From 1441edd129e36cf5d1a9c2abff39619d5d90e1a8 Mon Sep 17 00:00:00 2001 From: Kaushlendra Kumar Date: Thu, 11 Sep 2025 08:48:11 +0530 Subject: [PATCH] refperf: Set reader_tasks to NULL after kfree() Set reader_tasks to NULL after kfree() in ref_scale_cleanup() to improve debugging experience with kernel debugging tools. This follows the common pattern of NULLing pointers after freeing to avoid dangling pointer issues during debugging sessions. Setting pointers to NULL after freeing helps debugging tools like kdgb,drgn, and other kernel debuggers by providing clear indication that the memory has been freed and the pointer is no longer valid. Suggested-by: Paul E. McKenney Signed-off-by: Kaushlendra Kumar Signed-off-by: Paul E. McKenney --- kernel/rcu/refscale.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c index 7f3d23762ef7c..19841704d8f57 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -1133,6 +1133,7 @@ ref_scale_cleanup(void) reader_tasks[i].task); } kfree(reader_tasks); + reader_tasks = NULL; torture_stop_kthread("main_task", main_task); -- 2.47.3