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guodeqing eb2c32de1c ipvs: fix the connection sync failed in some cases 
[ Upstream commit 8210e344cc ]

The sync_thread_backup only checks sk_receive_queue is empty or not,
there is a situation which cannot sync the connection entries when
sk_receive_queue is empty and sk_rmem_alloc is larger than sk_rcvbuf,
the sync packets are dropped in __udp_enqueue_schedule_skb, this is
because the packets in reader_queue is not read, so the rmem is
not reclaimed.

Here I add the check of whether the reader_queue of the udp sock is
empty or not to solve this problem.

Fixes: 2276f58ac5 ("udp: use a separate rx queue for packet reception")
Reported-by: zhouxudong <zhouxudong8@huawei.com>
Signed-off-by: guodeqing <geffrey.guo@huawei.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2020-07-29 10:18:34 +02:00
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6lowpan
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9p
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802
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8021q
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appletalk
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atm
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ax25 ax25: fix setsockopt(SO_BINDTODEVICE) 2020-06-03 08:20:39 +02:00
batman-adv batman-adv: Revert "disable ethtool link speed detection when auto negotiation off" 2020-06-22 09:30:56 +02:00
bluetooth Bluetooth: Add SCO fallback for invalid LMP parameters error 2020-06-22 09:30:54 +02:00
bpf
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bpfilter net/bpfilter: remove superfluous testing message 2020-04-21 09:04:53 +02:00
bridge bridge: mcast: Fix MLD2 Report IPv6 payload length check 2020-07-22 09:32:46 +02:00
caif
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can
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ceph libceph: don't omit recovery_deletes in target_copy() 2020-07-22 09:33:17 +02:00
core cgroup: fix cgroup_sk_alloc() for sk_clone_lock() 2020-07-22 09:32:49 +02:00
dcb
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dccp dccp: Fix possible memleak in dccp_init and dccp_fini 2020-06-17 16:40:32 +02:00
decnet
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dns_resolver KEYS: Don't write out to userspace while holding key semaphore 2020-04-23 10:36:45 +02:00
dsa net: dsa: declare lockless TX feature for slave ports 2020-06-03 08:21:38 +02:00
ethernet
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hsr hsr: check protocol version in hsr_newlink() 2020-04-21 09:04:44 +02:00
ieee802154
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ife
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ipv4 ip: Fix SO_MARK in RST, ACK and ICMP packets 2020-07-22 09:32:50 +02:00
ipv6 ip: Fix SO_MARK in RST, ACK and ICMP packets 2020-07-22 09:32:50 +02:00
iucv
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kcm
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key
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l2tp l2tp: remove skb_dst_set() from l2tp_xmit_skb() 2020-07-22 09:32:47 +02:00
l3mdev
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lapb
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llc llc: make sure applications use ARPHRD_ETHER 2020-07-22 09:32:47 +02:00
mac80211 mac80211: allow rx of mesh eapol frames with default rx key 2020-07-29 10:18:26 +02:00
mac802154
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mpls
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ncsi
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netfilter ipvs: fix the connection sync failed in some cases 2020-07-29 10:18:34 +02:00
netlabel netlabel: cope with NULL catmap 2020-05-20 08:20:08 +02:00
netlink genetlink: remove genl_bind 2020-07-22 09:32:46 +02:00
netrom net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node 2020-04-29 16:33:08 +02:00
nfc
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nsh
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openvswitch openvswitch: take into account de-fragmentation/gso_size in execute_check_pkt_len 2020-06-30 15:36:45 -04:00
packet
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phonet
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psample
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qrtr net: qrtr: Fix an out of bounds read qrtr_endpoint_post() 2020-07-16 08:16:36 +02:00
rds net/rds: Use ERR_PTR for rds_message_alloc_sgs() 2020-05-20 08:20:27 +02:00
rfkill
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rose
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rxrpc rxrpc: Fix afs large storage transmission performance drop 2020-07-09 09:37:52 +02:00
sched sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-22 09:32:48 +02:00
sctp sctp: Don't advertise IPv4 addresses if ipv6only is set on the socket 2020-06-30 15:36:45 -04:00
smc
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strparser
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sunrpc xprtrdma: fix incorrect header size calculations 2020-07-22 09:33:03 +02:00
switchdev
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tipc tipc: block BH before using dst_cache 2020-06-03 08:21:03 +02:00
tls bpf: Fix running sk_skb program types with ktls 2020-06-22 09:31:12 +02:00
unix
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vmw_vsock vsock/virtio: annotate 'the_virtio_vsock' RCU pointer 2020-07-29 10:18:31 +02:00
wimax
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wireless nl80211: don't return err unconditionally in nl80211_start_ap() 2020-07-16 08:16:37 +02:00
x25 net/x25: Fix x25_neigh refcnt leak when receiving frame 2020-04-29 16:33:09 +02:00
xdp xdp: Fix xsk_generic_xmit errno 2020-06-24 17:50:44 +02:00
xfrm xfrm: Fix double ESP trailer insertion in IPsec crypto offload. 2020-06-30 15:36:53 -04:00
Kconfig
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Makefile
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compat.c
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socket.c
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sysctl_net.c
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