Subject: Re: [PATCH 2.6.35] bonding: prevent netpoll over bonded interfaces

From: Andi Kleen <[email-masked]>
Date: Sat, 26 Jun 2010 00:31:50 +0200

Andy Gospodarek <[email-masked]> writes:

> Support for netpoll over bonded interfaces was added here:
>
> 	commit f6dc31a85cd46a959bdd987adad14c3b645e03c1
> 	Author: WANG Cong <[email-masked]>
> 	Date:   Thu May 6 00:48:51 2010 -0700
>
> 	    bonding: make bonding support netpoll
>
> but it is bad enough that we should probably just disable netpoll over
> bonding until some of the locking logic in the bonding driver is changed
> or converted completely to RCU.  Simple actions like changing the active
> slave in active-backup mode will hang the box if a high enough printk
> debugging level is enabled.

Normally you just need to prevent the printks when called from poll
context. That's not rocket science.

-Andi

-- 
[email-masked] -- Speaking for myself only.