netdev - Re: 2.6.38 dev_watchdog WARNING

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Date:	Tue, 19 Apr 2011 11:20:48 -0700
From:	Ben Greear <greearb@...delatech.com>
To:	tim.gardner@...onical.com
CC:	netdev <netdev@...r.kernel.org>
Subject: Re: 2.6.38 dev_watchdog WARNING

On 04/19/2011 10:40 AM, Tim Gardner wrote:
> I'm seeing a lot of these kinds of bugs: WARNING: at
> /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256
> dev_watchdog+0x213/0x220()
>
> The kernel is 2.6.38.2 plus Ubuntu cruft.
>
> A spot check of the 200+ hits on this string indicates they are
> primarily due to these drivers:
>
> ipheth
> atl1c
> sis900
> r8169
>
> As far as I can tell the warning happens when link is down on the media
> (and has never been link UP) and are sent a transmit packet which never
> completes. Is there a net/core or net/sched requirement to which these
> drivers do not conform ? Are they not correctly indicating link status?

r8169 doesn't report link right for me...

No idea about the rest.

Ben

>
> rtg


-- 
Ben Greear <greearb@...delatech.com>
Candela Technologies Inc  http://www.candelatech.com

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