Wei Wang a94b9367e0 ipv6: grab rt->rt6i_ref before allocating pcpu rt ... After rwlock is replaced with rcu and spinlock, ip6_pol_route() will be called with only rcu held. That means rt6 route deletion could happen simultaneously with rt6_make_pcpu_rt(). This could potentially cause memory leak if rt6_release() is called right before rt6_make_pcpu_rt() on the same route. This patch grabs rt->rt6i_ref safely before calling rt6_make_pcpu_rt() to make sure rt6_release() will not get triggered while rt6_make_pcpu_rt() is in progress. And rt6_release() is called after rt6_make_pcpu_rt() is finished. Note: As we are incrementing rt->rt6i_ref in ip6_pol_route(), there is a very slim chance that fib6_purge_rt() will be triggered unnecessarily when deleting a route if ip6_pol_route() running on another thread picks this route as well and tries to make pcpu cache for it. Signed-off-by: Wei Wang <weiwan@google.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-10-07 21:22:58 +01:00
..
ila	netfilter: nf_hook_ops structs can be const	2017-07-31 19:10:44 +02:00
netfilter	netfilter: xtables: add scheduling opportunity in get_counters	2017-09-08 18:55:27 +02:00
addrconf.c	ipv6: hook up exception table to store dst cache	2017-10-07 21:22:57 +01:00
addrconf_core.c
addrlabel.c	ipv6: addrlabel: per netns list	2017-09-19 16:32:23 -07:00
af_inet6.c	ipv6: Add sysctl for per namespace flow label reflection	2017-08-24 18:05:43 -07:00
ah6.c
anycast.c
calipso.c
datagram.c
esp6.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-09-01 17:42:05 -07:00
esp6_offload.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-09-01 17:42:05 -07:00
exthdrs.c	ipv6: sr: allow SRH insertion with arbitrary segments_left value	2017-08-07 14:16:21 -07:00
exthdrs_core.c	net: ipv6: remove unused code in ipv6_find_hdr()	2017-10-05 21:53:02 -07:00
exthdrs_offload.c
fib6_notifier.c	net: Add module reference to FIB notifiers	2017-09-01 20:33:42 -07:00
fib6_rules.c	net: ipv6: avoid overhead when no custom FIB rules are installed	2017-08-08 21:40:08 -07:00
fou6.c
icmp.c	net/ipv6: Convert icmpv6_push_pending_frames to void	2017-10-06 09:52:31 -07:00
inet6_connection_sock.c
inet6_hashtables.c	net: ipv6: add second dif to inet6 socket lookups	2017-08-07 11:39:22 -07:00
ip6_checksum.c
ip6_fib.c	ipv6: hook up exception table to store dst cache	2017-10-07 21:22:57 +01:00
ip6_flowlabel.c
ip6_gre.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-10-05 18:19:22 -07:00
ip6_icmp.c
ip6_input.c
ip6_offload.c
ip6_offload.h
ip6_output.c	udp: consistently apply ufo or fragmentation	2017-08-10 09:52:12 -07:00
ip6_tunnel.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-10-05 18:19:22 -07:00
ip6_udp_tunnel.c
ip6_vti.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-10-05 18:19:22 -07:00
ip6mr.c	rtnetlink: make rtnl_register accept a flags parameter	2017-08-09 16:57:38 -07:00
ipcomp6.c
ipv6_sockglue.c	net-ipv6: add support for sockopt(SOL_IPV6, IPV6_FREEBIND)	2017-09-30 05:30:52 +01:00
Kconfig	ipv6: sr: add helper functions for seg6local	2017-08-25 17:10:24 -07:00
Makefile	ipv6: sr: define core operations for seg6local lightweight tunnel	2017-08-07 14:16:22 -07:00
mcast.c
mcast_snoop.c
mip6.c
ndisc.c	neigh: increase queue_len_bytes to match wmem_default	2017-08-29 16:10:50 -07:00
netfilter.c
output_core.c	ipv6: accept 64k - 1 packet length in ip6_find_1stfragopt()	2017-08-22 10:23:26 -07:00
ping.c	net/ipv6: Convert icmpv6_push_pending_frames to void	2017-10-06 09:52:31 -07:00
proc.c
protocol.c
raw.c	net: ipv6: add second dif to raw socket lookups	2017-08-07 11:39:22 -07:00
reassembly.c	Revert "net: fix percpu memory leaks"	2017-09-03 11:01:05 -07:00
route.c	ipv6: grab rt->rt6i_ref before allocating pcpu rt	2017-10-07 21:22:58 +01:00
seg6.c	ipv6: sr: define core operations for seg6local lightweight tunnel	2017-08-07 14:16:22 -07:00
seg6_hmac.c	ipv6: sr: Use ARRAY_SIZE macro	2017-09-01 18:35:23 -07:00
seg6_iptunnel.c	ipv6: sr: add support for encapsulation of L2 frames	2017-08-25 17:10:23 -07:00
seg6_local.c	ipv6: sr: remove duplicate routing header type check	2017-09-11 14:34:10 -07:00
sit.c	ipv6: speedup ipv6 tunnels dismantle	2017-09-19 16:32:23 -07:00
syncookies.c	ipv4: ipv6: initialize treq->txhash in cookie_v[46]_check()	2017-07-18 11:22:51 -07:00
sysctl_net_ipv6.c	ipv6: Add sysctl for per namespace flow label reflection	2017-08-24 18:05:43 -07:00
tcp_ipv6.c	tcp: fix a request socket leak	2017-09-08 16:07:17 -07:00
tcpv6_offload.c
tunnel6.c
udp.c	udpv6: Fix the checksum computation when HW checksum does not apply	2017-09-18 11:43:03 -07:00
udp_impl.h
udp_offload.c	net: avoid skb_warn_bad_offload false positives on UFO	2017-08-08 21:39:01 -07:00
udplite.c
xfrm6_input.c	xfrm6: Fix CHECKSUM_COMPLETE after IPv6 header push	2017-08-02 11:00:15 +02:00
xfrm6_mode_beet.c
xfrm6_mode_ro.c
xfrm6_mode_transport.c
xfrm6_mode_tunnel.c
xfrm6_output.c
xfrm6_policy.c	net: xfrm: support setting an output mark.	2017-08-11 07:03:00 +02:00
xfrm6_protocol.c
xfrm6_state.c
xfrm6_tunnel.c