linux-kernel - [patch] vfio: make an array larger

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Message-ID: <20151104132624.GC20966@mwanda>
Date:	Wed, 4 Nov 2015 16:26:24 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Alex Williamson <alex.williamson@...hat.com>
Cc:	Frank Blaschka <frank.blaschka@...ibm.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] vfio: make an array larger

Smatch complains about a possible out of bounds error:

	drivers/vfio/pci/vfio_pci_config.c:1241 vfio_cap_init()
	error: buffer overflow 'pci_cap_length' 20 <= 20

Fix this by making the array larger.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index ff75ca3..001d48a 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -46,7 +46,7 @@
  *   0: Removed from the user visible capability list
  *   FF: Variable length
  */
-static u8 pci_cap_length[] = {
+static u8 pci_cap_length[PCI_CAP_ID_MAX + 1] = {
 	[PCI_CAP_ID_BASIC]	= PCI_STD_HEADER_SIZEOF, /* pci config header */
 	[PCI_CAP_ID_PM]		= PCI_PM_SIZEOF,
 	[PCI_CAP_ID_AGP]	= PCI_AGP_SIZEOF,
--
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