From 2264750483107c45877d29813c497b4c87f64cb6 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 19 Feb 2015 17:05:46 +0100 Subject: scsi: give device a parent before setting properties This mimics what is done in qdev_device_add, and lets the device be freed in case something goes wrong. Otherwise, object_unparent returns immediately without freeing the device, which is on the other hand left in the parent bus's list of children. scsi_bus_legacy_handle_cmdline then returns an error, and the HBA is destroyed as well with object_unparent. But the lingering device that was not removed in scsi_bus_legacy_add_drive cannot be removed now either, and bus_unparent gets stuck in an infinite loop trying to empty the list of children. The right fix of course would be to assert in bus_add_child that the device already has a bus, and remove the "safety net" that adds the drive to the QOM tree in device_set_realized. I am not yet sure whether that would entail changing all callers to qdev_create (as well as isa_create and usb_create and the corresponding _try_create versions). Reported-by: Markus Armbruster Tested-by: Markus Armbruster Signed-off-by: Paolo Bonzini --- hw/scsi/scsi-bus.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'hw') diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c index db39ae0e23..dca9576828 100644 --- a/hw/scsi/scsi-bus.c +++ b/hw/scsi/scsi-bus.c @@ -221,11 +221,16 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk, const char *serial, Error **errp) { const char *driver; + char *name; DeviceState *dev; Error *err = NULL; driver = blk_is_sg(blk) ? "scsi-generic" : "scsi-disk"; dev = qdev_create(&bus->qbus, driver); + name = g_strdup_printf("legacy[%d]", unit); + object_property_add_child(OBJECT(bus), name, OBJECT(dev), NULL); + g_free(name); + qdev_prop_set_uint32(dev, "scsi-id", unit); if (bootindex >= 0) { object_property_set_int(OBJECT(dev), bootindex, "bootindex", -- cgit v1.2.3