RDMA/bnxt_re: Do not add user qps to flushlist

[ Upstream commit a812f2d60a9fb7818f9c81f967180317b52545c0 ]

Driver shall add only the kernel qps to the flush list for clean up.
During async error events from the HW, driver is adding qps to this list
without checking if the qp is kernel qp or not.

Add a check to avoid user qp addition to the flush list.

Fixes: 942c9b6ca8de ("RDMA/bnxt_re: Avoid Hard lockup during error CQE processing")
Fixes: c50866e2853a ("bnxt_re: fix the regression due to changes in alloc_pbl")
Link: https://lore.kernel.org/r/1596689148-4023-1-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index 27e2df44d043dbcf0992dcdacdc5f4f3ea5adff2..cfe5f47d9890e04957253c9c98aa21c34ec01157 100644 (file)
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -789,7 +789,8 @@ static int bnxt_re_handle_qp_async_event(struct creq_qp_event *qp_event,
        struct ib_event event;
        unsigned int flags;
 
-       if (qp->qplib_qp.state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
+       if (qp->qplib_qp.state == CMDQ_MODIFY_QP_NEW_STATE_ERR &&
+           rdma_is_kernel_res(&qp->ib_qp.res)) {
                flags = bnxt_re_lock_cqs(qp);
                bnxt_qplib_add_flush_qp(&qp->qplib_qp);
                bnxt_re_unlock_cqs(qp, flags);