linux/net/ipv4
Nicolas Dichtel f15ca723c1 net: don't call update_pmtu unconditionally
Some dst_ops (e.g. md_dst_ops)) doesn't set this handler. It may result to:
"BUG: unable to handle kernel NULL pointer dereference at           (null)"

Let's add a helper to check if update_pmtu is available before calling it.

Fixes: 52a589d51f ("geneve: update skb dst pmtu on tx path")
Fixes: a93bf0ff44 ("vxlan: update skb dst pmtu on tx path")
CC: Roman Kapl <code@rkapl.cz>
CC: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25 16:27:34 -05:00
..
netfilter netfilter: ipt_CLUSTERIP: fix clusterip_net_exit build regression 2017-12-07 23:19:58 +01:00
af_inet.c net: accept UFO datagrams from tuntap and packet 2017-11-24 01:37:35 +09:00
ah4.c
arp.c ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY 2018-01-15 14:53:43 -05:00
cipso_ipv4.c
datagram.c
devinet.c ipv4: igmp: guard against silly MTU values 2017-12-13 13:13:58 -05:00
esp4.c xfrm: Return error on unknown encap_type in init_state 2018-01-08 07:17:52 +01:00
esp4_offload.c gso: validate gso_type in GSO handlers 2018-01-22 16:01:30 -05:00
fib_frontend.c ipv4: Fix use-after-free when flushing FIB tables 2017-12-20 15:12:39 -05:00
fib_lookup.h
fib_notifier.c
fib_rules.c
fib_semantics.c ipv4: fib: Fix metrics match when deleting a route 2017-12-19 14:21:58 -05:00
fib_trie.c
fou.c
gre_demux.c
gre_offload.c
icmp.c
igmp.c net: igmp: fix source address check for IGMPv3 reports 2018-01-22 16:16:05 -05:00
inet_connection_sock.c
inet_diag.c
inet_fragment.c
inet_hashtables.c
inet_timewait_sock.c Revert "tcp: must block bh in __inet_twsk_hashdance()" 2017-12-05 11:23:58 -05:00
inetpeer.c
ip_forward.c
ip_fragment.c
ip_gre.c ip_gre: remove the incorrect mtu limit for ipgre tap 2017-12-19 13:45:32 -05:00
ip_input.c
ip_options.c
ip_output.c
ip_sockglue.c
ip_tunnel.c net: don't call update_pmtu unconditionally 2018-01-25 16:27:34 -05:00
ip_tunnel_core.c
ip_vti.c net: don't call update_pmtu unconditionally 2018-01-25 16:27:34 -05:00
ipcomp.c
ipconfig.c
ipip.c
ipmr.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
Kconfig
Makefile
netfilter.c
ping.c
proc.c
protocol.c
raw.c net: ipv4: emulate READ_ONCE() on ->hdrincl bit-field in raw_sendmsg() 2018-01-09 11:59:16 -05:00
raw_diag.c
route.c net: ipv4: Make "ip route get" match iif lo rules again. 2018-01-15 13:53:30 -05:00
syncookies.c
sysctl_net_ipv4.c
tcp.c net: tcp: close sock if net namespace is exiting 2018-01-25 10:56:45 -05:00
tcp_bbr.c tcp_bbr: reset long-term bandwidth sampling on loss recovery undo 2017-12-08 13:27:43 -05:00
tcp_bic.c
tcp_cdg.c
tcp_cong.c
tcp_cubic.c
tcp_dctcp.c
tcp_diag.c
tcp_fastopen.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c tcp: fix potential underestimation on rcv_rtt 2017-12-13 16:01:17 -05:00
tcp_ipv4.c tcp md5sig: Use skb's saddr when replying to an incoming segment 2017-12-12 11:15:42 -05:00
tcp_lp.c
tcp_metrics.c
tcp_minisocks.c tcp/dccp: block bh before arming time_wait timer 2017-12-01 15:07:43 -05:00
tcp_nv.c
tcp_offload.c gso: validate gso_type in GSO handlers 2018-01-22 16:01:30 -05:00
tcp_output.c tcp: when scheduling TLP, time of RTO should account for current ACK 2017-11-19 12:25:26 +09:00
tcp_probe.c
tcp_rate.c tcp: invalidate rate samples during SACK reneging 2017-12-08 10:07:02 -05:00
tcp_recovery.c tcp: evaluate packet losses upon RTT change 2017-12-08 14:14:11 -05:00
tcp_scalable.c
tcp_timer.c net: tcp: close sock if net namespace is exiting 2018-01-25 10:56:45 -05:00
tcp_ulp.c
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tunnel4.c
udp.c
udp_diag.c
udp_impl.h
udp_offload.c gso: validate gso_type in GSO handlers 2018-01-22 16:01:30 -05:00
udp_tunnel.c
udplite.c
xfrm4_input.c xfrm: Reinject transport-mode packets through tasklet 2017-12-19 08:23:21 +01:00
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c xfrm: Fix eth_hdr(skb)->h_proto to reflect inner IP version 2018-01-23 10:56:36 +01:00
xfrm4_output.c
xfrm4_policy.c
xfrm4_protocol.c
xfrm4_state.c
xfrm4_tunnel.c