Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=33143ea1a34d12699e6aa222ba124498abcfe4d1
Commit: 33143ea1a34d12699e6aa222ba124498abcfe4d1
Parent: 9f7a60d6e47a70957e5f6676cfe8c83956b08aa6
Author: Dmitry Torokhov <[EMAIL PROTECTED]>
AuthorDate: Fri Jun 29 01:06:35 2007 -0400
Committer: Dmitry Torokhov <[EMAIL PROTECTED]>
CommitDate: Fri Jun 29 01:06:35 2007 -0400
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 <[EMAIL PROTECTED]>
Signed-off-by: Dmitry Torokhov <[EMAIL PROTECTED]>
---
drivers/input/serio/serio.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
index 5895202..a8f3bc1 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)
-
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