Xenial SRU - v4.4.50 stable update

[Tim Gardner]

http://bugs.launchpad.net/bugs/1666324

See attached pull request.
-- 
Tim Gardner tim.gardner at canonical.com
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The following changes since commit a01e1b315d7308ca41a37175c5481a9d9bbf7bd0:

  UBUNTU: SAUCE: pci-hyperv: lock pci bus on device eject (2017-02-17 07:09:14 -0200)

are available in the git repository at:

  git://kernel.ubuntu.com/rtg/ubuntu-xenial.git v4.4.50

for you to fetch changes up to 5509f69e05c4cc7ace338883402f6ff32dbd7d04:

  Linux 4.4.50 (2017-02-20 14:41:22 -0700)

----------------------------------------------------------------
Benjamin Poirier (1):
      mlx4: Invoke softirqs after napi_reschedule

Dan Carpenter (1):
      ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()

Eric Dumazet (10):
      can: Fix kernel panic at security_sock_rcv_skb
      ipv6: fix ip6_tnl_parse_tlv_enc_lim()
      tcp: fix 0 divide in __tcp_select_window()
      net: use a work queue to defer net_disable_timestamp() work
      ipv4: keep skb->dst around in presence of IP options
      netlabel: out of bound access in cipso_v4_validate()
      ip6_gre: fix ip6gre_err() invalid reads
      ipv6: tcp: add a missing tcp_v6_restore_cb()
      tcp: avoid infinite loop in tcp_splice_read()
      l2tp: do not use udp_ioctl()

Greg Kroah-Hartman (1):
      Linux 4.4.50

Marcelo Ricardo Leitner (1):
      sctp: avoid BUG_ON on sctp_wait_for_sndbuf

WANG Cong (2):
      sit: fix a double free on error path
      ping: fix a null pointer dereference

Willem de Bruijn (4):
      tun: read vnet_hdr_sz once
      macvtap: read vnet_hdr_size once
      net: introduce device min_header_len
      packet: round up linear to header len

 Makefile                                   |  2 +-
 drivers/net/ethernet/mellanox/mlx4/en_rx.c |  5 +++-
 drivers/net/loopback.c                     |  1 +
 drivers/net/macvtap.c                      |  4 +--
 drivers/net/tun.c                          | 10 +++++---
 include/linux/can/core.h                   |  7 +++--
 include/linux/netdevice.h                  |  4 +++
 include/net/cipso_ipv4.h                   |  4 +++
 net/can/af_can.c                           | 12 +++++++--
 net/can/af_can.h                           |  3 ++-
 net/can/bcm.c                              |  4 +--
 net/can/gw.c                               |  2 +-
 net/can/raw.c                              |  4 +--
 net/core/dev.c                             | 31 ++++++++++------------
 net/ethernet/eth.c                         |  1 +
 net/ipv4/cipso_ipv4.c                      |  4 +++
 net/ipv4/ip_sockglue.c                     |  9 ++++++-
 net/ipv4/ping.c                            |  2 ++
 net/ipv4/tcp.c                             |  6 +++++
 net/ipv4/tcp_output.c                      |  6 +++--
 net/ipv6/ip6_gre.c                         | 41 ++++++++++++++++--------------
 net/ipv6/ip6_tunnel.c                      | 34 ++++++++++++++++---------
 net/ipv6/sit.c                             |  1 +
 net/ipv6/tcp_ipv6.c                        | 24 +++++++++--------
 net/l2tp/l2tp_core.h                       |  1 +
 net/l2tp/l2tp_ip.c                         | 27 +++++++++++++++++++-
 net/l2tp/l2tp_ip6.c                        |  2 +-
 net/packet/af_packet.c                     |  7 ++---
 net/sctp/socket.c                          |  3 ++-
 29 files changed, 172 insertions(+), 89 deletions(-)