tree 9a2accb2150d3bfa7f2efc1a824b43ca654fb7ba
parent 6345b19985e9f3ec31b61720de01806e3ef680fe
author Wei Yongjun <yjwei@cn.fujitsu.com> 1240758882 +0800
committer Vlad Yasevich <vladislav.yasevich@hp.com> 1244034886 -0400

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>