linux/net
Xin Long a0ff660058 sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf
After commit cea0cc80a6 ("sctp: use the right sk after waking up from
wait_buf sleep"), it may change to lock another sk if the asoc has been
peeled off in sctp_wait_for_sndbuf.

However, the asoc's new sk could be already closed elsewhere, as it's in
the sendmsg context of the old sk that can't avoid the new sk's closing.
If the sk's last one refcnt is held by this asoc, later on after putting
this asoc, the new sk will be freed, while under it's own lock.

This patch is to revert that commit, but fix the old issue by returning
error under the old sk's lock.

Fixes: cea0cc80a6 ("sctp: use the right sk after waking up from wait_buf sleep")
Reported-by: syzbot+ac6ea7baa4432811eb50@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-16 14:22:51 -05:00
..
6lowpan License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
9p 9p: add missing module license for xen transport 2018-01-15 13:13:53 -05:00
802 treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
8021q 8021q: fix a memory leak for VLAN 0 device 2018-01-10 15:31:07 -05:00
appletalk treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
atm treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
batman-adv batman-adv: Fix lock for ogm cnt access in batadv_iv_ogm_calc_tq 2017-12-04 11:47:33 +01:00
bluetooth treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
bpf
bridge net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks 2017-12-18 13:29:01 -05:00
caif caif_usb: use strlcpy() instead of strncpy() 2018-01-10 15:06:14 -05:00
can treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
ceph We have a set of file locking improvements from Zheng, rbd rw/ro 2017-11-21 05:38:32 -10:00
core net: Allow neigh contructor functions ability to modify the primary_key 2018-01-15 14:53:43 -05:00
dcb
dccp dccp: CVE-2017-8824: use-after-free in DCCP code 2017-12-05 18:08:53 -05:00
decnet treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
dns_resolver
dsa net: remove duplicate includes 2017-12-13 13:18:46 -05:00
ethernet
hsr
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
ife
ipv4 ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY 2018-01-15 14:53:43 -05:00
ipv6 ipv6: ip6_make_skb() needs to clear cork.base.dst 2018-01-15 14:19:32 -05:00
ipx Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
iucv
kcm make sock_alloc_file() do sock_release() on failures 2017-12-05 18:39:29 -05:00
key af_key: Fix memory leak in key_notify_policy. 2018-01-10 09:45:11 +01:00
l2tp l2tp: exit_net cleanup check added 2017-11-14 15:45:53 +09:00
l3mdev
lapb treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
llc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-11-15 11:56:19 -08:00
mac80211 mac80211: mesh: drop frames appearing to be from us 2018-01-04 15:51:53 +01:00
mac802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
mpls Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
ncsi treewide: setup_timer() -> timer_setup() (2 field) 2017-11-21 15:57:09 -08:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-08 20:21:39 -08:00
netlabel net/netlabel: Add list_next_rcu() in rcu_dereference(). 2017-11-18 10:32:41 +09:00
netlink netlink: extack needs to be reset each time through loop 2018-01-15 13:50:07 -05:00
netrom treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
nfc treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
nsh openvswitch: enable NSH support 2017-11-08 16:12:33 +09:00
openvswitch Revert "openvswitch: Add erspan tunnel support." 2018-01-15 14:33:16 -05:00
packet net/packet: fix a race in packet_bind() and packet_notifier() 2017-11-28 11:13:30 -05:00
phonet phonet: exit_net cleanup check added 2017-11-14 15:45:53 +09:00
psample
qrtr Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
rds RDS: null pointer dereference in rds_atomic_free_op 2018-01-04 14:19:26 -05:00
rfkill
rose treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
rxrpc rxrpc: Use correct netns source in rxrpc_release_sock() 2017-12-03 10:05:20 -05:00
sched net/sched: Fix update of lastuse in act modules implementing stats_update 2018-01-02 13:27:52 -05:00
sctp sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf 2018-01-16 14:22:51 -05:00
smc net/smc: Fix preinitialization of buf_desc in __smc_buf_create() 2017-11-24 01:33:34 +09:00
strparser strparser: Call sock_owned_by_user_nocheck 2017-12-28 14:28:22 -05:00
sunrpc NFS client fixes for Linux 4.15-rc4 2017-12-16 13:12:53 -08:00
switchdev net: bridge: Add/del switchdev object on host join/leave 2017-11-10 13:41:40 +09:00
tipc tipc: fix a memory leak in tipc_nl_node_get_link() 2018-01-15 13:45:50 -05:00
tls net/tls: Fix inverted error codes to avoid endless loop 2018-01-15 14:21:57 -05:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
vmw_vsock VSOCK: fix outdated sk_state value in hvs_release() 2017-12-05 15:07:37 -05:00
wimax License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wireless nl80211: Check for the required netlink attribute presence 2018-01-04 15:22:02 +01:00
x25 treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
xfrm xfrm: Fix a race in the xdst pcpu cache. 2018-01-10 12:14:28 +01:00
compat.c
Kconfig
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
socket.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-01-10 17:55:42 -08:00
sysctl_net.c