[3.13.y-ckt stable] Patch "drivers/input/evdev.c: don't kfree() a vmalloc address" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    drivers/input/evdev.c: don't kfree() a vmalloc address

to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11-ckt13.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From e925c37d4767d44cc10fa491f53e61c6d13dfca4 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm at linux-foundation.org>
Date: Tue, 2 Dec 2014 15:59:31 -0800
Subject: drivers/input/evdev.c: don't kfree() a vmalloc address

commit 92788ac1eb06e69a822de45e2a8a63fa45eb5be2 upstream.

If kzalloc() failed and then evdev_open_device() fails, evdev_open()
will pass a vmalloc'ed pointer to kfree.

This might fix https://bugzilla.kernel.org/show_bug.cgi?id=88401, where
there was a crash in kfree().

Reported-by: Christian Casteyde <casteyde.christian at free.fr>
Belatedly-Acked-by: Dmitry Torokhov <dmitry.torokhov at gmail.com>
Cc: Henrik Rydberg <rydberg at euromail.se>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/input/evdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index a06e125..c33c8ff 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -422,7 +422,7 @@ static int evdev_open(struct inode *inode, struct file *file)

  err_free_client:
 	evdev_detach_client(evdev, client);
-	kfree(client);
+	kvfree(client);
 	return error;
 }

--
1.9.1