hw/display/qxl: Assert memory slot fits in preallocated MemoryRegion

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20221128202741.4945-6-philmd@linaro.org>
qemu · Nov 29, 2022 · d8f82b5 · d8f82b5
1 parent dcc6cef
commit d8f82b5
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/hw/display/qxl.c b/hw/display/qxl.c
@@ -1384,6 +1384,7 @@ static int qxl_add_memslot(PCIQXLDevice *d, uint32_t slot_id, uint64_t delta,
         qxl_set_guest_bug(d, "%s: pci_region = %d", __func__, pci_region);
         return 1;
     }
+    assert(guest_end - pci_start <= memory_region_size(mr));
 
     virt_start = (intptr_t)memory_region_get_ram_ptr(mr);
     memslot.slot_id = slot_id;