diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 007f0110a628e86e100d1f3e032573c6449f75db..ac41db3c5dd10b3e37011ffc004254fd0d14d55b 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -658,6 +658,11 @@ static void __iomem *msix_map_region(struct pci_dev *dev, unsigned nr_entries) pci_read_config_dword(dev, dev->msix_cap + PCI_MSIX_TABLE, &table_offset); bir = (u8)(table_offset & PCI_MSIX_TABLE_BIR); + if (bir >= DEVICE_COUNT_RESOURCE) { + dev_err(&dev->dev, "MSI-X Table BIR is out of range !\n"); + return NULL; + } + flags = pci_resource_flags(dev, bir); if (!flags || (flags & IORESOURCE_UNSET)) return NULL;