On Mon, Jun 16, 2014 at 11:05:57AM -0700, Cong Wang wrote:

On Mon, Jun 16, 2014 at 5:51 AM, Stefan Priebe - Profihost AG
[off-list ref] wrote:

quoted

Hi,

i'm using a vanilla 3.10.43 kernel and netconsole on top of a bridge.

netconsole is used with vmbr0 (bridge) which is on top of bond0.

If i want to add another bridge to vmbr0 is fails as long as netconsole
is in use.

# brctl addif vmbr0 fwpr2004p0
can't add fwpr2004p0 to bridge vmbr0: Unknown error 524

Kernel output:
netpoll: (null): fwpr2004p0 doesn't support polling, aborting

If i do rmmod netconsole - everything is working fine again.

This is expected, you can't add an interface which doesn't support
netpoll to a bridge which is running netpoll.

You should stop netpoll before adding it.

Or alternatively, update the driver for the fwpr2004p0 to support netpoll, and
you'll be able to add it with netpoll running

Neil

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