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sctp: Make sure we always return valid retransmit path 

commit 4951feda0c60d1ef681f1a270afdd617924ab041
    sctp: Do no select unconfirmed transports for retransmissions

added code to make sure that we do not select unconfirmed paths
for data transmission.  This caused a problem when there are only
2 paths, 1 unconfirmed and 1 unreachable.  In that case, the next
retransmit path returned is NULL and that causes a kernel crash.

The solution is to only change retransmit paths if we found one to use.

Reported-by: Frank Schuster <frank.schuster01@web.de>
Signed-off-b: Vlad Yasevich <vladislav.yasevich@hp.com>
This commit is contained in:
Vlad Yasevich 2010-04-30 22:41:09 -04:00
parent b99a4d53a7
commit d598b166ce
1 changed files with 2 additions and 1 deletions
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3
net/sctp/associola.c
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@ -1324,7 +1324,8 @@ void sctp_assoc_update_retran_path(struct sctp_association *asoc)
}
}
asoc->peer.retran_path = t;
if (t)
asoc->peer.retran_path = t;
SCTP_DEBUG_PRINTK_IPADDR("sctp_assoc_update_retran_path:association"
" %p addr: ",