From patchwork Tue Aug 24 06:48:41 2010
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Subject: [2/3] pci init: fail qemu if devfn exceeding the max devices number
 supported on bus
Date: Mon, 23 Aug 2010 20:48:41 -0000
From: Ken CC <ken.ccao@gmail.com>
X-Patchwork-Id: 62555
Message-Id: <20100824064841.GA11495@kt>
To: kvm@vger.kernel.org
Cc: yamahata@valinux.co.jp, qemu-devel@nongnu.org

assert(devfn < PCIBUS_MAX_DEVICES)

Signed-off-by: Ken CC <ken.ccao@gmail.com>

---
hw/pci.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/hw/pci.c b/hw/pci.c
index 02019a1..1e804da 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -747,6 +747,7 @@ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
                                          PCIConfigWriteFunc *config_write,
                                          bool is_bridge)
 {
+    assert(devfn < PCIBUS_MAX_DEVICES);
     if (devfn < 0) {
         for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices);
             devfn += PCI_FUNC_MAX) {