tree 49d4b6bc829ca1d1cb587b2a6f9acbf82a4ea2bf
parent 99e872ae1eacb560152c0123cf1cef571569e681
author Michael S. Tsirkin <mst@redhat.com> 1385638255 +0200
committer David S. Miller <davem@davemloft.net> 1385947636 -0500

virtio_net: fix error handling for mergeable buffers

Eric Dumazet noticed that if we encounter an error
when processing a mergeable buffer, we don't
dequeue all of the buffers from this packet,
the result is almost sure to be loss of networking.

Jason Wang noticed that we also leak a page and that we don't decrement
the rq buf count, so we won't repost buffers (a resource leak).

Fix both issues.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael Dalton <mwdalton@google.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>