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Paolo Abeni b740d3c3cb mptcp: prevent excessive coalescing on receive 
commit 56b824eb49 upstream.

Currently the skb size after coalescing is only limited by the skb
layout (the skb must not carry frag_list). A single coalesced skb
covering several MSS can potentially fill completely the receive
buffer. In such a case, the snd win will zero until the receive buffer
will be empty again, affecting tput badly.

Fixes: 8268ed4c9d ("mptcp: introduce and use mptcp_try_coalesce()")
Cc: stable@vger.kernel.org # please delay 2 weeks after 6.13-final release
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241230-net-mptcp-rbuf-fixes-v1-3-8608af434ceb@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-02-21 13:49:54 +01:00
..
6lowpan net: 6lowpan: constify lowpan_nhc structures 2022-06-09 21:53:28 +02:00
9p 9p/xen: fix release of IRQ 2024-12-14 19:54:08 +01:00
802 net: 802: LLC+SNAP OID:PID lookup on start of skb data 2025-01-17 13:34:38 +01:00
8021q vlan: skip nested type that is not IFLA_VLAN_QOS_MAPPING 2024-01-31 16:17:04 -08:00
appletalk appletalk: Fix Use-After-Free in atalk_ioctl 2023-12-20 17:00:19 +01:00
atm atm: Fix Use-After-Free in do_vcc_ioctl 2023-12-20 17:00:17 +01:00
ax25 ax25: rcu protect dev->ax25_ptr 2025-02-21 13:49:02 +01:00
batman-adv batman-adv: Do not let TT changes list grows indefinitely 2024-12-19 18:08:52 +01:00
bluetooth Bluetooth: L2CAP: accept zero as a special value for MTU auto-selection 2025-02-21 13:49:40 +01:00
bpf bpf: Set run context for rawtp test_run callback 2024-06-21 14:35:33 +02:00
bpfilter uaccess: remove CONFIG_SET_FS 2022-02-25 09:36:06 +01:00
bridge netfilter: br_netfilter: fix panic with metadata_dst skb 2024-10-17 15:22:19 +02:00
caif net: caif: Fix use-after-free in cfusbl_device_notify() 2023-03-17 08:50:24 +01:00
can net: af_can: do not leave a dangling sk pointer in can_create() 2024-12-14 19:54:41 +01:00
ceph libceph: fix race between delayed_work() and ceph_monc_stop() 2024-07-18 13:18:41 +02:00
core bpf: tcp: Mark bpf_load_hdr_opt() arg2 as read-write 2025-02-21 13:49:09 +01:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-11 12:08:17 +02:00
dccp net: fix data-races around sk->sk_forward_alloc 2025-01-23 17:17:17 +01:00
devlink devlink: bump the instance index directly when iterating 2024-10-22 15:56:43 +02:00
dns_resolver keys, dns: Fix size check of V1 server-list header 2024-01-25 15:27:38 -08:00
dsa net: mscc: ocelot: use ocelot_xmit_get_vlan_info() also for FDMA and register injection 2024-08-29 17:30:43 +02:00
ethernet ethernet: Add helper for assigning packet type when dest address does not match device address 2024-05-02 16:29:29 +02:00
ethtool net: avoid race between device unregistration and ethnl ops 2025-02-21 13:49:06 +01:00
hsr net: hsr: fix fill_frame_info() regression vs VLAN packets 2025-02-21 13:49:23 +01:00
ieee802154 net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() 2024-12-14 19:54:41 +01:00
ife net: sched: ife: fix potential use-after-free 2024-01-01 12:38:56 +00:00
ipv4 udp: gso: do not drop small packets when PMTU reduces 2025-02-21 13:49:36 +01:00
ipv6 udp: gso: do not drop small packets when PMTU reduces 2025-02-21 13:49:36 +01:00
iucv s390/iucv: MSG_PEEK causes memory leak in iucv_sock_destruct() 2024-12-14 19:53:50 +01:00
kcm kcm: Serialise kcm_sendmsg() for the same socket. 2024-08-29 17:30:44 +02:00
key net: af_key: fix sadb_x_filter validation 2023-08-23 17:52:32 +02:00
l2tp genetlink: hold RCU in genlmsg_mcast() 2024-11-01 01:56:00 +01:00
l3mdev l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu 2022-04-15 14:27:24 -07:00
lapb net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c 2021-06-08 16:31:25 -07:00
llc net: llc: reset skb->transport_header 2025-01-09 13:30:01 +01:00
mac80211 wifi: mac80211: prohibit deactivating all links 2025-02-21 13:49:03 +01:00
mac802154 mac802154: check local interfaces before deleting sdata list 2025-01-23 17:17:11 +01:00
mctp net: mctp: handle skb cleanup on sock_queue failures 2025-01-09 13:29:57 +01:00
mpls net: mpls: error out if inner headers are not set 2024-04-13 13:05:27 +02:00
mptcp mptcp: prevent excessive coalescing on receive 2025-02-21 13:49:54 +01:00
ncsi net/ncsi: use dev_set_mac_address() for Get MC MAC Address handling 2025-02-21 13:49:54 +01:00
netfilter netfilter: nf_tables: reject mismatching sum of field_len with set key length 2025-02-21 13:49:25 +01:00
netlabel calipso: fix memory leak in netlbl_calipso_add_pass() 2024-01-25 15:27:20 -08:00
netlink sock_diag: add module pointer to "struct sock_diag_handler" 2024-12-14 19:53:32 +01:00
netrom netrom: check buffer length before accessing it 2025-01-09 13:30:01 +01:00
nfc NFC: nci: Add bounds checking in nci_hci_create_pipe() 2025-02-21 13:49:51 +01:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-05-17 11:55:59 +02:00
openvswitch openvswitch: fix lockup on tx to unregistering netdev with carrier 2025-01-23 17:17:09 +01:00
packet af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK 2025-01-09 13:30:02 +01:00
phonet phonet: fix rtm_phonet_notify() skb allocation 2024-05-17 11:56:12 +02:00
psample psample: Require 'CAP_NET_ADMIN' when joining "packets" group 2023-12-13 18:39:11 +01:00
qrtr net: qrtr: Update packets cloning when broadcasting 2024-10-17 15:21:13 +02:00
rds net:rds: Fix possible deadlock in rds_message_put 2024-08-29 17:30:20 +02:00
rfkill net: rfkill: gpio: Add check for clk_enable() 2024-12-14 19:53:33 +01:00
rose net: rose: lock the socket in rose_bind() 2025-02-21 13:49:37 +01:00
rxrpc rxrpc: Improve setsockopt() handling of malformed user input 2024-12-14 19:53:52 +01:00
sched netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() 2025-02-21 13:49:37 +01:00
sctp sctp: sysctl: plpmtud_probe_interval: avoid using current->nsproxy 2025-01-17 13:34:42 +01:00
smc net/smc: fix data error when recvmsg with MSG_PEEK flag 2025-02-21 13:49:03 +01:00
strparser strparser: pad sk_skb_cb to avoid straddling cachelines 2022-07-08 18:38:44 -07:00
sunrpc sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport 2024-12-14 19:54:09 +01:00
switchdev net: bridge: switchdev: Skip MDB replays of deferred events on offload 2024-03-01 13:26:35 +01:00
tipc tipc: re-order conditions in tipc_crypto_key_rcv() 2025-02-21 13:49:33 +01:00
tls tls: Fix tls_sw_sendmsg error handling 2025-01-17 13:34:39 +01:00
unix sock_diag: add module pointer to "struct sock_diag_handler" 2024-12-14 19:53:32 +01:00
vmw_vsock vsock: prevent null-ptr-deref in vsock_*[has_data|has_space] 2025-01-23 17:17:14 +01:00
wireless wifi: cfg80211: adjust allocation of colocated AP data 2025-02-21 13:49:05 +01:00
x25 net/x25: fix incorrect parameter validation in the x25_getsockopt() function 2024-03-26 18:20:42 -04:00
xdp xsk: fix OOB map writes when deleting elements 2024-12-14 19:54:36 +01:00
xfrm xfrm: replay: Fix the update of replay_esn->oseq_hi for GSO 2025-02-21 13:49:21 +01:00
compat.c use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
Kconfig Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile devlink: move code to a dedicated directory 2023-08-30 16:11:00 +02:00
socket.c net: explicitly clear the sk pointer, when pf->create fails 2024-10-17 15:22:27 +02:00
sysctl_net.c sysctl: treewide: drop unused argument ctl_table_root::set_ownership(table) 2024-08-11 12:35:51 +02:00