[v2] sched/topology: change kzalloc to kcalloc

Commit Message

Ethan Carter Edwards Jan. 19, 2025, 6:23 p.m. UTC

We are replacing any instances of kzalloc(size * count, ...) with
kcalloc(count, size, ...) due to risk of overflow [1].

[1] https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments
Link: https://github.com/KSPP/linux/issues/162

Signed-off-by: Ethan Carter Edwards <[e-mail]>
---
 V2: fix email client formatting.
 kernel/sched/topology.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index 9748a4c8d668..17eb12819563 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -1920,7 +1920,7 @@  void sched_init_numa(int offline_node)
 	 */
 	sched_domains_numa_levels = 0;
 
-	masks = kzalloc(sizeof(void *) * nr_levels, GFP_KERNEL);
+	masks = kcalloc(nr_levels, sizeof(void *), GFP_KERNEL);
 	if (!masks)
 		return;
 
@@ -1929,7 +1929,7 @@  void sched_init_numa(int offline_node)
 	 * CPUs of nodes that are that many hops away from us.
 	 */
 	for (i = 0; i < nr_levels; i++) {
-		masks[i] = kzalloc(nr_node_ids * sizeof(void *), GFP_KERNEL);
+		masks[i] = kcalloc(nr_node_ids, sizeof(void *), GFP_KERNEL);
 		if (!masks[i])
 			return;