linux-kernel - Re: [PATCH] 2.6.19-rc4 - netlink messages created with bad flags in soft

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Message-ID: <20061101131024.GA11316@gospo.rdu.redhat.com>
Date:	Wed, 1 Nov 2006 08:10:25 -0500
From:	Andy Gospodarek <andy@...yhouse.net>
To:	David Miller <davem@...emloft.net>
Cc:	andy@...yhouse.net, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] 2.6.19-rc4 - netlink messages created with bad flags in soft_irq context

On Tue, Oct 31, 2006 at 10:00:47PM -0800, David Miller wrote:
> From: Andy Gospodarek <andy@...yhouse.net>
> Date: Tue, 31 Oct 2006 17:06:00 -0500
> 
> > I've got a kernel built where 
> > 
> > CONFIG_DEBUG_SPINLOCK_SLEEP=y
> > 
> > is in the config and I've noticed some interesting behavior when
> > bringing up bonds in balance-alb mode.  When I start to enslave devices
> > to a bond I get the following in the ring buffer:
> > 
> > BUG: sleeping function called from invalid context at mm/slab.c:3007
> > in_atomic():1, irqs_disabled():0
> 
> As Herbert mentioned, the bonding layer calls into the networking
> in atomic contexts when that is illegal.
> -

Thanks for the feedback.  If it seems the bonding driver is one of the
only culprits, I'll investigate a solution that is specific to bonding
(maybe a workqueue for such calls...) rather that one that effects the
entire stack.

-
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