diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 597969d..e967901 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1473,7 +1473,7 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
 	pm.show_pfn = file_ns_capable(file, &init_user_ns, CAP_SYS_ADMIN);
 
 	pm.len = (PAGEMAP_WALK_SIZE >> PAGE_SHIFT);
-	pm.buffer = kmalloc(pm.len * PM_ENTRY_BYTES, GFP_KERNEL);
+	pm.buffer = kmalloc_array(pm.len, PM_ENTRY_BYTES, GFP_KERNEL);
 	ret = -ENOMEM;
 	if (!pm.buffer)
 		goto out_mm;