From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Fri, 5 Mar 2010 21:03:35 +0000 (+0000)
Subject: bridge: Fix RCU race in br_multicast_stop
X-Git-Tag: v2.6.34-rc2~48^2~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=10cc2b50eb4b01ca4dc014af2094d28b4ebe20d7;p=pandora-kernel.git

bridge: Fix RCU race in br_multicast_stop

Thanks to Paul McKenny for pointing out that it is incorrect to use
synchronize_rcu_bh to ensure that pending callbacks have completed.
Instead we should use rcu_barrier_bh.

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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