From 33143ea1a34d12699e6aa222ba124498abcfe4d1 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Fri, 29 Jun 2007 01:06:35 -0400 Subject: [PATCH] Input: serio - take drv_mutex in serio_cleanup() We need to take serio->drv_mutex in serio_cleanup() to prevent the function from being called while driver is in the middle of attaching to a serio port. Such situation can happen with i8042 and atkbd drivers if user rapidly presses Ctrl-Alt-Del during system startup, and leads to kernel oops. Reported-by: Dave Young Signed-off-by: Dmitry Torokhov --- drivers/input/serio/serio.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index 5895202b97..a8f3bc1dff 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -769,8 +769,10 @@ static int serio_driver_remove(struct device *dev) static void serio_cleanup(struct serio *serio) { + mutex_lock(&serio->drv_mutex); if (serio->drv && serio->drv->cleanup) serio->drv->cleanup(serio); + mutex_unlock(&serio->drv_mutex); } static void serio_shutdown(struct device *dev) -- 2.39.5