From: Andy Gospodarek <andy@greyhouse.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.