From: Wei Yongjun <yjwei@cn.fujitsu.com>
Date: Sun, 26 Apr 2009 15:14:42 +0000 (+0800)
Subject: sctp: fix panic when T4-rto timer expire on removed transport
X-Git-Tag: v2.6.31-rc1~330^2~163^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=10a43cea7da841cf85a778a1a4d367fb2de7cbce;p=pandora-kernel.git

sctp: fix panic when T4-rto timer expire on removed transport

If T4-rto 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)

            <-----------------      ASCONF
                                    (SRC=X)
ASCONF        ----------------->
(Delete IP Address = X)
            <-----------------      ASCONF-ACK
                                    (Success Indication)
            <-----------------      ASCONF
                                    (T4-rto 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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