Mike Christie 3e11c6eb6a
vhost: create worker at end of vhost_dev_set_owner ...
vsock can start queueing work after VHOST_VSOCK_SET_GUEST_CID, so
after we have called vhost_worker_create it can be calling
vhost_work_queue and trying to access the vhost worker/task. If
vhost_dev_alloc_iovecs fails, then vhost_worker_free could free
the worker/task from under vsock.
This moves vhost_worker_create to the end of vhost_dev_set_owner
where we know we can no longer fail in that path. If it fails
after the VHOST_SET_OWNER and userspace closes the device, then
the normal vsock release handling will do the right thing.
Signed-off-by: Mike Christie <michael.christie@oracle.com >
Message-Id: <20230626232307.97930-2-michael.christie@oracle.com >
Signed-off-by: Michael S. Tsirkin <mst@redhat.com >
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