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

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.