diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index fb5ddf3864fd..b045a210e43a 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1357,6 +1357,11 @@ static int fastrpc_cb_probe(struct platform_device *pdev)
 	of_property_read_u32(dev->of_node, "qcom,nsessions", &sessions);
 
 	spin_lock_irqsave(&cctx->lock, flags);
+	if (cctx->sesscount >= FASTRPC_MAX_SESSIONS) {
+		dev_err(&pdev->dev, "too many sessions\n");
+		spin_unlock_irqrestore(&cctx->lock, flags);
+		return -ENOSPC;
+	}
 	sess = &cctx->session[cctx->sesscount];
 	sess->used = false;
 	sess->valid = true;