netdev - Re: niu lock-up (Transmit timed out, resetting) and NETDEV WATCHDOG

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Date:	Thu, 28 Mar 2013 14:52:02 +0000
From:	Andrew Brooks <arb@....dundee.ac.uk>
To:	Linux Net-Dev Mailing List <netdev@...r.kernel.org>
Subject: Re: niu lock-up (Transmit timed out, resetting) and NETDEV WATCHDOG

Hi folks

This is a show-stopper. Does anyone have any ideas?

Thanks!

On 26 March 2013 13:46, Andrew Brooks <arb@....dundee.ac.uk> wrote:
>
> Hello
>
> Using niu driver for this card: Oracle/SUN Multithreaded 10-Gigabit
> Ethernet Network Controller
> after a period (often less than 24 hours) the interface will hang with
> errors every 5 seconds
> "niu: xxx: eth2: Transmit timed out, resetting"
>
> Sometimes also in syslog are messages
> WARNING: at sch_generic:255 dev_watchdog
> NETDEV WATCHDOG: eth2 (niu): transmit queue 10 timed out
>
> I've seen this in kernel 3.5.0-26-generic #42~precise1-Ubuntu SMP
> but I've not seen it in kernel 3.2.0-38-generic #61-Ubuntu SMP
>
> Is there some change between kernels which has broken the driver
> or is the difference elsewhere?
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