openkylin
/
qemu
mirror of https://gitee.com/openkylin/qemu.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

pci: Assert irqnum is between 0 and bus->nirqs in pci_bus_change_irq_level 

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>
Message-Id: <20201024203900.3619498-3-f4bug@amsat.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Mark Cave-Ayland 2020-10-24 22:39:00 +02:00 committed by Michael S. Tsirkin
parent b06fe3e703
commit 459ca8bfa4
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/pci/pci.c
View File

@ -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);
}