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Xin Long 1cceda7849 sctp: fix the issue sctp_diag uses lock_sock in rcu_read_lock 
When sctp dumps all the ep->assocs, it needs to lock_sock first,
but now it locks sock in rcu_read_lock, and lock_sock may sleep,
which would break rcu_read_lock.

This patch is to get and hold one sock when traversing the list.
After that and get out of rcu_read_lock, lock and dump it. Then
it will traverse the list again to get the next one until all
sctp socks are dumped.

For sctp_diag_dump_one, it fixes this issue by holding asoc and
moving cb() out of rcu_read_lock in sctp_transport_lookup_process.

Fixes: 8f840e47f1 ("sctp: add the sctp_diag.c file")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2016-09-30 02:08:57 -04:00
..
6lowpan 6lowpan: ndisc: set invalid unicast short addr to unspec 2016-07-08 13:23:12 +02:00
9p 9p/trans_virtio: use kvfree() for iov_iter_get_pages_alloc() 2016-08-09 13:42:36 +03:00
802
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8021q net: remove type_check from dev_get_nest_level() 2016-08-13 15:15:54 -07:00
appletalk
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atm net: add dev arg to ndo_neigh_construct/destroy 2016-07-05 09:06:28 -07:00
ax25 AX.25: Close socket connection on session completion 2016-06-18 20:55:34 -07:00
batman-adv batman-adv: fix elp packet data reservation 2016-08-26 15:22:31 +02:00
bluetooth Bluetooth: Fix hci_sock_recvmsg when MSG_TRUNC is not set 2016-08-25 20:58:47 +02:00
bridge net: bridge: don't increment tx_dropped in br_do_proxy_arp 2016-09-01 16:35:30 -07:00
caif caif: Remove unneeded header file 2016-06-28 05:26:14 -04:00
can can: only call can_stat_update with procfs 2016-06-23 11:23:49 +02:00
ceph libceph: using kfree_rcu() to simplify the code 2016-08-08 21:41:42 +02:00
core cgroup: duplicate cgroup reference when cloning sockets 2016-09-19 15:36:17 -07:00
dcb
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dccp Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-07-29 17:38:46 -07:00
decnet net: fix decnet rtnexthop parsing 2016-07-05 14:08:47 -07:00
dns_resolver KEYS: Add a facility to restrict new links into a keyring 2016-04-11 22:37:37 +01:00
dsa net: dsa: support switchdev ageing time attr 2016-07-19 19:42:01 -07:00
ethernet
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hsr net/hsr: Use setup_timer and mod_timer. 2016-05-16 14:00:43 -04:00
ieee802154 ieee802154: 6lowpan: fix intra pan id check 2016-07-08 13:23:12 +02:00
ipv4 ipmr, ip6mr: fix scheduling while atomic and a deadlock with ipmr_get_route 2016-09-25 23:41:39 -04:00
ipv6 ipmr, ip6mr: fix scheduling while atomic and a deadlock with ipmr_get_route 2016-09-25 23:41:39 -04:00
ipx
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irda irda: Free skb on irda_accept error path. 2016-09-17 09:59:31 -04:00
iucv Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-07-29 17:38:46 -07:00
kcm kcm: fix a socket double free 2016-08-31 21:00:19 -07:00
key
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l2tp l2tp: fix use-after-free during module unload 2016-09-02 11:44:44 -07:00
l3mdev net: vrf: Implement get_saddr for IPv6 2016-06-17 21:25:29 -07:00
lapb net/lapb: tuse %*ph to dump buffers 2016-05-29 22:33:25 -07:00
llc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-05-09 15:59:24 -04:00
mac80211 mac80211: reject TSPEC TIDs (TSIDs) for aggregation 2016-09-15 10:08:52 +02:00
mac802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
mpls mpls: allow routes on ipip and sit devices 2016-07-09 17:45:56 -04:00
ncsi net/ncsi: avoid maybe-uninitialized warning 2016-07-25 10:32:59 -07:00
netfilter netfilter: synproxy: Check oom when adding synproxy and seqadj ct extensions 2016-09-13 10:50:56 +02:00
netlabel netlabel: Implement CALIPSO config functions for SMACK. 2016-06-27 15:06:18 -04:00
netlink net/netlink/af_netlink.h: Remove unused structure. 2016-06-09 22:26:24 -07:00
netrom
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nfc NFC: digital: Fix RTOX supervisor PDU handling 2016-07-11 02:02:03 +02:00
openvswitch openvswitch: do not ignore netdev errors when creating tunnel vports 2016-08-10 23:13:23 -07:00
packet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-07-24 00:53:32 -04:00
phonet
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qrtr Merge tag 'qcom-soc-for-4.7-2' into net-next 2016-05-17 14:11:19 -04:00
rds RDS: TCP: Enable multipath RDS for TCP 2016-07-15 11:36:58 -07:00
rfkill rfkill: Use switch to demux userspace operations 2016-04-05 10:48:53 +02:00
rose rose: limit sk_filter trim to payload 2016-07-13 11:53:40 -07:00
rxrpc rxrpc: Free packets discarded in data_ready 2016-08-09 17:13:56 +01:00
sched act_ife: Fix false encoding 2016-09-27 09:53:17 -04:00
sctp sctp: fix the issue sctp_diag uses lock_sock in rcu_read_lock 2016-09-30 02:08:57 -04:00
sunrpc Fix a memory corruption bug that I introduced in 4.7. 2016-09-16 17:00:26 -07:00
switchdev net/switchdev: Export the same parent ID service function 2016-07-14 13:34:29 -07:00
tipc tipc: fix random link resets while adding a second bearer 2016-09-01 10:12:26 -07:00
unix af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock' 2016-09-04 13:29:29 -07:00
vmw_vsock VSOCK: Don't dec ack backlog twice for rejected connections 2016-09-27 07:59:25 -04:00
wimax
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wireless nl80211: validate number of probe response CSA counters 2016-09-13 20:19:27 +02:00
x25 net: fix a kernel infoleak in x25 module 2016-05-09 22:45:33 -04:00
xfrm xfrm: Fix memory leak of aead algorithm name 2016-09-19 12:08:58 +02:00
Kconfig net/ncsi: Resource management 2016-07-19 20:49:16 -07:00
Makefile net/ncsi: Resource management 2016-07-19 20:49:16 -07:00
compat.c packet: compat support for sock_fprog 2016-06-09 23:41:03 -07:00
socket.c fs: poll/select/recvmmsg: use timespec64 for timeout events 2016-05-19 19:12:14 -07:00
sysctl_net.c net: Use ns_capable_noaudit() when determining net sysctl permissions 2016-06-06 20:16:22 +10:00