From: "Steven Rostedt (Google)" <rostedt@goodmis.org>

Before a timer is freed, del_timer_shutdown() must be called.

Link: https://lore.kernel.org/all/20220407161745.7d6754b3@gandalf.local.home/

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
 drivers/char/hangcheck-timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/hangcheck-timer.c b/drivers/char/hangcheck-timer.c
index 4181bcc1c796..0b7e8758746c 100644
--- a/drivers/char/hangcheck-timer.c
+++ b/drivers/char/hangcheck-timer.c
@@ -167,7 +167,7 @@ static int __init hangcheck_init(void)
 
 static void __exit hangcheck_exit(void)
 {
-	del_timer_sync(&hangcheck_ticktock);
+	del_timer_shutdown(&hangcheck_ticktock);
         printk("Hangcheck: Stopped hangcheck timer.\n");
 }
 
-- 
2.35.1