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Cong Wang cfbe800b8b 802: fix a possible race condition 
(Resend with a better changelog)

garp_pdu_queue() should ways be called with this spin lock.
garp_uninit_applicant() only holds rtnl lock which is not
enough here.  A possible race can happen as garp_pdu_rcv()
is called in BH context:

	garp_pdu_rcv()
	  |->garp_pdu_parse_msg()
	    |->garp_pdu_parse_attr()
	      |-> garp_gid_event()

Found by code inspection.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: David Ward <david.ward@ll.mit.edu>
Cc: "Jorge Boncompte [DTI2]" <jorge@dti2.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2013-04-07 17:04:17 -04:00
..
9p Revert parts of "hlist: drop the node parameter from iterators" 2013-03-08 15:05:34 -08:00
802 802: fix a possible race condition 2013-04-07 17:04:17 -04:00
8021q 8021q: fix a potential use-after-free 2013-03-24 17:27:28 -04:00
appletalk hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
atm net: add ETH_P_802_3_MIN 2013-03-28 01:20:42 -04:00
ax25 hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
batman-adv batman-adv: use seq_puts instead of seq_printf when the format is constant 2013-03-27 10:29:55 +01:00
bluetooth net: fix smatch warnings inside datagram_poll 2013-04-02 16:59:16 -04:00
bridge Merge branch 'master' of git://1984.lsi.us.es/nf-next 2013-04-07 12:22:06 -04:00
caif CAIF: fix indentation for function arguments 2013-03-07 16:24:45 -05:00
can rtnetlink: Remove passing of attributes into rtnl_doit functions 2013-03-22 10:31:16 -04:00
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 Merge branch 'master' of git://1984.lsi.us.es/nf-next 2013-04-07 12:22:06 -04:00
dcb rtnetlink: Remove passing of attributes into rtnl_doit functions 2013-03-22 10:31:16 -04:00
dccp tcp: Remove TCPCT 2013-03-17 14:35:13 -04:00
decnet net-next: replace obsolete NLMSG_* with type safe nlmsg_* 2013-03-28 14:25:25 -04:00
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: fix freeing of sparse port allocation 2013-03-25 12:23:41 -04:00
ethernet net: add ETH_P_802_3_MIN 2013-03-28 01:20:42 -04:00
ieee802154 netlink: fix the warning introduced by netlink API replacement 2013-03-29 14:44:37 -04:00
ipv4 Merge branch 'master' of git://1984.lsi.us.es/nf-next 2013-04-07 12:22:06 -04:00
ipv6 Merge branch 'master' of git://1984.lsi.us.es/nf-next 2013-04-07 12:22:06 -04:00
ipx hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
irda net/irda: add missing error path release_sock call 2013-03-20 12:23:13 -04:00
iucv net: fix smatch warnings inside datagram_poll 2013-04-02 16:59:16 -04:00
key Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2013-03-27 14:07:04 -04:00
l2tp l2tp: calling the ref() instead of deref() 2013-03-22 14:39:24 -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 git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-01 13:36:50 -04:00
mac802154 mac802154: add mac802154_dev_get_dsn() 2013-03-26 12:37:58 -04:00
netfilter Merge branch 'master' of git://1984.lsi.us.es/nf-next 2013-04-07 12:22:06 -04:00
netlabel netlabel: fix build problems when CONFIG_IPV6=n 2013-03-08 11:33:51 -05:00
netlink net-next: replace obsolete NLMSG_* with type safe nlmsg_* 2013-03-28 14:25:25 -04:00
netrom hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
nfc net: fix smatch warnings inside datagram_poll 2013-04-02 16:59:16 -04:00
openvswitch net: add ETH_P_802_3_MIN 2013-03-28 01:20:42 -04:00
packet net: switch to use skb_probe_transport_header() 2013-03-27 12:48:31 -04:00
phonet rtnetlink: Remove passing of attributes into rtnl_doit functions 2013-03-22 10:31:16 -04:00
rds net/rds: zero last byte for strncpy 2013-03-08 00:35:44 -05:00
rfkill net: rfkill: Fix sparse warning in rfkill-regulator.c 2013-03-06 16:35:41 +01:00
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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-03 01:31:54 -04:00
sctp net: add option to enable error queue packets waking select 2013-03-31 19:44:20 -04:00
sunrpc NFS client bugfixes for Linux 3.9 2013-03-26 14:23:45 -07:00
tipc net-next: replace obsolete NLMSG_* with type safe nlmsg_* 2013-03-28 14:25:25 -04:00
unix net: fix smatch warnings inside datagram_poll 2013-04-02 16:59:16 -04:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-03 01:31:54 -04:00
wimax
…
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-01 13:36:50 -04:00
x25 hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-01 13:36:50 -04:00
Kconfig netlink: Diag core and basic socket info dumping (v2) 2013-03-21 12:38:03 -04:00
Makefile VSOCK: Introduce VM Sockets 2013-02-10 19:41:08 -05:00
compat.c make get_file() return its argument 2012-09-26 21:10:25 -04:00
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