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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>,
	coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>,
	Mike Leach <mike.leach@linaro.org>, Leo Yan <leo.yan@linaro.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 1/1] coresight: core: Switch to krealloc_array()
Date: Thu, 20 May 2021 16:50:41 +0300	[thread overview]
Message-ID: <20210520135041.56163-1-andriy.shevchenko@linux.intel.com> (raw)

Let the krealloc_array() check for multiplication overflow.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 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;
-- 
2.30.2


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WARNING: multiple messages have this Message-ID (diff)
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>,
	coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>,
	Mike Leach <mike.leach@linaro.org>, Leo Yan <leo.yan@linaro.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 1/1] coresight: core: Switch to krealloc_array()
Date: Thu, 20 May 2021 16:50:41 +0300	[thread overview]
Message-ID: <20210520135041.56163-1-andriy.shevchenko@linux.intel.com> (raw)

Let the krealloc_array() check for multiplication overflow.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 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;
-- 
2.30.2


             reply	other threads:[~2021-05-20 13:52 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-20 13:50 Andy Shevchenko [this message]
2021-05-20 13:50 ` [PATCH v1 1/1] coresight: core: Switch to krealloc_array() Andy Shevchenko
2021-05-21 16:10 ` Mathieu Poirier
2021-05-21 16:10   ` Mathieu Poirier

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