RDMA/hns: Fix init resp when alloc ucontext

The data in resp will be copied from kernel to userspace, thus it needs to
be initialized to zeros to avoid copying uninited stack memory.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: e088a685eae9 ("RDMA/hns: Support rq record doorbell for the user space")
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index e1ee6666f790bce146180965f383d2b074255f21..6e48b1f507cf3df5198fbfb39089b1abfb82bbce 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -338,7 +338,7 @@ static struct ib_ucontext *hns_roce_alloc_ucontext(struct ib_device *ib_dev,
 {
        int ret = 0;
        struct hns_roce_ucontext *context;
-       struct hns_roce_ib_alloc_ucontext_resp resp;
+       struct hns_roce_ib_alloc_ucontext_resp resp = {};
        struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
 
        resp.qp_tab_size = hr_dev->caps.num_qps;