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remarkable-linux/net
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Xin Long a940c19646 sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf 
[ Upstream commit a0ff660058 ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-31 14:03:46 +01:00
..
6lowpan License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
9p net/9p: Switch to wait_event_killable() 2017-11-30 08:40:49 +00:00
802 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
8021q 8021q: fix a memory leak for VLAN 0 device 2018-01-17 09:45:20 +01:00
appletalk License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atm License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ax25 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
batman-adv
bluetooth Bluetooth: Prevent stack info leak from the EFS element. 2018-01-17 09:45:26 +01:00
bpf
bridge net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks 2018-01-02 20:31:09 +01:00
caif License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
can can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once 2018-01-23 19:58:17 +01:00
ceph libceph: don't WARN() if user tries to add invalid key 2017-11-30 08:40:45 +00:00
core net: qdisc_pkt_len_init() should be more robust 2018-01-31 14:03:45 +01:00
dcb
dccp dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state 2018-01-31 14:03:44 +01:00
decnet License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dns_resolver
dsa net: dsa: return after vlan prepare phase 2017-11-11 15:45:09 +09:00
ethernet
hsr
ieee802154 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ife MAINTAINERS: Update Yotam's E-mail 2017-11-01 12:19:03 +09:00
ipv4 net: tcp: close sock if net namespace is exiting 2018-01-31 14:03:45 +01:00
ipv6 ipv6: ip6_make_skb() needs to clear cork.base.dst 2018-01-31 14:03:45 +01:00
ipx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iucv
kcm fix kcm_clone() 2017-12-17 15:07:59 +01:00
key af_key: fix buffer overread in parse_exthdrs() 2018-01-23 19:58:12 +01:00
l2tp l2tp: cleanup l2tp_tunnel_delete calls 2017-12-20 10:10:31 +01:00
l3mdev
lapb
llc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mac80211 License cleanup: add SPDX license identifiers to some files 2017-11-02 10:04:46 -07:00
mac802154 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mpls License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ncsi
netfilter netfilter: xt_osf: Add missing permission checks 2018-01-31 14:03:41 +01:00
netlabel License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netlink netlink: Add netns check on taps 2018-01-02 20:31:06 +01:00
netrom
nfc NFC: fix device-allocation error return 2017-11-30 08:40:55 +00:00
nsh
openvswitch openvswitch: Fix pop_vlan action for double tagged frames 2018-01-02 20:31:10 +01:00
packet net/packet: fix a race in packet_bind() and packet_notifier() 2017-12-17 15:07:56 +01:00
phonet License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
psample MAINTAINERS: Update Yotam's E-mail 2017-11-01 12:19:03 +09:00
qrtr qrtr: Move to postcore_initcall 2017-11-08 14:32:18 +09:00
rds RDS: null pointer dereference in rds_atomic_free_op 2018-01-17 09:45:21 +01:00
rfkill
rose
rxrpc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sched net/sched: Fix update of lastuse in act modules implementing stats_update 2018-01-17 09:45:22 +01:00
sctp sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf 2018-01-31 14:03:46 +01:00
smc net/smc: use sk_rcvbuf as start for rmb creation 2017-12-14 09:53:05 +01:00
strparser strparser: Use delayed work instead of timer for msg timeout 2017-10-25 10:37:11 +09:00
sunrpc xprtrdma: Don't defer fencing an async RPC's chunks 2017-12-20 10:10:36 +01:00
switchdev
tipc tipc: fix hanging poll() for stream sockets 2018-01-02 20:31:11 +01:00
tls net/tls: Fix inverted error codes to avoid endless loop 2018-01-31 14:03:45 +01:00
unix License cleanup: add SPDX license identifiers to some files 2017-11-02 10:04:46 -07:00
vmw_vsock License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wimax License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wireless License cleanup: add SPDX license identifiers to some files 2017-11-02 10:04:46 -07:00
x25 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfrm xfrm: Fix a race in the xdst pcpu cache. 2018-01-31 14:03:41 +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
sysctl_net.c