RDMA/rxe: Use the correct size of wqe when processing SRQ

The memcpy() that copies a WQE from a SRQ the QP uses an incorrect size.
The size should have been the size of the rxe_send_wqe struct not the size
of a pointer to it. The result is that IO operations using a SRQ on the
responder side will fail.

Fixes: ec0fa2445c18 ("RDMA/rxe: Fix over copying in get_srq_wqe")
Link: https://lore.kernel.org/r/20210729220039.18549-2-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c
index 3743dc3..360ec67 100644 (file)
--- a/drivers/infiniband/sw/rxe/rxe_resp.c
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@ -318,7 +318,7 @@ static enum resp_states get_srq_wqe(struct rxe_qp *qp)
                pr_warn("%s: invalid num_sge in SRQ entry\n", __func__);
                return RESPST_ERR_MALFORMED_WQE;
        }
-       size = sizeof(wqe) + wqe->dma.num_sge*sizeof(struct rxe_sge);
+       size = sizeof(*wqe) + wqe->dma.num_sge*sizeof(struct rxe_sge);
        memcpy(&qp->resp.srq_wqe, wqe, size);
 
        qp->resp.wqe = &qp->resp.srq_wqe.wqe;