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Date: Tue, 14 Nov 2023 00:16:12 +0100
From: Matthieu Baerts <>
To:, Mat Martineau <>, 
 "David S. Miller" <>, Eric Dumazet <>, 
 Jakub Kicinski <>, Paolo Abeni <>, 
 Alexander Duyck <>, 
 Geliang Tang <>, 
 Poorva Sonparote <>, Shuah Khan <>
Cc:,,, Matthieu Baerts <>, 
 Christoph Paasch <>,,, 
 Xiumei Mu <>
Subject: [PATCH net 0/5] mptcp: misc. fixes for v6.7

Here are a few fixes related to MPTCP:

- Patch 1 limits GSO max size to ~64K when MPTCP is being used due to a
  spec limit. 'gso_max_size' can exceed the max value supported by MPTCP
  since v5.19.

- Patch 2 fixes a possible NULL pointer dereference on close that can
  happen since v6.7-rc1.

- Patch 3 avoids sending a RM_ADDR when the corresponding address is no
  longer tracked locally. A regression for a fix backported to v5.19.

- Patch 4 adds a missing lock when changing the IP TOS with setsockopt().
  A fix for v5.17.

- Patch 5 fixes an expectation when running MPTCP Join selftest with the
  checksum option (-C). An issue present since v6.1.

Signed-off-by: Matthieu Baerts <>
Geliang Tang (1):
      mptcp: add validity check for sending RM_ADDR

Paolo Abeni (4):
      mptcp: deal with large GSO size
      mptcp: fix possible NULL pointer dereference on close
      mptcp: fix setsockopt(IP_TOS) subflow locking
      selftests: mptcp: fix fastclose with csum failure

 net/mptcp/pm_netlink.c                          |  5 +++--
 net/mptcp/protocol.c                            | 11 ++++++++---
 net/mptcp/sockopt.c                             |  3 +++
 tools/testing/selftests/net/mptcp/ |  2 +-
 4 files changed, 15 insertions(+), 6 deletions(-)
base-commit: 2bd5b559a1f391f05927bbb0b31381fa71c61e26
change-id: 20231113-upstream-net-20231113-mptcp-misc-fixes-6-7-rc2-d15df60b0a3f

Best regards,
Matthieu Baerts <>

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