On Thu, Aug 15, 2019 at 09:14:52AM +0000, He Peng wrote: > Hi, > > > Would you please provide a list of impacted APIs, thus we can check if our > code has further issues. b.t.w, we are now using dpdk 18.11.
I'm looking into this issue. The API of the builtin backend is supposed to be protected like enqueue/dequeue. So e.g. rte_vhost_enable_guest_notification should also be protected. I'll keep you in the CC list of the fix patch. Thanks, Tiwei > > > Thanks. > > 2019年8月14日 下午11:09，Tiwei Bie <tiwei....@intel.com> 写道： > > > On Wed, Aug 14, 2019 at 03:31:09AM +0000, He Peng wrote: > > Hi， > > > We found that *rte_vhost_rx_queue_count* is not protected by vq->access_lock, > and the access to vq->avail->idx is not thread-safe, since at the same time, > the vq->avail might be > > > set by *vring_invalidate* when some vhost-user messages arrived, such as > VRING_SET_ADDRESS, > VRING_SET_MEM_TABLE, etc. > > You are right. And other similar APIs also need to be protected. > Thanks for reporting this! > > Thanks, > Tiwei > > > > > > > > Thanks. > > > > > > >