From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 17 Aug 2012 23:49:09 +0000 (-0400)
Subject: vfio: don't dereference after kfree...
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=934ad4c235f87dcb9206abdfa22922358999afab;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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 9591e2b509d7..0b025d58de81 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)