Lokesh Dhoundiyal 9e6c6d17d1 ipv4: drop dst in multicast routing path ... kmemleak reports the following when routing multicast traffic over an ipsec tunnel. Kmemleak output: unreferenced object 0x8000000044bebb00 (size 256): comm "softirq", pid 0, jiffies 4294985356 (age 126.810s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 80 00 00 00 05 13 74 80 ..............t. 80 00 00 00 04 9b bf f9 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000f83947e0>] __kmalloc+0x1e8/0x300 [<00000000b7ed8dca>] metadata_dst_alloc+0x24/0x58 [<0000000081d32c20>] __ipgre_rcv+0x100/0x2b8 [<00000000824f6cf1>] gre_rcv+0x178/0x540 [<00000000ccd4e162>] gre_rcv+0x7c/0xd8 [<00000000c024b148>] ip_protocol_deliver_rcu+0x124/0x350 [<000000006a483377>] ip_local_deliver_finish+0x54/0x68 [<00000000d9271b3a>] ip_local_deliver+0x128/0x168 [<00000000bd4968ae>] xfrm_trans_reinject+0xb8/0xf8 [<0000000071672a19>] tasklet_action_common.isra.16+0xc4/0x1b0 [<0000000062e9c336>] __do_softirq+0x1fc/0x3e0 [<00000000013d7914>] irq_exit+0xc4/0xe0 [<00000000a4d73e90>] plat_irq_dispatch+0x7c/0x108 [<000000000751eb8e>] handle_int+0x16c/0x178 [<000000001668023b>] _raw_spin_unlock_irqrestore+0x1c/0x28 The metadata dst is leaked when ip_route_input_mc() updates the dst for the skb. Commit f38a9eb1f7 ("dst: Metadata destinations") correctly handled dropping the dst in ip_route_input_slow() but missed the multicast case which is handled by ip_route_input_mc(). Drop the dst in ip_route_input_mc() avoiding the leak. Fixes: f38a9eb1f7 ("dst: Metadata destinations") Signed-off-by: Lokesh Dhoundiyal <lokesh.dhoundiyal@alliedtelesis.co.nz> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220505020017.3111846-1-chris.packham@alliedtelesis.co.nz Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2022-05-06 12:46:38 -07:00
..
bpfilter	…
netfilter	netfilter: flowtable: Remove the empty file	2022-04-25 10:37:33 +02:00
Kconfig	…
Makefile	…
af_inet.c	gso: do not skip outer ip header in case of ipip and net_failover	2022-02-21 11:41:30 +00:00
ah4.c	…
arp.c	net: neigh: add skb drop reasons to arp_error_report()	2022-02-26 12:53:59 +00:00
bpf_tcp_ca.c	bpf: reject program if a __user tagged memory accessed in kernel way	2022-01-27 12:03:46 -08:00
cipso_ipv4.c	…
datagram.c	…
devinet.c	net: Add new protocol attribute to IP addresses	2022-02-18 21:20:06 -08:00
esp4.c	esp: limit skb_page_frag_refill use to a single page	2022-04-13 10:16:11 +02:00
esp4_offload.c	net: Fix esp GSO on inter address family tunnels.	2022-03-07 13:14:04 +01:00
fib_frontend.c	net: Add l3mdev index to flow struct and avoid oif reset for port devices	2022-03-15 20:20:02 -07:00
fib_lookup.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-02-17 11:44:20 -08:00
fib_notifier.c	…
fib_rules.c	ipv4: Reject again rules with high DSCP values	2022-02-10 15:33:33 +00:00
fib_semantics.c	net: ipv4: fix route with nexthop object delete warning	2022-04-01 12:09:17 +01:00
fib_trie.c	net: Add l3mdev index to flow struct and avoid oif reset for port devices	2022-03-15 20:20:02 -07:00
fou.c	…
gre_demux.c	…
gre_offload.c	…
icmp.c	ipv4: do not use per netns icmp sockets	2022-01-25 11:25:21 +00:00
igmp.c	net: igmp: respect RCU rules in ip_mc_source() and ip_mc_msfilter()	2022-04-30 15:18:19 +01:00
inet_connection_sock.c	tcp: Use BPF timeout setting for SYN ACK RTO	2022-02-02 14:45:18 +00:00
inet_diag.c	…
inet_fragment.c	net: ip: Handle delivery_time in ip defrag	2022-03-03 14:38:48 +00:00
inet_hashtables.c	tcp: drop the hash_32() part from the index calculation	2022-05-04 19:22:33 -07:00
inet_timewait_sock.c	tcp: allocate tcp_death_row outside of struct netns_ipv4	2022-01-26 19:00:31 -08:00
inetpeer.c	…
ip_forward.c	net: Add skb_clear_tstamp() to keep the mono delivery_time	2022-03-03 14:38:48 +00:00
ip_fragment.c	net: ip: Handle delivery_time in ip defrag	2022-03-03 14:38:48 +00:00
ip_gre.c	ip_gre, ip6_gre: Fix race condition on o_seqno in collect_md mode	2022-04-25 11:40:45 +01:00
ip_input.c	net: Postpone skb_clear_delivery_time() until knowing the skb is delivered locally	2022-03-03 14:38:48 +00:00
ip_options.c	ipv4: drop fragmentation code from ip_options_build()	2022-01-29 17:53:07 +00:00
ip_output.c	net: Set skb->mono_delivery_time and clear it after sch_handle_ingress()	2022-03-03 14:38:48 +00:00
ip_sockglue.c	…
ip_tunnel.c	net: Handle l3mdev in ip_tunnel_init_flow	2022-04-15 14:27:30 -07:00
ip_tunnel_core.c	…
ip_vti.c	…
ipcomp.c	…
ipconfig.c	…
ipip.c	…
ipmr.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-02-10 17:29:56 -08:00
ipmr_base.c	…
metrics.c	…
netfilter.c	…
netlink.c	…
nexthop.c	nexthop: change nexthop_net_exit() to nexthop_net_exit_batch()	2022-02-08 20:41:33 -08:00
ping.c	ping: fix address binding wrt vrf	2022-05-05 18:12:44 -07:00
proc.c	tcp: allocate tcp_death_row outside of struct netns_ipv4	2022-01-26 19:00:31 -08:00
protocol.c	…
raw.c	Networking fixes for 5.17-rc2, including fixes from netfilter and can.	2022-01-27 20:58:39 +02:00
raw_diag.c	…
route.c	ipv4: drop dst in multicast routing path	2022-05-06 12:46:38 -07:00
syncookies.c	tcp: make sure treq->af_specific is initialized	2022-04-25 12:10:11 +01:00
sysctl_net_ipv4.c	tcp: adjust TSO packet sizes based on min_rtt	2022-03-09 20:05:44 -08:00
tcp.c	tcp: autocork: take MSG_EOR hint into consideration	2022-03-09 20:05:20 -08:00
tcp_bbr.c	bpf: Remove check_kfunc_call callback and old kfunc BTF ID API	2022-01-18 14:26:41 -08:00
tcp_bic.c	…
tcp_bpf.c	bpf, sockmap: Fix double uncharge the mem of sk_msg	2022-03-15 16:43:31 +01:00
tcp_cdg.c	…
tcp_cong.c	tcp: unexport tcp_ca_get_key_by_name and tcp_ca_get_name_by_key	2022-03-11 22:51:40 -08:00
tcp_cubic.c	bpf: Remove check_kfunc_call callback and old kfunc BTF ID API	2022-01-18 14:26:41 -08:00
tcp_dctcp.c	bpf: Remove check_kfunc_call callback and old kfunc BTF ID API	2022-01-18 14:26:41 -08:00
tcp_dctcp.h	…
tcp_diag.c	…
tcp_fastopen.c	…
tcp_highspeed.c	…
tcp_htcp.c	…
tcp_hybla.c	…
tcp_illinois.c	…
tcp_input.c	tcp: fix F-RTO may not work correctly when receiving DSACK	2022-04-28 10:35:38 -07:00
tcp_ipv4.c	tcp: adjust TSO packet sizes based on min_rtt	2022-03-09 20:05:44 -08:00
tcp_lp.c	…
tcp_metrics.c	…
tcp_minisocks.c	tcp: md5: incorrect tcp_header_len for incoming connections	2022-04-22 15:05:59 -07:00
tcp_nv.c	…
tcp_offload.c	…
tcp_output.c	tcp: fix potential xmit stalls caused by TCP_NOTSENT_LOWAT	2022-04-25 12:07:45 +01:00
tcp_rate.c	tcp: ensure to use the most recently sent skb when filling the rate sample	2022-04-22 15:20:47 -07:00
tcp_recovery.c	…
tcp_scalable.c	…
tcp_timer.c	…
tcp_ulp.c	…
tcp_vegas.c	…
tcp_vegas.h	…
tcp_veno.c	…
tcp_westwood.c	…
tcp_yeah.c	…
tunnel4.c	…
udp.c	net: udp: use kfree_skb_reason() in __udp_queue_rcv_skb()	2022-02-07 11:18:49 +00:00
udp_bpf.c	…
udp_diag.c	…
udp_impl.h	…
udp_offload.c	…
udp_tunnel_core.c	…
udp_tunnel_nic.c	udp_tunnel: Fix end of loop test in udp_tunnel_nic_unregister()	2022-02-23 12:35:00 +00:00
udp_tunnel_stub.c	…
udplite.c	…
xfrm4_input.c	…
xfrm4_output.c	…
xfrm4_policy.c	net: Add l3mdev index to flow struct and avoid oif reset for port devices	2022-03-15 20:20:02 -07:00
xfrm4_protocol.c	…
xfrm4_state.c	…
xfrm4_tunnel.c	…