From: Wei Yongjun <yjwei@cn.fujitsu.com>
Date: Sun, 26 Apr 2009 15:13:35 +0000 (+0800)
Subject: sctp: fix panic when T2-shutdown timer expire on removed transport
X-Git-Tag: v2.6.31-rc1~330^2~163^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6345b19985e9f3ec31b61720de01806e3ef680fe;p=pandora-kernel.git

sctp: fix panic when T2-shutdown timer expire on removed transport

If T2-shutdown timer is expired on a removed transport, kernel
panic will occur when we do failure management on that transport.
You can reproduce this use the following sequence:

  Endpoint A                           Endpoint B
  (ESTABLISHED)                        (ESTABLISHED)

                <-----------------      SHUTDOWN
                                        (SRC=X)
  ASCONF        ----------------->
  (Delete IP Address = X)
                <-----------------      ASCONF-ACK
                                        (Success Indication)
                <-----------------      SHUTDOWN
                                        (T2-shutdown timer expire)
This patch fixed the problem.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
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