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Date: Thu, 23 Nov 2006 03:25:34 -0500 (EST)
From: Joe Marcus Clarke <marcus@freebsd.org>
Reply-To: Joe Marcus Clarke <marcus@freebsd.org>
To: FreeBSD-gnats-submit@freebsd.org
Cc:
Subject: MSI triggers em0 watchdog failures
X-Send-Pr-Version: 3.113
X-GNATS-Notify:

>Number:         105768
>Category:       kern
>Synopsis:       MSI triggers em0 watchdog failures
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    jhb
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Nov 23 08:30:16 GMT 2006
>Closed-Date:    Fri Jan 12 13:46:54 GMT 2007
>Last-Modified:  Fri Jan 12 13:46:54 GMT 2007
>Originator:     Joe Marcus Clarke
>Release:        FreeBSD 7.0-CURRENT
>Organization:
>Environment:
FreeBSD fugu.marcuscom.com 7.0-CURRENT FreeBSD 7.0-CURRENT #83: Thu Nov
23 01:51:05 EST 2006 root@fugu.marcuscom.com:/space2/obj/usr/src/sys/FUGU  i386


	
>Description:
I just synced with today's -CURRENT, and rendered by port build machine
useless.  With minimal network traffic (just logging in via SSH with a
TCP NFS-mounted home) I get an immediate watchdog timeout on em0, and
they just keep coming as I type in the session.  The machine is
otherwise idle while this is occurring.

Verbose dmesg : http://www.marcuscom.com/downloads/fugu_dmesg.txt
Kernel config : http://www.marcuscom.com/downloads/fugu_kernel.txt

Disabling MSI via hw.pci.enable_msi="0" resolves the problem.  Note:
keeping MSI-X enabled does not trigger the problem.  However, enabling
MSI and disabling MSI-X also triggers the problem.
>How-To-Repeat:
>Fix:
Adding hw.pci.enable_msi="0" to /boot/loader.conf works around the
problem.
>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-bugs->jhb 
Responsible-Changed-By: marcus 
Responsible-Changed-When: Thu Nov 23 08:31:35 UTC 2006 
Responsible-Changed-Why:  
Over to John to possible MSI blacklist inclusion. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=105768 

From: dfilter@FreeBSD.ORG (dfilter service)
To: bug-followup@FreeBSD.org
Cc:  
Subject: Re: kern/105768: commit references a PR
Date: Fri, 12 Jan 2007 13:34:12 +0000 (UTC)

 jhb         2007-01-12 13:33:56 UTC
 
   FreeBSD src repository
 
   Modified files:
     sys/dev/pci          pci.c 
   Log:
   - Condense the comment for Intel chipset MSI blacklist entries.
   - Blacklist the E7210.
   
   PR:             kern/105768 (2)
   Reported by:    marcus (2)
   
   Revision  Changes    Path
   1.332     +3 -7      src/sys/dev/pci/pci.c
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State-Changed-From-To: open->closed 
State-Changed-By: jhb 
State-Changed-When: Fri Jan 12 13:46:29 UTC 2007 
State-Changed-Why:  
Quirk added. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=105768 
>Unformatted:
