Jonathan Lemon 9c69a13205 route: Avoid crash from dereferencing NULL rt->from ... When __ip6_rt_update_pmtu() is called, rt->from is RCU dereferenced, but is never checked for null - rt6_flush_exceptions() may have removed the entry. [ 1913.989004] RIP: 0010:ip6_rt_cache_alloc+0x13/0x170 [ 1914.209410] Call Trace: [ 1914.214798] <IRQ> [ 1914.219226] __ip6_rt_update_pmtu+0xb0/0x190 [ 1914.228649] ip6_tnl_xmit+0x2c2/0x970 [ip6_tunnel] [ 1914.239223] ? ip6_tnl_parse_tlv_enc_lim+0x32/0x1a0 [ip6_tunnel] [ 1914.252489] ? __gre6_xmit+0x148/0x530 [ip6_gre] [ 1914.262678] ip6gre_tunnel_xmit+0x17e/0x3c7 [ip6_gre] [ 1914.273831] dev_hard_start_xmit+0x8d/0x1f0 [ 1914.283061] sch_direct_xmit+0xfa/0x230 [ 1914.291521] __qdisc_run+0x154/0x4b0 [ 1914.299407] net_tx_action+0x10e/0x1f0 [ 1914.307678] __do_softirq+0xca/0x297 [ 1914.315567] irq_exit+0x96/0xa0 [ 1914.322494] smp_apic_timer_interrupt+0x68/0x130 [ 1914.332683] apic_timer_interrupt+0xf/0x20 [ 1914.341721] </IRQ> Fixes: a68886a691 ("net/ipv6: Make from in rt6_info rcu protected") Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@gmail.com> Reviewed-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-04-15 13:31:59 -07:00
..
ila	ila: Fix rhashtable walker list corruption	2019-03-27 22:46:16 -07:00
netfilter	netfilter: ip6t_srh: fix NULL pointer dereferences	2019-03-18 16:22:48 +01:00
addrconf_core.c
addrconf.c	net: ignore sysctl_devconf_inherit_init_net without SYSCTL	2019-03-04 13:14:34 -08:00
addrlabel.c
af_inet6.c
ah6.c
anycast.c
calipso.c
datagram.c
esp6_offload.c
esp6.c
exthdrs_core.c
exthdrs_offload.c
exthdrs.c
fib6_notifier.c
fib6_rules.c
fou6.c	fou, fou6: avoid uninit-value in gue_err() and gue6_err()	2019-03-08 15:19:53 -08:00
icmp.c	ipv6: icmp: use percpu allocation	2019-02-24 21:57:26 -08:00
inet6_connection_sock.c
inet6_hashtables.c
ip6_checksum.c
ip6_fib.c
ip6_flowlabel.c
ip6_gre.c	net: ip6_gre: fix possible use-after-free in ip6erspan_rcv	2019-04-08 16:16:47 -07:00
ip6_icmp.c
ip6_input.c
ip6_offload.c
ip6_offload.h
ip6_output.c	ipv6: Fix dangling pointer when ipv6 fragment	2019-04-03 21:42:20 -07:00
ip6_tunnel.c	ip6_tunnel: Match to ARPHRD_TUNNEL6 for dev type	2019-04-02 13:19:34 -07:00
ip6_udp_tunnel.c
ip6_vti.c
ip6mr.c	ip6mr: Do not call __IP6_INC_STATS() from preemptible context	2019-03-04 10:55:48 -08:00
ipcomp6.c
ipv6_sockglue.c	net: ipv6: add socket option IPV6_ROUTER_ALERT_ISOLATE	2019-03-03 21:05:10 -08:00
Kconfig
Makefile
mcast_snoop.c
mcast.c
mip6.c
ndisc.c
netfilter.c
output_core.c
ping.c
proc.c
protocol.c
raw.c
reassembly.c	net: remove unused struct inet_frag_queue.fragments field	2019-02-26 08:27:05 -08:00
route.c	route: Avoid crash from dereferencing NULL rt->from	2019-04-15 13:31:59 -07:00
seg6_hmac.c
seg6_iptunnel.c
seg6_local.c
seg6.c
sit.c	ipv6: sit: reset ip header pointer in ipip6_rcv	2019-04-04 18:34:23 -07:00
syncookies.c
sysctl_net_ipv6.c
tcp_ipv6.c	tcp: do not use ipv6 header for ipv4 flow	2019-03-19 14:00:27 -07:00
tcpv6_offload.c
tunnel6.c
udp_impl.h
udp_offload.c
udp.c	udpv6: Check address length before reading address family	2019-04-12 10:25:03 -07:00
udplite.c
xfrm6_input.c
xfrm6_mode_beet.c
xfrm6_mode_ro.c
xfrm6_mode_transport.c
xfrm6_mode_tunnel.c
xfrm6_output.c
xfrm6_policy.c
xfrm6_protocol.c
xfrm6_state.c
xfrm6_tunnel.c