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Eric Dumazet 95c131b41f tcp: tcp_check_req() can be called from process context 
[ Upstream commit 580f98cc33a260bb8c6a39ae2921b29586b84fdf ]

This is a follow up of commit 0a375c8224 ("tcp: tcp_rtx_synack()
can be called from process context").

Frederick Lawler reported another "__this_cpu_add() in preemptible"
warning caused by the same reason.

In my former patch I took care of tcp_rtx_synack()
but forgot that tcp_check_req() also contained some SNMP updates.

Note that some parts of tcp_check_req() always run in BH context,
I added a comment to clarify this.

Fixes: 8336886f78 ("tcp: TCP Fast Open Server - support TFO listeners")
Link: https://lore.kernel.org/netdev/8cd33923-a21d-397c-e46b-2a068c287b03@cloudflare.com/T/
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Frederick Lawler <fred@cloudflare.com>
Tested-by: Frederick Lawler <fred@cloudflare.com>
Link: https://lore.kernel.org/r/20230227083336.4153089-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-11 13:55:29 +01:00
..
6lowpan
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9p
9p/rdma: unmap receive dma buffer in rdma_request()/post_recv()
2023-03-11 13:55:26 +01:00
802
mrp: introduce active flags to prevent UAF when applicant uninit
2022-12-31 13:33:02 +01:00
8021q
…
appletalk
…
atm
…
ax25
…
batman-adv
…
bluetooth
Bluetooth: L2CAP: Fix potential user-after-free
2023-03-10 09:33:01 +01:00
bpf
bpf: Move skb->len == 0 checks into __bpf_redirect
2022-12-31 13:32:14 +01:00
bpfilter
…
bridge
netfilter: ebtables: fix table blob use-after-free
2023-03-11 13:55:24 +01:00
caif
net: Remove WARN_ON_ONCE(sk->sk_forward_alloc) from sk_stream_kill_queues().
2023-03-03 11:52:23 +01:00
can
can: isotp: check CAN address family in isotp_bind()
2023-03-10 09:33:51 +01:00
ceph
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
core
net: fix __dev_kfree_skb_any() vs drop monitor
2023-03-11 13:55:26 +01:00
dcb
…
dccp
dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions.
2023-02-22 12:59:52 +01:00
dns_resolver
…
dsa
net: dsa: tag_8021q: avoid leaking ctx on dsa_tag_8021q_register() error path
2022-12-31 13:32:29 +01:00
ethernet
…
ethtool
net/ethtool/ioctl: return -EOPNOTSUPP if we have no phy stats
2023-01-24 07:24:31 +01:00
hsr
hsr: Synchronize sequence number updates.
2022-12-31 13:32:22 +01:00
ieee802154
…
ife
…
ipv4
tcp: tcp_check_req() can be called from process context
2023-03-11 13:55:29 +01:00
ipv6
ipv6: Add lwtunnel encap size of all siblings in nexthop calculation
2023-03-11 13:55:25 +01:00
iucv
…
kcm
…
key
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l2tp
l2tp: Avoid possible recursive deadlock in l2tp_tunnel_register()
2023-03-10 09:33:07 +01:00
l3mdev
…
lapb
…
llc
…
mac80211
wifi: mac80211: pass 'sta' to ieee80211_rx_data_set_sta()
2023-03-10 09:33:05 +01:00
mac802154
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mctp
net: mctp: purge receive queues on sk destruction
2023-02-06 08:06:34 +01:00
mpls
net: mpls: fix stale pointer if allocation fails during device rename
2023-02-22 12:59:53 +01:00
mptcp
mptcp: fix locking for in-kernel listener creation
2023-02-22 12:59:40 +01:00
ncsi
…
netfilter
netfilter: ctnetlink: make event listener tracking global
2023-03-11 13:55:24 +01:00
netlabel
…
netlink
netlink: annotate data races around sk_state
2023-02-01 08:34:45 +01:00
netrom
netrom: Fix use-after-free caused by accept on already connected socket
2023-02-09 11:28:06 +01:00
nfc
nfc: fix memory leak of se_io context in nfc_genl_se_io
2023-03-11 13:55:27 +01:00
nsh
…
openvswitch
net: openvswitch: fix possible memory leak in ovs_meter_cmd_set()
2023-02-22 12:59:52 +01:00
packet
…
phonet
…
psample
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qrtr
net: qrtr: free memory on error path in radix_tree_insert()
2023-02-09 11:28:15 +01:00
rds
rds: rds_rm_zerocopy_callback() correct order for list_add_tail()
2023-03-10 09:33:02 +01:00
rfkill
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rose
net/rose: Fix to not accept on connected socket
2023-02-22 12:59:42 +01:00
rxrpc
rxrpc: Fix missing unlock in rxrpc_do_sendmsg()
2022-12-31 13:32:55 +01:00
sched
net/sched: act_sample: fix action bind logic
2023-03-11 13:55:28 +01:00
sctp
sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop
2023-03-11 13:55:26 +01:00
smc
net/smc: fix application data exception
2023-03-10 09:33:07 +01:00
strparser
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sunrpc
NFS: fix disabling of swap
2023-03-10 09:33:22 +01:00
switchdev
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tipc
tipc: fix kernel warning when sending SYN message
2023-02-22 12:59:53 +01:00
tls
net/tls: tls_is_tx_ready() checked list_entry
2023-02-09 11:28:08 +01:00
unix
unix: Fix race in SOCK_SEQPACKET's unix_dgram_sendmsg()
2022-12-31 13:32:54 +01:00
vmw_vsock
net: vmw_vsock: vmci: Check memcpy_from_msg()
2022-12-31 13:32:26 +01:00
wireless
wifi: cfg80211: Set SSID if it is not already set
2023-03-10 09:34:22 +01:00
x25
net/x25: Fix to not accept on connected socket
2023-02-09 11:28:13 +01:00
xdp
xsk: check IFF_UP earlier in Tx path
2023-03-10 09:33:06 +01:00
xfrm
Fix XFRM-I support for nested ESP tunnels
2023-03-03 11:52:20 +01:00
compat.c
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
devres.c
…
Kconfig
…
Kconfig.debug
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Makefile
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socket.c
net: avoid double iput when sock_alloc_file fails
2023-03-10 09:34:34 +01:00
sysctl_net.c
…