sctp: fix stream update when processing dupcookie
authorXin Long <lucien.xin@gmail.com>
Tue, 23 May 2017 05:28:54 +0000 (13:28 +0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 24 May 2017 19:21:04 +0000 (15:21 -0400)
Since commit 3dbcc105d556 ("sctp: alloc stream info when initializing
asoc"), stream and stream.out info are always alloced when creating
an asoc.

So it's not correct to check !asoc->stream before updating stream
info when processing dupcookie, but would be better to check asoc
state instead.

Fixes: 3dbcc105d556 ("sctp: alloc stream info when initializing asoc")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sctp/associola.c

index a9708da28eb53ff2987264c6c7d7ca6ec2ff09e9..95238284c422e23fbd834a3aedc54c9243743d0f 100644 (file)
@@ -1176,7 +1176,9 @@ void sctp_assoc_update(struct sctp_association *asoc,
 
                asoc->ctsn_ack_point = asoc->next_tsn - 1;
                asoc->adv_peer_ack_point = asoc->ctsn_ack_point;
-               if (!asoc->stream) {
+
+               if (sctp_state(asoc, COOKIE_WAIT)) {
+                       sctp_stream_free(asoc->stream);
                        asoc->stream = new->stream;
                        new->stream = NULL;
                }