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Nicolas Dichtel 576b7cd2f6 netns: don't allocate an id for dead netns 
First, let's explain the problem.
Suppose you have an ipip interface that stands in the netns foo and its link
part in the netns bar (so the netns bar has an nsid into the netns foo).
Now, you remove the netns bar:
 - the bar nsid into the netns foo is removed
 - the netns exit method of ipip is called, thus our ipip iface is removed:
   => a netlink message is built in the netns foo to advertise this deletion
   => this netlink message requests an nsid for bar, thus a new nsid is
      allocated for bar and never removed.

This patch adds a check in peernet2id() so that an id cannot be allocated for
a netns which is currently destroyed.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2015-04-03 12:36:31 -04:00
..
6lowpan net/6lowpan: Remove FSF address from GPL statement. 2014-12-05 12:43:04 +01:00
9p 9p/trans_virtio: fix hot-unplug 2015-03-13 15:55:41 +10:30
802
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8021q vlan: advertise link netns via netlink 2015-01-23 17:51:15 -08:00
appletalk
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atm put iov_iter into msghdr 2014-12-09 16:29:03 -05:00
ax25
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batman-adv batman-adv: Kconfig, Add missing DEBUG_FS dependency 2015-01-07 22:17:11 +01:00
bluetooth Bluetooth: Fix potential NULL dereference 2015-02-03 09:02:12 +01:00
bridge bridge: reset bridge mtu after deleting an interface 2015-03-14 19:12:38 -04:00
caif caif: fix MSG_OOB test in caif_seqpkt_recvmsg() 2015-03-15 22:19:17 -04:00
can can: add missing initialisations in CAN related skbuffs 2015-03-09 10:22:24 +01:00
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2015-02-19 14:14:42 -08:00
core netns: don't allocate an id for dead netns 2015-04-03 12:36:31 -04:00
dcb
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dccp net: introduce helper macro for_each_cmsghdr 2014-12-10 22:41:55 -05:00
decnet net: move fib_rules_unregister() under rtnl lock 2015-04-02 20:52:34 -04:00
dns_resolver
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dsa net: dsa: Set valid phy interface type 2015-02-17 10:37:39 -08:00
ethernet net: Add Transparent Ethernet Bridging GRO support. 2015-01-02 15:46:41 -05:00
hsr net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface. 2015-03-01 13:40:23 -05:00
ieee802154 netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
ipv4 net: move fib_rules_unregister() under rtnl lock 2015-04-02 20:52:34 -04:00
ipv6 ip6mr: call del_timer_sync() in ip6mr_free_table() 2015-04-02 20:52:35 -04:00
ipx
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irda TTY/Serial fixes for 4.0-rc3 2015-03-08 12:25:40 -07:00
iucv af_iucv: fix AF_IUCV sendmsg() errno 2015-03-31 16:06:50 -04:00
key
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l2tp netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
lapb
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llc net: llc: use correct size for sysctl timeout entries 2015-01-25 00:23:21 -08:00
mac80211 mac80211: fix RX A-MPDU session reorder timer deletion 2015-04-01 14:35:01 +02:00
mac802154 mac802154: fix kbuild test robot warning 2015-01-03 01:51:51 +01:00
mpls net: mark some potential candidates __read_mostly 2015-01-30 17:58:39 -08:00
netfilter netfilter: nft_compat: set IP6T_F_PROTO flag if protocol is set 2015-03-22 19:32:05 +01:00
netlabel Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2015-02-11 20:25:11 -08:00
netlink rhashtable: remove indirection for grow/shrink decision functions 2015-02-27 16:06:02 -05:00
netrom
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nfc NFC: nci: Move NFCEE discovery logic 2015-02-04 09:15:18 +01:00
openvswitch openvswitch: Return vport module ref before destruction 2015-03-31 15:59:50 -04:00
packet net: delete stale packet_mclist entries 2015-03-09 16:17:43 -04:00
phonet phonet netlink: allow multiple messages per skb in route dump 2015-01-19 16:20:17 -05:00
rds rds: avoid potential stack overflow 2015-03-12 00:28:01 -04:00
rfkill Last round of updates for net-next: 2015-02-04 14:57:45 -08:00
rose
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rxrpc rxrpc: bogus MSG_PEEK test in rxrpc_recvmsg() 2015-03-15 22:20:09 -04:00
sched act_bpf: allow non-default TC_ACT opcodes as BPF exec outcome 2015-03-17 22:15:06 -04:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-02-05 14:33:28 -08:00
sunrpc sunrpc: make debugfs file creation failure non-fatal 2015-03-31 14:15:08 -04:00
switchdev Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2015-02-19 10:36:45 -08:00
tipc tipc: fix a slab object leak 2015-03-31 23:10:08 -04:00
unix net: remove sock_iocb 2015-01-28 23:15:07 -08:00
vmw_vsock vmci: propagate msghdr all way down to __qp_memcpy_to_queue() 2015-02-04 01:34:14 -05:00
wimax
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wireless nl80211: ignore HT/VHT capabilities without QoS/WMM 2015-03-16 09:36:11 +01:00
x25
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xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2015-03-16 16:16:49 -04:00
Kconfig kconfig: use bool instead of boolean for type definition attributes 2015-01-07 13:08:04 +01:00
Makefile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-12-16 15:53:03 -08:00
compat.c net: compat: Update get_compat_msghdr() to match copy_msghdr_from_user() behaviour 2015-03-20 16:31:09 -04:00
socket.c net: validate the range we feed to iov_iter_init() in sys_sendto/sys_recvfrom 2015-03-20 16:38:06 -04:00
sysctl_net.c
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