Yuchung Cheng fc36a2a38f tcp: ignore Fast Open on repair mode ... [ Upstream commit 16ae6aa1705299789f71fdea59bfb119c1fbd9c0 ] The TCP repair sequence of operation is to first set the socket in repair mode, then inject the TCP stats into the socket with repair socket options, then call connect() to re-activate the socket. The connect syscall simply returns and set state to ESTABLISHED mode. As a result Fast Open is meaningless for TCP repair. However allowing sendto() system call with MSG_FASTOPEN flag half-way during the repair operation could unexpectedly cause data to be sent, before the operation finishes changing the internal TCP stats (e.g. MSS). This in turn triggers TCP warnings on inconsistent packet accounting. The fix is to simply disallow Fast Open operation once the socket is in the repair mode. Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-05-26 08:48:48 +02:00
..
netfilter	netfilter: nf_nat_h323: fix logical-not-parentheses warning	2018-04-08 11:51:57 +02:00
af_inet.c	net: ping: do not abuse udp_poll()	2017-06-14 13:16:19 +02:00
ah4.c	ipsec: check return value of skb_to_sgvec always	2018-04-13 19:50:23 +02:00
arp.c	arp: fix arp_filter on l3slave devices	2018-04-13 19:50:24 +02:00
cipso_ipv4.c	tcp/dccp: fix ireq->opt races	2017-11-18 11:11:06 +01:00
datagram.c
devinet.c	ipv4: igmp: guard against silly MTU values	2018-01-02 20:33:24 +01:00
esp4.c	ipsec: check return value of skb_to_sgvec always	2018-04-13 19:50:23 +02:00
fib_frontend.c	ipv4: Fix use-after-free when flushing FIB tables	2018-01-02 20:33:26 +01:00
fib_lookup.h
fib_rules.c	net: ipv6: use common fib_default_rule_pref	2015-09-09 14:19:50 -07:00
fib_semantics.c	fib_semantics: Don't match route with mismatching tclassid	2018-03-11 16:19:45 +01:00
fib_trie.c	net: Improve handling of failures on link and route dumps	2017-06-07 12:05:58 +02:00
fou.c	net: add recursion limit to GRO	2016-11-15 07:46:38 +01:00
gre_demux.c
gre_offload.c	net: add recursion limit to GRO	2016-11-15 07:46:38 +01:00
icmp.c	Revert "ipv4/icmp: redirect messages can use the ingress daddr as source"	2015-10-14 06:01:07 -07:00
igmp.c	net: igmp: add a missing rcu locking section	2018-02-16 20:09:37 +01:00
inet_connection_sock.c	tcp/dccp: fix other lockdep splats accessing ireq_opt	2017-11-18 11:11:07 +01:00
inet_diag.c	tcp/dccp: install syn_recv requests into ehash table	2015-10-03 04:32:41 -07:00
inet_fragment.c	net: Fix hlist corruptions in inet_evict_bucket()	2018-03-31 18:12:33 +02:00
inet_hashtables.c	tcp/dccp: fix hashdance race for passive sessions	2015-10-23 05:42:21 -07:00
inet_lro.c
inet_timewait_sock.c	soreuseport: initialise timewait reuseport field	2018-05-16 10:06:50 +02:00
inetpeer.c	net: Add helper function to compare inetpeer addresses	2015-08-28 13:32:36 -07:00
ip_forward.c	net: Pass net into dst_output and remove dst_output_okfn	2015-10-08 04:26:54 -07:00
ip_fragment.c	inet: frag: release spinlock before calling icmp_send()	2017-12-25 14:22:11 +01:00
ip_gre.c	vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices	2016-06-24 10:18:18 -07:00
ip_input.c	ipv4: Pass struct net into ip_defrag and ip_check_defrag	2015-10-12 19:44:16 -07:00
ip_options.c
ip_output.c	net: account for current skb length when deciding about UFO	2017-08-12 19:29:09 -07:00
ip_sockglue.c	net: Only honor ifindex in IP_PKTINFO if non-0	2018-03-31 18:12:33 +02:00
ip_tunnel.c	ip_tunnel: better validate user provided tunnel names	2018-04-13 19:50:26 +02:00
ip_tunnel_core.c	tunnels: Remove encapsulation offloads on decap.	2016-10-31 04:13:59 -06:00
ip_vti.c	vti: fix use after free in vti_tunnel_xmit/vti6_tnl_xmit	2017-10-21 17:09:02 +02:00
ipcomp.c
ipconfig.c	ipv4: ipconfig: avoid unused ic_proto_used symbol	2018-02-25 11:03:47 +01:00
ipip.c	ipip: only increase err_count for some certain type icmp in ipip_err	2017-11-18 11:11:06 +01:00
ipmr.c	ipmr, ip6mr: fix scheduling while atomic and a deadlock with ipmr_get_route	2016-11-15 07:46:37 +01:00
Kconfig	ip_tunnel: replace dst_cache with generic implementation	2018-02-28 10:17:21 +01:00
Makefile	tcp: track the packet timings in RACK	2015-10-21 07:00:48 -07:00
netfilter.c	netfilter: use skb_to_full_sk in ip_route_me_harder	2018-03-18 11:17:51 +01:00
ping.c	ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg	2018-05-26 08:48:46 +02:00
proc.c
protocol.c
raw.c	net: ipv4: fix for a race condition in raw_sendmsg	2018-01-02 20:33:25 +01:00
route.c	net: ipv4: don't allow setting net.ipv4.route.min_pmtu below 68	2018-03-11 16:19:46 +01:00
syncookies.c	tcp/dccp: fix ireq->opt races	2017-11-18 11:11:06 +01:00
sysctl_net_ipv4.c	ipv4: use the right lock for ping_group_range	2016-11-15 07:46:38 +01:00
tcp.c	tcp: ignore Fast Open on repair mode	2018-05-26 08:48:48 +02:00
tcp_bic.c
tcp_cdg.c
tcp_cong.c	tcp: disallow cwnd undo when switching congestion control	2017-06-14 13:16:19 +02:00
tcp_cubic.c	tcp_cubic: do not set epoch_start in the future	2015-09-17 22:35:07 -07:00
tcp_dctcp.c	dctcp: avoid bogus doubling of cwnd after loss	2016-11-21 10:06:39 +01:00
tcp_diag.c	tcp: ensure proper barriers in lockless contexts	2015-11-15 18:36:38 -05:00
tcp_fastopen.c	tcp: initialize max window for a new fastopen socket	2017-02-04 09:45:09 +01:00
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c	tcp: don't read out-of-bounds opsize	2018-04-29 07:50:05 +02:00
tcp_ipv4.c	tcp md5sig: Use skb's saddr when replying to an incoming segment	2018-01-02 20:33:25 +01:00
tcp_lp.c	tcp: fix wraparound issue in tcp_lp	2017-05-14 13:32:58 +02:00
tcp_memcontrol.c
tcp_metrics.c	tcp: convert cached rtt from usec to jiffies when feeding initial rto	2016-04-20 15:41:56 +09:00
tcp_minisocks.c	tcp: do not inherit fastopen_req from parent	2017-05-14 13:32:58 +02:00
tcp_offload.c
tcp_output.c	tcp: do not mangle skb->cb[] in tcp_make_synack()	2017-11-24 08:32:23 +01:00
tcp_probe.c
tcp_recovery.c	tcp: use RACK to detect losses	2015-10-21 07:00:53 -07:00
tcp_scalable.c
tcp_timer.c	net: tcp: close sock if net namespace is exiting	2018-01-31 12:06:14 +01:00
tcp_vegas.c	tcp: fix under-evaluated ssthresh in TCP Vegas	2017-12-25 14:22:15 +01:00
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c	tcp: cwnd does not increase in TCP YeAH	2016-09-30 10:18:34 +02:00
tunnel4.c
udp.c	ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg	2018-05-26 08:48:46 +02:00
udp_diag.c
udp_impl.h
udp_offload.c	net: avoid skb_warn_bad_offload false positives on UFO	2017-08-12 19:29:08 -07:00
udp_tunnel.c	tunnel: Clear IPCB(skb)->opt before dst_link_failure called	2016-04-20 15:41:56 +09:00
udplite.c
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
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 branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec	2015-12-22 16:26:31 -05:00
xfrm4_protocol.c
xfrm4_state.c
xfrm4_tunnel.c