From 934ad4c235f87dcb9206abdfa22922358999afab Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 17 Aug 2012 19:49:09 -0400
Subject: vfio: don't dereference after kfree...

Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 9591e2b..0b025d5 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -416,8 +416,9 @@ static void vfio_device_release(struct kref *kref)
 /* Device reference always implies a group reference */
 static void vfio_device_put(struct vfio_device *device)
 {
+	struct vfio_group *group = device->group;
 	kref_put(&device->kref, vfio_device_release);
-	vfio_group_put(device->group);
+	vfio_group_put(group);
 }
 
 static void vfio_device_get(struct vfio_device *device)
-- 
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