From e653181dd6b3ad38ce14904351b03a5388f4b0f7 Mon Sep 17 00:00:00 2001
From: James Chapman <jchapman@katalix.com>
Date: Wed, 5 Mar 2008 18:40:01 -0800
Subject: [PATCH] [PPPOL2TP]: Fix SMP issues in skb reorder queue handling

When walking a session's packet reorder queue, use
skb_queue_walk_safe() since the list could be modified inside the
loop.

Rearrange the unlinking skbs from the reorder queue such that it is
done while the queue lock is held in pppol2tp_recv_dequeue() when
walking the skb list.

A version of this patch was suggested by Jarek Poplawski.

Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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