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Date: Mon,  5 Feb 2001 07:37:39 -0800 (PST)
From: blovett@bsdguru.com
Reply-To: blovett@bsdguru.com
To: FreeBSD-gnats-submit@freebsd.org
Subject: Random pagefaults occuring in 4.2-STABLE
X-Send-Pr-Version: 3.2

>Number:         24871
>Category:       i386
>Synopsis:       Pagefaults occur at random on a 4.2-STABLE machine
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Feb 05 07:40:01 PST 2001
>Closed-Date:    Sun Jun 3 15:26:10 PDT 2001
>Last-Modified:  Sun Jun 03 15:28:32 PDT 2001
>Originator:     Ben Lovett
>Release:        FreeBSD 4.2-STABLE i386
>Organization:
San Diego BSD Users Group [http://www.sdbug.org]
>Environment:

FreeBSD venus 4.2-STABLE FreeBSD 4.2-STABLE #0: Wed Jan 31 18:36:01 PST 2001     root@luna:/usr/obj/usr/src/sys/VENUS  i386

>Description:

	This is taken from my original email to stable@freebsd.org:
	Recently, I have been having random page faults, and the application
	that caused the fault is always random, or none at all, just idle.
	These can occur after 2 days uptime, to 5 hours..  This is on a Toshiba
	Satellite 2505CDS running 4.2-STABLE as of Sunday, January 14, 2001.
	They also occured on this same system running 4.2-STABLE as of about a
	month and a half ago.  I don't remember the exact date I cvsup'd.

	Recently, the CVSup date has been discovered (since I did a complete reinstall from CD-ROM and builtworld to STABLE.  That date would be January 15, 2001.

	You can get a copy of my kernel-debug output at http://www.oneinsane.net/~blovett/kernel.debug.txt .  Due to me not being an "expert" on kernel debugging, I am not sure that I did everything up to par.  But, hopefully this will be adaquate for determining what is up.


>How-To-Repeat:

	Currently unknown, as they occur at random.

>Fix:

	None known.


>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: jdp 
State-Changed-When: Sat Jun 2 12:22:11 PDT 2001 
State-Changed-Why:  
I took a look at the code where the trap occurred (ip_input.c 
revision 1.130.2.11 line 492), and also at the revision history 
for this file.  There have been several bug fixes in exactly this 
portion of the code since this revision.  I have a strong suspicion 
that this problem will go away if you upgrade your system to the 
latest -stable, or at least to 4.3-release. 

Please let us know whether this fixes the problem, so that we can 
close the PR if appropriate. 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=24871 
State-Changed-From-To: feedback->closed 
State-Changed-By: jdp 
State-Changed-When: Sun Jun 3 15:26:10 PDT 2001 
State-Changed-Why:  
Submitter has a new laptop and is unable to reproduce the problem. 
He suspects there may have been hardware problems in the old laptop. 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=24871 
>Unformatted:
