Eric Dumazet 5e0724d027 tcp/dccp: fix hashdance race for passive sessions ... Multiple cpus can process duplicates of incoming ACK messages matching a SYN_RECV request socket. This is a rare event under normal operations, but definitely can happen. Only one must win the race, otherwise corruption would occur. To fix this without adding new atomic ops, we use logic in inet_ehash_nolisten() to detect the request was present in the same ehash bucket where we try to insert the new child. If request socket was not found, we have to undo the child creation. This actually removes a spin_lock()/spin_unlock() pair in reqsk_queue_unlink() for the fast path. Fixes: e994b2f0fb ("tcp: do not lock listener to process SYN packets") Fixes: 079096f103 ("tcp/dccp: install syn_recv requests into ehash table") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-10-23 05:42:21 -07:00
..
6lowpan	6lowpan: move shared settings to lowpan_netdev_setup	2015-10-08 14:25:34 +02:00
9p	net/9p: Remove ib_get_dma_mr calls	2015-08-30 18:12:36 -04:00
802
8021q	net: 8021q: convert to using IFF_NO_QUEUE	2015-08-18 11:55:06 -07:00
appletalk	net: Pass kern from net_proto_family.create to sk_alloc	2015-05-11 10:50:17 -04:00
atm	atm: deal with setting entry before mkip was called	2015-09-17 22:13:32 -07:00
ax25	NET: AX.25: Stop heartbeat timer on disconnect.	2015-07-15 15:59:58 -07:00
batman-adv	batman-adv: turn batadv_neigh_node_get() into local function	2015-08-27 20:15:34 +02:00
bluetooth	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
bridge	netlink: Rightsize IFLA_AF_SPEC size calculation	2015-10-21 19:15:20 -07:00
caif	net: caif: convert to using IFF_NO_QUEUE	2015-08-18 11:55:07 -07:00
can	can: avoid using timeval for uapi	2015-10-13 17:42:34 +02:00
ceph	rbd: use writefull op for object size writes	2015-10-16 16:49:01 +02:00
core	netlink: Rightsize IFLA_AF_SPEC size calculation	2015-10-21 19:15:20 -07:00
dcb	net/dcb: make dcbnl.c explicitly non-modular	2015-10-09 07:52:27 -07:00
dccp	tcp/dccp: fix hashdance race for passive sessions	2015-10-23 05:42:21 -07:00
decnet	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2015-10-17 14:28:03 +02:00
dns_resolver
dsa	net: dsa: remove port_fdb_getnext	2015-10-22 07:38:45 -07:00
ethernet	net: help compiler generate better code in eth_get_headlen	2015-09-28 22:51:15 -07:00
hsr	net: hsr: convert to using IFF_NO_QUEUE	2015-08-18 11:55:07 -07:00
ieee802154	6lowpan: move shared settings to lowpan_netdev_setup	2015-10-08 14:25:34 +02:00
ipv4	tcp/dccp: fix hashdance race for passive sessions	2015-10-23 05:42:21 -07:00
ipv6	tcp/dccp: fix hashdance race for passive sessions	2015-10-23 05:42:21 -07:00
ipx	net: Pass kern from net_proto_family.create to sk_alloc	2015-05-11 10:50:17 -04:00
irda	irda: use msecs_to_jiffies for conversion to jiffies	2015-05-25 17:46:21 -04:00
iucv	s390/iucv: do not use arrays as argument	2015-09-21 16:03:04 -07:00
key	net: Fix RCU splat in af_key	2015-08-24 14:48:10 -07:00
l2tp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-02 07:21:25 -07:00
l3mdev	net: Add netif_is_l3_slave	2015-10-07 04:27:43 -07:00
lapb
llc	tcp: fix recv with flags MSG_WAITALL | MSG_PEEK	2015-07-27 01:06:53 -07:00
mac80211	Here's another set of patches for the current cycle:	2015-10-22 07:28:41 -07:00
mac802154	ieee802154: change mtu size behaviour	2015-09-30 13:21:32 +02:00
mpls	dst: Pass net into dst->output	2015-10-08 04:27:03 -07:00
netfilter	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2015-10-17 14:28:03 +02:00
netlabel
netlink	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
netrom	netfilter: Remove spurios included of netfilter.h	2015-06-18 21:14:32 +02:00
nfc	nfc: netlink: Add capability to reply to vendor_cmd with data	2015-08-20 22:00:11 +02:00
openvswitch	openvswitch: Use dev_queue_xmit for vport send.	2015-10-22 06:46:16 -07:00
packet	ipv4: Pass struct net into ip_defrag and ip_check_defrag	2015-10-12 19:44:16 -07:00
phonet	net: Pass kern from net_proto_family.create to sk_alloc	2015-05-11 10:50:17 -04:00
rds	RDS: fix rds-ping deadlock over TCP transport	2015-10-18 22:45:55 -07:00
rfkill	rfkill: Copy "all" global state to other types	2015-09-04 14:26:56 +02:00
rose	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-06-24 02:58:51 -07:00
rxrpc	rxrpc: Replace get_seconds with ktime_get_seconds	2015-09-20 21:53:56 -07:00
sched	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
sctp	net: sctp: avoid incorrect time_t use	2015-10-05 03:16:48 -07:00
sunrpc	Changes for 4.3-rc5	2015-10-15 13:44:35 -07:00
switchdev	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
tipc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
unix	net/unix: fix logic about sk_peek_offset	2015-10-05 06:33:09 -07:00
vmw_vsock	net: Pass kern from net_proto_family.create to sk_alloc	2015-05-11 10:50:17 -04:00
wimax	net:wimax: Fix doucble word "the the" in networking.xml	2015-08-09 22:43:52 -07:00
wireless	cfg80211: reg: fix reg_ignore_cell_hint return type	2015-10-16 09:15:45 +02:00
x25	net: Pass kern from net_proto_family.create to sk_alloc	2015-05-11 10:50:17 -04:00
xfrm	dst: Pass net into dst->output	2015-10-08 04:27:03 -07:00
compat.c
Kconfig	net: Introduce L3 Master device abstraction	2015-09-29 20:40:32 -07:00
Makefile	net: Introduce L3 Master device abstraction	2015-09-29 20:40:32 -07:00
socket.c	net: Add a struct net parameter to sock_create_kern	2015-05-11 10:50:17 -04:00
sysctl_net.c