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msix: assert that accesses are within bounds 

This makes the testcase from the next patch fail.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-12-01 09:42:23 -05:00
parent c9ca89a907
commit 58cf0f86d4
1 changed files with 3 additions and 0 deletions
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3
hw/pci/msix.c
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@ -179,6 +179,7 @@ static uint64_t msix_table_mmio_read(void *opaque, hwaddr addr,
{
PCIDevice *dev = opaque;
assert(addr + size <= dev->msix_entries_nr * PCI_MSIX_ENTRY_SIZE);
return pci_get_long(dev->msix_table + addr);
}
@ -189,6 +190,8 @@ static void msix_table_mmio_write(void *opaque, hwaddr addr,
int vector = addr / PCI_MSIX_ENTRY_SIZE;
bool was_masked;
assert(addr + size <= dev->msix_entries_nr * PCI_MSIX_ENTRY_SIZE);
was_masked = msix_is_masked(dev, vector);
pci_set_long(dev->msix_table + addr, val);
msix_handle_mask_update(dev, vector, was_masked);