On 5/30/23 11:00 AM, Stefano Garzarella wrote: > I think it is partially related to commit 6e890c5d5021 ("vhost: use > vhost_tasks for worker threads") and commit 1a5f8090c6de ("vhost: move > worker thread fields to new struct"). Maybe that commits just > highlighted the issue and it was already existing. See my mail about the crash. Agree with your analysis about worker->vtsk not being set yet. It's a bug from my commit where I should have not set it so early or I should be checking for if (dev->worker && worker->vtsk) instead of if (dev->worker) One question about the behavior before my commit though and what we want in the end going forward. Before that patch we would just drop work if vhost_work_queue was called before VHOST_SET_OWNER. Was that correct/expected? The call to vhost_work_queue in vhost_vsock_start was only seeing the works queued after VHOST_SET_OWNER. Did you want works queued before that?