From: Andy Shevchenko Date: Thu, 6 Jun 2024 16:50:05 +0000 (+0300) Subject: ACPI/IORT: Switch to use kmemdup_array() X-Git-Tag: v6.12-rc1~221^2~8^2~2 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=9cd8062b38e61f11054f13b3c98695c7b1d73b11;p=linux-block.git ACPI/IORT: Switch to use kmemdup_array() Let the kememdup_array() take care about multiplication and possible overflows. Signed-off-by: Andy Shevchenko Acked-by: Hanjun Guo Link: https://lore.kernel.org/r/20240606165005.3031490-1-andriy.shevchenko@linux.intel.com Signed-off-by: Will Deacon --- diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 1b39e9ae7ac1..034d303c3df1 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;