[PATCH 3.19.y-ckt 124/164] devres: fix a for loop bounds check

From	Kamal Mostafa <kamal@canonical.com>
Newsgroups	linux.kernel
Subject	[PATCH 3.19.y-ckt 124/164] devres: fix a for loop bounds check
Date	2015-12-02 18:30 +0100
Message-ID	<qBjo7-1O1-43@gated-at.bofh.it> (permalink)
References	<qBj4K-1FO-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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3.19.8-ckt11 -stable review patch.  If anyone has any objections, please let me know.

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

From: Dan Carpenter <dan.carpenter@oracle.com>

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@oracle.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 lib/devres.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/devres.c b/lib/devres.c
index 0f1dd2e..dfdd1a4 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -395,7 +395,7 @@ 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;
 
-- 
1.9.1

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[PATCH 3.19.y-ckt 124/164] devres: fix a for loop bounds check Kamal Mostafa <kamal@canonical.com> - 2015-12-02 18:30 +0100

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