[PATCH for-next 03/20] IB/hns: Add the check for pointer ctrl

[Salil Mehta]

From: Lijun Ou <ouli...@huawei.com>

The pointer ctrl may be null, so we add check for it.

Signed-off-by: Lijun Ou <ouli...@huawei.com>
Reviewed-by: Wei Hu <xavier.hu...@huawei.com>
Signed-off-by: Salil Mehta <salil.me...@huawei.com>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v1.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c 
b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
index 5f76fc1..ea47ec4 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -336,6 +336,12 @@ int hns_roce_v1_post_recv(struct ib_qp *ibqp, struct 
ib_recv_wr *wr,
                }
 
                ctrl = get_recv_wqe(hr_qp, ind);
+               if (unlikely(!ctrl)) {
+                       dev_err(dev, "Get recv wqe failed!\n");
+                       ret = -EINVAL;
+                       *bad_wr = wr;
+                       goto out;
+               }
 
                roce_set_field(ctrl->rwqe_byte_12,
                               RQ_WQE_CTRL_RWQE_BYTE_12_RWQE_SGE_NUM_M,
-- 
1.7.9.5