Kuniyuki Iwashima ef34ccdea4 udp: Copy has_conns in reuseport_grow(). ... [ Upstream commit f2b2c55e512879a05456eaf5de4d1ed2f7757509 ] If an unconnected socket in a UDP reuseport group connect()s, has_conns is set to 1. Then, when a packet is received, udp[46]_lib_lookup2() scans all sockets in udp_hslot looking for the connected socket with the highest score. However, when the number of sockets bound to the port exceeds max_socks, reuseport_grow() resets has_conns to 0. It can cause udp[46]_lib_lookup2() to return without scanning all sockets, resulting in that packets sent to connected sockets may be distributed to unconnected sockets. Therefore, reuseport_grow() should copy has_conns. Fixes: acdcecc61285 ("udp: correct reuseport selection with connected sockets") CC: Willem de Bruijn <willemb@google.com> Reviewed-by: Benjamin Herrenschmidt <benh@amazon.com> Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-03-16 16:32:43 +08:00
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Makefile	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
bpf_sk_storage.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
datagram.c	net: use indirect call wrappers for skb_copy_datagram_iter()	2021-03-16 16:27:16 +08:00
datagram.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dev.c	dev: Defer free of skbs in flush_backlog	2021-03-16 16:32:41 +08:00
dev_addr_lists.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dev_ioctl.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
devlink.c	devlink: fix return value after hitting end in region read	2021-03-16 16:27:32 +08:00
drop_monitor.c	drop_monitor: work around gcc-10 stringop-overflow warning	2021-03-16 16:27:46 +08:00
dst.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dst_cache.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
ethtool.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
failover.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
fib_notifier.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
fib_rules.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
filter.c	sched: consistently handle layer3 header accesses in the presence of VLANs	2021-03-16 16:31:44 +08:00
flow_dissector.c	flow_dissector: Drop BPF flow dissector prog ref on netns cleanup	2021-03-16 16:28:20 +08:00
flow_offload.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
gen_estimator.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
gen_stats.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
gro_cells.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
hwbm.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
link_watch.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
lwt_bpf.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
lwtunnel.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
neighbour.c	neigh: send protocol value in neighbor create notification	2021-03-16 16:27:33 +08:00
net-procfs.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
net-sysfs.c	net-sysfs: add a newline when printing 'tx_timeout' by sysfs	2021-03-16 16:32:41 +08:00
net-sysfs.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
net-traces.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
net_namespace.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
netclassid_cgroup.c	cgroup, netclassid: remove double cond_resched	2021-03-16 16:27:30 +08:00
netevent.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
netpoll.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
netprio_cgroup.c	netprio_cgroup: Fix unlimited memory leak of v2 cgroups	2021-03-16 16:27:49 +08:00
page_pool.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
pktgen.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
ptp_classifier.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
request_sock.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
rtnetlink.c	rtnetlink: Fix memory(net_device) leak when ->newlink fails	2021-03-16 16:32:42 +08:00
scm.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
secure_seq.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
skbuff.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
skmsg.c	bpf, sockmap: RCU dereferenced psock may be used outside RCU block	2021-03-16 16:31:30 +08:00
sock.c	cgroup: fix cgroup_sk_alloc() for sk_clone_lock()	2021-03-16 16:31:45 +08:00
sock_diag.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
sock_map.c	bpf: Fix memlock accounting for sock_hash	2021-03-16 16:30:35 +08:00
sock_reuseport.c	udp: Copy has_conns in reuseport_grow().	2021-03-16 16:32:43 +08:00
stream.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
sysctl_net_core.c	bpf: Check correct cred for CAP_SYSLOG in bpf_dump_raw_ok()	2021-03-16 16:31:38 +08:00
timestamping.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
tso.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
utils.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
xdp.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00