[dpdk-dev] [PATCH v3 1/4] net/virtio: fix add pointer checking
Maxime Coquelin
maxime.coquelin at redhat.com
Thu Mar 29 14:01:42 CEST 2018
On 03/21/2018 04:03 AM, zhiyong.yang at intel.com wrote:
> It is necessary to add pointer checking because in some case the
> code will cause crash. For example, the code goes here before
> memory allocation of rxvq is finished.
>
> Fixes: 7365504f77e3("net/virtio: support guest announce")
> Cc: stable at dpdk.org
> Signed-off-by: Zhiyong Yang <zhiyong.yang at intel.com>
> ---
> drivers/net/virtio/virtio_ethdev.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
> index 884f74ad0..f377d8aa3 100644
> --- a/drivers/net/virtio/virtio_ethdev.c
> +++ b/drivers/net/virtio/virtio_ethdev.c
> @@ -1273,9 +1273,13 @@ static void
> virtio_notify_peers(struct rte_eth_dev *dev)
> {
> struct virtio_hw *hw = dev->data->dev_private;
> - struct virtnet_rx *rxvq = dev->data->rx_queues[0];
> + struct virtnet_rx *rxvq;
> struct rte_mbuf *rarp_mbuf;
>
> + if (!dev->data->rx_queues)
> + return;
> +
> + rxvq = dev->data->rx_queues[0];
> rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
> (struct ether_addr *)hw->mac_addr);
> if (rarp_mbuf == NULL) {
>
Applied to dpdk-next-virtio/master.
Thanks,
Maxime
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