diff options
| author | Douglas Caetano dos Santos <douglascs@taghos.com.br> | 2017-05-12 15:19:15 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-07 12:07:43 +0200 |
| commit | f79d3307c0356b63711d53d999158bdad667004b (patch) | |
| tree | 104489bd1f3350e152dd792960aa87e14d0e01ee /net | |
| parent | 5e7d9f0b3f729a64b99e58047f7bb0ff36acb759 (diff) | |
net/packet: fix missing net_device reference release
[ Upstream commit d19b183cdc1fa3d70d6abe2a4c369e748cd7ebb8 ]
When using a TX ring buffer, if an error occurs processing a control
message (e.g. invalid message), the net_device reference is not
released.
Fixes c14ac9451c348 ("sock: enable timestamping using control messages")
Signed-off-by: Douglas Caetano dos Santos <douglascs@taghos.com.br>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/packet/af_packet.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index cb76ff3088e9..6a563e6e24de 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -2652,13 +2652,6 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg) dev = dev_get_by_index(sock_net(&po->sk), saddr->sll_ifindex); } - sockc.tsflags = po->sk.sk_tsflags; - if (msg->msg_controllen) { - err = sock_cmsg_send(&po->sk, msg, &sockc); - if (unlikely(err)) - goto out; - } - err = -ENXIO; if (unlikely(dev == NULL)) goto out; @@ -2666,6 +2659,13 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg) if (unlikely(!(dev->flags & IFF_UP))) goto out_put; + sockc.tsflags = po->sk.sk_tsflags; + if (msg->msg_controllen) { + err = sock_cmsg_send(&po->sk, msg, &sockc); + if (unlikely(err)) + goto out_put; + } + if (po->sk.sk_socket->type == SOCK_RAW) reserve = dev->hard_header_len; size_max = po->tx_ring.frame_size |