linux_dsm_epyc7002/net/ipv4
Eric Dumazet 13475a30b6 tcp: connect() race with timewait reuse
Its currently possible that several threads issuing a connect() find
the same timewait socket and try to reuse it, leading to list
corruptions.

Condition for bug is that these threads bound their socket on same
address/port of to-be-find timewait socket, and connected to same
target. (SO_REUSEADDR needed)

To fix this problem, we could unhash timewait socket while holding
ehash lock, to make sure lookups/changes will be serialized. Only
first thread finds the timewait socket, other ones find the
established socket and return an EADDRNOTAVAIL error.

This second version takes into account Evgeniy's review and makes sure
inet_twsk_put() is called outside of locked sections.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 16:17:43 -08:00
..
netfilter Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2009-12-03 13:23:12 -08:00
af_inet.c net: check kern before calling security subsystem 2009-11-05 22:18:18 -08:00
ah4.c xfrm: Use the user specified truncation length in ESP and AH 2009-11-25 15:48:41 -08:00
arp.c net: make neigh_ops constant 2009-09-01 17:40:57 -07:00
cipso_ipv4.c ipv4: Define cipso_v4_delopt static 2009-10-07 14:45:58 -07:00
datagram.c inet: rename some inet_sock fields 2009-10-18 18:52:53 -07:00
devinet.c ipv4 05/05: add sysctl to accept packets with local source addresses 2009-12-03 12:14:38 -08:00
esp4.c xfrm: Use the user specified truncation length in ESP and AH 2009-11-25 15:48:41 -08:00
fib_frontend.c ipv4 05/05: add sysctl to accept packets with local source addresses 2009-12-03 12:14:38 -08:00
fib_hash.c ipv4: fib table algorithm performance improvement 2009-10-05 00:21:56 -07:00
fib_lookup.h ipv4: cleanup - remove two unused parameters from fib_semantic_match(). 2009-05-18 15:16:37 -07:00
fib_rules.c net: Allow fib_rule_unregister to batch 2009-12-03 12:22:55 -08:00
fib_semantics.c net: use net_eq to compare nets 2009-11-25 15:14:13 -08:00
fib_trie.c ipv4: fib table algorithm performance improvement 2009-10-05 00:21:56 -07:00
icmp.c icmp: icmp_send() can avoid a dev_put() 2009-11-01 23:55:10 -08:00
igmp.c net: Move && and || to end of previous line 2009-11-29 16:55:45 -08:00
inet_connection_sock.c TCPCT part 1a: add request_values parameter for sending SYNACK 2009-12-02 22:07:23 -08:00
inet_diag.c inet: rename some inet_sock fields 2009-10-18 18:52:53 -07:00
inet_fragment.c inet fragments: fix sparse warning: context imbalance 2009-02-26 23:13:35 -08:00
inet_hashtables.c tcp: connect() race with timewait reuse 2009-12-03 16:17:43 -08:00
inet_lro.c net/ipv4: Move && and || to end of previous line 2009-11-23 10:41:23 -08:00
inet_timewait_sock.c tcp: connect() race with timewait reuse 2009-12-03 16:17:43 -08:00
inetpeer.c inetpeer: Optimize inet_getid() 2009-11-13 20:46:58 -08:00
ip_forward.c net: skb->dst accessors 2009-06-03 02:51:04 -07:00
ip_fragment.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-12-01 22:13:38 -08:00
ip_gre.c net: Simplify ip_gre pernet operations. 2009-12-01 16:15:57 -08:00
ip_input.c net: use net_eq to compare nets 2009-11-25 15:14:13 -08:00
ip_options.c net: skb->dst accessors 2009-06-03 02:51:04 -07:00
ip_output.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-12-01 22:13:38 -08:00
ip_sockglue.c net: Cleanup redundant tests on unsigned 2009-10-29 01:39:54 -07:00
ipcomp.c net: constify struct net_protocol 2009-09-14 17:03:01 -07:00
ipconfig.c net/ipv4: Move && and || to end of previous line 2009-11-23 10:41:23 -08:00
ipip.c net: Simplify ipip pernet operations. 2009-12-01 16:15:58 -08:00
ipmr.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-11-17 00:05:02 -08:00
Kconfig ipv4: update ARPD help text 2009-06-13 23:36:32 -07:00
Makefile IPVS: Move IPVS to net/netfilter/ipvs 2008-10-07 08:38:24 +11:00
netfilter.c net: Move && and || to end of previous line 2009-11-29 16:55:45 -08:00
proc.c snmp: add missing counters for RFC 4293 2009-04-27 02:45:02 -07:00
protocol.c net: constify struct net_protocol 2009-09-14 17:03:01 -07:00
raw.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-29 21:28:59 -07:00
route.c net: NETDEV_UNREGISTER_PERNET -> NETDEV_UNREGISTER_BATCH 2009-12-01 16:15:50 -08:00
syncookies.c TCPCT part 1g: Responder Cookie => Initiator 2009-12-02 22:07:26 -08:00
sysctl_net_ipv4.c TCPCT part 1c: sysctl_tcp_cookie_size, socket option TCP_COOKIE_TRANSACTIONS 2009-12-02 22:07:24 -08:00
tcp_bic.c tcp: add helper for AI algorithm 2009-03-02 03:00:15 -08:00
tcp_cong.c Networking: use CAP_NET_ADMIN when deciding to call request_module 2009-08-14 11:18:34 +10:00
tcp_cubic.c tcp: add helper for AI algorithm 2009-03-02 03:00:15 -08:00
tcp_diag.c tcp: diag: Dont report negative values for rx queue 2009-12-03 16:06:13 -08:00
tcp_highspeed.c [TCP]: Cong.ctrl modules: remove unused good_ack from cong_avoid 2008-01-28 14:55:41 -08:00
tcp_htcp.c net/ipv4: Move && and || to end of previous line 2009-11-23 10:41:23 -08:00
tcp_hybla.c tcp: Fix tcp_hybla zero congestion window growth with small rho and large cwnd. 2008-10-07 15:58:17 -07:00
tcp_illinois.c [TCP]: Cong.ctrl modules: remove unused good_ack from cong_avoid 2008-01-28 14:55:41 -08:00
tcp_input.c TCPCT part 1g: Responder Cookie => Initiator 2009-12-02 22:07:26 -08:00
tcp_ipv4.c tcp: diag: Dont report negative values for rx queue 2009-12-03 16:06:13 -08:00
tcp_lp.c net/ipv4: Move && and || to end of previous line 2009-11-23 10:41:23 -08:00
tcp_minisocks.c TCPCT part 1g: Responder Cookie => Initiator 2009-12-02 22:07:26 -08:00
tcp_output.c tcp: sysctl_tcp_cookie_size needs to be exported to modules. 2009-12-02 22:18:58 -08:00
tcp_probe.c net/ipv4: Move && and || to end of previous line 2009-11-23 10:41:23 -08:00
tcp_scalable.c tcp: add helper for AI algorithm 2009-03-02 03:00:15 -08:00
tcp_timer.c net: Fix for dst_negative_advice 2009-10-20 18:55:46 -07:00
tcp_vegas.c tcp: tcp_vegas ssthresh bugfix 2009-05-25 22:44:59 -07:00
tcp_vegas.h [TCP]: congestion control API pass RTT in microseconds 2007-07-31 02:27:57 -07:00
tcp_veno.c net/ipv4: Move && and || to end of previous line 2009-11-23 10:41:23 -08:00
tcp_westwood.c [TCP]: congestion control API pass RTT in microseconds 2007-07-31 02:27:57 -07:00
tcp_yeah.c net/ipv4: Move && and || to end of previous line 2009-11-23 10:41:23 -08:00
tcp.c TCPCT part 1e: implement socket option TCP_COOKIE_TRANSACTIONS 2009-12-02 22:07:25 -08:00
tunnel4.c net: constify struct net_protocol 2009-09-14 17:03:01 -07:00
udp_impl.h net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
udp.c net/ipv4: Move && and || to end of previous line 2009-11-23 10:41:23 -08:00
udplite.c net: drop capability from protocol definitions 2009-11-05 21:40:17 -08:00
xfrm4_input.c net: skb->dst accessors 2009-06-03 02:51:04 -07:00
xfrm4_mode_beet.c ipsec: Interfamily IPSec BEET 2008-08-06 02:39:30 -07:00
xfrm4_mode_transport.c [IPSEC]: Use IPv6 calling convention as the convention for x->mode->output 2007-10-10 16:55:54 -07:00
xfrm4_mode_tunnel.c net: skb->dst accessors 2009-06-03 02:51:04 -07:00
xfrm4_output.c net: skb->dst accessors 2009-06-03 02:51:04 -07:00
xfrm4_policy.c xfrm4: fix build when SYSCTLs are disabled 2009-08-04 20:18:33 -07:00
xfrm4_state.c xfrm: remove useless forward declarations 2008-11-25 01:05:54 -08:00
xfrm4_tunnel.c [IPCOMP]: Fix reception of incompressible packets 2008-01-31 19:27:24 -08:00