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9df16efadd2a8a82731dc76ff656c771e261827f
kernel_arpi/include/net
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Wei Wang 9df16efadd ipv4: call dst_hold_safe() properly 
This patch checks all the calls to
dst_hold()/skb_dst_force()/dst_clone()/dst_use() to see if
dst_hold_safe() is needed to avoid double free issue if dst
gc is removed and dst_release() directly destroys dst when
dst->__refcnt drops to 0.

In tx path, TCP hold sk->sk_rx_dst ref count and also hold sock_lock().
UDP and other similar protocols always hold refcount for
skb->_skb_refdst. So both paths seem to be safe.

In rx path, as it is lockless and skb_dst_set_noref() is likely to be
used, dst_hold_safe() should always be used when trying to hold dst.

In the routing code, if dst is held during an rcu protected session, it
is necessary to call dst_hold_safe() as the current dst might be in its
rcu grace period.

Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-17 22:54:00 -04:00
..
9p
9p: constify ->d_name handling
2017-01-12 04:01:17 -05:00
bluetooth
Bluetooth: Set LE Default PHY preferences
2017-05-18 13:52:49 +02:00
caif
…
irda
scripts/spelling.txt: add "overide" pattern and fix typo instances
2017-03-09 17:01:09 -08:00
iucv
…
netfilter
netfilter: nf_tables: revisit chain/object refcounting from elements
2017-05-15 12:51:41 +02:00
netns
tcp: Namespaceify sysctl_tcp_timestamps
2017-06-08 10:53:29 -04:00
nfc
NFC: Add nfc_dbg() macro
2017-04-05 10:15:20 +02:00
phonet
sock: struct proto hash function may error
2016-02-11 03:54:14 -05:00
sctp
sctp: merge sctp_stream_new and sctp_stream_init
2017-06-02 13:56:26 -04:00
tc_act
net: sched: introduce helper to identify gact trap action
2017-06-06 12:45:23 -04:00
6lowpan.h
6lowpan: Fix IID format for Bluetooth
2017-04-12 22:02:36 +02:00
act_api.h
net: sched: add termination action to allow goto chain
2017-05-17 15:22:13 -04:00
addrconf.h
Ipvlan should return an error when an address is already in use.
2017-06-09 12:26:07 -04:00
af_ieee802154.h
…
af_rxrpc.h
rxrpc: Provide a cmsg to specify the amount of Tx data for a call
2017-06-07 17:15:46 +01:00
af_unix.h
af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock'
2016-09-04 13:29:29 -07:00
af_vsock.h
VSOCK: Add vsockmon tap functions
2017-04-24 12:35:56 -04:00
ah.h
…
arp.h
net: add confirm_neigh method to dst_ops
2017-02-07 13:07:46 -05:00
atmclip.h
…
ax25.h
…
ax88796.h
…
bond_3ad.h
bonding: 3ad: apply ad_actor settings changes immediately
2016-02-09 04:45:49 -05:00
bond_alb.h
…
bond_options.h
bonding: Prevent duplicate userspace notification
2017-05-27 18:51:41 -04:00
bonding.h
bonding: fix wq initialization for links created via netlink
2017-04-21 15:28:37 -04:00
busy_poll.h
net: Commonize busy polling code to focus on napi_id instead of socket
2017-03-24 20:49:31 -07:00
calipso.h
calipso: Add a label cache.
2016-06-27 15:06:17 -04:00
cfg80211-wext.h
…
cfg80211.h
nl80211: add authorized flag to ROAM event
2017-06-13 11:04:37 +02:00
cfg802154.h
ieee802154: add netns support
2016-07-08 12:20:57 +02:00
checksum.h
csum: eliminate sparse warning in remcsum_unadjust()
2017-01-20 12:12:13 -05:00
cipso_ipv4.h
netlabel: out of bound access in cipso_v4_validate()
2017-02-04 19:44:22 -05:00
cls_cgroup.h
cls_cgroup: get sk_classid only from full sockets
2016-04-19 20:09:25 -04:00
codel_impl.h
codel: split into multiple files
2016-04-25 16:44:27 -04:00
codel_qdisc.h
net_sched: fq_codel: cache skb->truesize into skb->cb
2016-06-25 12:19:35 -04:00
codel.h
codel: split into multiple files
2016-04-25 16:44:27 -04:00
compat.h
packet: compat support for sock_fprog
2016-06-09 23:41:03 -07:00
datalink.h
…
dcbevent.h
…
dcbnl.h
…
devlink.h
net/devlink: Add E-Switch encapsulation control
2017-04-22 20:26:37 +03:00
dn_dev.h
…
dn_fib.h
…
dn_neigh.h
…
dn_nsp.h
…
dn_route.h
…
dn.h
…
dsa.h
net: dsa: Associate slave network device with CPU port
2017-06-13 16:35:03 -04:00
dsfield.h
…
dst_cache.h
net: add dst_cache support
2016-02-16 20:21:48 -05:00
dst_metadata.h
net/dst: Add dst port to dst_metadata utility functions
2016-11-09 13:41:54 -05:00
dst_ops.h
net: add confirm_neigh method to dst_ops
2017-02-07 13:07:46 -05:00
dst.h
net: introduce a new function dst_dev_put()
2017-06-17 22:53:59 -04:00
esp.h
esp6: Reorganize esp_output
2017-04-14 10:06:42 +02:00
ethoc.h
…
fib_rules.h
net: rtnetlink: plumb extended ack to doit function
2017-04-17 15:35:38 -04:00
firewire.h
…
flow_dissector.h
net/flow_dissector: add support for dissection of misc ip header fields
2017-06-04 18:12:23 -04:00
flow.h
flowcache: make flow_key_size() return "unsigned int"
2017-04-03 19:04:48 -07:00
flowcache.h
flowcache: more "unsigned int"
2017-04-03 19:04:48 -07:00
fou.h
fou: Add encap ops for IPv6 tunnels
2016-05-20 18:03:16 -04:00
fq_impl.h
fq.h: Port memory limit mechanism from fq_codel
2016-09-30 13:29:21 +02:00
fq.h
fq.h: Port memory limit mechanism from fq_codel
2016-09-30 13:29:21 +02:00
garp.h
…
gen_stats.h
net_sched: gen_estimator: complete rewrite of rate estimators
2016-12-05 15:21:59 -05:00
genetlink.h
genetlink: remove ops_list from genetlink header.
2017-06-05 10:54:55 -04:00
geneve.h
net: Remove deprecated tunnel specific UDP offload functions
2016-06-17 20:23:32 -07:00
gre.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-08-18 01:17:32 -04:00
gro_cells.h
gro_cells: move to net/core/gro_cells.c
2017-02-08 14:38:18 -05:00
gtp.h
gtp: #define #define _GTP_H_ and not #define _GTP_H
2016-07-25 17:55:43 -07:00
gue.h
…
hwbm.h
net: add a hardware buffer management helper API
2016-03-14 12:19:46 -04:00
icmp.h
net: snmp: kill STATS_BH macros
2016-04-27 22:48:25 -04:00
ieee80211_radiotap.h
wireless: radiotap: rewrite the radiotap header file
2017-01-25 16:00:33 +01:00
ieee802154_netdev.h
mac802154: constify ieee802154_llsec_ops structure
2016-01-04 20:40:41 +01:00
if_inet6.h
net/ipv6: allow sysctl to change link-local address generation mode
2017-01-27 10:25:34 -05:00
ife.h
net: Introduce ife encapsulation module
2017-02-03 15:16:45 -05:00
ila.h
ila: Add generic ILA translation facility
2015-12-15 23:25:20 -05:00
inet6_connection_sock.h
inet: drop ->bind_conflict
2017-01-18 13:04:28 -05:00
inet6_hashtables.h
tcp/dccp: do not touch listener sk_refcnt under synflood
2016-04-04 22:11:20 -04:00
inet_common.h
net: Work around lockdep limitation in sockets that use sockets
2017-03-09 18:23:27 -08:00
inet_connection_sock.h
tcp: ULP infrastructure
2017-06-15 12:12:40 -04:00
inet_ecn.h
ipv6: suppress sparse warnings in IP6_ECN_set_ce()
2016-08-13 15:08:00 -07:00
inet_frag.h
net: make struct inet_frags::qsize unsigned
2017-05-23 11:13:19 -04:00
inet_hashtables.h
inet: reset tb->fastreuseport when adding a reuseport sk
2017-01-18 13:04:29 -05:00
inet_sock.h
net/tcp-fastopen: Add new API support
2017-01-25 14:04:38 -05:00
inet_timewait_sock.h
ipv4: Namespaceify tcp_tw_recycle and tcp_max_tw_buckets knob
2016-12-29 11:38:31 -05:00
inetpeer.h
inet: tcp: fix inetpeer_set_addr_v4()
2015-12-16 00:14:12 -05:00
ip6_checksum.h
ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short
2016-03-13 23:55:13 -04:00
ip6_fib.h
net: ipv6: Plumb extack through route add functions
2017-05-22 12:12:20 -04:00
ip6_route.h
net: ipv6: Plumb extack through route add functions
2017-05-22 12:12:20 -04:00
ip6_tunnel.h
ip6_tunnel: Allow policy-based routing through tunnels
2017-04-21 13:21:30 -04:00
ip_fib.h
net: ipv4: Add extack message for invalid prefix or length
2017-05-30 11:55:31 -04:00
ip_tunnels.h
ip_tunnel: Allow policy-based routing through tunnels
2017-04-21 13:21:31 -04:00
ip_vs.h
ipvs: remove unused function ip_vs_set_state_timeout
2017-04-28 12:00:10 +02:00
ip.h
net: ipv4: Refine the ipv4_default_advmss
2017-04-13 13:19:48 -04:00
ipcomp.h
…
ipconfig.h
…
ipv6.h
net: ping: do not abuse udp_poll()
2017-06-04 22:56:55 -04:00
ipx.h
…
iw_handler.h
wext: uninline stream addition functions
2017-01-13 09:38:42 +01:00
kcm.h
kcm: Use stream parser
2016-08-17 19:36:23 -04:00
l3mdev.h
net: ipv4: Do not drop to make_route if oif is l3mdev
2016-10-13 12:05:26 -04:00
lapb.h
…
lib80211.h
…
llc_c_ac.h
…
llc_c_ev.h
…
llc_c_st.h
…
llc_conn.h
…
llc_if.h
…
llc_pdu.h
…
llc_s_ac.h
…
llc_s_ev.h
…
llc_s_st.h
…
llc_sap.h
…
llc.h
…
lwtunnel.h
net: add extack arg to lwtunnel build state
2017-05-30 11:55:32 -04:00
mac80211.h
mac80211: manage RX BA session offload without SKB queue
2017-06-08 14:16:29 +02:00
mac802154.h
ieee802154: cleanup WARN_ON for fc fetch
2016-07-08 13:23:12 +02:00
mip6.h
…
mld.h
…
mpls_iptunnel.h
net: mpls: Increase max number of labels for lwt encap
2017-04-01 20:21:44 -07:00
mpls.h
openvswitch: use mpls_hdr
2016-10-03 02:00:22 -04:00
mrp.h
…
ncsi.h
net/ncsi: Introduce ncsi_stop_dev()
2016-10-04 02:11:51 -04:00
ndisc.h
ipv6: add support for NETDEV_RESEND_IGMP event
2017-03-28 22:02:21 -07:00
neighbour.h
neigh: Really delete an arp/neigh entry on "ip neigh delete" or "arp -d"
2017-06-04 21:37:18 -04:00
net_namespace.h
can: initial support for network namespaces
2017-04-04 17:35:58 +02:00
net_ratelimit.h
…
netevent.h
neigh: Send a notification when DELAY_PROBE_TIME changes
2016-07-05 09:06:29 -07:00
netlabel.h
netlabel: Implement CALIPSO config functions for SMACK.
2016-06-27 15:06:18 -04:00
netlink.h
netlink: pass extended ACK struct to parsing functions
2017-04-13 13:58:22 -04:00
netprio_cgroup.h
net: wrap sock->sk_cgrp_prioidx and ->sk_classid inside a struct
2015-12-08 22:02:33 -05:00
netrom.h
…
nexthop.h
…
nl802154.h
ieee802154: add netns support
2016-07-08 12:20:57 +02:00
p8022.h
…
ping.h
net: ping: make ping_v6_sendmsg static
2016-03-23 22:09:58 -04:00
pkt_cls.h
sched: add helper for updating statistics on all actions
2017-05-31 17:58:13 -04:00
pkt_sched.h
net: sched: move tc_classify function to cls_api.c
2017-05-17 15:22:13 -04:00
pptp.h
pptp: Refactor the struct and macros of PPTP codes
2016-08-15 10:55:53 -07:00
protocol.h
net: Add sysctl to toggle early demux for tcp and udp
2017-03-24 13:17:07 -07:00
psample.h
net: Introduce psample, a new genetlink channel for packet sampling
2017-01-24 13:44:28 -05:00
psnap.h
…
raw.h
net: ip, diag -- Add diag interface for raw sockets
2016-10-23 19:35:24 -04:00
rawv6.h
net: ip, diag -- Add diag interface for raw sockets
2016-10-23 19:35:24 -04:00
red.h
ktime: Get rid of the union
2016-12-25 17:21:22 +01:00
regulatory.h
…
request_sock.h
net: make struct request_sock_ops::obj_size unsigned
2017-05-23 11:13:19 -04:00
rose.h
…
route.h
ipv4: call dst_hold_safe() properly
2017-06-17 22:54:00 -04:00
rtnetlink.h
net: rtnetlink: plumb extended ack to doit function
2017-04-17 15:35:38 -04:00
sch_generic.h
net: sched: add termination action to allow goto chain
2017-05-17 15:22:13 -04:00
scm.h
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
secure_seq.h
tcp: Namespaceify sysctl_tcp_timestamps
2017-06-08 10:53:29 -04:00
seg6_hmac.h
ipv6: sr: add core files for SR HMAC support
2016-11-09 20:40:06 -05:00
seg6.h
ipv6: sr: add core files for SR HMAC support
2016-11-09 20:40:06 -05:00
slhc_vj.h
…
smc.h
smc: netlink interface for SMC sockets
2017-01-09 16:07:41 -05:00
snmp.h
net: snmp: fix 64bit stats on 32bit arches
2016-04-28 11:49:45 -04:00
sock_reuseport.h
soreuseport: fix NULL ptr dereference SO_REUSEPORT after bind
2016-01-19 14:44:23 -05:00
sock.h
tcp: add TCPMemoryPressuresChrono counter
2017-06-08 11:26:19 -04:00
Space.h
…
stp.h
…
strparser.h
kcm: Remove TCP specific references from kcm and strparser
2016-08-28 23:32:41 -04:00
switchdev.h
net: bridge: Receive notification about successful FDB offload
2017-06-08 14:16:25 -04:00
tcp_states.h
…
tcp.h
tcp: export do_tcp_sendpages and tcp_rate_check_app_limited functions
2017-06-15 12:12:40 -04:00
timewait_sock.h
…
tls.h
tls: kernel TLS support
2017-06-15 12:12:40 -04:00
transp_v6.h
ipv6: add new struct ipcm6_cookie
2016-05-03 16:08:14 -04:00
tso.h
net: tso: add support for IPv6
2015-10-26 22:24:22 -07:00
udp_tunnel.h
vxlan: Add new UDP encapsulation offload type for VXLAN-GPE
2016-06-17 20:23:32 -07:00
udp.h
udp: use a separate rx queue for packet reception
2017-05-16 15:41:29 -04:00
udplite.h
udp: use a separate rx queue for packet reception
2017-05-16 15:41:29 -04:00
vsock_addr.h
…
vxlan.h
vxlan: remove unsed vxlan_dev_dst_port()
2016-11-15 12:16:13 -05:00
wext.h
…
wimax.h
…
x25.h
net: x25: fix one potential use-after-free issue
2017-05-18 10:05:40 -04:00
x25device.h
…
xfrm.h
xfrm: fix stack access out of bounds with CONFIG_XFRM_SUB_POLICY
2017-05-04 07:30:59 +02:00