a55dd0838d
The vm will trigger a disk sweep operation after plugging a controller who's io type is iothread. If attach a scsi disk immediately, the sg_inqury request in vm will trigger the assert in virtio_scsi_ctx_check(), which is called by virtio_scsi_handle_cmd_req_prepare(). Add judgment in virtio_scsi_handle_cmd_req_prepare() and return IO Error directly if the device has not been initialized. Signed-off-by: Jinhua Cao <caojinhua1@huawei.com>