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Date: Fri, 31 Aug 2001 14:22:55 -0700 (PDT)
From: Paul English <penglish@thermal.hydro.washington.edu>
Reply-To: penglish@thermal.hydro.washington.edu
To: FreeBSD-gnats-submit@freebsd.org
Subject: System crash w/err: AHC0; AHC_INTR - referenced SCB not valid
X-Send-Pr-Version: 3.2

>Number:         30241
>Category:       kern
>Synopsis:       System crash w/err: AHC0; AHC_INTR - referenced SCB not valid
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    gibbs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Aug 31 14:30:01 PDT 2001
>Closed-Date:    Mon Aug 15 13:14:09 GMT 2005
>Last-Modified:  Mon Aug 15 13:14:09 GMT 2005
>Originator:     Paul English
>Release:        FreeBSD 4.1.1-RELEASE i386
>Organization:
University of Washington, Civil Eng Dept, Hydro research group
>Environment:

	Adaptec 2940UW controller on Dual PIII w/Tyan S1834 motherboard, 1 GB PC133RAM. 1 internal IDE HDD, and 1 external SCSI-IDE RAID 5 array. Arena 9000EX model.

>Description:

	When a certain (custom C) program is run which reads and writes a great deal to the array the following error occurs:
	AHC0; AHC_INTR - referenced SCB not valid during SELTO SCB(15, 12)
	usually repeated many times followed quickly by a system crash.

>How-To-Repeat:

	Difficult/impossible to repeat outside of our environment.

>Fix:

	

>Release-Note:
>Audit-Trail:

From: Kris Kennaway <kris@obsecurity.org>
To: Paul English <penglish@thermal.hydro.washington.edu>
Cc: FreeBSD-gnats-submit@freebsd.org
Subject: Re: kern/30241: System crash w/err: AHC0; AHC_INTR - referenced SCB not valid
Date: Fri, 31 Aug 2001 16:13:28 -0700

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 On Fri, Aug 31, 2001 at 02:22:55PM -0700, Paul English wrote:
 
 > 	Adaptec 2940UW controller on Dual PIII w/Tyan S1834 motherboard, 1 GB PC=
 133RAM. 1 internal IDE HDD, and 1 external SCSI-IDE RAID 5 array. Arena 900=
 0EX model.
 >=20
 > >Description:
 >=20
 > 	When a certain (custom C) program is run which reads and writes a great =
 deal to the array the following error occurs:
 > 	AHC0; AHC_INTR - referenced SCB not valid during SELTO SCB(15, 12)
 > 	usually repeated many times followed quickly by a system crash.
 >=20
 > >How-To-Repeat:
 >=20
 > 	Difficult/impossible to repeat outside of our environment.
 
 I wonder how you expect anyone to fix this, then.
 
 Kris
 
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Responsible-Changed-From-To: freebsd-bugs->gibbs 
Responsible-Changed-By: dwmalone 
Responsible-Changed-When: Sat Sep 1 04:37:23 PDT 2001 
Responsible-Changed-Why:  
Justin - do you know if any of the changes between 4.1.1 and 4.4 are likely 
to have fixed this problem? They are seeing a message: 
AHC0; AHC_INTR - referenced SCB not valid during SELTO SCB(15, 12) 
on heavy disk access. 


http://www.FreeBSD.org/cgi/query-pr.cgi?pr=30241 

From: David Malone <dwmalone@maths.tcd.ie>
To: Paul English <penglish@thermal.hydro.washington.edu>
Cc: FreeBSD-gnats-submit@freebsd.org
Subject: Re: kern/30241: System crash w/err: AHC0; AHC_INTR - referenced SCB not valid
Date: Sat, 1 Sep 2001 12:39:30 +0100

 On Fri, Aug 31, 2001 at 02:22:55PM -0700, Paul English wrote:
 > >Originator:     Paul English
 > >Release:        FreeBSD 4.1.1-RELEASE i386
 
 There have been several bug fdixes in the ahc code since 4.1.1 -
 is it possible for you to try a newer kernel? I'll assign the PR
 to Justin Gibbs, who may know if any fixes have been made which
 are likely to help your situation.
 
 	David.
State-Changed-From-To: open->closed 
State-Changed-By: gibbs 
State-Changed-When: Mon Aug 15 13:13:56 GMT 2005 
State-Changed-Why:  
Feedback timeout. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=30241 
>Unformatted:
