[PATCH v1 3/3] soundwire: use krealloc_array to prevent integer overflow

[Baoli.Zhang]

Replace the use of krealloc() with krealloc_array() in
sdw_add_element_group_count to mitigate the risk of integer overflow during
memory allocation size calculation.

Suggested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Baoli.Zhang <baoli.zhang@xxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/soundwire/generic_bandwidth_allocation.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/soundwire/generic_bandwidth_allocation.c b/drivers/soundwire/generic_bandwidth_allocation.c
index cd9ccbaf0e46f..3575d69ce1c50 100644
--- a/drivers/soundwire/generic_bandwidth_allocation.c
+++ b/drivers/soundwire/generic_bandwidth_allocation.c
@@ -308,17 +308,15 @@ static int sdw_add_element_group_count(struct sdw_group *group,
 		unsigned int *rates;
 		unsigned int *lanes;
 
-		rates = krealloc(group->rates,
-				 sizeof(int) * (group->max_size + 1),
-				 GFP_KERNEL);
+		rates = krealloc_array(group->rates, group->max_size + 1,
+				       sizeof(*group->rates), GFP_KERNEL);
 		if (!rates)
 			return -ENOMEM;
 
 		group->rates = rates;
 
-		lanes = krealloc(group->lanes,
-				 sizeof(int) * (group->max_size + 1),
-				 GFP_KERNEL);
+		lanes = krealloc_array(group->lanes, group->max_size + 1,
+				       sizeof(*group->lanes), GFP_KERNEL);
 		if (!lanes)
 			return -ENOMEM;
 
-- 
2.43.0