| From | Ben Hutchings <> | Date | Tue, 24 Nov 2015 22:33:59 +0000 | Subject | [PATCH 3.2 08/52] devres: fix a for loop bounds check |
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3.2.74-rc1 review patch. If anyone has any objections, please let me know.
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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: Ben Hutchings <ben@decadent.org.uk> --- lib/devres.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/lib/devres.c +++ b/lib/devres.c @@ -339,7 +339,7 @@ void pcim_iounmap_regions(struct pci_dev if (!iomap) return; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { + for (i = 0; i < PCIM_IOMAP_MAX; i++) { if (!(mask & (1 << i))) continue;
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