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Eric Dumazet 3cdaedae63 tcp: Fix a connect() race with timewait sockets 
When we find a timewait connection in __inet_hash_connect() and reuse
it for a new connection request, we have a race window, releasing bind
list lock and reacquiring it in __inet_twsk_kill() to remove timewait
socket from list.

Another thread might find the timewait socket we already chose, leading to
list corruption and crashes.

Fix is to remove timewait socket from bind list before releasing the bind lock.

Note: This problem happens if sysctl_tcp_tw_reuse is set.

Reported-by: kapil dakhane <kdakhane@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2009-12-08 20:17:51 -08:00
..
9p 9p: fix readdir corner cases 2009-11-02 08:43:45 -06:00
bluetooth Bluetooth: Implement RejActioned flag 2009-12-03 19:34:24 +01:00
irda net: mark read-only arrays as const 2009-08-05 10:42:58 -07:00
iucv af_iucv: Return -EAGAIN if iucv msg limit is exceeded 2009-06-19 00:10:40 -07:00
netfilter Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-11-06 00:55:55 -08:00
netns net: Allow xfrm_user_net_exit to batch efficiently. 2009-12-03 12:22:03 -08:00
phonet Phonet: convert devices list to RCU 2009-11-18 10:08:26 -08:00
sctp Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-11-29 00:57:15 -08:00
tc_act pkt_sched: skbedit add support for setting mark 2009-10-22 21:56:42 -07:00
tipc
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act_api.h net: restore gnet_stats_basic to previous definition 2009-08-17 21:33:49 -07:00
addrconf.h bonding: remap muticast addresses without using dev_close() and dev_open() 2009-09-15 02:37:40 -07:00
af_ieee802154.h af_ieee802154: add support for WANT_ACK socket option 2009-08-12 21:54:50 -07:00
af_rxrpc.h
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af_unix.h
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ah.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
arp.h net: make neigh_ops constant 2009-09-01 17:40:57 -07:00
atmclip.h
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ax25.h
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ax88796.h
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cfg80211.h nl80211: PMKSA caching support 2009-11-28 15:05:05 -05:00
checksum.h
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cipso_ipv4.h
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compat.h net: Avoid compiler warning for mmsghdr when CONFIG_COMPAT is not selected 2009-10-20 01:09:17 -07:00
datalink.h
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dcbnl.h dcbnl: Add support for setapp/getapp to netdev dcbnl_rtnl_ops 2009-09-01 01:24:30 -07:00
dn.h
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dn_dev.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-12-08 07:55:01 -08:00
dn_fib.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
dn_neigh.h
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dn_nsp.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
dn_route.h
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dsa.h
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dsfield.h
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dst.h tcp: Use defaults when no route options are available 2009-11-04 23:24:15 -08:00
dst_ops.h netns: embed ip6_dst_ops directly 2009-09-01 17:40:31 -07:00
esp.h
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ethoc.h
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fib_rules.h net: Allow fib_rule_unregister to batch 2009-12-03 12:22:55 -08:00
flow.h
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garp.h
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gen_stats.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
genetlink.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
icmp.h
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ieee80211_radiotap.h mac80211: fix radiotap header generation 2009-10-30 16:49:20 -04:00
ieee802154.h ieee802154: move headers out of extra directory 2009-07-23 17:08:51 +04:00
ieee802154_netdev.h ieee802154: add an mlme_ops call to retrieve PHY object 2009-11-06 14:32:18 +03:00
if_inet6.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
inet6_connection_sock.h
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inet6_hashtables.h tcp: Fix a connect() race with timewait sockets 2009-12-08 20:17:51 -08:00
inet_common.h
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inet_connection_sock.h net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
inet_ecn.h
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inet_frag.h
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inet_hashtables.h tcp: Fix a connect() race with timewait sockets 2009-12-08 20:17:51 -08:00
inet_sock.h inet: rename some inet_sock fields 2009-10-18 18:52:53 -07:00
inet_timewait_sock.h tcp: Fix a connect() race with timewait sockets 2009-12-08 20:17:51 -08:00
inetpeer.h inetpeer: Optimize inet_getid() 2009-11-13 20:46:58 -08:00
ip.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
ip6_checksum.h
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ip6_fib.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
ip6_route.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
ip6_tunnel.h
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ip_fib.h Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-11-06 00:55:55 -08:00
ip_vs.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
ipcomp.h
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ipconfig.h
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ipip.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
ipv6.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
ipx.h
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iw_handler.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
lapb.h
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lib80211.h
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llc.h
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llc_c_ac.h
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llc_c_ev.h
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llc_c_st.h
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llc_conn.h
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llc_if.h
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llc_pdu.h
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llc_s_ac.h
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llc_s_ev.h
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llc_s_st.h
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llc_sap.h
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mac80211.h Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2009-12-04 13:25:15 -08:00
mip6.h
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ndisc.h sysctl: remove "struct file *" argument of ->proc_handler 2009-09-24 07:21:04 -07:00
neighbour.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-12-08 07:55:01 -08:00
net_namespace.h net: Add support for batching network namespace cleanups 2009-12-03 12:22:01 -08:00
netdma.h
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netevent.h
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netlabel.h
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netlink.h netlink: constify nlmsghdr arguments 2009-08-25 16:07:40 +02:00
netrom.h
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nexthop.h
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nl802154.h ieee802154: add support for channel pages from IEEE 802.15.4-2006 2009-08-19 23:08:22 +04:00
p8022.h
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pkt_cls.h net: rename skb->iif to skb->skb_iif 2009-11-20 15:35:04 -08:00
pkt_sched.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
protocol.h net: drop capability from protocol definitions 2009-11-05 21:40:17 -08:00
psnap.h
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raw.h
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rawv6.h ipv6: Use correct data types for ICMPv6 type and code 2009-06-23 04:31:07 -07:00
red.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
regulatory.h
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request_sock.h TCPCT part 1a: add request_values parameter for sending SYNACK 2009-12-02 22:07:23 -08:00
rose.h NET: ROSE: Don't use static buffer. 2009-07-26 19:11:14 -07:00
route.h net: NETDEV_UNREGISTER_PERNET -> NETDEV_UNREGISTER_BATCH 2009-12-01 16:15:50 -08:00
rtnetlink.h net: Support specifying the network namespace upon device creation. 2009-11-08 00:53:51 -08:00
sch_generic.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
scm.h net: cleanup include/net 2009-11-04 05:06:25 -08:00
slhc_vj.h
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snmp.h
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sock.h udp: secondary hash on (local port, local address) 2009-11-08 20:53:06 -08:00
stp.h
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tcp.h tcp: clear hints to avoid a stale one (nfs only affected?) 2009-12-02 22:24:02 -08:00
tcp_states.h
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timewait_sock.h
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transp_v6.h inet: inet_connection_sock_af_ops const 2009-09-02 01:03:49 -07:00
udp.h udp: bind() optimisation 2009-11-10 20:54:38 -08:00
udplite.h
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wext.h wext: refactor 2009-10-07 16:39:43 -04:00
wimax.h wimax/i2400m: clarify and fix i2400m->{ready,updown} 2009-10-19 15:56:07 +09:00
wpan-phy.h ieee802154: add support for creation/removal of logic interfaces 2009-11-06 14:32:24 +03:00
x25.h X25: Move SYSCTL ifdefs into header 2009-11-29 00:24:59 -08:00
x25device.h
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xfrm.h xfrm: Store aalg in xfrm_state with a user specified truncation length 2009-11-25 15:48:38 -08:00