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authorlucien <lucien.xin@gmail.com>2015-12-05 15:19:27 +0800
committerDavid S. Miller <davem@davemloft.net>2015-12-06 13:25:12 -0500
commit8b570dc9f7b634e853866ce40097c0342ac5bb81 (patch)
tree646708d19ab120712d0277c0b5840f30e0b55c3b /net/sctp
parent69b5777f2e5779bb987d4a25a33401d5ac257c14 (diff)
sctp: only drop the reference on the datamsg after sending a msg
If the chunks are enqueued successfully but sctp_cmd_interpreter() return err to sctp_sendmsg() (mainly because of no mem), the chunks will get re-queued, but we are dropping the reference and freeing them. The fix is to just drop the reference on the datamsg just as it had succeeded, as: - if the chunks weren't queued, this is enough to get them freed. - if they were queued, they will get freed when they finally get out or discarded. Signed-off-by: Xin Long <lucien.xin@gmail.com> Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/socket.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index bd57300c8e91..9b6cc6de80d8 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1964,15 +1964,13 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
* breaks.
*/
err = sctp_primitive_SEND(net, asoc, datamsg);
+ sctp_datamsg_put(datamsg);
/* Did the lower layer accept the chunk? */
- if (err) {
- sctp_datamsg_free(datamsg);
+ if (err)
goto out_free;
- }
pr_debug("%s: we sent primitively\n", __func__);
- sctp_datamsg_put(datamsg);
err = msg_len;
if (unlikely(wait_connect)) {