mm: use vmalloc_array and vcalloc for array allocations
Instead of using array_size or just a multiply, use a function that
takes care of both the multiplication and the overflow checks.
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/mm/percpu-stats.c b/mm/percpu-stats.c
index c6bd092..dd3590d 100644
--- a/mm/percpu-stats.c
+++ b/mm/percpu-stats.c
@@ -144,7 +144,7 @@ static int percpu_stats_show(struct seq_file *m, void *v)
spin_unlock_irq(&pcpu_lock);
/* there can be at most this many free and allocated fragments */
- buffer = vmalloc(array_size(sizeof(int), (2 * max_nr_alloc + 1)));
+ buffer = vmalloc_array(2 * max_nr_alloc + 1, sizeof(int));
if (!buffer)
return -ENOMEM;
