From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Mon, 16 Aug 2010 03:25:00 +0000 (+0000)
Subject: rds: fix a leak of kernel memory
X-Git-Tag: MMI-PSA29.97-13-9~22097^2~186
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f037590fff3005ce8a1513858d7d44f50053cc8f;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

rds: fix a leak of kernel memory

struct rds_rdma_notify contains a 32 bits hole on 64bit arches,
make sure it is zeroed before copying it to user.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Andy Grover <andy.grover@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/rds/recv.c b/net/rds/recv.c
index 795a00b7f2cb..c93588c2d553 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -297,7 +297,7 @@ static int rds_still_queued(struct rds_sock *rs, struct rds_incoming *inc,
 int rds_notify_queue_get(struct rds_sock *rs, struct msghdr *msghdr)
 {
 	struct rds_notifier *notifier;
-	struct rds_rdma_notify cmsg;
+	struct rds_rdma_notify cmsg = { 0 }; /* fill holes with zero */
 	unsigned int count = 0, max_messages = ~0U;
 	unsigned long flags;
 	LIST_HEAD(copy);