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[PATCH v2 2/2] pci: Assert irqnum is between 0 and bus->nirqs in pci_bus
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From: |
Philippe Mathieu-Daudé |
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Subject: |
[PATCH v2 2/2] pci: Assert irqnum is between 0 and bus->nirqs in pci_bus_change_irq_level |
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Date: |
Sat, 24 Oct 2020 22:39:00 +0200 |
From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
These assertions similar to those in the adjacent pci_bus_get_irq_level()
function ensure that irqnum lies within the valid PCI bus IRQ range.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20201011082022.3016-1-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
hw/pci/pci.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 081ddcadd15..dc4019865be 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -250,6 +250,8 @@ static inline void pci_set_irq_state(PCIDevice *d, int
irq_num, int level)
static void pci_bus_change_irq_level(PCIBus *bus, int irq_num, int change)
{
+ assert(irq_num >= 0);
+ assert(irq_num < bus->nirq);
bus->irq_count[irq_num] += change;
bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
}
--
2.26.2