Re: vmx0: watchdog timeout on queue 2, no interrupts on BSP

From: Patrick Kelsey <>
Date: Sat, 20 Jul 2019 13:08:21 -0400
On Fri, Jul 19, 2019 at 10:07 AM Andriy Gapon <> wrote:

> Recently we experienced a strange problem.
> We noticed a lot of these messages in the logs:
> vmx0: watchdog timeout on queue 2
> (always queue 2)
> Also, we noticed that connections to some end points did not work at all
> while others worked without problems.  I assume that that was because
> specific flows got assigned to that queue 2.
> Further investigation has shown that none of interrupts assigned to the
> BSP has ever fired (since boot, of course).  That included vmx0:rx2 and
> vmx0:tx2.  But also interrupts for other drivers as well.
> Trying to get more information I rebooted the system and the problem
> disappeared.
> Has anyone seen anything like that?
> Any thoughts on possible causes?
> Any suggestions what to check if/when the problem reoccurs?
> Thanks!
If you are running head at or after r347221 or stable/12 at or after r349112,
then this could be due to (see Comment 4 -
short story is that an iflib change has broken the vmx driver).

Received on Sat Jul 20 2019 - 15:08:40 UTC

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