From nobody@FreeBSD.org  Wed Feb  6 17:20:56 2002
Return-Path: <nobody@FreeBSD.org>
Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21])
	by hub.freebsd.org (Postfix) with ESMTP id DFF8237B492
	for <freebsd-gnats-submit@FreeBSD.org>; Wed,  6 Feb 2002 17:20:33 -0800 (PST)
Received: (from nobody@localhost)
	by freefall.freebsd.org (8.11.6/8.11.6) id g171KXD03907;
	Wed, 6 Feb 2002 17:20:33 -0800 (PST)
	(envelope-from nobody)
Message-Id: <200202070120.g171KXD03907@freefall.freebsd.org>
Date: Wed, 6 Feb 2002 17:20:33 -0800 (PST)
From: Alex Baram <alex@xig.com>
To: freebsd-gnats-submit@FreeBSD.org
Subject: Kernel panics when checking-out a tree (disk activity)
X-Send-Pr-Version: www-1.0

>Number:         34680
>Category:       kern
>Synopsis:       Kernel panics when checking-out a tree (disk activity)
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Feb 06 17:30:01 PST 2002
>Closed-Date:    Sun Aug 25 22:08:29 PDT 2002
>Last-Modified:  Sun Aug 25 22:08:29 PDT 2002
>Originator:     Alex Baram
>Release:        4.3-RELEASE
>Organization:
Xi Graphics, Inc.
>Environment:
FreeBSD x.xig.com 4.3-RELEASE FreeBSD 4.3-RELEASE #0: Sat Apr 21 10:54:49 GMT 2001     jkh@narf.osd.bsdi.com:/usr/src/sys/compile/GENERIC  i386
>Description:
We are having problems with our SMP machine running FreeBSD
4.3-RELEASE.  The machine reboots when there is heavy disk activity.
The kernel panics and a msg is printed to the screen several times
after the kernel panic:

ahc0: Timeout SCB already complete.  Interrupts may not be
functioning.

Kernel panic:

Fatal trap 12: page fault while in kernel mode.

fault virtual address = 0x70
fault code = supervisor read, page not present

instruction pointer = 0x8: 0xc01aece8
stack pointer = 0x10:0xc03831c4
frame pointer = 0x10:0xc03831e8
code segment = base 0x0, limit 0xfffff, type 0x1b
             = DPL0, pres 1, def32 1, gren 1

eflags       = interrupt enabled, resume, IOPL=0

current process = Idle
irq mask = net tty bio cam
trap number = 12
panic: page fault

syncing disks... 

Several users can be editing files on the machine.  Once someone tries
to check-out a cvs repository on this machine, it crashes.

The machine is running the generic kernel.

Hardware:

Dual PII-933
512MB ram
Adaptec 29160 U160 SCSI-3
Dec tulip nic
35GB seagate ST33670SLW 5063 SCSI-3


Thanks!


>How-To-Repeat:
Heavy disk activity
>Fix:
      
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: keramida 
State-Changed-When: Sun Aug 25 22:03:29 PDT 2002 
State-Changed-Why:  
Is this still causing you troubles with newer FreeBSD releases? 
Have you tried installing one of 4.6-RELEASE or 4.6.2-RELEASE? 

http://www.freebsd.org/cgi/query-pr.cgi?pr=34680 
State-Changed-From-To: feedback->closed 
State-Changed-By: keramida 
State-Changed-When: Sun Aug 25 22:08:12 PDT 2002 
State-Changed-Why:  
Mail to submitter bounces. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=34680 
>Unformatted:
