From se@x01.mi.uni-koeln.de  Mon Jan  9 17:27:28 1995
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Date: Tue, 10 Jan 1995 02:26:47 +0100
From: Stefan Esser <se@x01.mi.uni-koeln.de>
Reply-To: se@ZPR.Uni-Koeln.De
To: FreeBSD-gnats-submit@freebsd.org
Subject: PANIC after running Merged Buffer Cache kernel for a few minutes
X-Send-Pr-Version: 3.2

>Number:         102
>Category:       kern
>Synopsis:       PANIC after running Merged Buffer Cache kernel for a few minutes
>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 Jan  9 17:30:00 1995
>Closed-Date:    Sat Sep 23 10:03:59 PDT 1995
>Last-Modified:  Tue Nov 27 18:41:25 PST 2001
>Originator:     Stefan Esser
>Release:        FreeBSD 2.1.0-Development i386
>Organization:
ZPR / Universitaet Koeln
>Environment:
ASUS SP3G 486, DX2/66 CPU, 16MB RAM
NCR 53c810 SCSI host adapter with ST 31200 N disk and HP 1533 DAT
WD 8013 Ethernet
>Description:
Panic after a few minutes of running new kernel built from
Merged Buffer Cache sources.

I tried a 'make' of the top utility, couldn't get a connection
to the MASTER_SITE, aborted the make, and had the kernel crash
with the following panic message:

biodone: page busy < 0, off: 0, foff: 0, resid: 4096, index: 0
 iosize: 8192, lblkno: 0
 valid: 0xff, dirty: 0x0, mapped: 1
panic: biodone: page busy < 0
 
>How-To-Repeat:

Unknown.

>Fix:
	
Unknown.
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: gpalmer 
State-Changed-When: Sat Sep 23 10:03:59 PDT 1995 
State-Changed-Why:  

Haven't seen problems like this in the new VM system for ages... 
Certainly not reproducable anymore. 
>Unformatted:


no
Merged buffer cache: PANIC
