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Eric Dumazet d23270aae3 net: introduce DST_NOPEER dst flag 
[ Upstream commit e688a60480 ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-06 14:17:31 -08:00
..
9p
fs/9p: Use protocol-defined value for lock/getlock 'type' field.
2011-09-06 08:17:16 -05:00
bluetooth
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
2011-07-15 10:05:24 -04:00
caif
caif: Add CAIF HSI Link layer driver
2011-06-01 21:15:38 -07:00
irda
Fix common misspellings
2011-03-31 11:26:23 -03:00
iucv
Fix common misspellings
2011-03-31 11:26:23 -03:00
netfilter
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
netns
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
phonet
net: dont hold rtnl mutex during netlink dump callbacks
2011-05-02 15:26:28 -07:00
sctp
sctp: fix incorrect overflow check on autoclose
2012-01-06 14:17:28 -08:00
tc_act
net/sched: add ACT_CSUM action to update packets checksums
2010-08-20 01:42:59 -07:00
act_api.h
net: sched: constify tcf_proto and tc_action
2011-07-06 02:52:16 -07:00
addrconf.h
net: Remove __KERNEL__ cpp checks from include/net
2011-04-24 10:54:56 -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
net: Remove __KERNEL__ cpp checks from include/net
2011-04-24 10:54:56 -07:00
af_unix.h
net: Remove __KERNEL__ cpp checks from include/net
2011-04-24 10:54:56 -07:00
ah.h
ipsec: update MAX_AH_AUTH_LEN to support sha512
2011-01-13 21:48:25 -08:00
arp.h
net: Add ->neigh_lookup() operation to dst_ops
2011-07-18 00:40:17 -07:00
atmclip.h
net: Remove __KERNEL__ cpp checks from include/net
2011-04-24 10:54:56 -07:00
ax25.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
ax88796.h
ax88796: Add method to take MAC from platform data
2009-03-24 23:32:03 -07:00
cfg80211.h
wireless: fix kernel-doc warning in net/cfg80211.h
2011-09-08 14:43:03 -07:00
checksum.h
include/net net/ - csum_partial - remove unnecessary casts
2008-11-19 15:44:53 -08:00
cipso_ipv4.h
doc: Update the email address for Paul Moore in various source files
2011-08-01 17:58:33 -07:00
cls_cgroup.h
Merge commit 'v2.6.36-rc7' into core/rcu
2010-10-07 09:43:45 +02:00
compat.h
net: Add sendmmsg socket system call
2011-05-05 11:10:14 -07:00
datalink.h
[NET]: Kill skb->real_dev
2005-08-29 15:32:25 -07:00
dcbevent.h
net_dcb: add application notifiers
2010-12-31 10:47:46 -08:00
dcbnl.h
dcbnl: Add CEE notification
2011-07-05 23:42:17 -07:00
dn_dev.h
decnet: RCU conversion and get rid of dev_base_lock
2010-11-08 13:50:08 -08:00
dn_fib.h
decnet: Convert to use flowidn where applicable.
2011-03-12 15:08:55 -08:00
dn_neigh.h
[DECnet]: Endian annotation and fixes for DECnet.
2006-03-20 22:42:39 -08:00
dn_nsp.h
net: use __packed annotation
2010-06-03 03:21:52 -07:00
dn_route.h
decnet: Convert to use flowidn where applicable.
2011-03-12 15:08:55 -08:00
dn.h
decnet: Convert to use flowidn where applicable.
2011-03-12 15:08:55 -08:00
dsa.h
dsa: add switch chip cascading support
2009-03-21 19:06:54 -07:00
dsfield.h
[NET]: Constify include/net/dsfield.h
2008-01-28 14:55:58 -08:00
dst_ops.h
net: Add ->neigh_lookup() operation to dst_ops
2011-07-18 00:40:17 -07:00
dst.h
net: introduce DST_NOPEER dst flag
2012-01-06 14:17:31 -08:00
esp.h
[IPSEC]: Use crypto_aead and authenc in ESP
2008-01-31 19:27:02 -08:00
ethoc.h
net: Add support for the OpenCores 10/100 Mbps Ethernet MAC.
2009-03-27 00:16:21 -07:00
fib_rules.h
fib_rules: __rcu annotates ctarget
2010-10-27 11:37:32 -07:00
flow.h
net: Add a flow_cache_flush_deferred function
2012-01-06 14:17:29 -08:00
garp.h
garp: remove last synchronize_rcu() call
2011-05-12 17:46:56 -04:00
gen_stats.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
genetlink.h
netlink: advertise incomplete dumps
2011-06-22 16:09:45 -04:00
gre.h
PPTP: PPP over IPv4 (Point-to-Point Tunneling Protocol)
2010-08-21 23:05:39 -07:00
icmp.h
inetpeer: Move ICMP rate limiting state into inet_peer entries.
2011-02-04 15:59:53 -08:00
ieee80211_radiotap.h
mac80211: add MCS information to radiotap
2011-01-28 15:44:29 -05:00
ieee802154_netdev.h
ieee802154: add an mlme_ops call to retrieve PHY object
2009-11-06 14:32:18 +03:00
ieee802154.h
ieee802154: move headers out of extra directory
2009-07-23 17:08:51 +04:00
if_inet6.h
ipv6: reduce per device ICMP mib sizes
2011-05-19 16:21:22 -04:00
inet6_connection_sock.h
inet: Pass flowi to ->queue_xmit().
2011-05-08 15:28:28 -07:00
inet6_hashtables.h
tcp: Fix a connect() race with timewait sockets
2009-12-08 20:17:51 -08:00
inet_common.h
inet, inet6: make tcp_sendmsg() and tcp_sendpage() through inet_sendmsg() and inet_sendpage()
2010-07-12 20:21:46 -07:00
inet_connection_sock.h
ipv4: Make caller provide flowi4 key to inet_csk_route_req().
2011-05-18 18:32:03 -04:00
inet_ecn.h
ipv6: restore correct ECN handling on TCP xmit
2011-05-12 18:52:14 -04:00
inet_frag.h
fragment: add fast path for in-order fragments
2010-06-30 13:44:29 -07:00
inet_hashtables.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
inet_sock.h
ipv4: route non-local sources for raw socket
2011-08-07 22:52:32 -07:00
inet_timewait_sock.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
inetpeer.h
inet: add a redirect generation id in inetpeer
2011-12-09 08:56:07 -08:00
ip6_checksum.h
[IPV6]: Dumb typo in generic csum_ipv6_magic()
2006-12-22 11:12:07 -08:00
ip6_fib.h
ipv6: Get rid of rt6i_nexthop macro.
2011-07-17 23:11:35 -07:00
ip6_route.h
net: Remove __KERNEL__ cpp checks from include/net
2011-04-24 10:54:56 -07:00
ip6_tunnel.h
tunnels: add _rcu annotations
2010-10-25 13:09:45 -07:00
ip_fib.h
ipv4: Call fib_select_default() only when actually necessary.
2011-04-14 15:05:22 -07:00
ip_vs.h
IPVS netns shutdown/startup dead-lock
2011-10-12 18:32:15 +02:00
ip.h
ipv4: Add ip_defrag() agent IP_DEFRAG_AF_PACKET.
2011-07-05 22:34:52 -07:00
ipcomp.h
percpu: add __percpu sparse annotations to net
2010-02-16 23:05:38 -08:00
ipconfig.h
net: remove CVS keywords
2008-06-11 21:00:38 -07:00
ipip.h
tunnels: add __rcu annotations
2010-10-27 11:37:32 -07:00
ipv6.h
ipv6: make fragment identifications less predictable
2011-07-21 21:25:58 -07:00
ipx.h
net: Remove __KERNEL__ cpp checks from include/net
2011-04-24 10:54:56 -07:00
iw_handler.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
lapb.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
lib80211.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
llc_c_ac.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
llc_c_ev.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
llc_c_st.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
llc_conn.h
llc: use a device based hash table to speed up multicast delivery
2009-12-26 20:43:57 -08:00
llc_if.h
[LLC]: Kill static inline llc_addrany
2008-02-29 11:46:17 -08:00
llc_pdu.h
bonding,llc: Fix structure sizeof incompatibility for some PDUs
2011-05-13 15:13:24 -04:00
llc_s_ac.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
llc_s_ev.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
llc_s_st.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
llc_sap.h
[LLC]: skb allocation size for responses
2008-03-31 21:02:47 -07:00
llc.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
mac80211.h
mac80211: sync driver before TX
2011-07-20 15:04:35 -04:00
mip6.h
net: use __packed annotation
2010-06-03 03:21:52 -07:00
mld.h
ipv6 mcast: Introduce include/net/mld.h for MLD definitions.
2010-04-23 13:35:55 +09:00
ndisc.h
net: Remove __KERNEL__ cpp checks from include/net
2011-04-24 10:54:56 -07:00
neighbour.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
net_namespace.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
net_ratelimit.h
net: Kill ratelimit.h dependency in linux/net.h
2011-05-27 13:41:33 -04:00
netdma.h
net_dma: convert to dma_find_channel
2009-01-06 11:38:15 -07:00
netevent.h
net: Remove __KERNEL__ cpp checks from include/net
2011-04-24 10:54:56 -07:00
netlabel.h
doc: Update the email address for Paul Moore in various source files
2011-08-01 17:58:33 -07:00
netlink.h
netlink: advertise incomplete dumps
2011-06-22 16:09:45 -04:00
netrom.h
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
nexthop.h
[IPv4]: FIB configuration using struct fib_config
2006-09-22 14:55:04 -07:00
nfc.h
NFC: add nfc generic netlink interface
2011-07-05 15:26:57 -04:00
nl802154.h
ieee802154: add support for channel pages from IEEE 802.15.4-2006
2009-08-19 23:08:22 +04:00
p8022.h
[NET]: Fix sparse warnings
2005-08-29 16:01:32 -07:00
ping.h
net: ping: fix build failure
2011-05-17 14:16:58 -04:00
pkt_cls.h
net: Fix range checks in tcf_valid_offset().
2010-12-21 12:43:16 -08:00
pkt_sched.h
net: sched: constify tcf_proto and tc_action
2011-07-06 02:52:16 -07:00
protocol.h
net: change netdev->features to u32
2011-01-24 15:32:47 -08:00
psnap.h
snap: use const for descriptor
2009-03-21 19:06:50 -07:00
raw.h
include/net/raw.h: Convert raw_seq_private macro to inline
2010-09-08 13:42:22 -07:00
rawv6.h
net: Remove __KERNEL__ cpp checks from include/net
2011-04-24 10:54:56 -07:00
red.h
sch_red: fix red_calc_qavg_from_idle_time
2011-12-09 08:56:08 -08:00
regulatory.h
cfg80211: Fix regulatory bug with multiple cards and delays
2010-11-22 15:48:51 -05:00
request_sock.h
tcp: Change possible SYN flooding messages
2011-09-15 14:49:43 -04:00
rose.h
rose: Add length checks to CALL_REQUEST parsing
2011-03-27 17:59:04 -07:00
route.h
ipv4: Pass explicit destination address to rt_bind_peer().
2011-05-18 18:42:43 -04:00
rtnetlink.h
rtnetlink: Compute and store minimum ifinfo dump size
2011-06-09 20:38:07 -07:00
sch_generic.h
net: sched: constify tcf_proto and tc_action
2011-07-06 02:52:16 -07:00
scm.h
scm: lower SCM_MAX_FD
2010-11-24 11:16:43 -08:00
secure_seq.h
net: Compute protocol sequence numbers and fragment IDs using MD5.
2011-08-06 18:33:19 -07:00
slhc_vj.h
[NET]: Remove __ARGS from include/net/slhc_vj.h
2005-07-05 15:12:04 -07:00
snmp.h
snmp: reduce percpu needs by 50%
2011-06-11 16:23:59 -07:00
sock.h
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2011-07-25 13:56:39 -07:00
stp.h
net: Add STP demux layer
2008-07-05 21:25:39 -07:00
tcp_states.h
[TCP]: Move the TCPF_ enum to tcp_states.h
2006-01-03 13:10:57 -08:00
tcp.h
tcp: fix build error if !CONFIG_SYN_COOKIES
2011-09-18 21:48:01 -04:00
timewait_sock.h
timewait_sock: Create and use getpeer op.
2010-12-01 18:09:13 -08:00
transp_v6.h
net: relax PKTINFO non local ipv6 udp xmit check
2011-08-30 17:39:01 -04:00
udp.h
udp: Switch to ip_finish_skb
2011-03-01 12:35:03 -08:00
udplite.h
udplite: fast-path computation of checksum coverage
2011-10-17 19:07:30 -04:00
wext.h
wext: refactor
2009-10-07 16:39:43 -04:00
wimax.h
net: wimax: Remove of unused 'rfkill_input' pointer
2011-06-24 17:50:44 -07:00
wpan-phy.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
x25.h
X25 remove bkl in subscription ioctls
2010-11-28 11:12:20 -08:00
x25device.h
X25: Add if_x25.h and x25 to device identifiers
2010-04-22 16:12:36 -07:00
xfrm.h
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-3.6
2011-05-11 14:26:58 -04:00