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qemu: avoid corrupting guest info struct on host device PCI hot add

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The device path doesn't make use of guestAddr, so the memcpy corrupts
the guest info struct.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alex Williamson 2010-05-24 13:33:27 -04:00 committed by Eric Blake
parent ebb0c19c48
commit ddfd4dba95
1 changed files with 11 additions and 8 deletions
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19
src/qemu/qemu_driver.c
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@ -7653,7 +7653,6 @@ static int qemudDomainAttachHostPciDevice(struct qemud_driver *driver,
qemuDomainObjPrivatePtr priv = vm->privateData; qemuDomainObjPrivatePtr priv = vm->privateData;
pciDevice *pci; pciDevice *pci;
int ret; int ret;
virDomainDevicePCIAddress guestAddr;
char *devstr = NULL; char *devstr = NULL;
if (VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs+1) < 0) { if (VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs+1) < 0) {
@ -7688,20 +7687,24 @@ static int qemudDomainAttachHostPciDevice(struct qemud_driver *driver,
if (!(devstr = qemuBuildPCIHostdevDevStr(hostdev))) if (!(devstr = qemuBuildPCIHostdevDevStr(hostdev)))
goto error; goto error;
}
qemuDomainObjEnterMonitorWithDriver(driver, vm); qemuDomainObjEnterMonitorWithDriver(driver, vm);
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)
ret = qemuMonitorAddDevice(priv->mon, devstr); ret = qemuMonitorAddDevice(priv->mon, devstr);
else qemuDomainObjExitMonitorWithDriver(driver, vm);
} else {
virDomainDevicePCIAddress guestAddr;
qemuDomainObjEnterMonitorWithDriver(driver, vm);
ret = qemuMonitorAddPCIHostDevice(priv->mon, ret = qemuMonitorAddPCIHostDevice(priv->mon,
&hostdev->source.subsys.u.pci, &hostdev->source.subsys.u.pci,
&guestAddr); &guestAddr);
qemuDomainObjExitMonitorWithDriver(driver, vm); qemuDomainObjExitMonitorWithDriver(driver, vm);
hostdev->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
memcpy(&hostdev->info.addr.pci, &guestAddr, sizeof(guestAddr));
}
if (ret < 0) if (ret < 0)
goto error; goto error;
hostdev->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
memcpy(&hostdev->info.addr.pci, &guestAddr, sizeof(guestAddr));
vm->def->hostdevs[vm->def->nhostdevs++] = hostdev; vm->def->hostdevs[vm->def->nhostdevs++] = hostdev;