Kuniyuki Iwashima 54b92e8419 tcp: Migrate TCP_ESTABLISHED/TCP_SYN_RECV sockets in accept queues. ... When we call close() or shutdown() for listening sockets, each child socket in the accept queue are freed at inet_csk_listen_stop(). If we can get a new listener by reuseport_migrate_sock() and clone the request by inet_reqsk_clone(), we try to add it into the new listener's accept queue by inet_csk_reqsk_queue_add(). If it fails, we have to call __reqsk_free() to call sock_put() for its listener and free the cloned request. After putting the full socket into ehash, tcp_v[46]_syn_recv_sock() sets NULL to ireq_opt/pktopts in struct inet_request_sock, but ipv6_opt can be non-NULL. So, we have to set NULL to ipv6_opt of the old request to avoid double free. Note that we do not update req->rsk_listener and instead clone the req to migrate because another path may reference the original request. If we protected it by RCU, we would need to add rcu_read_lock() in many places. Suggested-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/netdev/20201209030903.hhow5r53l6fmozjn@kafai-mbp.dhcp.thefacebook.com/ Link: https://lore.kernel.org/bpf/20210612123224.12525-6-kuniyu@amazon.co.jp		2021-06-15 18:01:05 +02:00
..
6lowpan	6lowpan: Fix some typos in nhc_udp.c	2021-03-24 17:52:11 -07:00
9p	net: 9p: Correct function names in the kerneldoc comments	2021-03-28 17:56:56 -07:00
802
8021q	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-04-26 12:00:00 -07:00
appletalk	appletalk: Fix skb allocation size in loopback case	2021-02-12 16:40:28 -08:00
atm	net: atm: use DEVICE_ATTR_RO macro	2021-05-20 15:50:54 -07:00
ax25	net/ax25: Delete obsolete TODO file	2021-03-30 16:54:50 -07:00
batman-adv	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-04-09 20:48:35 -07:00
bluetooth	Networking changes for 5.13.	2021-04-29 11:57:23 -07:00
bpf	bpf: Prepare bpf syscall to be used from kernel and user space.	2021-05-19 00:33:40 +02:00
bpfilter	net: remove redundant 'depends on NET'	2021-01-27 17:04:12 -08:00
bridge	net: bridge: fix build when IPv6 is disabled	2021-05-14 10:38:59 -07:00
caif	net: caif: Drop unnecessary NULL check after container_of	2021-05-13 15:55:50 -07:00
can	can: proc: fix rcvlist_* header alignment on 64-bit system	2021-04-25 19:43:00 +02:00
ceph	Notable items here are a series to take advantage of David Howells'	2021-05-06 10:27:02 -07:00
core	tcp: Add reuseport_migrate_sock() to select a new listener.	2021-06-15 18:01:05 +02:00
dcb	net: dcb: Remove unnecessary INIT_LIST_HEAD()	2021-05-18 13:44:24 -07:00
dccp	net: Remove the member netns_ok	2021-05-17 15:29:35 -07:00
decnet	net/decnet: Delete obsolete TODO file	2021-03-30 16:54:50 -07:00
dns_resolver	net: remove redundant 'depends on NET'	2021-01-27 17:04:12 -08:00
dsa	net: selftest: fix build issue if INET is disabled	2021-04-28 14:06:45 -07:00
ethernet	of: net: pass the dst buffer to of_get_mac_address()	2021-04-13 14:35:02 -07:00
ethtool	ethtool: fix missing NLM_F_MULTI flag when dumping	2021-05-05 12:41:10 -07:00
hsr	net: hsr: check skb can contain struct hsr_ethhdr in fill_frame_info	2021-05-03 13:33:54 -07:00
ieee802154	net: remove the new_ifindex argument from dev_change_net_namespace	2021-04-07 14:43:28 -07:00
ife	net: remove redundant 'depends on NET'	2021-01-27 17:04:12 -08:00
ipv4	tcp: Migrate TCP_ESTABLISHED/TCP_SYN_RECV sockets in accept queues.	2021-06-15 18:01:05 +02:00
ipv6	net: Add notifications when multipath hash field change	2021-05-19 12:47:47 -07:00
iucv	iucv: af_iucv.c: Couple of typo fixes	2021-03-28 17:31:13 -07:00
kcm	kcm: kcmsock.c: Couple of typo fixes	2021-03-28 17:31:13 -07:00
key
l2tp	net: Remove the member netns_ok	2021-05-17 15:29:35 -07:00
l3mdev	l3mdev: Correct function names in the kerneldoc comments	2021-03-28 17:56:55 -07:00
lapb	net: lapb: Make "lapb_t1timer_running" able to detect an already running timer	2021-03-23 14:14:50 -07:00
llc	llc2: Remove redundant assignment to rc	2021-04-27 14:16:14 -07:00
mac80211	Networking changes for 5.13.	2021-04-29 11:57:23 -07:00
mac802154	net: mac802154: Fix general protection fault	2021-04-06 22:42:16 +02:00
mpls	mpls: Remove redundant assignment to err	2021-04-27 14:17:00 -07:00
mptcp	mptcp: fix splat when closing unaccepted socket	2021-05-07 15:53:40 -07:00
ncsi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-04-09 20:48:35 -07:00
netfilter	netfilter: nftables: avoid potential overflows on 32bit arches	2021-05-07 10:01:39 +02:00
netlabel	netlabel: remove unused parameter in netlbl_netlink_auditinfo()	2021-05-19 12:27:13 -07:00
netlink	netlink: don't call ->netlink_bind with table lock held	2021-04-16 17:01:04 -07:00
netrom	net: netrom: nr_in: Remove redundant assignment to ns	2021-04-28 13:59:08 -07:00
nfc	net/nfc: fix use-after-free llcp_sock_bind/connect	2021-05-04 11:59:48 -07:00
nsh
openvswitch	net: openvswitch: Remove unnecessary skb_nfct()	2021-05-10 14:18:19 -07:00
packet	net/packet: Remove redundant assignment to ret	2021-05-17 16:03:56 -07:00
phonet
psample	psample: Add additional metadata attributes	2021-03-14 15:00:43 -07:00
qrtr	net: qrtr: ns: Fix error return code in qrtr_ns_init()	2021-05-19 13:14:35 -07:00
rds	RDMA merge window pull request	2021-05-01 09:15:05 -07:00
rfkill	Another set of updates, all over the map:	2021-04-20 16:44:04 -07:00
rose	net: rose: Fix fall-through warnings for Clang	2021-03-10 12:45:15 -08:00
rxrpc	Networking changes for 5.13.	2021-04-29 11:57:23 -07:00
sched	net/sched: cls_api: increase max_reclassify_loop	2021-05-19 13:10:24 -07:00
sctp	net: Remove the member netns_ok	2021-05-17 15:29:35 -07:00
smc	smc: disallow TCP_ULP in smc_setsockopt()	2021-05-05 12:52:45 -07:00
strparser
sunrpc	NFS client updates for Linux 5.13	2021-05-07 11:23:41 -07:00
switchdev	net: bridge: propagate extack through switchdev_port_attr_set	2021-02-14 17:38:11 -08:00
tipc	Networking changes for 5.13.	2021-04-29 11:57:23 -07:00
tls	tls splice: remove inappropriate flags checking for MSG_PEEK	2021-05-12 14:31:30 -07:00
unix	af_unix: handle idmapped mounts	2021-01-24 14:27:18 +01:00
vmw_vsock	vsock/vmci: Remove redundant assignment to err	2021-04-30 15:00:59 -07:00
wireless	Networking changes for 5.13.	2021-04-29 11:57:23 -07:00
x25	af_x25.c: Fix a spello	2021-03-28 17:31:13 -07:00
xdp	xdp: Extend xdp_redirect_map with broadcast support	2021-05-26 09:46:16 +02:00
xfrm	xfrm: ipcomp: remove unnecessary get_cpu()	2021-04-19 12:49:29 +02:00
compat.c
devres.c
Kconfig	net: selftest: fix build issue if INET is disabled	2021-04-28 14:06:45 -07:00
Makefile	net: l3mdev: use obj-$(CONFIG_NET_L3_MASTER_DEV) form in net/Makefile	2021-01-27 17:03:52 -08:00
socket.c	net: Fix a misspell in socket.c	2021-03-25 16:56:27 -07:00
sysctl_net.c	net: Ensure net namespace isolation of sysctls	2021-04-12 13:27:11 -07:00