Hi,

I would use net/virtio prefix instead, as IIUC, the impacted code can
also be called by Virtio PMD.

On 05/24/2018 03:04 PM, zhiyong.y...@intel.com wrote:
For virtio-user server mode, One use case comes across segmentation fault.
step 1: Launch vhost side as client firstly.
step 2: launch virtio-user side as server.

The cause is: after registering virtio_interrupt_handler into
eal-intr-thread, two threads (main thread and eal-intr-thread) have
sync issues, so add rxvq pointer checking in function virtio_notify_peers
to decide if the code can continue.

Fixes: bd8f50a45d0f ("net/virtio-user: support server mode")
Cc: sta...@dpdk.org
Cc: maxime.coque...@redhat.com
Cc: tiwei....@intel.com
Cc: lei.a....@intel.com
Cc: ferruh.yi...@intel.com

Signed-off-by: Zhiyong Yang <zhiyong.y...@intel.com>
---
  drivers/net/virtio/virtio_ethdev.c | 3 +++
  1 file changed, 3 insertions(+)

diff --git a/drivers/net/virtio/virtio_ethdev.c 
b/drivers/net/virtio/virtio_ethdev.c
index 5833dad73..df50a571a 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1245,6 +1245,9 @@ virtio_notify_peers(struct rte_eth_dev *dev)
                return;
rxvq = dev->data->rx_queues[0];
+       if (!rxvq)
+               return;
+

Other than that, it looks good to me:
Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com>

Thanks,
Maxime

        rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
                        (struct ether_addr *)hw->mac_addr);
        if (rarp_mbuf == NULL) {

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