diff --git a/kernel/fork.c b/kernel/fork.c
index d75a528f7b219..57d624f05182e 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -254,6 +254,7 @@ static unsigned long *alloc_thread_stack_node(struct task_struct *tsk, int node)
 	 * so cache the vm_struct.
 	 */
 	if (stack) {
+		stack = kasan_reset_tag(stack);
 		tsk->stack_vm_area = find_vm_area(stack);
 		tsk->stack = stack;
 	}