Linus Torvalds 9b5390d7b6 af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock' ... commit 6e1ce3c345 upstream. Right now we use the 'readlock' both for protecting some of the af_unix IO path and for making the bind be single-threaded. The two are independent, but using the same lock makes for a nasty deadlock due to ordering with regards to filesystem locking. The bind locking would want to nest outside the VSF pathname locking, but the IO locking wants to nest inside some of those same locks. We tried to fix this earlier with commit c845acb324 ("af_unix: Fix splice-bind deadlock") which moved the readlock inside the vfs locks, but that caused problems with overlayfs that will then call back into filesystem routines that take the lock in the wrong order anyway. Splitting the locks means that we can go back to having the bind lock be the outermost lock, and we don't have any deadlocks with lock ordering. Acked-by: Rainer Weikusat <rweikusat@cyberadapt.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2016-09-30 10:18:36 +02:00
..
9p
bluetooth	Bluetooth: L2CAP: Fix returning correct LE CoC response codes	2015-11-05 04:04:00 +01:00
caif
irda
iucv	s390/iucv: do not use arrays as argument	2015-09-21 16:03:04 -07:00
netfilter	netfilter: nf_tables: add clone interface to expression operations	2015-11-10 23:47:32 +01:00
netns	Revert "ipv4/icmp: redirect messages can use the ingress daddr as source"	2015-10-14 06:01:07 -07:00
nfc	NFC: nci: non-static functions can not be inline	2015-10-28 06:44:45 +01:00
phonet
sctp	sctp: start t5 timer only when peer rwnd is 0 and local state is SHUTDOWN_PENDING	2015-12-06 22:31:51 -05:00
tc_act	act_connmark: Remember the struct net instead of guessing it.	2015-09-18 21:59:31 +02:00
6lowpan.h	6lowpan: remove lowpan_is_addr_broadcast	2015-10-21 00:49:25 +02:00
act_api.h	net_sched: make tcf_hash_destroy() static	2015-08-26 11:01:44 -07:00
addrconf.h	ipv6: remove unused neigh parameter from ndisc functions	2015-09-24 12:26:08 -07:00
af_ieee802154.h	ieee802154: af_ieee802154: fix typo in comment.	2015-09-17 13:20:05 +02:00
af_rxrpc.h
af_unix.h	af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock'	2016-09-30 10:18:36 +02:00
af_vsock.h	VSOCK: define VSOCK_SS_LISTEN once only	2015-11-01 12:14:47 -05:00
ah.h
arp.h
atmclip.h
ax25.h	ax25: Stop using sock->sk_protinfo.	2015-06-28 16:55:44 -07:00
ax88796.h
bond_3ad.h	bonding: simplify / unify event handling code for 3ad mode.	2015-11-02 22:52:24 -05:00
bond_alb.h
bond_options.h	bonding: convert num_grat_arp to the new bonding option API	2015-07-27 01:05:24 -07:00
bonding.h	bonding: fix bond_get_stats()	2016-04-20 15:42:04 +09:00
busy_poll.h
cfg80211-wext.h
cfg80211.h	cfg80211/mac80211: clarify RSSI CQM reporting requirements	2015-11-03 10:54:58 +01:00
cfg802154.h	nl802154: add support for security layer	2015-09-30 13:16:44 +02:00
checksum.h	net: Add inet_proto_csum_replace_by_diff utility function	2015-08-17 21:33:06 -07:00
cipso_ipv4.h
cls_cgroup.h	cls_cgroup: factor out classid retrieval	2015-07-20 12:41:30 -07:00
codel.h	net_sched: update hierarchical backlog too	2016-05-18 17:06:39 -07:00
compat.h
datalink.h
dcbevent.h
dcbnl.h
dn_dev.h
dn_fib.h
dn_neigh.h	netfilter: Pass net into okfn	2015-09-17 17:18:37 -07:00
dn_nsp.h
dn_route.h
dn.h
dsa.h	net: dsa: use switchdev obj for VLAN add/del ops	2015-11-01 15:56:11 -05:00
dsfield.h
dst_metadata.h	gro: Make GRO aware of lightweight tunnels.	2016-03-03 15:07:04 -08:00
dst_ops.h	ipv4, ipv6: Pass net into __ip_local_out and __ip6_local_out	2015-10-08 04:27:02 -07:00
dst.h	net: fix IP early demux races	2015-12-14 23:52:00 -05:00
esp.h
ethoc.h	net/ethoc: support big-endian register layout	2015-09-23 15:33:15 -07:00
fib_rules.h	net: ipv6: use common fib_default_rule_pref	2015-09-09 14:19:50 -07:00
firewire.h
flow_dissector.h	flow_dissector: Don't use bit fields.	2015-09-01 16:46:08 -07:00
flow.h	net: Rename FLOWI_FLAG_VRFSRC to FLOWI_FLAG_L3MDEV_SRC	2015-10-07 04:27:42 -07:00
flowcache.h
fou.h
garp.h
gen_stats.h
genetlink.h	genetlink: simplify genl_notify	2015-09-24 12:25:23 -07:00
geneve.h	geneve: Consolidate Geneve functionality in single module.	2015-08-27 15:42:48 -07:00
gre.h	gre: Remove support for sharing GRE protocol hook.	2015-08-10 14:03:54 -07:00
gro_cells.h	gro_cells: remove spinlock protecting receive queues	2015-08-31 15:17:17 -07:00
gue.h
icmp.h
ieee80211_radiotap.h
ieee802154_netdev.h	nl802154: add support for security layer	2015-09-30 13:16:44 +02:00
if_inet6.h
inet_common.h	net: avoid NULL deref in inet_ctl_sock_destroy()	2015-11-02 22:46:09 -05:00
inet_connection_sock.h	tcp/dccp: fix another race at listener dismantle	2016-03-03 15:07:07 -08:00
inet_ecn.h	ipv6: update skb->csum when CE mark is propagated	2016-01-31 11:29:01 -08:00
inet_frag.h	net: fix percpu memory leaks	2015-11-02 22:47:14 -05:00
inet_hashtables.h	tcp/dccp: fix hashdance race for passive sessions	2015-10-23 05:42:21 -07:00
inet_sock.h	xfrm: take care of request sockets	2015-12-07 17:07:33 -05:00
inet_timewait_sock.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
inet6_connection_sock.h	ipv6: remove obsolete inet6 functions	2015-10-03 04:32:42 -07:00
inet6_hashtables.h
inetpeer.h	inet: tcp: fix inetpeer_set_addr_v4()	2015-12-16 00:14:12 -05:00
ip_fib.h	route: check and remove route cache when we get route	2016-03-03 15:07:07 -08:00
ip_tunnels.h	vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices	2016-06-24 10:18:18 -07:00
ip_vs.h	ipvs: drop first packet to redirect conntrack	2016-05-11 11:21:09 +02:00
ip.h	ipv4: Pass struct net into ip_defrag and ip_check_defrag	2015-10-12 19:44:16 -07:00
ip6_checksum.h
ip6_fib.h	ipv6: Check rt->dst.from for the DST_NOCACHE route	2015-11-15 17:12:37 -05:00
ip6_route.h	ipv6: enforce flowi6_oif usage in ip6_dst_lookup_tail()	2016-03-03 15:07:05 -08:00
ip6_tunnel.h	ip_tunnel: disable preemption when updating per-cpu tstats	2015-11-16 14:14:32 -05:00
ipcomp.h
ipconfig.h
ipv6.h	ipv6: add complete rcu protection around np->opt	2015-12-02 23:37:16 -05:00
ipx.h
iw_handler.h	cfg80211/wext: fix message ordering	2016-03-16 08:42:59 -07:00
l3mdev.h	net: Propagate lookup failure in l3mdev_get_saddr to caller	2016-01-04 22:58:30 -05:00
lapb.h
lib80211.h
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h	net: Pass kern from net_proto_family.create to sk_alloc	2015-05-11 10:50:17 -04:00
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	dst: Pass net into dst->output	2015-10-08 04:27:03 -07:00
mac80211.h	mac80211: always set the buf_size in AddBA req to 64	2015-11-20 11:39:40 +01:00
mac802154.h	6lowpan: cleanup lowpan_header_decompress	2015-10-21 00:49:24 +02:00
mip6.h
mld.h
mpls_iptunnel.h	mpls: multipath route support	2015-10-23 06:26:42 -07:00
mpls.h
mrp.h
ndisc.h	Revert "ipv6: ndisc: inherit metadata dst when creating ndisc requests"	2015-12-01 15:07:59 -05:00
neighbour.h	net: add explicit logging and stat for neighbour table overflow	2015-08-10 13:46:21 -07:00
net_namespace.h	netfilter: nfacct: per network namespace support	2015-08-07 11:50:56 +02:00
net_ratelimit.h
netevent.h
netlabel.h
netlink.h	netlink: add nla_get for le32 and le64	2015-09-30 13:16:44 +02:00
netprio_cgroup.h
netrom.h
nexthop.h
nl802154.h	nl802154: add support for security layer	2015-09-30 13:16:44 +02:00
p8022.h
ping.h
pkt_cls.h
pkt_sched.h	net: sched: consolidate tc_classify{,_compat}	2015-08-27 14:18:48 -07:00
protocol.h
psnap.h
raw.h
rawv6.h
red.h
regulatory.h
request_sock.h	tcp/dccp: fix race at listener dismantle phase	2015-10-16 00:52:19 -07:00
rose.h
route.h	net: Propagate lookup failure in l3mdev_get_saddr to caller	2016-01-04 22:58:30 -05:00
rtnetlink.h	netlink: Rightsize IFLA_AF_SPEC size calculation	2015-10-21 19:15:20 -07:00
sch_generic.h	net_sched: update hierarchical backlog too	2016-05-18 17:06:39 -07:00
scm.h	unix: correctly track in-flight fds in sending process user_struct	2016-03-03 15:07:05 -08:00
secure_seq.h
slhc_vj.h
snmp.h
sock.h	net: fix warnings in 'make htmldocs' by moving macro definition out of field declaration	2015-12-16 11:44:17 -05:00
Space.h
stp.h
switchdev.h	switchdev: pass pointer to fib_info instead of copy	2016-06-24 10:18:16 -07:00
tcp_memcontrol.h
tcp_states.h
tcp.h	tcp: fix use after free in tcp_xmit_retransmit_queue()	2016-09-30 10:18:34 +02:00
timewait_sock.h	inet: remove BUG_ON() in twsk_destructor()	2015-07-09 15:12:20 -07:00
transp_v6.h
tso.h	net: tso: add support for IPv6	2015-10-26 22:24:22 -07:00
udp_tunnel.h	vxlan: do not receive IPv4 packets on IPv6 socket	2015-08-29 13:07:54 -07:00
udp.h
udplite.h
vsock_addr.h
vxlan.h	vxlan: fix incorrect RCO bit in VXLAN header	2015-12-05 18:15:29 -05:00
wext.h
wimax.h
x25.h
x25device.h
xfrm.h	xfrm: add rcu protection to sk->sk_policy[]	2015-12-11 19:22:06 -05:00