RDMA/ocrdma: Avoid reporting wrong completions in case of error CQEs
During cable pull test with a mount over NFS/RDMA, the driver was
reporting error completions when there were no pending requests in the
SQ and RQ. This was triggering a host crash because of reporting
wrong work req id. Avoid this crash by adding a check for SQ and RQ
empty condition and prevent reporting completions if queues are empty.
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index 0d7d808..2b68235 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -2489,6 +2489,11 @@
*stop = true;
expand = false;
}
+ } else if (is_hw_sq_empty(qp)) {
+ /* Do nothing */
+ expand = false;
+ *polled = false;
+ *stop = false;
} else {
*polled = true;
expand = ocrdma_update_err_scqe(ibwc, cqe, qp, status);
@@ -2594,6 +2599,11 @@
*stop = true;
expand = false;
}
+ } else if (is_hw_rq_empty(qp)) {
+ /* Do nothing */
+ expand = false;
+ *polled = false;
+ *stop = false;
} else {
*polled = true;
expand = ocrdma_update_err_rcqe(ibwc, cqe, qp, status);