Eric Dumazet e688a60480 net: introduce DST_NOPEER dst flag ... Chris Boot reported crashes occurring in ipv6_select_ident(). [ 461.457562] RIP: 0010:[<ffffffff812dde61>] [<ffffffff812dde61>] ipv6_select_ident+0x31/0xa7 [ 461.578229] Call Trace: [ 461.580742] <IRQ> [ 461.582870] [<ffffffff812efa7f>] ? udp6_ufo_fragment+0x124/0x1a2 [ 461.589054] [<ffffffff812dbfe0>] ? ipv6_gso_segment+0xc0/0x155 [ 461.595140] [<ffffffff812700c6>] ? skb_gso_segment+0x208/0x28b [ 461.601198] [<ffffffffa03f236b>] ? ipv6_confirm+0x146/0x15e [nf_conntrack_ipv6] [ 461.608786] [<ffffffff81291c4d>] ? nf_iterate+0x41/0x77 [ 461.614227] [<ffffffff81271d64>] ? dev_hard_start_xmit+0x357/0x543 [ 461.620659] [<ffffffff81291cf6>] ? nf_hook_slow+0x73/0x111 [ 461.626440] [<ffffffffa0379745>] ? br_parse_ip_options+0x19a/0x19a [bridge] [ 461.633581] [<ffffffff812722ff>] ? dev_queue_xmit+0x3af/0x459 [ 461.639577] [<ffffffffa03747d2>] ? br_dev_queue_push_xmit+0x72/0x76 [bridge] [ 461.646887] [<ffffffffa03791e3>] ? br_nf_post_routing+0x17d/0x18f [bridge] [ 461.653997] [<ffffffff81291c4d>] ? nf_iterate+0x41/0x77 [ 461.659473] [<ffffffffa0374760>] ? br_flood+0xfa/0xfa [bridge] [ 461.665485] [<ffffffff81291cf6>] ? nf_hook_slow+0x73/0x111 [ 461.671234] [<ffffffffa0374760>] ? br_flood+0xfa/0xfa [bridge] [ 461.677299] [<ffffffffa0379215>] ? nf_bridge_update_protocol+0x20/0x20 [bridge] [ 461.684891] [<ffffffffa03bb0e5>] ? nf_ct_zone+0xa/0x17 [nf_conntrack] [ 461.691520] [<ffffffffa0374760>] ? br_flood+0xfa/0xfa [bridge] [ 461.697572] [<ffffffffa0374812>] ? NF_HOOK.constprop.8+0x3c/0x56 [bridge] [ 461.704616] [<ffffffffa0379031>] ? nf_bridge_push_encap_header+0x1c/0x26 [bridge] [ 461.712329] [<ffffffffa037929f>] ? br_nf_forward_finish+0x8a/0x95 [bridge] [ 461.719490] [<ffffffffa037900a>] ? nf_bridge_pull_encap_header+0x1c/0x27 [bridge] [ 461.727223] [<ffffffffa0379974>] ? br_nf_forward_ip+0x1c0/0x1d4 [bridge] [ 461.734292] [<ffffffff81291c4d>] ? nf_iterate+0x41/0x77 [ 461.739758] [<ffffffffa03748cc>] ? __br_deliver+0xa0/0xa0 [bridge] [ 461.746203] [<ffffffff81291cf6>] ? nf_hook_slow+0x73/0x111 [ 461.751950] [<ffffffffa03748cc>] ? __br_deliver+0xa0/0xa0 [bridge] [ 461.758378] [<ffffffffa037533a>] ? NF_HOOK.constprop.4+0x56/0x56 [bridge] This is caused by bridge netfilter special dst_entry (fake_rtable), a special shared entry, where attaching an inetpeer makes no sense. Problem is present since commit 87c48fa3b4 (ipv6: make fragment identifications less predictable) Introduce DST_NOPEER dst flag and make sure ipv6_select_ident() and __ip_select_ident() fallback to the 'no peer attached' handling. Reported-by: Chris Boot <bootc@bootc.net> Tested-by: Chris Boot <bootc@bootc.net> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2011-12-22 22:34:56 -05:00
..
netfilter	netfilter: Remove NOTRACK/RAW dependency on NETFILTER_ADVANCED.	2011-11-23 16:07:00 -05:00
addrconf.c	ipv6: Fix for adding multicast route for loopback device automatically.	2011-12-12 18:48:18 -05:00
addrconf_core.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
addrlabel.c	rtnetlink: Compute and store minimum ifinfo dump size	2011-06-09 20:38:07 -07:00
af_inet6.c	gro: refetch inet6_protos[] after pulling ext headers	2011-10-10 14:26:16 -04:00
ah6.c	ah: Don't return NET_XMIT_DROP on input.	2011-11-12 18:13:32 -05:00
anycast.c	inet: constify ip headers and in6_addr	2011-04-22 11:04:14 -07:00
datagram.c	ipv6: Remove superfluous NULL pointer check in ipv6_local_rxpmtu	2011-10-18 23:51:30 -04:00
esp6.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-05-05 14:59:02 -07:00
exthdrs.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
exthdrs_core.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
fib6_rules.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
icmp.c	net: more accurate skb truesize	2011-10-13 16:05:07 -04:00
inet6_connection_sock.c	ipv6: tcp: fix panic in SYN processing	2011-11-23 15:49:31 -05:00
inet6_hashtables.c	net: Compute protocol sequence numbers and fragment IDs using MD5.	2011-08-06 18:33:19 -07:00
ip6_fib.c	cleanup: remove unnecessary include.	2011-10-19 19:26:16 -04:00
ip6_flowlabel.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
ip6_input.c	ipv6: drop packets when source address is multicast	2011-11-08 12:37:06 -05:00
ip6_output.c	net: introduce DST_NOPEER dst flag	2011-12-22 22:34:56 -05:00
ip6_tunnel.c	ip6_tunnel: copy parms.name after register_netdevice	2011-11-14 00:24:06 -05:00
ip6mr.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
ipcomp6.c	inet: constify ip headers and in6_addr	2011-04-22 11:04:14 -07:00
ipv6_sockglue.c	ipv6: Set mcast_hops to IPV6_DEFAULT_MCASTHOPS when -1 was given.	2011-11-28 18:09:13 -05:00
Kconfig	ipv6: ip6mr: support multiple tables	2010-05-11 14:40:55 +02:00
Makefile
mcast.c	mcast: Fix source address selection for multicast listener report	2011-08-24 17:46:15 -07:00
mip6.c	inet: constify ip headers and in6_addr	2011-04-22 11:04:14 -07:00
ndisc.c	ipv6: fix a bug in ndisc_send_redirect	2011-11-23 03:51:54 -05:00
netfilter.c	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
proc.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
protocol.c	net: add __rcu annotations to protocol	2010-10-27 11:37:31 -07:00
raw.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
reassembly.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
route.c	ipv6: Check dest prefix length on original route not copied one in rt6_alloc_cow().	2011-12-13 17:35:06 -05:00
sit.c	ipip, sit: copy parms.name after register_netdevice	2011-12-12 18:50:51 -05:00
syncookies.c	tcp: add const qualifiers where possible	2011-10-21 05:22:42 -04:00
sysctl_net_ipv6.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
tcp_ipv6.c	ipv6: tcp: fix tcp_v6_conn_request()	2011-11-23 17:29:23 -05:00
tunnel6.c	tunnels: add _rcu annotations	2010-10-25 13:09:45 -07:00
udp.c	Revert "udp: remove redundant variable"	2011-12-01 14:12:55 -05:00
udp_impl.h	net: Make setsockopt() optlen be unsigned.	2009-09-30 16:12:20 -07:00
udplite.c	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -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	inet: constify ip headers and in6_addr	2011-04-22 11:04:14 -07:00
xfrm6_mode_ro.c
xfrm6_mode_transport.c
xfrm6_mode_tunnel.c	inet: constify ip headers and in6_addr	2011-04-22 11:04:14 -07:00
xfrm6_output.c	xfrm6: Don't call icmpv6_send on local error	2011-10-18 23:53:10 -04:00
xfrm6_policy.c	inet: constify ip headers and in6_addr	2011-04-22 11:04:14 -07:00
xfrm6_state.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
xfrm6_tunnel.c	ipv6: Fix return of xfrm6_tunnel_rcv()	2011-05-24 01:11:51 -04:00