libhns: Fix uninitialized qp attr when flush cqe

[ Upstream commit 23c2104 ]

When flushing cqe, the state of qp needs to be modified. The incoming qp
attr is not initialized, which may lead to undefined behavior.

Fixes: e1726e9 ("libhns: Support flush cqe for hip08 in user space")
Signed-off-by: Chengchang Tang <[email protected]>
Signed-off-by: Junxian Huang <[email protected]>
Signed-off-by: Nicolas Morey <[email protected]>

providers/hns/hns_roce_u_hw_v2.c

@@ -360,7 +360,7 @@ static int hns_roce_u_v2_modify_qp(struct ibv_qp *qp, struct ibv_qp_attr *attr,
 
 static int hns_roce_flush_cqe(struct hns_roce_qp **cur_qp, struct ibv_wc *wc)
 {
- struct ibv_qp_attr attr;
+ struct ibv_qp_attr attr = {};
  int attr_mask;
 
  if ((wc->status != IBV_WC_SUCCESS) &&
@@ -1216,8 +1216,8 @@ int hns_roce_u_v2_post_send(struct ibv_qp *ibvqp, struct ibv_send_wr *wr,
  struct hns_roce_qp *qp = to_hr_qp(ibvqp);
  struct hns_roce_sge_info sge_info = {};
  struct hns_roce_rc_sq_wqe *wqe;
+ struct ibv_qp_attr attr = {};
  unsigned int wqe_idx, nreq;
- struct ibv_qp_attr attr;
  int ret;
 
  ret = check_qp_send(ibvqp, ctx);
@@ -1343,7 +1343,7 @@ static int hns_roce_u_v2_post_recv(struct ibv_qp *ibvqp, struct ibv_recv_wr *wr,
  struct hns_roce_context *ctx = to_hr_ctx(ibvqp->context);
  struct hns_roce_qp *qp = to_hr_qp(ibvqp);
  unsigned int wqe_idx, nreq, max_sge;
- struct ibv_qp_attr attr;
+ struct ibv_qp_attr attr = {};
  int ret;
 
  ret = check_qp_recv(ibvqp, ctx);