Tom Parkin 7b7c0719cd l2tp: avoid deadlock in l2tp stats update ... l2tp's u64_stats writers were incorrectly synchronised, making it possible to deadlock a 64bit machine running a 32bit kernel simply by sending the l2tp code netlink commands while passing data through l2tp sessions. Previous discussion on netdev determined that alternative solutions such as spinlock writer synchronisation or per-cpu data would bring unjustified overhead, given that most users interested in high volume traffic will likely be running 64bit kernels on 64bit hardware. As such, this patch replaces l2tp's use of u64_stats with atomic_long_t, thereby avoiding the deadlock. Ref: http://marc.info/?l=linux-netdev&m=134029167910731&w=2 http://marc.info/?l=linux-netdev&m=134079868111131&w=2 Signed-off-by: Tom Parkin <tparkin@katalix.com> Signed-off-by: James Chapman <jchapman@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2013-03-20 12:10:39 -04:00
..
9p	Revert parts of "hlist: drop the node parameter from iterators"	2013-03-08 15:05:34 -08:00
802	mrp: make mrp_rcv static	2013-02-11 14:16:26 -05:00
8021q	net: proc: change proc_net_remove to remove_proc_entry	2013-02-18 14:53:08 -05:00
appletalk	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
atm	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
ax25	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
batman-adv	batman-adv: verify tt len does not exceed packet len	2013-03-11 22:59:47 +01:00
bluetooth	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
bridge	bridge: Add support for setting BR_ROOT_BLOCK flag.	2013-03-17 12:41:29 -04:00
caif	CAIF: fix sparse warning for caif_usb	2013-03-04 14:12:07 -05:00
can	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2013-03-12 09:22:42 -07:00
core	rtnetlink: Mask the rta_type when range checking	2013-03-17 11:43:40 -04:00
dcb	dcbnl: fix various netlink info leaks	2013-03-10 05:19:26 -04:00
dccp	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
decnet	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
dns_resolver	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2012-12-16 15:40:50 -08:00
dsa	dsa: make dsa_switch_setup check for valid port names	2013-01-21 15:40:12 -05:00
ethernet	net: split eth_mac_addr for better error handling	2013-01-21 14:07:44 -05:00
ieee802154	6lowpan: Fix endianness issue in is_addr_link_local().	2013-03-10 16:49:35 -04:00
ipv4	udp: add encap_destroy callback	2013-03-20 12:10:38 -04:00
ipv6	udp: add encap_destroy callback	2013-03-20 12:10:38 -04:00
ipx	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
irda	net/irda: Raise dtr in non-blocking open	2013-03-06 02:47:05 -05:00
iucv	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
key	afkey: fix a typo	2013-03-07 16:26:45 -05:00
l2tp	l2tp: avoid deadlock in l2tp stats update	2013-03-20 12:10:39 -04:00
lapb	net/lapb: remove depends on CONFIG_EXPERIMENTAL	2013-01-11 11:40:01 -08:00
llc	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
mac80211	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem	2013-03-06 10:21:17 -05:00
mac802154	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
netfilter	ipvs: remove extra rcu lock	2013-03-19 21:21:52 +09:00
netlabel	netlabel: fix build problems when CONFIG_IPV6=n	2013-03-08 11:33:51 -05:00
netlink	genetlink: trigger BUG_ON if a group name is too long	2013-03-20 12:05:51 -04:00
netrom	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
nfc	NFC: llcp: Report error to pending sockets when a device is removed	2013-03-08 17:35:22 +01:00
openvswitch	Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch	2013-03-15 09:00:39 -04:00
packet	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
phonet	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
rds	net/rds: zero last byte for strncpy	2013-03-08 00:35:44 -05:00
rfkill	rfkill: don't use [delayed_]work_pending()	2012-12-28 13:40:16 -08:00
rose	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
rxrpc	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
sched	pkt_sched: sch_qfq: remove a useless invocation of qfq_update_eligible	2013-03-06 02:47:05 -05:00
sctp	sctp: don't break the loop while meeting the active_path so as to find the matched transport	2013-03-13 10:09:55 -04:00
sunrpc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2013-03-13 15:47:50 -07:00
tipc	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
unix	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
vmw_vsock	VSOCK: Don't reject PF_VSOCK protocol	2013-02-18 15:02:51 -05:00
wimax
wireless	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem	2013-03-06 10:21:17 -05:00
x25	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
xfrm	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
compat.c	make get_file() return its argument	2012-09-26 21:10:25 -04:00
Kconfig	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
Makefile	VSOCK: Introduce VM Sockets	2013-02-10 19:41:08 -05:00
nonet.c
socket.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
sysctl_net.c	user_ns: get rid of duplicate code in net_ctl_permissions	2012-11-18 20:32:45 -05:00