On Thu, May 28, 2015 at 10:03:14AM +0200, Thibaut Collet wrote:
> For netdev backend with no receive callback, packets must not be enqueued. 
> When
> VM stops the enqueued packets are purged (see fixes ca77d85e1dbf). That 
> causes a
> qemu segfault due to a call of a NULL pointer function.

virtio-net NIC <-> vhost-user should bypass the QEMU net subsystem since
rx/tx virtqueues are handled outside the QEMU process.  Who is enqueuing
packets on vhost-user's incoming_queue?

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