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linux/net/ipv4
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WANG Cong ef13840028 tcp: reset sk_rx_dst in tcp_disconnect() 
commit d747a7a51b upstream.

We have to reset the sk->sk_rx_dst when we disconnect a TCP
connection, because otherwise when we re-connect it this
dst reference is simply overridden in tcp_finish_connect().

This fixes a dst leak which leads to a loopback dev refcnt
leak. It is a long-standing bug, Kevin reported a very similar
(if not same) bug before. Thanks to Andrei for providing such
a reliable reproducer which greatly narrows down the problem.

Fixes: 41063e9dd1 ("ipv4: Early TCP socket demux.")
Reported-by: Andrei Vagin <avagin@gmail.com>
Reported-by: Kevin Xu <kaiwen.xu@hulu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-21 07:42:17 +02:00
..
netfilter
netfilter: arp_tables: fix invoking 32bit "iptable -P INPUT ACCEPT" failed in 64bit kernel
2016-11-30 20:50:23 +01:00
af_inet.c
net: ping: do not abuse udp_poll()
2017-06-14 15:05:52 +02:00
ah4.c
ah4: Fix error return in ah_input().
2015-08-25 13:38:50 -07:00
arp.c
NET: Fix /proc/net/arp for AX.25
2017-06-17 06:41:50 +02:00
cipso_ipv4.c
netlabel: out of bound access in cipso_v4_validate()
2017-02-18 15:11:41 +01:00
datagram.c
net: Set sk_txhash from a random number
2015-07-29 22:44:04 -07:00
devinet.c
netconf: add a notif when settings are created
2016-09-01 15:18:08 -07:00
esp4.c
esp4: Fix integrity verification when ESN are used
2016-11-30 11:09:39 +01:00
fib_frontend.c
net: Improve handling of failures on link and route dumps
2017-06-07 12:07:44 +02:00
fib_lookup.h
ipv4: consider TOS in fib_select_default
2015-07-24 22:46:11 -07:00
fib_rules.c
switchdev: remove FIB offload infrastructure
2016-09-28 04:48:00 -04:00
fib_semantics.c
ipv4: add reference counting to metrics
2017-06-07 12:07:46 +02:00
fib_trie.c
net: Improve handling of failures on link and route dumps
2017-06-07 12:07:44 +02:00
fou.c
net: add recursion limit to GRO
2016-10-20 14:32:22 -04:00
gre_demux.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-06-30 05:03:36 -04:00
gre_offload.c
net: add recursion limit to GRO
2016-10-20 14:32:22 -04:00
icmp.c
net: icmp_route_lookup should use rt dev to determine L3 domain
2016-11-09 18:49:39 -05:00
igmp.c
igmp: add a missing spin_lock_init()
2017-07-05 14:40:15 +02:00
inet_connection_sock.c
dccp/tcp: do not inherit mc_list from parent
2017-06-07 12:07:42 +02:00
inet_diag.c
net: inet: diag: expose the socket mark to privileged processes.
2016-09-08 16:13:09 -07:00
inet_fragment.c
net: disable fragment reassembly if high_thresh is zero
2016-06-05 22:56:42 -04:00
inet_hashtables.c
net: Require exact match for TCP socket lookups if dif is l3mdev
2016-10-17 10:17:05 -04:00
inet_timewait_sock.c
timers, net/ipv4/inet: Initialize connection request timers as pinned
2016-07-07 10:35:06 +02:00
inetpeer.c
net: Add helper function to compare inetpeer addresses
2015-08-28 13:32:36 -07:00
ip_forward.c
ipv4: allow local fragmentation in ip_finish_output_gso()
2016-11-03 16:10:26 -04:00
ip_fragment.c
net: rename IP_INC_STATS_BH()
2016-04-27 22:48:23 -04:00
ip_gre.c
net/ip_tunnels: Introduce tunnel_id_to_key32() and key32_to_tunnel_id()
2016-09-10 20:53:55 -07:00
ip_input.c
net: VRF: Pass original iif to ip_route_input()
2016-09-16 04:24:07 -04:00
ip_options.c
net: ipv4: Convert IP network timestamps to be y2038 safe
2016-03-01 17:18:44 -05:00
ip_output.c
tcp: fix mark propagation with fwmark_reflect enabled
2017-02-18 15:11:43 +01:00
ip_sockglue.c
net-timestamp: avoid use-after-free in ip_recv_error
2017-05-03 08:36:36 -07:00
ip_tunnel_core.c
net: Specify the owning module for lwtunnel ops
2017-02-04 09:47:11 +01:00
ip_tunnel.c
ip_tunnel: add collect_md mode to IPIP tunnel
2016-09-17 10:13:07 -04:00
ip_vti.c
vti: use right inner_mode for inbound inter address family policy checks
2016-09-09 09:02:08 +02:00
ipcomp.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
ipconfig.c
net: ipconfig: Fix NULL pointer dereference on RARP/BOOTP/DHCP timeout
2016-08-22 21:04:41 -07:00
ipip.c
ip_tunnel: add collect_md mode to IPIP tunnel
2016-09-17 10:13:07 -04:00
ipmr.c
ipv4: allow local fragmentation in ip_finish_output_gso()
2016-11-03 16:10:26 -04:00
Kconfig
tcp: Set DEFAULT_TCP_CONG to bbr if DEFAULT_BBR is set
2016-11-28 12:15:00 -05:00
Makefile
tcp_bbr: add BBR congestion control
2016-09-21 00:23:01 -04:00
netfilter.c
netfilter: use skb_to_full_sk in ip_route_me_harder
2017-07-05 14:40:28 +02:00
ping.c
ping: implement proper locking
2017-05-03 08:36:34 -07:00
proc.c
net: Suppress the "Comparison to NULL could be written" warnings
2016-09-30 01:50:45 -04:00
protocol.c
net: Export inet_offloads and inet6_offloads
2014-09-19 17:15:31 -04:00
raw.c
ipv4, ipv6: ensure raw socket message is big enough to hold an IP header
2017-05-14 14:00:21 +02:00
route.c
ipv4: add reference counting to metrics
2017-06-07 12:07:46 +02:00
syncookies.c
net: rename NET_{ADD|INC}_STATS_BH()
2016-04-27 22:48:24 -04:00
sysctl_net_ipv4.c
ipv4: use the right lock for ping_group_range
2016-10-22 16:23:12 -04:00
tcp_bbr.c
tcp_bbr: add BBR congestion control
2016-09-21 00:23:01 -04:00
tcp_bic.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_cdg.c
tcp: cdg: rename struct minmax in tcp_cdg.c to avoid a naming conflict
2016-09-21 00:22:59 -04:00
tcp_cong.c
tcp: disallow cwnd undo when switching congestion control
2017-06-14 15:05:52 +02:00
tcp_cubic.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_dctcp.c
dctcp: avoid bogus doubling of cwnd after loss
2016-10-31 15:16:28 -04:00
tcp_diag.c
net: diag: Fix refcnt leak in error path destroying socket
2016-08-23 23:11:36 -07:00
tcp_fastopen.c
tcp: initialize max window for a new fastopen socket
2017-02-04 09:47:10 +01:00
tcp_highspeed.c
tcp: add tcp_in_slow_start helper
2015-07-09 14:22:52 -07:00
tcp_htcp.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_hybla.c
tcp: do not slow start when cwnd equals ssthresh
2015-07-09 14:22:52 -07:00
tcp_illinois.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_input.c
tcp: eliminate negative reordering in tcp_clean_rtx_queue
2017-06-07 12:07:44 +02:00
tcp_ipv4.c
dccp/tcp: fix routing redirect race
2017-03-22 12:43:34 +01:00
tcp_lp.c
tcp: fix wraparound issue in tcp_lp
2017-05-14 14:00:21 +02:00
tcp_metrics.c
tcp: make nla_policy const
2016-09-01 14:09:01 -07:00
tcp_minisocks.c
tcp: do not inherit fastopen_req from parent
2017-05-14 14:00:21 +02:00
tcp_nv.c
tcp: add NV congestion control
2016-06-10 23:07:49 -07:00
tcp_offload.c
gso: Support partial splitting at the frag_list pointer
2016-09-19 20:59:34 -04:00
tcp_output.c
tcp: do not underestimate skb->truesize in tcp_trim_head()
2017-05-14 14:00:20 +02:00
tcp_probe.c
tcp: tcp_probe: use spin_lock_bh()
2017-06-17 06:41:49 +02:00
tcp_rate.c
tcp: export data delivery rate
2016-09-21 00:23:00 -04:00
tcp_recovery.c
tcp: do not assume TCP code is non preemptible
2016-05-02 17:02:25 -04:00
tcp_scalable.c
tcp: add tcp_in_slow_start helper
2015-07-09 14:22:52 -07:00
tcp_timer.c
tcp: fix various issues for sockets morphing to listen state
2017-03-22 12:43:33 +01:00
tcp_vegas.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_vegas.h
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_veno.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_westwood.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_yeah.c
tcp: cwnd does not increase in TCP YeAH
2016-09-08 17:16:12 -07:00
tcp.c
tcp: reset sk_rx_dst in tcp_disconnect()
2017-07-21 07:42:17 +02:00
tunnel4.c
tunnels: correct conditional build of MPLS and IPv6
2016-07-11 13:27:06 -07:00
udp_diag.c
net: inet: diag: expose the socket mark to privileged processes.
2016-09-08 16:13:09 -07:00
udp_impl.h
udplite: call proper backlog handlers
2016-11-24 15:32:14 -05:00
udp_offload.c
net: add recursion limit to GRO
2016-10-20 14:32:22 -04:00
udp_tunnel.c
net: Remove deprecated tunnel specific UDP offload functions
2016-06-17 20:23:32 -07:00
udp.c
udplite: call proper backlog handlers
2016-11-24 15:32:14 -05:00
udplite.c
udplite: call proper backlog handlers
2016-11-24 15:32:14 -05:00
xfrm4_input.c
netfilter: Pass net into okfn
2015-09-17 17:18:37 -07:00
xfrm4_mode_beet.c
…
xfrm4_mode_transport.c
…
xfrm4_mode_tunnel.c
ipv4: hash net ptr into fragmentation bucket selection
2015-03-25 14:07:04 -04:00
xfrm4_output.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-10-24 06:54:12 -07:00
xfrm4_policy.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-09-12 15:52:44 -07:00
xfrm4_protocol.c
…
xfrm4_state.c
…
xfrm4_tunnel.c
…