:17 PST 1996 
State-Changed-Why:  
The described problem does not seem to exist in -current. 
>Unformatted:


