linux-kernel - [PATCH 1/6] coresight: core: Switch to krealloc

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Message-Id: <20210614175901.532683-2-mathieu.poirier@linaro.org>
Date:   Mon, 14 Jun 2021 11:58:56 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     gregkh@...uxfoundation.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/6] coresight: core: Switch to krealloc_array()

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Let the krealloc_array() check for multiplication overflow.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Link: https://lore.kernel.org/r/20210520135041.56163-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---
 drivers/hwtracing/coresight/coresight-core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index 6c68d34d956e..a7971c68b0be 100644
--- 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;
-- 
2.25.1