From: Allan Stephens <allan.stephens@windriver.com>
Date: Tue, 17 Aug 2010 11:00:07 +0000 (+0000)
Subject: tipc: Check for disabled bearer when processing incoming messages
X-Git-Tag: v2.6.37-rc1~147^2~808
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b02b69c8a403859ec72090742727e853d606a325;p=pandora-kernel.git

tipc: Check for disabled bearer when processing incoming messages

Add a check to tipc_recv_msg() to ensure it discards messages
arriving on a newly disabled bearer.  This is needed to deal with a
race condition that can arise if the bearer is in the midst of being
disabled when it receives a message.  Performing the check after
tipc_net_lock has been taken ensures that TIPC's bearers are in a
stable state while the message is being processed.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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