[PATCH 4.9 46/87] IB/rxe: Fix reference leaks in memory key invalidation code

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Bart Van Assche <bart.vanass...@sandisk.com>


[ Upstream commit ab17654476a11a1ed7d89f1104e2acdb7ed1c9ed ]

Signed-off-by: Bart Van Assche <bart.vanass...@sandisk.com>
Reviewed-by: Leon Romanovsky <leo...@mellanox.com>
Reviewed-by: Andrew Boyer <andrew.bo...@dell.com>
Cc: Moni Shoua <mo...@mellanox.com>
Signed-off-by: Doug Ledford <dledf...@redhat.com>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/infiniband/sw/rxe/rxe_req.c  |    1 +
 drivers/infiniband/sw/rxe/rxe_resp.c |    1 +
 2 files changed, 2 insertions(+)

--- a/drivers/infiniband/sw/rxe/rxe_req.c
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -633,6 +633,7 @@ next_wqe:
                                goto exit;
                        }
                        rmr->state = RXE_MEM_STATE_FREE;
+                       rxe_drop_ref(rmr);
                        wqe->state = wqe_state_done;
                        wqe->status = IB_WC_SUCCESS;
                } else if (wqe->wr.opcode == IB_WR_REG_MR) {
--- a/drivers/infiniband/sw/rxe/rxe_resp.c
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@ -893,6 +893,7 @@ static enum resp_states do_complete(stru
                                        return RESPST_ERROR;
                                }
                                rmr->state = RXE_MEM_STATE_FREE;
+                               rxe_drop_ref(rmr);
                        }
 
                        wc->qp                  = &qp->ibqp;