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581409dacc
linux/net
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Xin Long 581409dacc sctp: disable BH in sctp_for_each_endpoint 
Now sctp holds read_lock when foreach sctp_ep_hashtable without disabling
BH. If CPU schedules to another thread A at this moment, the thread A may
be trying to hold the write_lock with disabling BH.

As BH is disabled and CPU cannot schedule back to the thread holding the
read_lock, while the thread A keeps waiting for the read_lock. A dead
lock would be triggered by this.

This patch is to fix this dead lock by calling read_lock_bh instead to
disable BH when holding the read_lock in sctp_for_each_endpoint.

Fixes: 626d16f50f ("sctp: export some apis or variables for sctp_diag and reuse some for proc")
Reported-by: Xiumei Mu <xmu@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:18:10 -04:00
..
6lowpan 6lowpan: Don't set IFF_NO_QUEUE 2017-04-12 22:02:40 +02:00
9p xen: fixes for 4.12 rc2 2017-05-19 15:06:48 -07:00
802
8021q net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
appletalk lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
atm neighbour: fix nlmsg_pid in notifications 2017-03-22 10:48:49 -07:00
ax25 net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
batman-adv net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
bluetooth net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
bpf bpf: Align packet data properly in program testing framework. 2017-05-02 11:46:28 -04:00
bridge net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
caif net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
can can: af_can: namespace support: fix lockdep splat: properly initialize spin_lock 2017-06-09 11:39:23 +02:00
ceph libceph: cleanup old messages according to reconnect seq 2017-05-24 18:10:51 +02:00
core net: rps: send out pending IPI's on CPU hotplug 2017-06-09 15:35:01 -04:00
dcb net: rtnetlink: plumb extended ack to doit function 2017-04-17 15:35:38 -04:00
dccp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-05-15 15:50:49 -07:00
decnet decnet: dn_rtmsg: Improve input length sanitization in dnrmg_receive_user_skb 2017-06-08 10:51:22 -04:00
dns_resolver Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
dsa net: dsa: Fix stale cpu_switch reference after unbind then bind 2017-06-04 22:55:17 -04:00
ethernet
hsr net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
ieee802154 net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
ife
ipv4 net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
ipv6 ila_xlat: add missing hash secret initialization 2017-06-08 15:36:56 -04:00
ipx ipx: call ipxitf_put() in ioctl error path 2017-05-02 15:34:53 -04:00
irda net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
iucv net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
kcm kcm: remove a useless copy_from_user() 2017-04-17 13:28:48 -04:00
key af_key: Fix slab-out-of-bounds in pfkey_compile_policy. 2017-05-08 08:03:01 +02:00
l2tp l2tp: cast l2tp traffic counter to unsigned 2017-06-10 16:14:27 -04:00
l3mdev
lapb
llc net: llc: add lock_sock in llc_ui_bind to avoid a race condition 2017-05-26 14:20:29 -04:00
mac80211 mac80211: free netdev on dev_alloc_name() error 2017-06-09 15:40:15 -04:00
mac802154 net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
mpls mpls: fix clearing of dead nh_flags on link up 2017-05-31 14:48:24 -04:00
ncsi
netfilter netfilter: ctnetlink: fix incorrect nf_ct_put during hash resize 2017-05-24 11:26:01 +02:00
netlabel netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
netlink netlink: don't send unknown nsid 2017-06-01 11:49:39 -04:00
netrom net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
nfc NFC 4.12 pull request 2017-04-21 15:29:40 -04:00
openvswitch net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
packet net/packet: fix missing net_device reference release 2017-05-15 14:22:12 -04:00
phonet net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
psample
qrtr Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-21 20:23:53 -07:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00
rfkill
rose net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
rxrpc rxrpc: Trace client call connection 2017-04-06 11:10:41 +01:00
sched net: sched: cls_matchall: fix null pointer dereference 2017-05-22 14:54:16 -04:00
sctp sctp: disable BH in sctp_for_each_endpoint 2017-06-10 16:18:10 -04:00
smc net/smc: Add warning about remote memory exposure 2017-05-16 14:49:43 -04:00
strparser strparser: destroy workqueue on module exit 2017-03-03 20:43:26 -08:00
sunrpc SUNRPC: ensure correct error is reported by xs_tcp_setup_socket() 2017-05-31 12:26:44 -04:00
switchdev netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
tipc tipc: make macro tipc_wait_for_cond() smp safe 2017-05-11 22:19:30 -04:00
unix af_unix: Add sockaddr length checks before accessing sa_family in bind and connect handlers 2017-06-09 10:10:24 -04:00
vmw_vsock vsock: use new wait API for vsock_stream_sendmsg() 2017-05-22 14:39:36 -04:00
wimax
wireless cfg80211: make cfg80211_sched_scan_results() work from atomic context 2017-05-23 14:36:46 +02:00
x25 net: x25: fix one potential use-after-free issue 2017-05-18 10:05:40 -04:00
xfrm xfrm: fix state migration copy replay sequence numbers 2017-05-19 12:49:13 +02:00
compat.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-02-22 10:15:09 -08:00
Kconfig
Makefile bpf: introduce BPF_PROG_TEST_RUN command 2017-04-01 12:45:57 -07:00
socket.c l2tp: device MTU setup, tunnel socket needs a lock 2017-04-17 13:01:48 -04:00
sysctl_net.c sysctl: Remove dead register_sysctl_root 2017-04-16 23:42:49 -05:00