linux-kernel - [PATCH 3.17 03/47] drivers/input/evdev.c: dont kfree() a vmalloc address

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Message-Id: <20141214201818.654240503@linuxfoundation.org>
Date:	Sun, 14 Dec 2014 12:20:38 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Christian Casteyde <casteyde.christian@...e.fr>,
	Henrik Rydberg <rydberg@...omail.se>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 3.17 03/47] drivers/input/evdev.c: dont kfree() a vmalloc address

3.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrew Morton <akpm@...ux-foundation.org>

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@...e.fr>
Belatedly-Acked-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: Henrik Rydberg <rydberg@...omail.se>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/input/evdev.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -421,7 +421,7 @@ static int evdev_open(struct inode *inod
 
  err_free_client:
 	evdev_detach_client(evdev, client);
-	kfree(client);
+	kvfree(client);
 	return error;
 }
 


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