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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: linux-acpi@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>,
	Hanjun Guo <guohanjun@huawei.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Len Brown <lenb@kernel.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 1/1] ACPI/IORT: Switch to use kmemdup_array()
Date: Thu,  6 Jun 2024 19:50:05 +0300
Message-ID: <20240606165005.3031490-1-andriy.shevchenko@linux.intel.com>
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Let the kememdup_array() take care about multiplication and possible
overflows.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/acpi/arm64/iort.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index c0b1c2c19444..e596dff20f1e 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -822,7 +822,7 @@ static struct iommu_iort_rmr_data *iort_rmr_alloc(
 		return NULL;
 
 	/* Create a copy of SIDs array to associate with this rmr_data */
-	sids_copy = kmemdup(sids, num_sids * sizeof(*sids), GFP_KERNEL);
+	sids_copy = kmemdup_array(sids, num_sids, sizeof(*sids), GFP_KERNEL);
 	if (!sids_copy) {
 		kfree(rmr_data);
 		return NULL;
-- 
2.43.0.rc1.1336.g36b5255a03ac