--- x/drivers/comedi/comedi_fops.c
+++ y/drivers/comedi/comedi_fops.c
@@ -1566,7 +1566,7 @@ static int do_insnlist_ioctl(struct come
 
 	/* Allocate scratch space for all instruction data. */
 	data = kmalloc_array(max_n_data_required, sizeof(unsigned int),
-			     GFP_KERNEL);
+			     GFP_KERNEL | __GFP_ZERO);
 	if (!data) {
 		ret = -ENOMEM;
 		goto error;