This is a note to let you know that I've just added the patch titled
watchdog: ts72xx_wdt: locking bug in ioctl
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
watchdog-ts72xx_wdt-locking-bug-in-ioctl.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8612ed0d97abcf1c016d34755b7cf2060de71963 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Fri, 23 Aug 2013 11:40:59 +0300
Subject: watchdog: ts72xx_wdt: locking bug in ioctl
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit 8612ed0d97abcf1c016d34755b7cf2060de71963 upstream.
Calling the WDIOC_GETSTATUS & WDIOC_GETBOOTSTATUS and twice will cause a
interruptible deadlock.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Wim Van Sebroeck <wim@xxxxxxxxx>
Cc: Jonghwan Choi <jhbird.choi@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/watchdog/ts72xx_wdt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/watchdog/ts72xx_wdt.c
+++ b/drivers/watchdog/ts72xx_wdt.c
@@ -310,7 +310,8 @@ static long ts72xx_wdt_ioctl(struct file
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
+ error = put_user(0, p);
+ break;
case WDIOC_KEEPALIVE:
ts72xx_wdt_kick(wdt);
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-3.4/watchdog-ts72xx_wdt-locking-bug-in-ioctl.patch
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