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Eric Dumazet 86aef177e0 net/tcp_fastopen: fix data races around tfo_active_disable_stamp 
[ Upstream commit 6f20c8adb1813467ea52c1296d52c4e95978cb2f ]

tfo_active_disable_stamp is read and written locklessly.
We need to annotate these accesses appropriately.

Then, we need to perform the atomic_inc(tfo_active_disable_times)
after the timestamp has been updated, and thus add barriers
to make sure tcp_fastopen_active_should_disable() wont read
a stale timestamp.

Fixes: cf1ef3f0719b ("net/tcp_fastopen: Disable active side TFO in certain scenarios")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Wei Wang <weiwan@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Wei Wang <weiwan@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-28 11:13:48 +02:00
..
bpfilter
bpfilter: remove trailing newline
2018-07-24 14:10:42 -07:00
netfilter
netfilter: x_tables: fix compat match/target pad out-of-bound write
2021-04-16 11:49:31 +02:00
af_inet.c
net: don't clear sock->sk early to avoid trouble in strparser
2020-01-27 14:50:52 +01:00
ah4.c
…
arp.c
proc: introduce proc_create_net{,_data}
2018-05-16 07:24:30 +02:00
cipso_ipv4.c
net: ipv4: fix memory leak in netlbl_cipsov4_add_std
2021-06-30 08:48:15 -04:00
datagram.c
inet: stop leaking jiffies on the wire
2019-11-10 11:27:37 +01:00
devinet.c
devinet: fix memleak in inetdev_init()
2020-06-10 21:34:58 +02:00
esp4_offload.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
2018-07-27 09:33:37 -07:00
esp4.c
esp: avoid unneeded kmap_atomic call
2021-01-23 15:49:55 +01:00
fib_frontend.c
net/ipv4: swap flow ports when validating source
2021-07-20 16:15:51 +02:00
fib_lookup.h
…
fib_notifier.c
…
fib_rules.c
net: fib_rules: add extack support
2018-04-23 10:21:24 -04:00
fib_semantics.c
net: Fix the arp error in some cases
2020-06-30 23:17:06 -04:00
fib_trie.c
ipv4: Silence suspicious RCU usage warning
2020-08-11 15:32:34 +02:00
fou.c
net: fou: do not use guehdr after iptunnel_pull_offloads in gue_udp_recv
2019-04-27 09:36:31 +02:00
gre_demux.c
erspan: fix version 1 check in gre_parse_header()
2021-01-12 20:10:19 +01:00
gre_offload.c
net: gre: recompute gre csum for sctp over gre tunnels
2020-08-11 15:32:34 +02:00
icmp.c
icmp: don't send out ICMP messages with a source address of 0.0.0.0
2021-06-30 08:48:21 -04:00
igmp.c
net: ipv4: fix memory leak in ip_mc_add1_src
2021-06-30 08:48:20 -04:00
inet_connection_sock.c
tcp: relookup sock for RST+ACK packets handled by obsolete req sock
2021-04-07 12:48:47 +02:00
inet_diag.c
inet_diag: Fix error path to cancel the meseage in inet_req_diag_fill()
2020-11-24 13:27:16 +01:00
inet_fragment.c
net: IP defrag: encapsulate rbtree defrag code into callable functions
2019-04-27 09:36:33 +02:00
inet_hashtables.c
net: initialize fastreuse on inet_inherit_port
2020-08-19 08:15:04 +02:00
inet_timewait_sock.c
soreuseport: initialise timewait reuseport field
2018-04-07 22:32:32 -04:00
inetpeer.c
inetpeer: fix data-race in inet_putpeer / inet_putpeer
2020-01-04 19:13:29 +01:00
ip_forward.c
net: clear skb->tstamp in forwarding paths
2019-01-09 17:38:31 +01:00
ip_fragment.c
net: IP defrag: encapsulate rbtree defrag code into callable functions
2019-04-27 09:36:33 +02:00
ip_gre.c
ip_gre: set dev->hard_header_len and dev->needed_headroom properly
2020-10-30 10:38:28 +01:00
ip_input.c
vrf: check accept_source_route on the original netdevice
2019-04-17 08:38:42 +02:00
ip_options.c
vrf: check accept_source_route on the original netdevice
2019-04-17 08:38:42 +02:00
ip_output.c
net: ip: avoid OOM kills with large UDP sends over loopback
2021-07-20 16:16:02 +02:00
ip_sockglue.c
net: bpfilter: fix iptables failure if bpfilter_umh is disabled
2019-12-01 09:17:18 +01:00
ip_tunnel_core.c
ip_tunnel: allow not to count pkts on tstats by setting skb's dev to NULL
2019-08-04 09:30:57 +02:00
ip_tunnel.c
net: ip_tunnel: fix mtu calculation for ETHER tunnel devices
2021-07-28 11:13:46 +02:00
ip_vti.c
ip_vti: receive ipip packet by calling ip_tunnel_rcv
2020-06-03 08:19:46 +02:00
ipcomp.c
…
ipconfig.c
net: ipconfig: Don't override command-line hostnames or domains
2021-06-30 08:48:13 -04:00
ipip.c
net: ipip: fix wrong address family in init error path
2020-06-03 08:19:10 +02:00
ipmr_base.c
net: ipmr: fix unresolved entry dumps
2018-10-17 22:35:42 -07:00
ipmr.c
ipmr: Fix skb headroom in ipmr_get_route().
2019-11-20 18:45:11 +01:00
Kconfig
vti[6]: fix packet tx through bpf_redirect() in XinY cases
2020-04-02 15:28:18 +02:00
Makefile
net: remove blank lines at end of file
2018-07-24 14:10:43 -07:00
metrics.c
net: metrics: add proper netlink validation
2018-06-05 12:29:43 -04:00
netfilter.c
netfilter: use actual socket sk rather than skb sk when routing harder
2020-11-18 19:18:44 +01:00
netlink.c
ipv4: Add ICMPv6 support when parse route ipproto
2019-03-10 07:17:17 +01:00
ping.c
ping: Check return value of function 'ping_queue_rcv_skb'
2021-06-30 08:48:30 -04:00
proc.c
tcp: tcp_fragment() should apply sane memory limits
2019-06-17 19:51:56 +02:00
protocol.c
…
raw_diag.c
inet_diag: return classid for all socket types
2020-03-18 07:14:11 +01:00
raw.c
ipv4: Use return value of inet_iif() for __raw_v4_lookup in the while loop
2019-07-03 13:14:46 +02:00
route.c
net: lwtunnel: handle MTU calculation in forwading
2021-07-20 16:15:52 +02:00
syncookies.c
net: Update window_clamp if SOCK_RCVBUF is set
2020-11-18 19:18:51 +01:00
sysctl_net_ipv4.c
tcp: add tcp_min_snd_mss sysctl
2019-06-17 19:51:56 +02:00
tcp_bbr.c
tcp: only postpone PROBE_RTT if RTT is < current min_rtt estimate
2020-11-24 13:27:18 +01:00
tcp_bic.c
…
tcp_cdg.c
…
tcp_cong.c
net: Only allow init netns to set default tcp cong to a restricted algo
2021-05-22 10:59:39 +02:00
tcp_cubic.c
tcp_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT
2020-06-30 23:17:06 -04:00
tcp_dctcp.c
tcp: Ensure DCTCP reacts to losses
2019-04-17 08:38:41 +02:00
tcp_diag.c
tcp: annotate tp->write_seq lockless reads
2021-03-17 16:43:43 +01:00
tcp_fastopen.c
net/tcp_fastopen: fix data races around tfo_active_disable_stamp
2021-07-28 11:13:48 +02:00
tcp_highspeed.c
…
tcp_htcp.c
…
tcp_hybla.c
…
tcp_illinois.c
net/tcp/illinois: replace broken algorithm reference link
2018-02-28 12:03:47 -05:00
tcp_input.c
tcp: annotate tp->copied_seq lockless reads
2021-03-17 16:43:42 +01:00
tcp_ipv4.c
tcp: annotate data races around tp->mtu_info
2021-07-28 11:13:45 +02:00
tcp_lp.c
…
tcp_metrics.c
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
tcp_minisocks.c
tcp: relookup sock for RST+ACK packets handled by obsolete req sock
2021-04-07 12:48:47 +02:00
tcp_nv.c
tcp_nv: fix potential integer overflow in tcpnv_acked
2018-01-31 10:26:30 -05:00
tcp_offload.c
tcp: Don't coalesce decrypted and encrypted SKBs
2018-07-16 00:12:09 -07:00
tcp_output.c
ipv6: tcp: drop silly ICMPv6 packet too big messages
2021-07-28 11:13:45 +02:00
tcp_rate.c
tcp: expose both send and receive intervals for rate sample
2018-07-11 23:01:56 -07:00
tcp_recovery.c
tcp: fix TLP timer not set when CA_STATE changes from DISORDER to OPEN
2021-02-03 23:23:27 +01:00
tcp_scalable.c
…
tcp_timer.c
tcp: fix SNMP TCP timeout under-estimation
2019-12-13 08:52:20 +01:00
tcp_ulp.c
tcp, ulp: fix leftover icsk_ulp_ops preventing sock from reattach
2018-08-16 14:58:08 -07:00
tcp_vegas.c
…
tcp_vegas.h
…
tcp_veno.c
…
tcp_westwood.c
…
tcp_yeah.c
…
tcp.c
tcp: add sanity tests to TCP_QUEUE_SEQ
2021-03-17 16:43:43 +01:00
tunnel4.c
inet: whitespace cleanup
2018-02-28 11:43:28 -05:00
udp_diag.c
inet_diag: return classid for all socket types
2020-03-18 07:14:11 +01:00
udp_impl.h
…
udp_offload.c
net: Fix gro aggregation for udp encaps with zero csum
2021-03-17 16:43:42 +01:00
udp_tunnel.c
…
udp.c
udp: annotate data races around unix_sk(sk)->gso_size
2021-07-28 11:13:46 +02:00
udplite.c
proc: introduce proc_create_net{,_data}
2018-05-16 07:24:30 +02:00
xfrm4_input.c
xfrm: reset transport header back to network header after all input transforms ahave been applied
2018-09-04 10:26:30 +02:00
xfrm4_mode_beet.c
…
xfrm4_mode_transport.c
xfrm: reset transport header back to network header after all input transforms ahave been applied
2018-09-04 10:26:30 +02:00
xfrm4_mode_tunnel.c
xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto
2018-03-07 10:54:29 +01:00
xfrm4_output.c
xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish
2020-04-29 16:31:23 +02:00
xfrm4_policy.c
net: add bool confirm_neigh parameter for dst_ops.update_pmtu
2020-01-04 19:13:37 +01:00
xfrm4_protocol.c
…
xfrm4_state.c
…
xfrm4_tunnel.c
…