On Tue, Feb 27, 2007 at 09:56:57AM -0800, David Miller wrote:

From: Patrick McHardy <redacted>
Date: Tue, 27 Feb 2007 18:48:19 +0100

quoted

[NET]: Handle disabled preemption in gfp_any()

ctnetlink uses netlink_unicast from an atomic_notifier_chain
(which is called within a RCU read side critical section)
without holding further locks. netlink_unicast calls netlink_trim
with the result of gfp_any() for the gfp flags, which are passed
down to pskb_expand_header. gfp_any() only checks for softirq
context and returns GFP_KERNEL, resulting in this warning:

BUG: sleeping function called from invalid context at mm/slab.c:3032
in_atomic():1, irqs_disabled():0
no locks held by rmmod/7010.

Applied, good catch Patrick.

Breaks -rt, but I will submit a patch to Ingo to that will make this
fix work in the -rt context.  I nevertheless agree that this is a good
catch!!!

						Thanx, Paul