[3.16.y-ckt stable] Patch "devres: fix a for loop bounds check" has been added to staging queue

[Luis Henriques]

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

    devres: fix a for loop bounds check

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt21.

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

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 7cd4d0251fb7bfb2015e79634c2607e9d94efbdc Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter at oracle.com>
Date: Mon, 21 Sep 2015 19:21:51 +0300
Subject: devres: fix a for loop bounds check

commit 1f35d04a02a652f14566f875aef3a6f2af4cb77b upstream.

The iomap[] array has PCIM_IOMAP_MAX (6) elements and not
DEVICE_COUNT_RESOURCE (16).  This bug was found using a static checker.
It may be that the "if (!(mask & (1 << i)))" check means we never
actually go past the end of the array in real life.

Fixes: ec04b075843d ('iomap: implement pcim_iounmap_regions()')
Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
Acked-by: Tejun Heo <tj at kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 lib/devres.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/devres.c b/lib/devres.c
index f562bf6ff71d..eaa04de41e42 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -425,7 +425,7 @@ void pcim_iounmap_regions(struct pci_dev *pdev, int mask)
 	if (!iomap)
 		return;

-	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+	for (i = 0; i < PCIM_IOMAP_MAX; i++) {
 		if (!(mask & (1 << i)))
 			continue;