From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 25 Jul 2013 16:48:32 +0000 (+0300)
Subject: RDMA/cxgb4: Fix stack info leak in c4iw_create_qp()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ae1fe07f3f422c62a0baf6a777141d7110e8a111;p=linux-beck.git

RDMA/cxgb4: Fix stack info leak in c4iw_create_qp()

"uresp.ma_sync_key" doesn't get set on this path so we leak 8 bytes of data.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
---

diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 232040447e8a..a4975e1654a6 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -1657,6 +1657,8 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
 		if (mm5) {
 			uresp.ma_sync_key = ucontext->key;
 			ucontext->key += PAGE_SIZE;
+		} else {
+			uresp.ma_sync_key =  0;
 		}
 		uresp.sq_key = ucontext->key;
 		ucontext->key += PAGE_SIZE;