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

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Date:	Thu, 4 Apr 2013 13:53:17 +0100
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

This bug occurs in kernel 3.2.0-39 too.

Is anyone able to offer any advice?  Thanks.



> On 26 March 2013 13:46, Andrew Brooks <arb@....dundee.ac.uk> wrote:
> >
> > 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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