[Qemu-devel] [PATCH] hw/pci: fixed crash when using rombar=0 for hotplugged devices

[Marcel Apfelbaum <marcel.a@redhat.com>]

ROM images must be loaded at startup. Usage of rombar=0 after that
is not allowed, but should not crash QEMU.

Check that the device is not hotplugged before trying to
insert the rom file.

Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
---
 hw/pci/pci.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 6ce75aa..3907c90 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -1776,7 +1776,12 @@ static int pci_qdev_init(DeviceState *qdev)
         pci_dev->romfile = g_strdup(pc->romfile);
         is_default_rom = true;
     }
-    pci_add_option_rom(pci_dev, is_default_rom);
+
+    rc = pci_add_option_rom(pci_dev, is_default_rom);
+    if (rc != 0) {
+        pci_unregister_device(DEVICE(pci_dev));
+        return rc;
+    }
 
     return 0;
 }
@@ -1940,6 +1945,10 @@ static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom)
         if (class == 0x0300) {
             rom_add_vga(pdev->romfile);
         } else {
+            if (DEVICE(pdev)->hotplugged) {
+                error_report("PCI: rombar can't be 0 for hotplugged devices!");
+                return -1;
+            }
             rom_add_option(pdev->romfile, -1);
         }
         return 0;
-- 
1.8.3.1