coresight: core: Switch to krealloc_array()

Let the krealloc_array() check for multiplication overflow.

Link: https://lore.kernel.org/r/20210520135041.56163-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20210614175901.532683-2-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index 6c68d34..a7971c6 100644 (file)
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -1730,9 +1730,9 @@ char *coresight_alloc_device_name(struct coresight_dev_list *dict,
        if (idx < 0) {
                /* Make space for the new entry */
                idx = dict->nr_idx;
-               list = krealloc(dict->fwnode_list,
-                               (idx + 1) * sizeof(*dict->fwnode_list),
-                               GFP_KERNEL);
+               list = krealloc_array(dict->fwnode_list,
+                                     idx + 1, sizeof(*dict->fwnode_list),
+                                     GFP_KERNEL);
                if (ZERO_OR_NULL_PTR(list)) {
                        idx = -ENOMEM;
                        goto done;