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| author | Michael Dalton <mwdalton@google.com> | 2013-12-05 13:14:05 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-06 16:31:43 -0500 |
| commit | 98bfd23cdb30e68e90571d7a2607e9479f8a50ec (patch) | |
| tree | 42acca7d11c900abc8e45b2d1515e958e6cd4ca6 /drivers/net/virtio_net.c | |
| parent | a328f3a0599e30d0d30333ec9f30cb1fa44c561a (diff) | |
| download | lwn-98bfd23cdb30e68e90571d7a2607e9479f8a50ec.tar.gz lwn-98bfd23cdb30e68e90571d7a2607e9479f8a50ec.zip | |
virtio-net: free bufs correctly on invalid packet length
When a packet with invalid length arrives, ensure that the packet
is freed correctly if mergeable packet buffers and big packets
(GUEST_TSO4) are both enabled.
Signed-off-by: Michael Dalton <mwdalton@google.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Andrew Vagin <avagin@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/virtio_net.c')
| -rw-r--r-- | drivers/net/virtio_net.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index c29376443428..d208f8604981 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -426,10 +426,10 @@ static void receive_buf(struct receive_queue *rq, void *buf, unsigned int len) if (unlikely(len < sizeof(struct virtio_net_hdr) + ETH_HLEN)) { pr_debug("%s: short packet %i\n", dev->name, len); dev->stats.rx_length_errors++; - if (vi->big_packets) - give_pages(rq, buf); - else if (vi->mergeable_rx_bufs) + if (vi->mergeable_rx_bufs) put_page(virt_to_head_page(buf)); + else if (vi->big_packets) + give_pages(rq, buf); else dev_kfree_skb(buf); return; |