From: stephen hemminger <shemminger@vyatta.com>
Date: Mon, 15 Nov 2010 06:38:13 +0000 (+0000)
Subject: bridge: fix RCU races with bridge port
X-Git-Tag: v2.6.38-rc1~476^2~563
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b5ed54e94d324f17c97852296d61a143f01b227a;p=pandora-kernel.git

bridge: fix RCU races with bridge port

The macro br_port_exists() is not enough protection when only
RCU is being used. There is a tiny race where other CPU has cleared port
handler hook, but is bridge port flag might still be set.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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