[PATCH 4.9 53/93] dccp: fix a memleak that dccp_ipv4 doesnt put reqsk properly

From: Greg Kroah-Hartman
Date: Wed Aug 09 2017 - 14:18:33 EST


4.9-stable review patch. If anyone has any objections, please let me know.

------------------

From: Xin Long <lucien.xin@xxxxxxxxx>


[ Upstream commit b7953d3c0e30a5fc944f6b7bd0bcceb0794bcd85 ]

The patch "dccp: fix a memleak that dccp_ipv6 doesn't put reqsk
properly" fixed reqsk refcnt leak for dccp_ipv6. The same issue
exists on dccp_ipv4.

This patch is to fix it for dccp_ipv4.

Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/dccp/ipv4.c | 1 +
1 file changed, 1 insertion(+)

--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -637,6 +637,7 @@ int dccp_v4_conn_request(struct sock *sk
goto drop_and_free;

inet_csk_reqsk_queue_hash_add(sk, req, DCCP_TIMEOUT_INIT);
+ reqsk_put(req);
return 0;

drop_and_free: