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Srinivas Aji b40b4f79ce [TCP]: zero out rx_opt in tcp_disconnect() 
When the server drops its connection, NFS client reconnects using the
same socket after disconnecting. If the new connection's SYN,ACK
doesn't contain the TCP timestamp option and the old connection's did,
tp->tcp_header_len is recomputed assuming no timestamp header but
tp->rx_opt.tstamp_ok remains set. Then tcp_build_and_update_options()
adds in a timestamp option past the end of the allocated TCP header,
overwriting TCP data, or when the data is in skb_shinfo(skb)->frags[],
overwriting skb_shinfo(skb) causing a crash soon after. (The issue was
debugged from such a crash.)

Similarly, wscale_ok and sack_ok also get set based on the SYN,ACK
packet but not reset on disconnect, since they are zeroed out at
initialization. The patch zeroes out the entire tp->rx_opt struct in
tcp_disconnect() to avoid this sort of problem.

Signed-off-by: Srinivas Aji <Aji_Srinivas@emc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2007-05-03 17:32:28 -07:00
..
ipvs [NET]: Treat CHECKSUM_PARTIAL as CHECKSUM_UNNECESSARY 2007-04-25 22:28:43 -07:00
netfilter [NETFILTER]: sip: Fix RTP address NAT 2007-05-03 03:35:31 -07:00
Kconfig [TCP]: TCP Illinois congestion control (rev3) 2007-04-25 22:29:23 -07:00
Makefile [IPV4]: Consolidate common SNMP code 2007-04-25 22:29:51 -07:00
af_inet.c [IPV4]: Consolidate common SNMP code 2007-04-25 22:29:51 -07:00
ah4.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
arp.c [SK_BUFF]: Introduce arp_hdr(), remove skb->nh.arph 2007-04-25 22:25:12 -07:00
cipso_ipv4.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6 2007-04-27 10:47:29 -07:00
datagram.c
…
devinet.c [NET]: Rework dev_base via list_head (v3) 2007-05-03 15:13:45 -07:00
esp4.c [XFRM]: beet: fix worst case header_len calculation 2007-04-25 22:28:39 -07:00
fib_frontend.c [IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res) 2007-04-27 02:17:19 -07:00
fib_hash.c [NET]: make seq_operations const 2007-04-25 22:25:03 -07:00
fib_lookup.h
…
fib_rules.c [NET] fib_rules: delay route cache flush by ip_rt_min_delay 2007-04-25 22:28:24 -07:00
fib_semantics.c [NET]: cleanup extra semicolons 2007-04-25 22:29:24 -07:00
fib_trie.c [IPV4]: fib_trie root node settings 2007-04-25 22:26:32 -07:00
icmp.c [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
igmp.c [NET]: Rework dev_base via list_head (v3) 2007-05-03 15:13:45 -07:00
inet_connection_sock.c
…
inet_diag.c [NETLINK]: Switch cb_lock spinlock to mutex and allow to override it 2007-04-25 22:29:03 -07:00
inet_hashtables.c
…
inet_timewait_sock.c
…
inetpeer.c [IPV4]: Optimize inet_getpeer() 2007-04-25 22:23:49 -07:00
ip_forward.c [NET]: Allow forwarding of ip_summed except CHECKSUM_COMPLETE 2007-04-25 22:28:16 -07:00
ip_fragment.c [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph 2007-04-25 22:25:10 -07:00
ip_gre.c [IPV4] IP_GRE: Unify code path to get hash array index. 2007-04-25 22:29:56 -07:00
ip_input.c [IPV4] SNMP: Support InMcastPkts and InBcastPkts 2007-04-30 00:58:29 -07:00
ip_options.c [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph 2007-04-25 22:25:10 -07:00
ip_output.c [IPV4] SNMP: Support OutMcastPkts and OutBcastPkts 2007-04-30 00:58:32 -07:00
ip_sockglue.c [INET]: Add IP(V6)_PMTUDISC_RPOBE 2007-04-25 22:29:10 -07:00
ipcomp.c [SK_BUFF]: Introduce skb_copy_to_linear_data{_offset} 2007-04-25 22:28:29 -07:00
ipconfig.c [NET]: Rework dev_base via list_head (v3) 2007-05-03 15:13:45 -07:00
ipip.c [IPV4] IPIP: Unify code path to get hash array index. 2007-04-25 22:29:55 -07:00
ipmr.c [SK_BUFF]: Introduce skb_copy_to_linear_data{_offset} 2007-04-25 22:28:29 -07:00
multipath.c
…
multipath_drr.c [NET]: cleanup extra semicolons 2007-04-25 22:29:24 -07:00
multipath_random.c [IPV4]: Use random32() in net/ipv4/multipath 2007-02-26 11:43:00 -08:00
multipath_rr.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
multipath_wrandom.c [IPV4]: Use random32() in net/ipv4/multipath 2007-02-26 11:43:00 -08:00
netfilter.c [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph 2007-04-25 22:25:10 -07:00
proc.c [IPV4]: Consolidate common SNMP code 2007-04-25 22:29:51 -07:00
protocol.c [IPV4]: align inet_protos[] on SMP 2007-04-25 22:28:20 -07:00
raw.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
route.c [IPV4] LVS: Allow to send ICMP unreachable responses when real-servers are removed 2007-04-25 22:28:15 -07:00
syncookies.c [SK_BUFF]: Introduce tcp_hdr(), remove skb->h.th 2007-04-25 22:25:26 -07:00
sysctl_net_ipv4.c [TCP]: Add two new spurious RTO responses to FRTO 2007-04-25 22:23:23 -07:00
tcp.c [TCP]: zero out rx_opt in tcp_disconnect() 2007-05-03 17:32:28 -07:00
tcp_bic.c [TCP]: Congestion control API update. 2007-04-25 22:29:45 -07:00
tcp_cong.c [TCP]: Congestion control API update. 2007-04-25 22:29:45 -07:00
tcp_cubic.c [TCP]: Congestion control API update. 2007-04-25 22:29:45 -07:00
tcp_diag.c
…
tcp_highspeed.c [TCP] Highspeed: Limited slow-start is nowadays in tcp_slow_start 2007-05-03 13:28:35 -07:00
tcp_htcp.c [TCP]: Congestion control API update. 2007-04-25 22:29:45 -07:00
tcp_hybla.c [TCP]: whitespace cleanup 2007-04-25 22:24:13 -07:00
tcp_illinois.c [TCP]: Fix linkage errors on i386. 2007-04-25 22:29:49 -07:00
tcp_input.c [TCP] FRTO: RFC4138 allows Nagle override when new data must be sent 2007-04-30 00:58:16 -07:00
tcp_ipv4.c [NET]: Treat CHECKSUM_PARTIAL as CHECKSUM_UNNECESSARY 2007-04-25 22:28:43 -07:00
tcp_lp.c [TCP]: Fix linkage errors on i386. 2007-04-25 22:29:49 -07:00
tcp_minisocks.c [SK_BUFF]: Introduce tcp_hdr(), remove skb->h.th 2007-04-25 22:25:26 -07:00
tcp_output.c [TCP] FRTO: RFC4138 allows Nagle override when new data must be sent 2007-04-30 00:58:16 -07:00
tcp_probe.c [TCP] tcp_probe: improvements for net-2.6.22 2007-04-25 22:28:10 -07:00
tcp_scalable.c
…
tcp_timer.c [TCP]: Abstract out all write queue operations. 2007-04-25 22:24:02 -07:00
tcp_vegas.c [TCP]: Fix linkage errors on i386. 2007-04-25 22:29:49 -07:00
tcp_vegas.h [TCP] TCP YEAH: Use vegas dont copy it. 2007-04-25 22:29:46 -07:00
tcp_veno.c [TCP]: Fix linkage errors on i386. 2007-04-25 22:29:49 -07:00
tcp_westwood.c [TCP]: Congestion control API update. 2007-04-25 22:29:45 -07:00
tcp_yeah.c [TCP] TCP YEAH: Use vegas dont copy it. 2007-04-25 22:29:46 -07:00
tunnel4.c [IPSEC]: Changing API of xfrm4_tunnel_register. 2007-02-13 12:54:47 -08:00
udp.c [UDP]: Do not allow specific bind when wildcard bind exists. 2007-04-30 14:51:58 -07:00
udp_impl.h
…
udplite.c [UDP]: Clean up UDP-Lite receive checksum 2007-04-25 22:23:51 -07:00
xfrm4_input.c [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph 2007-04-25 22:25:10 -07:00
xfrm4_mode_beet.c [XFRM]: beet: fix worst case header_len calculation 2007-04-25 22:28:39 -07:00
xfrm4_mode_transport.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
xfrm4_mode_tunnel.c [SK_BUFF]: unions of just one member don't get anything done, kill them 2007-04-25 22:26:20 -07:00
xfrm4_output.c [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph 2007-04-25 22:25:10 -07:00
xfrm4_policy.c [NET]: cleanup extra semicolons 2007-04-25 22:29:24 -07:00
xfrm4_state.c
…
xfrm4_tunnel.c [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph 2007-04-25 22:25:10 -07:00