Since commit 2f7bd829db "qdev: Fix device_add bus assumptions" it's possible to device_add bus-less device, but if such device is unplugged it will dereference NULL parent_bus in qdev_unplug().
Fix it by taking in account that parent_bus might be NULL and skipping bus check. Signed-off-by: Igor Mammedov <imamm...@redhat.com> --- hw/core/qdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/core/qdev.c b/hw/core/qdev.c index ab1d8f5..069ac90 100644 --- a/hw/core/qdev.c +++ b/hw/core/qdev.c @@ -208,7 +208,7 @@ void qdev_unplug(DeviceState *dev, Error **errp) { DeviceClass *dc = DEVICE_GET_CLASS(dev); - if (!dev->parent_bus->allow_hotplug) { + if (dev->parent_bus && !dev->parent_bus->allow_hotplug) { error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); return; } -- 1.8.2.1