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74b0b85b88
linux/net/ipv6
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Pavel Emelyanov 74b0b85b88 tunnels: Fix tunnels change rcu protection 
After making rcu protection for tunnels (ipip, gre, sit and ip6) a bug
was introduced into the SIOCCHGTUNNEL code.

The tunnel is first unlinked, then addresses change, then it is linked
back probably into another bucket. But while changing the parms, the
hash table is unlocked to readers and they can lookup the improper tunnel.

Respective commits are b7285b79 (ipip: get rid of ipip_lock), 1507850b
(gre: get rid of ipgre_lock), 3a43be3c (sit: get rid of ipip6_lock) and
94767632 (ip6tnl: get rid of ip6_tnl_lock).

The quick fix is to wait for quiescent state to pass after unlinking,
but if it is inappropriate I can invent something better, just let me
know.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-27 14:20:08 -07:00
..
netfilter netfilter: Add missing CONFIG_SYSCTL checks in ipv6's nf_conntrack_reasm.c 2010-10-26 09:08:53 -07:00
addrconf_core.c ipv6: Remove IPV6_ADDR_RESERVED 2010-02-26 03:59:07 -08:00
addrconf.c ipv6: fix refcnt problem related to POSTDAD state 2010-10-27 11:37:30 -07:00
addrlabel.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-09-27 01:03:03 -07:00
af_inet6.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2010-10-21 08:21:34 -07:00
ah6.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
anycast.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
datagram.c tproxy: added tproxy sockopt interface in the IPV6 layer 2010-10-21 16:08:28 +02:00
esp6.c xfrm: SA lookups signature with mark 2010-02-22 16:20:22 -08:00
exthdrs_core.c net: return operator cleanup 2010-09-23 14:33:39 -07:00
exthdrs.c ipv6: avoid two atomics in ipv6_rthdr_rcv() 2010-06-14 23:13:06 -07:00
fib6_rules.c fib6: use FIB_LOOKUP_NOREF in fib6_rule_lookup() 2010-10-16 11:13:21 -07:00
icmp.c ipv6: fix ICMP6_MIB_OUTERRORS 2010-06-09 18:39:27 -07:00
inet6_connection_sock.c ipv6: Refactor update of IPv6 flowi destination address for srcrt (RH) option 2010-06-02 07:08:31 -07:00
inet6_hashtables.c tcp: Fix a connect() race with timewait sockets 2009-12-08 20:17:51 -08:00
ip6_fib.c fib: avoid false sharing on fib_table_hash 2010-10-16 11:13:23 -07:00
ip6_flowlabel.c IPv6: Add dontfrag argument to relevant functions 2010-04-23 23:35:28 -07:00
ip6_input.c Merge branch 'master' of /repos/git/net-next-2.6 2010-04-20 16:02:01 +02:00
ip6_output.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-09-27 01:03:03 -07:00
ip6_tunnel.c tunnels: Fix tunnels change rcu protection 2010-10-27 14:20:08 -07:00
ip6mr.c net: add a core netdev->rx_dropped counter 2010-10-05 14:47:55 -07:00
ipcomp6.c xfrm: SA lookups signature with mark 2010-02-22 16:20:22 -08:00
ipv6_sockglue.c tproxy: Add missing CAP_NET_ADMIN check to ipv6 side 2010-10-24 16:07:50 -07:00
Kconfig ipv6: ip6mr: support multiple tables 2010-05-11 14:40:55 +02:00
Makefile
mcast.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
mip6.c IPv6: fix CoA check in RH2 input handler (mip6_rthdr_input()) 2010-07-18 15:04:33 -07:00
ndisc.c net neigh: RCU conversion of neigh hash table 2010-10-05 14:54:36 -07:00
netfilter.c netfilter: kill redundant check code in which setting ip_summed value 2010-06-14 16:20:02 +02:00
proc.c snmp: 64bit ipstats_mib for all arches 2010-06-30 13:31:19 -07:00
protocol.c net: add __rcu annotations to protocol 2010-10-27 11:37:31 -07:00
raw.c net: add __rcu annotation to sk_filter 2010-10-25 14:18:28 -07:00
reassembly.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-09-09 22:27:33 -07:00
route.c net dst: use a percpu_counter to track entries 2010-10-11 13:06:53 -07:00
sit.c tunnels: Fix tunnels change rcu protection 2010-10-27 14:20:08 -07:00
syncookies.c syncookies: add support for ECN 2010-06-26 22:00:03 -07:00
sysctl_net_ipv6.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
tcp_ipv6.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2010-10-21 08:21:34 -07:00
tunnel6.c tunnels: add _rcu annotations 2010-10-25 13:09:45 -07:00
udp_impl.h net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
udp.c net: add __rcu annotation to sk_filter 2010-10-25 14:18:28 -07:00
udplite.c net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
xfrm6_input.c netfilter: ipv6: use NFPROTO values for NF_HOOK invocation 2010-03-25 16:00:49 +01:00
xfrm6_mode_beet.c
xfrm6_mode_ro.c
xfrm6_mode_transport.c
xfrm6_mode_tunnel.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
xfrm6_output.c netfilter: ipv6: use NFPROTO values for NF_HOOK invocation 2010-03-25 16:00:49 +01:00
xfrm6_policy.c net dst: use a percpu_counter to track entries 2010-10-11 13:06:53 -07:00
xfrm6_state.c xfrm: Allow different selector family in temporary state 2010-09-20 11:11:38 -07:00
xfrm6_tunnel.c xfrm6: make xfrm6_tunnel_free_spi local 2010-10-21 03:09:45 -07:00