Re: [PATCH] net/vhost: fix segfault when creating vdev dynamically

["Tan, Jianfeng" <jianfeng.tan@intel.com>]

On 3/27/2018 5:02 PM, Chen, Junjie J wrote:
> Hi Jianfeng
>
>> On 3/28/2018 12:05 AM, Junjie Chen wrote:
>>> when creating vdev dynamically, vhost pmd driver start directly
>>> without checking TX/RX queues ready or not, and thus cause
>>> segmentation fault when vhost library accessing queues. This patch add
>>> flag to check whether queues setup or not, and add driver start call
>>> into dev_start to allow user start it after setting up queue.
>> The issue is clear now. But this patch just puts the situation before below fix:
>> "it doesn't create the actual datagram socket until you call .dev_start()."
> No, if the queue exist, the datagram socket still get created in vhost_create API, since the vhost_driver_register still exist in vhost_create.

The queue can never be created, as it's still not probed.