qemu: avoid leaking uninit data from hotplug to dumpxml

Detected by Coverity.  The fix in 2c27dfa didn't catch all bad
instances of memcpy().  Thankfully, on further analysis, all of
the problematic uses are only triggered by old qemu that lacks
-device.

* src/qemu/qemu_hotplug.c (qemuDomainAttachPciDiskDevice)
(qemuDomainAttachNetDevice, qemuDomainAttachHostPciDevice): Init
all fields since monitor only populates some of them.

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 037f4aa03c47fa2cb5e05ec797710a8535ee4b79..06b21c33fbe64ab975c3fe1ea8d972728edc0d92 100644 (file)
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -246,7 +246,7 @@ int qemuDomainAttachPciDiskDevice(struct qemud_driver *driver,
             }
         }
     } else {
-        virDomainDevicePCIAddress guestAddr;
+        virDomainDevicePCIAddress guestAddr = disk->info.addr.pci;
         ret = qemuMonitorAddPCIDisk(priv->mon,
                                     disk->src,
                                     type,
@@ -775,6 +775,7 @@ int qemuDomainAttachNetDevice(virConnectPtr conn,
             goto try_remove;
         }
     } else {
+        guestAddr = net->info.addr.pci;
         if (qemuMonitorAddPCINetwork(priv->mon, nicstr,
                                      &guestAddr) < 0) {
             qemuDomainObjExitMonitorWithDriver(driver, vm);
@@ -929,7 +930,7 @@ int qemuDomainAttachHostPciDevice(struct qemud_driver *driver,
                                          configfd, configfd_name);
         qemuDomainObjExitMonitorWithDriver(driver, vm);
     } else {
-        virDomainDevicePCIAddress guestAddr;
+        virDomainDevicePCIAddress guestAddr = hostdev->info.addr.pci;
 
         qemuDomainObjEnterMonitorWithDriver(driver, vm);
         ret = qemuMonitorAddPCIHostDevice(priv->mon,