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Message-Id: <201107291015.p6TAFSFb002743@gk-intern.nepustil.net>
Date: Fri, 29 Jul 2011 10:15:28 GMT
From: Kurt Jaeger <pi@nepustil.net>
Reply-To: Kurt Jaeger <pi@nepustil.net>
To: FreeBSD-gnats-submit@freebsd.org
Cc: support@nepustil.net
In-Reply-To: <20110729073916.GZ74872@complx.nepustil.net>
Subject: em watchdog timeouts
X-Send-Pr-Version: 3.113
X-GNATS-Notify:

>Number:         159294
>Category:       kern
>Synopsis:       [em] em watchdog timeouts
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-net
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jul 29 12:50:10 UTC 2011
>Closed-Date:    
>Last-Modified:  Fri Jul 29 20:42:36 UTC 2011
>Originator:     Kurt Jaeger
>Release:        FreeBSD 8.2-STABLE i386
>Organization:
-
>Environment:
System: FreeBSD gk-intern.nepustil.net 8.2-STABLE FreeBSD 8.2-STABLE #0: Thu Jul 28 16:46:30 UTC 2011 pi@gk-intern.nepustil.net:/usr/obj/usr/src/sys/GENERIC i386

>Description:

Jul 29 09:11:58 gk-intern kernel: em4: Watchdog timeout -- resetting
Jul 29 09:11:58 gk-intern kernel: wan0: link state changed to DOWN
Jul 29 09:12:00 gk-intern kernel: wan0: link state changed to UP

em0@pci0:1:0:0: class=0x020000 card=0x00008086 chip=0x10d38086 rev=0x00 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Intel 82574L Gigabit Ethernet Controller (82574L)'
    class      = network
    subclass   = ethernet
    bar   [10] = type Memory, range 32, base 0xfd9c0000, size 131072, enabled
    bar   [18] = type I/O Port, range 32, base 0x9f00, size 32, enabled
    bar   [1c] = type Memory, range 32, base 0xfd9fc000, size 16384, enabled

[...]

em4@pci0:5:10:0:        class=0x020000 card=0x10768086 chip=0x10768086 rev=0x05 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Gigabit Ethernet Controller (82541EI)'
    class      = network
    subclass   = ethernet
em5@pci0:5:11:0:        class=0x020000 card=0x10768086 chip=0x10768086 rev=0x05 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Gigabit Ethernet Controller (82541EI)'
    class      = network
    subclass   = ethernet

There are other em interfaces in this box, but they do not have
the timeout problem:

dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.2.3
dev.em.1.%desc: Intel(R) PRO/1000 Network Connection 7.2.3
dev.em.2.%desc: Intel(R) PRO/1000 Network Connection 7.2.3
dev.em.3.%desc: Intel(R) PRO/1000 Network Connection 7.2.3
dev.em.4.%desc: Intel(R) PRO/1000 Legacy Network Connection 1.0.3
dev.em.5.%desc: Intel(R) PRO/1000 Legacy Network Connection 1.0.3

Why are em4 and 5 using the Legacy ?

>How-To-Repeat:
	Good question! It happens a few times a day

>Fix:

	no solution as of now.


>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-bugs->freebsd-net 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Fri Jul 29 20:42:18 UTC 2011 
Responsible-Changed-Why:  
Over to maintainer(s). 

http://www.freebsd.org/cgi/query-pr.cgi?pr=159294 
>Unformatted:
