virtio_net: Fix out of bounds access of sq

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[ Upstream commit 1667c08a9d ]

When XDP is disabled, curr_queue_pairs + smp_processor_id() can be
larger than max_queue_pairs.
There is no guarantee that we have enough XDP send queues dedicated for
each cpu when XDP is disabled, so do not count drops on sq in that case.

Fixes: 5b8f3c8d30 ("virtio_net: Add XDP related stats")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Toshiaki Makita 2019-01-29 09:45:56 +09:00 • committed by Greg Kroah-Hartman

parent b5401bd93f

commit 40d0583677

1 changed files with 7 additions and 10 deletions

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drivers/net/virtio_net.c

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