RDMA/mana_ib: boundary check before installing cq callbacks

Add a boundary check inside mana_ib_install_cq_cb to prevent index overflow.

Fixes: 2a31c5a ("RDMA/mana_ib: Introduce mana_ib_install_cq_cb helper function")
Signed-off-by: Konstantin Taranov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Long Li <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>

Author: Konstantin Taranov

drivers/infiniband/hw/mana/cq.c

@@ -70,6 +70,8 @@ int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)
 	struct gdma_context *gc = mdev_to_gc(mdev);
 	struct gdma_queue *gdma_cq;
 
+	if (cq->queue.id >= gc->max_num_cqs)
+		return -EINVAL;
 	/* Create CQ table entry */
 	WARN_ON(gc->cq_table[cq->queue.id]);
 	gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL);