RDMA/irdma: Use s/g array in post send only when its valid

Send with invalidate verb call can pass in an
uninitialized s/g array with 0 sge's which is
filled into irdma WQE and causes a HW asynchronous
event.

Fix this by using the s/g array in irdma post send
only when its valid.

Fixes: 551c46e ("RDMA/irdma: Add user/kernel shared libraries")
Signed-off-by: Sindhu-Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20220906223244.1119-5-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/irdma/uk.c b/drivers/infiniband/hw/irdma/uk.c
index d003ad864ee44cc0c6b1edc539a8fba1a15201bf..a6e5d350a94ce8f1e3499fe736bd56cb4abf1fce 100644 (file)
--- a/drivers/infiniband/hw/irdma/uk.c
+++ b/drivers/infiniband/hw/irdma/uk.c
@@ -497,7 +497,8 @@ int irdma_uk_send(struct irdma_qp_uk *qp, struct irdma_post_sq_info *info,
                              FIELD_PREP(IRDMAQPSQ_IMMDATA, info->imm_data));
                i = 0;
        } else {
-               qp->wqe_ops.iw_set_fragment(wqe, 0, op_info->sg_list,
+               qp->wqe_ops.iw_set_fragment(wqe, 0,
+                                           frag_cnt ? op_info->sg_list : NULL,
                                            qp->swqe_polarity);
                i = 1;
        }