netdev - Re: mlx4_core 0000:05:00.0: event 19 arrived

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Message-ID: <20130614161003.GB7310@sbohrermbp13-local.rgmadvisors.com>
Date:	Fri, 14 Jun 2013 11:10:03 -0500
From:	Shawn Bohrer <sbohrer@...advisors.com>
To:	netdev@...r.kernel.org
Cc:	ogerlitz@...lanox.com, amirv@...lanox.com
Subject: Re: mlx4_core 0000:05:00.0: event 19 arrived

On Fri, Jun 14, 2013 at 10:53:42AM -0500, Shawn Bohrer wrote:
> I've been testing 3.10-rc5, and while I'm not sure what exactly I was
> running at the time or if there were any negative effects, but I just
> noticed my dmesg buffer is completely full of the following messages:
> 
> ...
> [137475.687703] mlx4_core 0000:05:00.0: event 19 arrived
> [137475.688944] mlx4_core 0000:05:00.0: event 19 arrived
> [137475.689673] mlx4_core 0000:05:00.0: event 19 arrived
> [137475.697600] mlx4_core 0000:05:00.0: event 19 arrived
> [137475.699125] mlx4_core 0000:05:00.0: event 19 arrived
> ...
> 
> This appears to come from drivers/net/ethernet/mellanox/mlx4/eq.c:473
> 
> $ ethtool -i eth4
> driver: mlx4_en
> version: 2.0 (Dec 2011)
> firmware-version: 2.11.500
> bus-info: 0000:05:00.0
> supports-statistics: yes
> supports-test: yes
> supports-eeprom-access: no
> supports-register-dump: no
> 
> I'll see if I can figure out a workload that reproduced the message
> later today, but perhaps the message is enough to get some ideas from
> the Mellanox folks.

I also just remembered that I had set debug_level=1 on mlx4_core and
that is likely why I am now seeing these messages.  If these messages
are expected and harmless then I'll simply turn off the debug
messages.

--
Shawn

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