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




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

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

From: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>


[ Upstream commit ab17654476a11a1ed7d89f1104e2acdb7ed1c9ed ]

Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Reviewed-by: Andrew Boyer <andrew.boyer@xxxxxxxx>
Cc: Moni Shoua <monis@xxxxxxxxxxxx>
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 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;