From: Sasha Levin <redacted>
Date: Fri, 18 Nov 2011 11:19:42 +0200

Device lock should be held when releasing a device, and specifically
when calling vhost_dev_cleanup(). Otherwise, RCU complains about it:

 ...

Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: kvm@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Cc: netdev@vger.kernel.org
Signed-off-by: Sasha Levin <redacted>

Michael et al., are you guys going to gather this fix or should I
apply it directly to thet net tree?

Thanks.