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linux-next/net/ipv6
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FX Le Bail d94c1f92bb ipv6: icmp6_send: fix Oops when pinging a not set up IPv6 peer on a sit tunnel 
The patch 446fab5933 ("ipv6: enable anycast addresses
as source addresses in ICMPv6 error messages") causes an Oops when pinging a not
set up IPv6 peer on a sit tunnel.

The problem is that ipv6_anycast_destination() uses unconditionally skb_dst(skb),
which is NULL in this case.

The solution is to use instead the ipv6_chk_acast_addr_src() function.

Here are the steps to reproduce it:
modprobe sit
ip link add sit1 type sit remote 10.16.0.121 local 10.16.0.249
ip l s sit1 up
ip -6 a a dev sit1 2001🔢:123 remote 2001🔢:121
ping6 2001🔢:121

Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Tested-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Francois-Xavier Le Bail <fx.lebail@yahoo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-09 18:12:40 -08:00
..
netfilter netfilter: nf_tables: add reject module for NFPROTO_INET 2014-02-06 09:44:18 +01:00
addrconf_core.c ipv6: move in6_dev_finish_destroy() into core kernel 2013-08-31 22:30:00 -04:00
addrconf.c ipv6: reallocate addrconf router for ipv6 address when lo device up 2014-01-24 15:59:38 -08:00
addrlabel.c ipv6: fix null pointer dereference in __ip6addrlbl_add 2013-09-04 14:14:53 -04:00
af_inet6.c ipv6: add flowlabel_consistency sysctl 2014-01-19 17:12:31 -08:00
ah6.c ipv4/ipv6: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00
anycast.c ipv6: enable anycast addresses as source addresses for datagrams 2014-01-22 21:57:05 -08:00
datagram.c ipv6: enable anycast addresses as source addresses for datagrams 2014-01-22 21:57:05 -08:00
esp6.c ipv4/ipv6: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00
exthdrs_core.c ipv6: Correct comparisons and calculations using skb->tail and skb-transport_header 2013-05-28 23:49:07 -07:00
exthdrs_offload.c ipv6: Pull IPv6 GSO registration out of the module 2012-11-15 17:39:24 -05:00
exthdrs.c ipv6/exthdrs: accept tlv which includes only padding 2013-09-11 15:52:27 -04:00
fib6_rules.c ipv6: move IPV6_TCLASS_SHIFT into ipv6.h and define a helper 2014-01-15 15:53:18 -08:00
icmp.c ipv6: icmp6_send: fix Oops when pinging a not set up IPv6 peer on a sit tunnel 2014-02-09 18:12:40 -08:00
inet6_connection_sock.c net: Remove FLOWI_FLAG_CAN_SLEEP 2013-12-06 07:24:39 +01:00
inet6_hashtables.c inet: convert inet_ehash_secret and ipv6_hash_secret to net_get_random_once 2013-10-19 19:45:35 -04:00
ip6_checksum.c ipv6: move csum_ipv6_magic() and udp6_csum_init() into static library 2013-01-08 17:56:10 -08:00
ip6_fib.c ipv6: remove prune parameter for fib6_clean_all 2014-01-02 03:30:35 -05:00
ip6_flowlabel.c ipv6: add flowlabel_consistency sysctl 2014-01-19 17:12:31 -08:00
ip6_gre.c ipv6: move IPV6_TCLASS_SHIFT into ipv6.h and define a helper 2014-01-15 15:53:18 -08:00
ip6_icmp.c ipv6: Kill ipv6 dependency of icmpv6_send(). 2013-04-29 13:54:36 -04:00
ip6_input.c net: Fix memory leak if TPROXY used with TCP early demux 2014-01-27 16:22:11 -08:00
ip6_offload.c net-gre-gro: Add GRE support to the GRO stack 2014-01-07 16:21:31 -05:00
ip6_offload.h ipv6: Pull IPv6 GSO registration out of the module 2012-11-15 17:39:24 -05:00
ip6_output.c ipv6: introduce ip6_dst_mtu_forward and protect forwarding path with it 2014-01-13 11:22:54 -08:00
ip6_tunnel.c ipv6: move IPV6_TCLASS_SHIFT into ipv6.h and define a helper 2014-01-15 15:53:18 -08:00
ip6_vti.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-14 14:42:42 -08:00
ip6mr.c net: avoid reference counter overflows on fib_rules in multicast forwarding 2014-01-14 17:37:25 -08:00
ipcomp6.c ipv4/ipv6: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00
ipv6_sockglue.c ipv6: make IPV6_RECVPKTINFO work for ipv4 datagrams 2014-01-19 19:53:18 -08:00
Kconfig ipv6: Remove privacy config option. 2013-10-28 20:07:50 -04:00
Makefile ipv6: Add support for IPsec virtual tunnel interfaces 2013-10-10 12:00:01 +02:00
mcast.c ipv6: send Change Status Report after DAD is completed 2014-01-17 18:12:29 -08:00
mip6.c ipv4/ipv6: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00
ndisc.c neigh: use tbl->family to distinguish ipv4 from ipv6 2013-12-09 20:56:12 -05:00
netfilter.c netfilter: add nf_ipv6_ops hook to fix xt_addrtype with IPv6 2013-05-23 11:58:55 +02:00
output_core.c ipv6: move ip6_local_out into core kernel 2013-08-31 22:30:00 -04:00
ping.c ipv6: protect protocols not handling ipv4 from v4 connection/bind attempts 2014-01-21 16:59:19 -08:00
proc.c net: add SNMP counters tracking incoming ECN bits 2013-08-08 22:24:59 -07:00
protocol.c net: remove outdated comment for ipv4 and ipv6 protocol handler 2013-11-28 18:47:51 -05:00
raw.c ipv6: protect protocols not handling ipv4 from v4 connection/bind attempts 2014-01-21 16:59:19 -08:00
reassembly.c ipv6: split inet6_hash_frag for netfilter and initialize secrets with net_get_random_once 2013-10-23 17:01:40 -04:00
route.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-06 17:37:45 -05:00
sit.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-06 17:37:45 -05:00
syncookies.c net: Remove FLOWI_FLAG_CAN_SLEEP 2013-12-06 07:24:39 +01:00
sysctl_net_ipv6.c ipv6: add flowlabel_consistency sysctl 2014-01-19 17:12:31 -08:00
tcp_ipv6.c tcp: delete redundant calls of tcp_mtup_init() 2014-01-21 16:52:31 -08:00
tcpv6_offload.c net-gro: Prepare GRO stack for the upcoming tunneling support 2013-12-12 13:47:53 -05:00
tunnel6.c ipv4/ipv6: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00
udp_impl.h net: ipv4/ipv6: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
udp_offload.c ipv6: fix headroom calculation in udp6_ufo_fragment 2013-11-05 22:09:53 -05:00
udp.c ipv6: make IPV6_RECVPKTINFO work for ipv4 datagrams 2014-01-19 19:53:18 -08:00
udplite.c ipv6: do not clear pinet6 field 2013-05-11 16:26:38 -07:00
xfrm6_input.c netfilter: ipv6: use NFPROTO values for NF_HOOK invocation 2010-03-25 16:00:49 +01:00
xfrm6_mode_beet.c ipsec: be careful of non existing mac headers 2012-02-23 16:50:45 -05:00
xfrm6_mode_ro.c ipv4/ipv6: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00
xfrm6_mode_transport.c
xfrm6_mode_tunnel.c ipv6: Add a receive path hook for vti6 in xfrm6_mode_tunnel. 2013-10-09 13:16:36 +02:00
xfrm6_output.c xfrm: revert ipv4 mtu determination to dst_mtu 2013-08-26 12:40:53 +02:00
xfrm6_policy.c xfrm: Fix null pointer dereference when decoding sessions 2013-11-01 07:08:46 +01:00
xfrm6_state.c xfrm: make local error reporting more robust 2013-08-14 13:07:12 +02:00
xfrm6_tunnel.c ipv4/ipv6: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00