netdev - [PATCH 0/2] avoid possible deadlock while enable and disable bearer

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Date:	Thu, 8 Aug 2013 18:45:01 +0800
From:	Ding Tianhong <dingtianhong@...wei.com>
To:	Jon Maloy <jon.maloy@...csson.com>,
	Allan Stephens <allan.stephens@...driver.com>,
	"David S. Miller" <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>,
	<tipc-discussion@...ts.sourceforge.net>
Subject: [PATCH 0/2] avoid possible deadlock while enable and disable bearer

It will occur two deadlock warming When run the command such as:

tipc-config -netid=1234 -addr=1.1.3 -be=eth:eth0
tipc-config -netid=1234 -addr=1.1.3 -bd=eth:eth0

The reason is that the tipc_link_delete() will cancel the link_timeout() and
disc_timeout() when disable the bearer, the xxx_timeout() will require b_ptr->lock,
but the b_ptr->lock is already hold, so the deadlock will occur.

We need to unlock the b_ptr->lock when calling xxx_timeout().

Ding Tianhong (1):
  tipc: avoid possible deadlock while remove link_timeout()

Wang Weidong (1):
  tipc: avoid possible deadlock while remove disc_timeout()

 net/tipc/bearer.c | 14 ++++++++++----
 net/tipc/link.c   |  2 ++
 2 files changed, 12 insertions(+), 4 deletions(-)

-- 
1.8.2.1

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