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Karsten Graul ea438df46e net/smc: receive pending data after RCV_SHUTDOWN 
[ Upstream commit 107529e31a87acd475ff6a0f82745821b8f70fec ]

smc_rx_recvmsg() first checks if data is available, and then if
RCV_SHUTDOWN is set. There is a race when smc_cdc_msg_recv_action() runs
in between these 2 checks, receives data and sets RCV_SHUTDOWN.
In that case smc_rx_recvmsg() would return from receive without to
process the available data.
Fix that with a final check for data available if RCV_SHUTDOWN is set.
Move the check for data into a function and call it twice.
And use the existing helper smc_rx_data_available().

Fixes: 952310ccf2 ("smc: receive data from RMBE")
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-27 14:51:18 +01:00
..
6lowpan 6lowpan: Off by one handling ->nexthdr 2020-01-27 14:50:41 +01:00
9p 9p: Transport error uninitialized 2019-10-11 18:21:12 +02:00
802
8021q vlan: vlan_changelink() should propagate errors 2020-01-12 12:17:28 +01:00
appletalk appletalk: Set error code if register_snap_client failed 2019-12-13 08:52:59 +01:00
atm net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
ax25 ax25: enforce CAP_NET_RAW for raw sockets 2019-10-05 13:09:32 +02:00
batman-adv batman-adv: Fix DAT candidate selection on little endian systems 2020-01-23 08:21:34 +01:00
bluetooth Bluetooth: Fix memory leak in hci_connect_le_scan 2020-01-09 10:19:04 +01:00
bpf
bpfilter signal/bpfilter: Fix bpfilter_kernl to use send_sig not force_sig 2020-01-27 14:50:51 +01:00
bridge netfilter: ebtables: CONFIG_COMPAT: reject trailing data after last rule 2020-01-27 14:50:47 +01:00
caif net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
can can: gw: Fix error path of cgw_module_init 2019-08-29 08:28:30 +02:00
ceph libceph: fix PG split vs OSD (re)connect race 2019-08-29 08:28:50 +02:00
core net: avoid possible false sharing in sk_leave_memory_pressure() 2020-01-27 14:51:18 +01:00
dcb
dccp dccp: Fix memleak in __feat_register_sp 2020-01-17 19:46:58 +01:00
decnet net: add bool confirm_neigh parameter for dst_ops.update_pmtu 2020-01-04 19:13:37 +01:00
dns_resolver
dsa net: dsa: Avoid null pointer when failing to connect to PHY 2020-01-27 14:50:34 +01:00
ethernet net: add annotations on hh->hh_len lockless accesses 2020-01-09 10:19:09 +01:00
hsr hsr: reset network header when supervision frame is created 2020-01-17 19:47:00 +01:00
ieee802154 inet: frags: call inet_frags_fini() after unregister_pernet_subsys() 2020-01-27 14:50:51 +01:00
ife
ipv4 tcp: annotate lockless access to tcp_memory_pressure 2020-01-27 14:51:18 +01:00
ipv6 ip6erspan: remove the incorrect mtu limit for ip6erspan 2020-01-27 14:51:17 +01:00
iucv net/af_iucv: always register net_device notifier 2020-01-27 14:50:56 +01:00
kcm
key
l2tp l2tp: Fix possible NULL pointer dereference 2020-01-27 14:50:46 +01:00
l3mdev
lapb
llc llc: fix sk_buff refcounting in llc_conn_state_process() 2020-01-27 14:51:17 +01:00
mac80211 mac80211: accept deauth frames in IBSS mode 2020-01-27 14:51:16 +01:00
mac802154
mpls mpls: fix warning with multi-label encap 2020-01-27 14:50:54 +01:00
ncsi
netfilter netfilter: ctnetlink: honor IPS_OFFLOAD flag 2020-01-27 14:51:09 +01:00
netlabel
netlink
netrom
nfc net: nfc: nci: fix a possible sleep-in-atomic-context bug in nci_uart_tty_receive() 2019-12-31 16:34:38 +01:00
nsh
openvswitch openvswitch: support asymmetric conntrack 2019-12-21 10:57:14 +01:00
packet packet: in recvmsg msg_name return at least sizeof sockaddr_ll 2020-01-27 14:50:43 +01:00
phonet net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
psample net: psample: fix skb_over_panic 2019-12-05 09:21:30 +01:00
qrtr net: qrtr: fix memort leak in qrtr_tun_write_iter 2019-12-13 08:52:58 +01:00
rds net/rds: Fix 'ib_evt_handler_call' element in 'rds_ib_stat_names' 2020-01-27 14:51:13 +01:00
rfkill rfkill: Fix incorrect check to avoid NULL pointer dereference 2020-01-12 12:17:17 +01:00
rose
rxrpc rxrpc: Fix trace-after-put looking at the put connection record 2020-01-27 14:51:16 +01:00
sched act_mirred: Fix mirred_init_module error handling 2020-01-27 14:51:18 +01:00
sctp sctp: add chunks to sk_backlog when the newsk sk_socket is not set 2020-01-27 14:51:17 +01:00
smc net/smc: receive pending data after RCV_SHUTDOWN 2020-01-27 14:51:18 +01:00
strparser
sunrpc xprtrdma: Fix use-after-free in rpcrdma_post_recvs 2020-01-27 14:50:59 +01:00
switchdev
tipc tipc: reduce risk of wakeup queue starvation 2020-01-27 14:51:02 +01:00
tls net/tls: fix socket wmem accounting on fallback with netem 2020-01-27 14:51:01 +01:00
unix af_unix: add compat_ioctl support 2020-01-17 19:47:07 +01:00
vmw_vsock VSOCK: bind to random port for VMADDR_PORT_ANY 2019-12-05 09:20:19 +01:00
wimax
wireless cfg80211: regulatory: make initialization more robust 2020-01-27 14:49:57 +01:00
x25 net/x25: fix null_x25_address handling 2019-12-13 08:52:15 +01:00
xdp xsk: avoid store-tearing when assigning umem 2020-01-27 14:51:10 +01:00
xfrm xfrm interface: ifname may be wrong in logs 2020-01-27 14:51:01 +01:00
compat.c
Kconfig
Makefile
socket.c compat_ioctl: handle SIOCOUTQNSD 2020-01-17 19:47:07 +01:00
sysctl_net.c