From: Ying Xue <ying.xue@windriver.com>
Date: Mon, 21 Apr 2014 02:55:51 +0000 (+0800)
Subject: tipc: use bc_lock to protect node map in bearer structure
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~36^2~348^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28dd94187afd660a350d01d6bad4a915a6d570b8;p=pandora-kernel.git

tipc: use bc_lock to protect node map in bearer structure

The node map variable - 'nodes' in bearer structure is only used by
bclink. When bclink accesses it, bc_lock is held. But when change it,
for instance, in tipc_bearer_add_dest() or tipc_bearer_remove_dest()
the bc_lock is not taken at all. To avoid any inconsistent data, we
should always grab bc_lock while accessing node map variable.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Tested-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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