Re: xennet0: rx no buf

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Fri, Nov 16, 2012 at 08:54:41AM +0200, Jukka Marin wrote:
> Hi,
> 
> A colleague installed NetBSD 6.0 on a virtual machine and now it seems to
> die every die / night, spitting out
> 
> xennet1: rx no buf
> xennet0: rx no buf
> xennet0: rx no buf
> xennet1: rx no buf
> xennet1: rx no buf
> xennet1: rx no buf
> xennet1: rx no buf
> xennet0: rx no buf
> 
> endlessly.  Kernel is a standard DOMU kernel from NetBSD release (I believe).
> This virtual machine has 4 CPU's.
> 
> The system was running an older NetBSD release before, with zero problems.
> 
> Is this a known problem?  How to fix this?

Looks like there's no free memory for the kernel stack.
the outputs of netstat -m and vmstat -m (look for mbpl and mclpl specifically)
may give some hints.
Also, look at the output of netstat -a for socket with large queues.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--