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android_kernel_samsung_a7y1.../include/net
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Eric Dumazet 88913b39bb net: add annotations on hh->hh_len lockless accesses 
[ Upstream commit c305c6ae79e2ce20c22660ceda94f0d86d639a82 ]

KCSAN reported a data-race [1]

While we can use READ_ONCE() on the read sides,
we need to make sure hh->hh_len is written last.

[1]

BUG: KCSAN: data-race in eth_header_cache / neigh_resolve_output

write to 0xffff8880b9dedcb8 of 4 bytes by task 29760 on cpu 0:
 eth_header_cache+0xa9/0xd0 net/ethernet/eth.c:247
 neigh_hh_init net/core/neighbour.c:1463 [inline]
 neigh_resolve_output net/core/neighbour.c:1480 [inline]
 neigh_resolve_output+0x415/0x470 net/core/neighbour.c:1470
 neigh_output include/net/neighbour.h:511 [inline]
 ip6_finish_output2+0x7a2/0xec0 net/ipv6/ip6_output.c:116
 __ip6_finish_output net/ipv6/ip6_output.c:142 [inline]
 __ip6_finish_output+0x2d7/0x330 net/ipv6/ip6_output.c:127
 ip6_finish_output+0x41/0x160 net/ipv6/ip6_output.c:152
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0xf2/0x280 net/ipv6/ip6_output.c:175
 dst_output include/net/dst.h:436 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 ndisc_send_skb+0x459/0x5f0 net/ipv6/ndisc.c:505
 ndisc_send_ns+0x207/0x430 net/ipv6/ndisc.c:647
 rt6_probe_deferred+0x98/0xf0 net/ipv6/route.c:615
 process_one_work+0x3d4/0x890 kernel/workqueue.c:2269
 worker_thread+0xa0/0x800 kernel/workqueue.c:2415
 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

read to 0xffff8880b9dedcb8 of 4 bytes by task 29572 on cpu 1:
 neigh_resolve_output net/core/neighbour.c:1479 [inline]
 neigh_resolve_output+0x113/0x470 net/core/neighbour.c:1470
 neigh_output include/net/neighbour.h:511 [inline]
 ip6_finish_output2+0x7a2/0xec0 net/ipv6/ip6_output.c:116
 __ip6_finish_output net/ipv6/ip6_output.c:142 [inline]
 __ip6_finish_output+0x2d7/0x330 net/ipv6/ip6_output.c:127
 ip6_finish_output+0x41/0x160 net/ipv6/ip6_output.c:152
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0xf2/0x280 net/ipv6/ip6_output.c:175
 dst_output include/net/dst.h:436 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 ndisc_send_skb+0x459/0x5f0 net/ipv6/ndisc.c:505
 ndisc_send_ns+0x207/0x430 net/ipv6/ndisc.c:647
 rt6_probe_deferred+0x98/0xf0 net/ipv6/route.c:615
 process_one_work+0x3d4/0x890 kernel/workqueue.c:2269
 worker_thread+0xa0/0x800 kernel/workqueue.c:2415
 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 29572 Comm: kworker/1:4 Not tainted 5.4.0-rc6+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events rt6_probe_deferred

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-07 13:25:04 +02:00
..
9p A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bluetooth Bluetooth: Align minimum encryption key size for LE and BR/EDR connections 2020-04-06 19:16:52 +02:00
caif A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
irda A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
iucv A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
netfilter netfilter: nf_tables: Align nft_expr private data to 64-bit 2020-04-07 11:48:50 +02:00
netns inet: switch IP ID generator to siphash 2020-04-06 21:32:45 +02:00
nfc A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
phonet A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sctp sctp: fix the issue that flags are ignored when using kernel_connect 2020-04-07 09:28:40 +02:00
tc_act A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
6lowpan.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
act_api.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
addrconf.h ipv6: fix a potential deadlock in do_ipv6_setsockopt() 2020-04-06 16:43:14 +02:00
af_ieee802154.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
af_rxrpc.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
af_unix.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
af_vsock.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ah.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
arp.h ipv4: Define __ipv4_neigh_lookup_noref when CONFIG_INET is disabled 2020-04-06 18:47:58 +02:00
atmclip.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ax25.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ax88796.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bond_3ad.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bond_alb.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bond_options.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bonding.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
busy_poll.h net: check before dereferencing netdev_ops during busy poll 2020-04-06 19:17:35 +02:00
cfg80211-wext.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cfg80211.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cfg802154.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
checksum.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cipso_ipv4.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cls_cgroup.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
codel.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
compat.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
datalink.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dcbevent.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dcbnl.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dn_dev.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dn_fib.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dn_neigh.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dn_nsp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dn_route.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dn.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dsa.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dsfield.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dst_cache.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dst_metadata.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dst_ops.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dst.h net: dst: Force 4-byte alignment of dst_metrics 2020-04-07 13:22:22 +02:00
esp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ethoc.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
fib_rules.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
firewire.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
flow_dissector.h net/flow_dissector: switch to siphash 2020-04-07 09:29:43 +02:00
flow.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
flowcache.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
fou.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
garp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
gen_stats.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
genetlink.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
geneve.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
gre.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
gro_cells.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
gue.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
icmp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ieee80211_radiotap.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ieee802154_netdev.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
if_inet6.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
inet_common.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
inet_connection_sock.h tcp/dccp: drop SYN packets if accept queue is full 2020-04-06 11:16:42 +02:00
inet_ecn.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
inet_frag.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
inet_hashtables.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
inet_sock.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
inet_timewait_sock.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
inet6_connection_sock.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
inet6_hashtables.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
inetpeer.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ip_fib.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ip_tunnels.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ip_vs.h ipvs: move old_secure_tcp into struct netns_ipvs 2020-04-07 11:49:17 +02:00
ip.h inet: protect against too small mtu values. 2020-04-07 13:12:32 +02:00
ip6_checksum.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ip6_fib.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ip6_route.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ip6_tunnel.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ipcomp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ipconfig.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ipv6.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ipx.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
iw_handler.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
l3mdev.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
lapb.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
lib80211.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc_c_ac.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc_c_ev.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc_c_st.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc_conn.h llc: fix sk_buff leak in llc_conn_service() 2020-04-07 09:28:32 +02:00
llc_if.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc_pdu.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc_s_ac.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc_s_ev.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc_s_st.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc_sap.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
llc.h llc: avoid blocking in llc_sap_close() 2020-04-07 12:27:44 +02:00
lwtunnel.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mac80211.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mac802154.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mip6.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mld.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mpls_iptunnel.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mpls.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mptcp_v4.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mptcp_v6.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mptcp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mrp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ncm.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ndisc.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
neighbour.h net: add annotations on hh->hh_len lockless accesses 2020-04-07 13:25:04 +02:00
net_namespace.h netns: provide pure entropy for net_hash_mix() 2020-04-06 15:08:06 +02:00
net_ratelimit.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
netevent.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
netlabel.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
netlink.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
netprio_cgroup.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
netrom.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
nexthop.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
nl802154.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
p8022.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ping.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
pkt_cls.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
pkt_sched.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
protocol.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
psnap.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
raw.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
rawv6.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
red.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
regulatory.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
request_sock.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
rose.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
route.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
rtnetlink.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sch_generic.h sch_netem: fix rcu splat in netem_enqueue() 2020-04-07 09:28:38 +02:00
scm.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
secure_seq.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
slhc_vj.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
snmp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sock.h net: fix possible overflow in __sk_mem_raise_allocated() 2020-04-07 12:43:02 +02:00
Space.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
stp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
switchdev.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tcp_memcontrol.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tcp_states.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tcp.h tcp: Protect accesses to .ts_recent_stamp with {READ,WRITE}_ONCE() 2020-04-07 13:12:38 +02:00
timewait_sock.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
transp_v6.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tso.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
udp_tunnel.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
udp.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
udplite.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vsock_addr.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vxlan.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
wext.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
wimax.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
x25.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
x25device.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
xfrm.h xfrm: clean up xfrm protocol checks 2020-04-06 21:34:53 +02:00