]> git.ipfire.org Git - thirdparty/kernel/stable-queue.git/commitdiff
6.1-stable patches
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 4 Sep 2024 14:32:50 +0000 (16:32 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 4 Sep 2024 14:32:50 +0000 (16:32 +0200)
added patches:
mptcp-pm-avoid-possible-uaf-when-selecting-endp.patch
mptcp-pm-fix-id-0-endp-usage-after-multiple-re-creations.patch
mptcp-pm-fullmesh-select-the-right-id-later.patch
mptcp-pm-reuse-id-0-after-delete-and-re-add.patch
mptcp-pr_debug-add-missing-n-at-the-end.patch
selftests-mptcp-add-explicit-test-case-for-remove-readd.patch
selftests-mptcp-join-check-re-adding-init-endp-with-id.patch
selftests-mptcp-join-check-re-using-id-of-closed-subflow.patch
selftests-mptcp-join-check-re-using-id-of-unused-add_addr.patch
selftests-mptcp-join-test-for-flush-re-add-endpoints.patch
selftests-mptcp-join-validate-fullmesh-endp-on-1st-sf.patch

12 files changed:
queue-6.1/mptcp-pm-avoid-possible-uaf-when-selecting-endp.patch [new file with mode: 0644]
queue-6.1/mptcp-pm-fix-id-0-endp-usage-after-multiple-re-creations.patch [new file with mode: 0644]
queue-6.1/mptcp-pm-fullmesh-select-the-right-id-later.patch [new file with mode: 0644]
queue-6.1/mptcp-pm-reuse-id-0-after-delete-and-re-add.patch [new file with mode: 0644]
queue-6.1/mptcp-pr_debug-add-missing-n-at-the-end.patch [new file with mode: 0644]
queue-6.1/selftests-mptcp-add-explicit-test-case-for-remove-readd.patch [new file with mode: 0644]
queue-6.1/selftests-mptcp-join-check-re-adding-init-endp-with-id.patch [new file with mode: 0644]
queue-6.1/selftests-mptcp-join-check-re-using-id-of-closed-subflow.patch [new file with mode: 0644]
queue-6.1/selftests-mptcp-join-check-re-using-id-of-unused-add_addr.patch [new file with mode: 0644]
queue-6.1/selftests-mptcp-join-test-for-flush-re-add-endpoints.patch [new file with mode: 0644]
queue-6.1/selftests-mptcp-join-validate-fullmesh-endp-on-1st-sf.patch [new file with mode: 0644]
queue-6.1/series

diff --git a/queue-6.1/mptcp-pm-avoid-possible-uaf-when-selecting-endp.patch b/queue-6.1/mptcp-pm-avoid-possible-uaf-when-selecting-endp.patch
new file mode 100644 (file)
index 0000000..01ce42c
--- /dev/null
@@ -0,0 +1,183 @@
+From stable+bounces-73002-greg=kroah.com@vger.kernel.org Wed Sep  4 12:58:37 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 12:57:22 +0200
+Subject: mptcp: pm: avoid possible UaF when selecting endp
+To: stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: MPTCP Upstream <mptcp@lists.linux.dev>, "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, Paolo Abeni <pabeni@redhat.com>, Mat Martineau <martineau@kernel.org>, Jakub Kicinski <kuba@kernel.org>
+Message-ID: <20240904105721.4075460-2-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit 48e50dcbcbaaf713d82bf2da5c16aeced94ad07d upstream.
+
+select_local_address() and select_signal_address() both select an
+endpoint entry from the list inside an RCU protected section, but return
+a reference to it, to be read later on. If the entry is dereferenced
+after the RCU unlock, reading info could cause a Use-after-Free.
+
+A simple solution is to copy the required info while inside the RCU
+protected section to avoid any risk of UaF later. The address ID might
+need to be modified later to handle the ID0 case later, so a copy seems
+OK to deal with.
+
+Reported-by: Paolo Abeni <pabeni@redhat.com>
+Closes: https://lore.kernel.org/45cd30d3-7710-491c-ae4d-a1368c00beb1@redhat.com
+Fixes: 01cacb00b35c ("mptcp: add netlink-based PM")
+Cc: stable@vger.kernel.org
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20240819-net-mptcp-pm-reusing-id-v1-14-38035d40de5b@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+[ Conflicts in pm_netlink.c, because the context has been modified in
+  commit b9d69db87fb7 ("mptcp: let the in-kernel PM use mixed IPv4 and
+  IPv6 addresses"), which is not a candidate for the backports. The same
+  modifications have been applied in this version. The conflict in
+  mptcp_pm_create_subflow_or_signal_addr() has been resolved by taking
+  the newer version, which skip a lock if it is not needed. ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/mptcp/pm_netlink.c |   68 ++++++++++++++++++++++++++-----------------------
+ 1 file changed, 37 insertions(+), 31 deletions(-)
+
+--- a/net/mptcp/pm_netlink.c
++++ b/net/mptcp/pm_netlink.c
+@@ -150,12 +150,14 @@ static bool lookup_subflow_by_daddr(cons
+       return false;
+ }
+-static struct mptcp_pm_addr_entry *
++static bool
+ select_local_address(const struct pm_nl_pernet *pernet,
+-                   const struct mptcp_sock *msk)
++                   const struct mptcp_sock *msk,
++                   struct mptcp_pm_addr_entry *new_entry)
+ {
+       const struct sock *sk = (const struct sock *)msk;
+-      struct mptcp_pm_addr_entry *entry, *ret = NULL;
++      struct mptcp_pm_addr_entry *entry;
++      bool found = false;
+       msk_owned_by_me(msk);
+@@ -177,17 +179,21 @@ select_local_address(const struct pm_nl_
+                               continue;
+               }
+-              ret = entry;
++              *new_entry = *entry;
++              found = true;
+               break;
+       }
+       rcu_read_unlock();
+-      return ret;
++
++      return found;
+ }
+-static struct mptcp_pm_addr_entry *
+-select_signal_address(struct pm_nl_pernet *pernet, const struct mptcp_sock *msk)
++static bool
++select_signal_address(struct pm_nl_pernet *pernet, const struct mptcp_sock *msk,
++                    struct mptcp_pm_addr_entry *new_entry)
+ {
+-      struct mptcp_pm_addr_entry *entry, *ret = NULL;
++      struct mptcp_pm_addr_entry *entry;
++      bool found = false;
+       rcu_read_lock();
+       /* do not keep any additional per socket state, just signal
+@@ -202,11 +208,13 @@ select_signal_address(struct pm_nl_perne
+               if (!(entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL))
+                       continue;
+-              ret = entry;
++              *new_entry = *entry;
++              found = true;
+               break;
+       }
+       rcu_read_unlock();
+-      return ret;
++
++      return found;
+ }
+ unsigned int mptcp_pm_get_add_addr_signal_max(const struct mptcp_sock *msk)
+@@ -527,9 +535,10 @@ __lookup_addr(struct pm_nl_pernet *perne
+ static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk)
+ {
+-      struct mptcp_pm_addr_entry *local, *signal_and_subflow = NULL;
+       struct sock *sk = (struct sock *)msk;
++      struct mptcp_pm_addr_entry local;
+       unsigned int add_addr_signal_max;
++      bool signal_and_subflow = false;
+       unsigned int local_addr_max;
+       struct pm_nl_pernet *pernet;
+       unsigned int subflows_max;
+@@ -580,23 +589,22 @@ static void mptcp_pm_create_subflow_or_s
+               if (msk->pm.addr_signal & BIT(MPTCP_ADD_ADDR_SIGNAL))
+                       return;
+-              local = select_signal_address(pernet, msk);
+-              if (!local)
++              if (!select_signal_address(pernet, msk, &local))
+                       goto subflow;
+               /* If the alloc fails, we are on memory pressure, not worth
+                * continuing, and trying to create subflows.
+                */
+-              if (!mptcp_pm_alloc_anno_list(msk, &local->addr))
++              if (!mptcp_pm_alloc_anno_list(msk, &local.addr))
+                       return;
+-              __clear_bit(local->addr.id, msk->pm.id_avail_bitmap);
++              __clear_bit(local.addr.id, msk->pm.id_avail_bitmap);
+               msk->pm.add_addr_signaled++;
+-              mptcp_pm_announce_addr(msk, &local->addr, false);
++              mptcp_pm_announce_addr(msk, &local.addr, false);
+               mptcp_pm_nl_addr_send_ack(msk);
+-              if (local->flags & MPTCP_PM_ADDR_FLAG_SUBFLOW)
+-                      signal_and_subflow = local;
++              if (local.flags & MPTCP_PM_ADDR_FLAG_SUBFLOW)
++                      signal_and_subflow = true;
+       }
+ subflow:
+@@ -607,24 +615,22 @@ subflow:
+               bool fullmesh;
+               int i, nr;
+-              if (signal_and_subflow) {
+-                      local = signal_and_subflow;
+-                      signal_and_subflow = NULL;
+-              } else {
+-                      local = select_local_address(pernet, msk);
+-                      if (!local)
+-                              break;
+-              }
++              if (signal_and_subflow)
++                      signal_and_subflow = false;
++              else if (!select_local_address(pernet, msk, &local))
++                      break;
+-              fullmesh = !!(local->flags & MPTCP_PM_ADDR_FLAG_FULLMESH);
++              fullmesh = !!(local.flags & MPTCP_PM_ADDR_FLAG_FULLMESH);
+               msk->pm.local_addr_used++;
+-              nr = fill_remote_addresses_vec(msk, &local->addr, fullmesh, addrs);
+-              if (nr)
+-                      __clear_bit(local->addr.id, msk->pm.id_avail_bitmap);
++              __clear_bit(local.addr.id, msk->pm.id_avail_bitmap);
++              nr = fill_remote_addresses_vec(msk, &local.addr, fullmesh, addrs);
++              if (nr == 0)
++                      continue;
++
+               spin_unlock_bh(&msk->pm.lock);
+               for (i = 0; i < nr; i++)
+-                      __mptcp_subflow_connect(sk, &local->addr, &addrs[i]);
++                      __mptcp_subflow_connect(sk, &local.addr, &addrs[i]);
+               spin_lock_bh(&msk->pm.lock);
+       }
+       mptcp_pm_nl_check_work_pending(msk);
diff --git a/queue-6.1/mptcp-pm-fix-id-0-endp-usage-after-multiple-re-creations.patch b/queue-6.1/mptcp-pm-fix-id-0-endp-usage-after-multiple-re-creations.patch
new file mode 100644 (file)
index 0000000..83aa9b3
--- /dev/null
@@ -0,0 +1,67 @@
+From stable+bounces-73006-greg=kroah.com@vger.kernel.org Wed Sep  4 13:04:07 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 13:03:09 +0200
+Subject: mptcp: pm: fix ID 0 endp usage after multiple re-creations
+To: mptcp@lists.linux.dev, stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, "Arınç ÜNAL" <arinc.unal@arinc9.com>, syzbot+455d38ecd5f655fc45cf@syzkaller.appspotmail.com, "Mat Martineau" <martineau@kernel.org>, "Paolo Abeni" <pabeni@redhat.com>
+Message-ID: <20240904110306.4082410-6-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit 9366922adc6a71378ca01f898c41be295309f044 upstream.
+
+'local_addr_used' and 'add_addr_accepted' are decremented for addresses
+not related to the initial subflow (ID0), because the source and
+destination addresses of the initial subflows are known from the
+beginning: they don't count as "additional local address being used" or
+"ADD_ADDR being accepted".
+
+It is then required not to increment them when the entrypoint used by
+the initial subflow is removed and re-added during a connection. Without
+this modification, this entrypoint cannot be removed and re-added more
+than once.
+
+Reported-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/512
+Fixes: 3ad14f54bd74 ("mptcp: more accurate MPC endpoint tracking")
+Reported-by: syzbot+455d38ecd5f655fc45cf@syzkaller.appspotmail.com
+Closes: https://lore.kernel.org/00000000000049861306209237f4@google.com
+Cc: stable@vger.kernel.org
+Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/mptcp/pm_netlink.c |    7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+--- a/net/mptcp/pm_netlink.c
++++ b/net/mptcp/pm_netlink.c
+@@ -627,12 +627,13 @@ subflow:
+               fullmesh = !!(local.flags & MPTCP_PM_ADDR_FLAG_FULLMESH);
+-              msk->pm.local_addr_used++;
+               __clear_bit(local.addr.id, msk->pm.id_avail_bitmap);
+               /* Special case for ID0: set the correct ID */
+               if (local.addr.id == msk->mpc_endpoint_id)
+                       local.addr.id = 0;
++              else /* local_addr_used is not decr for ID 0 */
++                      msk->pm.local_addr_used++;
+               nr = fill_remote_addresses_vec(msk, &local.addr, fullmesh, addrs);
+               if (nr == 0)
+@@ -758,7 +759,9 @@ static void mptcp_pm_nl_add_addr_receive
+       spin_lock_bh(&msk->pm.lock);
+       if (sf_created) {
+-              msk->pm.add_addr_accepted++;
++              /* add_addr_accepted is not decr for ID 0 */
++              if (remote.id)
++                      msk->pm.add_addr_accepted++;
+               if (msk->pm.add_addr_accepted >= add_addr_accept_max ||
+                   msk->pm.subflows >= subflows_max)
+                       WRITE_ONCE(msk->pm.accept_addr, false);
diff --git a/queue-6.1/mptcp-pm-fullmesh-select-the-right-id-later.patch b/queue-6.1/mptcp-pm-fullmesh-select-the-right-id-later.patch
new file mode 100644 (file)
index 0000000..f11b4c7
--- /dev/null
@@ -0,0 +1,84 @@
+From stable+bounces-73001-greg=kroah.com@vger.kernel.org Wed Sep  4 12:58:26 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 12:56:28 +0200
+Subject: mptcp: pm: fullmesh: select the right ID later
+To: stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: MPTCP Upstream <mptcp@lists.linux.dev>, "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, Mat Martineau <martineau@kernel.org>, Jakub Kicinski <kuba@kernel.org>
+Message-ID: <20240904105627.4074381-2-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit 09355f7abb9fbfc1a240be029837921ea417bf4f upstream.
+
+When reacting upon the reception of an ADD_ADDR, the in-kernel PM first
+looks for fullmesh endpoints. If there are some, it will pick them,
+using their entry ID.
+
+It should set the ID 0 when using the endpoint corresponding to the
+initial subflow, it is a special case imposed by the MPTCP specs.
+
+Note that msk->mpc_endpoint_id might not be set when receiving the first
+ADD_ADDR from the server. So better to compare the addresses.
+
+Fixes: 1a0d6136c5f0 ("mptcp: local addresses fullmesh")
+Cc: stable@vger.kernel.org
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20240819-net-mptcp-pm-reusing-id-v1-12-38035d40de5b@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+[ Conflicts in pm_netlink.c, because the new 'mpc_addr' variable is
+  added where the 'local' one was, before commit b9d69db87fb7 ("mptcp:
+  let the in-kernel PM use mixed IPv4 and IPv6 addresses"), that is not
+  a candidate for the backports. This 'local' variable has been moved to
+  the new place to reduce the scope, and help with possible future
+  backports. ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/mptcp/pm_netlink.c |   14 ++++++++++++--
+ 1 file changed, 12 insertions(+), 2 deletions(-)
+
+--- a/net/mptcp/pm_netlink.c
++++ b/net/mptcp/pm_netlink.c
+@@ -648,7 +648,7 @@ static unsigned int fill_local_addresses
+ {
+       struct sock *sk = (struct sock *)msk;
+       struct mptcp_pm_addr_entry *entry;
+-      struct mptcp_addr_info local;
++      struct mptcp_addr_info mpc_addr;
+       struct pm_nl_pernet *pernet;
+       unsigned int subflows_max;
+       int i = 0;
+@@ -656,6 +656,8 @@ static unsigned int fill_local_addresses
+       pernet = pm_nl_get_pernet_from_msk(msk);
+       subflows_max = mptcp_pm_get_subflows_max(msk);
++      mptcp_local_address((struct sock_common *)msk, &mpc_addr);
++
+       rcu_read_lock();
+       list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {
+               if (!(entry->flags & MPTCP_PM_ADDR_FLAG_FULLMESH))
+@@ -673,7 +675,13 @@ static unsigned int fill_local_addresses
+               if (msk->pm.subflows < subflows_max) {
+                       msk->pm.subflows++;
+-                      addrs[i++] = entry->addr;
++                      addrs[i] = entry->addr;
++
++                      /* Special case for ID0: set the correct ID */
++                      if (mptcp_addresses_equal(&entry->addr, &mpc_addr, entry->addr.port))
++                              addrs[i].id = 0;
++
++                      i++;
+               }
+       }
+       rcu_read_unlock();
+@@ -682,6 +690,8 @@ static unsigned int fill_local_addresses
+        * 'IPADDRANY' local address
+        */
+       if (!i) {
++              struct mptcp_addr_info local;
++
+               memset(&local, 0, sizeof(local));
+               local.family = msk->pm.remote.family;
diff --git a/queue-6.1/mptcp-pm-reuse-id-0-after-delete-and-re-add.patch b/queue-6.1/mptcp-pm-reuse-id-0-after-delete-and-re-add.patch
new file mode 100644 (file)
index 0000000..bf49a90
--- /dev/null
@@ -0,0 +1,56 @@
+From stable+bounces-73005-greg=kroah.com@vger.kernel.org Wed Sep  4 13:04:05 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 13:03:08 +0200
+Subject: mptcp: pm: reuse ID 0 after delete and re-add
+To: mptcp@lists.linux.dev, stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, Mat Martineau <martineau@kernel.org>, Paolo Abeni <pabeni@redhat.com>
+Message-ID: <20240904110306.4082410-5-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit 8b8ed1b429f8fa7ebd5632555e7b047bc0620075 upstream.
+
+When the endpoint used by the initial subflow is removed and re-added
+later, the PM has to force the ID 0, it is a special case imposed by the
+MPTCP specs.
+
+Note that the endpoint should then need to be re-added reusing the same
+ID.
+
+Fixes: 3ad14f54bd74 ("mptcp: more accurate MPC endpoint tracking")
+Cc: stable@vger.kernel.org
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/mptcp/pm_netlink.c |   10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/net/mptcp/pm_netlink.c
++++ b/net/mptcp/pm_netlink.c
+@@ -600,6 +600,11 @@ static void mptcp_pm_create_subflow_or_s
+               __clear_bit(local.addr.id, msk->pm.id_avail_bitmap);
+               msk->pm.add_addr_signaled++;
++
++              /* Special case for ID0: set the correct ID */
++              if (local.addr.id == msk->mpc_endpoint_id)
++                      local.addr.id = 0;
++
+               mptcp_pm_announce_addr(msk, &local.addr, false);
+               mptcp_pm_nl_addr_send_ack(msk);
+@@ -624,6 +629,11 @@ subflow:
+               msk->pm.local_addr_used++;
+               __clear_bit(local.addr.id, msk->pm.id_avail_bitmap);
++
++              /* Special case for ID0: set the correct ID */
++              if (local.addr.id == msk->mpc_endpoint_id)
++                      local.addr.id = 0;
++
+               nr = fill_remote_addresses_vec(msk, &local.addr, fullmesh, addrs);
+               if (nr == 0)
+                       continue;
diff --git a/queue-6.1/mptcp-pr_debug-add-missing-n-at-the-end.patch b/queue-6.1/mptcp-pr_debug-add-missing-n-at-the-end.patch
new file mode 100644 (file)
index 0000000..b58c3d2
--- /dev/null
@@ -0,0 +1,1012 @@
+From stable+bounces-73013-greg=kroah.com@vger.kernel.org Wed Sep  4 13:09:42 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 13:09:27 +0200
+Subject: mptcp: pr_debug: add missing \n at the end
+To: stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: MPTCP Upstream <mptcp@lists.linux.dev>, "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, Geliang Tang <geliang@kernel.org>, Jakub Kicinski <kuba@kernel.org>
+Message-ID: <20240904110926.4090424-2-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit cb41b195e634d3f1ecfcd845314e64fd4bb3c7aa upstream.
+
+pr_debug() have been added in various places in MPTCP code to help
+developers to debug some situations. With the dynamic debug feature, it
+is easy to enable all or some of them, and asks users to reproduce
+issues with extra debug.
+
+Many of these pr_debug() don't end with a new line, while no 'pr_cont()'
+are used in MPTCP code. So the goal was not to display multiple debug
+messages on one line: they were then not missing the '\n' on purpose.
+Not having the new line at the end causes these messages to be printed
+with a delay, when something else needs to be printed. This issue is not
+visible when many messages need to be printed, but it is annoying and
+confusing when only specific messages are expected, e.g.
+
+  # echo "func mptcp_pm_add_addr_echoed +fmp" \
+        > /sys/kernel/debug/dynamic_debug/control
+  # ./mptcp_join.sh "signal address"; \
+        echo "$(awk '{print $1}' /proc/uptime) - end"; \
+        sleep 5s; \
+        echo "$(awk '{print $1}' /proc/uptime) - restart"; \
+        ./mptcp_join.sh "signal address"
+  013 signal address
+      (...)
+  10.75 - end
+  15.76 - restart
+  013 signal address
+  [  10.367935] mptcp:mptcp_pm_add_addr_echoed: MPTCP: msk=(...)
+      (...)
+
+  => a delay of 5 seconds: printed with a 10.36 ts, but after 'restart'
+     which was printed at the 15.76 ts.
+
+The 'Fixes' tag here below points to the first pr_debug() used without
+'\n' in net/mptcp. This patch could be split in many small ones, with
+different Fixes tag, but it doesn't seem worth it, because it is easy to
+re-generate this patch with this simple 'sed' command:
+
+  git grep -l pr_debug -- net/mptcp |
+    xargs sed -i "s/\(pr_debug(\".*[^n]\)\(\"[,)]\)/\1\\\n\2/g"
+
+So in case of conflicts, simply drop the modifications, and launch this
+command.
+
+Fixes: f870fa0b5768 ("mptcp: Add MPTCP socket stubs")
+Cc: stable@vger.kernel.org
+Reviewed-by: Geliang Tang <geliang@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20240826-net-mptcp-close-extra-sf-fin-v1-4-905199fe1172@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+[ As mentioned above, conflicts were expected, and resolved by using the
+  'sed' command which is visible above. ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/mptcp/options.c    |   50 +++++++++++++++++++++++------------------------
+ net/mptcp/pm.c         |   28 +++++++++++++-------------
+ net/mptcp/pm_netlink.c |   20 +++++++++---------
+ net/mptcp/protocol.c   |   52 ++++++++++++++++++++++++-------------------------
+ net/mptcp/protocol.h   |    4 +--
+ net/mptcp/sockopt.c    |    4 +--
+ net/mptcp/subflow.c    |   50 +++++++++++++++++++++++------------------------
+ 7 files changed, 104 insertions(+), 104 deletions(-)
+
+--- a/net/mptcp/options.c
++++ b/net/mptcp/options.c
+@@ -112,7 +112,7 @@ static void mptcp_parse_option(const str
+                       mp_opt->suboptions |= OPTION_MPTCP_CSUMREQD;
+                       ptr += 2;
+               }
+-              pr_debug("MP_CAPABLE version=%x, flags=%x, optlen=%d sndr=%llu, rcvr=%llu len=%d csum=%u",
++              pr_debug("MP_CAPABLE version=%x, flags=%x, optlen=%d sndr=%llu, rcvr=%llu len=%d csum=%u\n",
+                        version, flags, opsize, mp_opt->sndr_key,
+                        mp_opt->rcvr_key, mp_opt->data_len, mp_opt->csum);
+               break;
+@@ -126,7 +126,7 @@ static void mptcp_parse_option(const str
+                       ptr += 4;
+                       mp_opt->nonce = get_unaligned_be32(ptr);
+                       ptr += 4;
+-                      pr_debug("MP_JOIN bkup=%u, id=%u, token=%u, nonce=%u",
++                      pr_debug("MP_JOIN bkup=%u, id=%u, token=%u, nonce=%u\n",
+                                mp_opt->backup, mp_opt->join_id,
+                                mp_opt->token, mp_opt->nonce);
+               } else if (opsize == TCPOLEN_MPTCP_MPJ_SYNACK) {
+@@ -137,19 +137,19 @@ static void mptcp_parse_option(const str
+                       ptr += 8;
+                       mp_opt->nonce = get_unaligned_be32(ptr);
+                       ptr += 4;
+-                      pr_debug("MP_JOIN bkup=%u, id=%u, thmac=%llu, nonce=%u",
++                      pr_debug("MP_JOIN bkup=%u, id=%u, thmac=%llu, nonce=%u\n",
+                                mp_opt->backup, mp_opt->join_id,
+                                mp_opt->thmac, mp_opt->nonce);
+               } else if (opsize == TCPOLEN_MPTCP_MPJ_ACK) {
+                       mp_opt->suboptions |= OPTION_MPTCP_MPJ_ACK;
+                       ptr += 2;
+                       memcpy(mp_opt->hmac, ptr, MPTCPOPT_HMAC_LEN);
+-                      pr_debug("MP_JOIN hmac");
++                      pr_debug("MP_JOIN hmac\n");
+               }
+               break;
+       case MPTCPOPT_DSS:
+-              pr_debug("DSS");
++              pr_debug("DSS\n");
+               ptr++;
+               /* we must clear 'mpc_map' be able to detect MP_CAPABLE
+@@ -164,7 +164,7 @@ static void mptcp_parse_option(const str
+               mp_opt->ack64 = (flags & MPTCP_DSS_ACK64) != 0;
+               mp_opt->use_ack = (flags & MPTCP_DSS_HAS_ACK);
+-              pr_debug("data_fin=%d dsn64=%d use_map=%d ack64=%d use_ack=%d",
++              pr_debug("data_fin=%d dsn64=%d use_map=%d ack64=%d use_ack=%d\n",
+                        mp_opt->data_fin, mp_opt->dsn64,
+                        mp_opt->use_map, mp_opt->ack64,
+                        mp_opt->use_ack);
+@@ -202,7 +202,7 @@ static void mptcp_parse_option(const str
+                               ptr += 4;
+                       }
+-                      pr_debug("data_ack=%llu", mp_opt->data_ack);
++                      pr_debug("data_ack=%llu\n", mp_opt->data_ack);
+               }
+               if (mp_opt->use_map) {
+@@ -226,7 +226,7 @@ static void mptcp_parse_option(const str
+                               ptr += 2;
+                       }
+-                      pr_debug("data_seq=%llu subflow_seq=%u data_len=%u csum=%d:%u",
++                      pr_debug("data_seq=%llu subflow_seq=%u data_len=%u csum=%d:%u\n",
+                                mp_opt->data_seq, mp_opt->subflow_seq,
+                                mp_opt->data_len, !!(mp_opt->suboptions & OPTION_MPTCP_CSUMREQD),
+                                mp_opt->csum);
+@@ -288,7 +288,7 @@ static void mptcp_parse_option(const str
+                       mp_opt->ahmac = get_unaligned_be64(ptr);
+                       ptr += 8;
+               }
+-              pr_debug("ADD_ADDR%s: id=%d, ahmac=%llu, echo=%d, port=%d",
++              pr_debug("ADD_ADDR%s: id=%d, ahmac=%llu, echo=%d, port=%d\n",
+                        (mp_opt->addr.family == AF_INET6) ? "6" : "",
+                        mp_opt->addr.id, mp_opt->ahmac, mp_opt->echo, ntohs(mp_opt->addr.port));
+               break;
+@@ -304,7 +304,7 @@ static void mptcp_parse_option(const str
+               mp_opt->rm_list.nr = opsize - TCPOLEN_MPTCP_RM_ADDR_BASE;
+               for (i = 0; i < mp_opt->rm_list.nr; i++)
+                       mp_opt->rm_list.ids[i] = *ptr++;
+-              pr_debug("RM_ADDR: rm_list_nr=%d", mp_opt->rm_list.nr);
++              pr_debug("RM_ADDR: rm_list_nr=%d\n", mp_opt->rm_list.nr);
+               break;
+       case MPTCPOPT_MP_PRIO:
+@@ -313,7 +313,7 @@ static void mptcp_parse_option(const str
+               mp_opt->suboptions |= OPTION_MPTCP_PRIO;
+               mp_opt->backup = *ptr++ & MPTCP_PRIO_BKUP;
+-              pr_debug("MP_PRIO: prio=%d", mp_opt->backup);
++              pr_debug("MP_PRIO: prio=%d\n", mp_opt->backup);
+               break;
+       case MPTCPOPT_MP_FASTCLOSE:
+@@ -324,7 +324,7 @@ static void mptcp_parse_option(const str
+               mp_opt->rcvr_key = get_unaligned_be64(ptr);
+               ptr += 8;
+               mp_opt->suboptions |= OPTION_MPTCP_FASTCLOSE;
+-              pr_debug("MP_FASTCLOSE: recv_key=%llu", mp_opt->rcvr_key);
++              pr_debug("MP_FASTCLOSE: recv_key=%llu\n", mp_opt->rcvr_key);
+               break;
+       case MPTCPOPT_RST:
+@@ -338,7 +338,7 @@ static void mptcp_parse_option(const str
+               flags = *ptr++;
+               mp_opt->reset_transient = flags & MPTCP_RST_TRANSIENT;
+               mp_opt->reset_reason = *ptr;
+-              pr_debug("MP_RST: transient=%u reason=%u",
++              pr_debug("MP_RST: transient=%u reason=%u\n",
+                        mp_opt->reset_transient, mp_opt->reset_reason);
+               break;
+@@ -349,7 +349,7 @@ static void mptcp_parse_option(const str
+               ptr += 2;
+               mp_opt->suboptions |= OPTION_MPTCP_FAIL;
+               mp_opt->fail_seq = get_unaligned_be64(ptr);
+-              pr_debug("MP_FAIL: data_seq=%llu", mp_opt->fail_seq);
++              pr_debug("MP_FAIL: data_seq=%llu\n", mp_opt->fail_seq);
+               break;
+       default:
+@@ -412,7 +412,7 @@ bool mptcp_syn_options(struct sock *sk,
+               *size = TCPOLEN_MPTCP_MPC_SYN;
+               return true;
+       } else if (subflow->request_join) {
+-              pr_debug("remote_token=%u, nonce=%u", subflow->remote_token,
++              pr_debug("remote_token=%u, nonce=%u\n", subflow->remote_token,
+                        subflow->local_nonce);
+               opts->suboptions = OPTION_MPTCP_MPJ_SYN;
+               opts->join_id = subflow->local_id;
+@@ -496,7 +496,7 @@ static bool mptcp_established_options_mp
+                       *size = TCPOLEN_MPTCP_MPC_ACK;
+               }
+-              pr_debug("subflow=%p, local_key=%llu, remote_key=%llu map_len=%d",
++              pr_debug("subflow=%p, local_key=%llu, remote_key=%llu map_len=%d\n",
+                        subflow, subflow->local_key, subflow->remote_key,
+                        data_len);
+@@ -505,7 +505,7 @@ static bool mptcp_established_options_mp
+               opts->suboptions = OPTION_MPTCP_MPJ_ACK;
+               memcpy(opts->hmac, subflow->hmac, MPTCPOPT_HMAC_LEN);
+               *size = TCPOLEN_MPTCP_MPJ_ACK;
+-              pr_debug("subflow=%p", subflow);
++              pr_debug("subflow=%p\n", subflow);
+               /* we can use the full delegate action helper only from BH context
+                * If we are in process context - sk is flushing the backlog at
+@@ -673,7 +673,7 @@ static bool mptcp_established_options_ad
+       *size = len;
+       if (drop_other_suboptions) {
+-              pr_debug("drop other suboptions");
++              pr_debug("drop other suboptions\n");
+               opts->suboptions = 0;
+               /* note that e.g. DSS could have written into the memory
+@@ -690,7 +690,7 @@ static bool mptcp_established_options_ad
+                                                    msk->remote_key,
+                                                    &opts->addr);
+       }
+-      pr_debug("addr_id=%d, ahmac=%llu, echo=%d, port=%d",
++      pr_debug("addr_id=%d, ahmac=%llu, echo=%d, port=%d\n",
+                opts->addr.id, opts->ahmac, echo, ntohs(opts->addr.port));
+       return true;
+@@ -721,7 +721,7 @@ static bool mptcp_established_options_rm
+       opts->rm_list = rm_list;
+       for (i = 0; i < opts->rm_list.nr; i++)
+-              pr_debug("rm_list_ids[%d]=%d", i, opts->rm_list.ids[i]);
++              pr_debug("rm_list_ids[%d]=%d\n", i, opts->rm_list.ids[i]);
+       return true;
+ }
+@@ -747,7 +747,7 @@ static bool mptcp_established_options_mp
+       opts->suboptions |= OPTION_MPTCP_PRIO;
+       opts->backup = subflow->request_bkup;
+-      pr_debug("prio=%d", opts->backup);
++      pr_debug("prio=%d\n", opts->backup);
+       return true;
+ }
+@@ -789,7 +789,7 @@ static bool mptcp_established_options_fa
+       opts->suboptions |= OPTION_MPTCP_FASTCLOSE;
+       opts->rcvr_key = msk->remote_key;
+-      pr_debug("FASTCLOSE key=%llu", opts->rcvr_key);
++      pr_debug("FASTCLOSE key=%llu\n", opts->rcvr_key);
+       MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPFASTCLOSETX);
+       return true;
+ }
+@@ -811,7 +811,7 @@ static bool mptcp_established_options_mp
+       opts->suboptions |= OPTION_MPTCP_FAIL;
+       opts->fail_seq = subflow->map_seq;
+-      pr_debug("MP_FAIL fail_seq=%llu", opts->fail_seq);
++      pr_debug("MP_FAIL fail_seq=%llu\n", opts->fail_seq);
+       MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPFAILTX);
+       return true;
+@@ -899,7 +899,7 @@ bool mptcp_synack_options(const struct r
+               opts->csum_reqd = subflow_req->csum_reqd;
+               opts->allow_join_id0 = subflow_req->allow_join_id0;
+               *size = TCPOLEN_MPTCP_MPC_SYNACK;
+-              pr_debug("subflow_req=%p, local_key=%llu",
++              pr_debug("subflow_req=%p, local_key=%llu\n",
+                        subflow_req, subflow_req->local_key);
+               return true;
+       } else if (subflow_req->mp_join) {
+@@ -908,7 +908,7 @@ bool mptcp_synack_options(const struct r
+               opts->join_id = subflow_req->local_id;
+               opts->thmac = subflow_req->thmac;
+               opts->nonce = subflow_req->local_nonce;
+-              pr_debug("req=%p, bkup=%u, id=%u, thmac=%llu, nonce=%u",
++              pr_debug("req=%p, bkup=%u, id=%u, thmac=%llu, nonce=%u\n",
+                        subflow_req, opts->backup, opts->join_id,
+                        opts->thmac, opts->nonce);
+               *size = TCPOLEN_MPTCP_MPJ_SYNACK;
+--- a/net/mptcp/pm.c
++++ b/net/mptcp/pm.c
+@@ -20,7 +20,7 @@ int mptcp_pm_announce_addr(struct mptcp_
+ {
+       u8 add_addr = READ_ONCE(msk->pm.addr_signal);
+-      pr_debug("msk=%p, local_id=%d, echo=%d", msk, addr->id, echo);
++      pr_debug("msk=%p, local_id=%d, echo=%d\n", msk, addr->id, echo);
+       lockdep_assert_held(&msk->pm.lock);
+@@ -45,7 +45,7 @@ int mptcp_pm_remove_addr(struct mptcp_so
+ {
+       u8 rm_addr = READ_ONCE(msk->pm.addr_signal);
+-      pr_debug("msk=%p, rm_list_nr=%d", msk, rm_list->nr);
++      pr_debug("msk=%p, rm_list_nr=%d\n", msk, rm_list->nr);
+       if (rm_addr) {
+               pr_warn("addr_signal error, rm_addr=%d", rm_addr);
+@@ -65,7 +65,7 @@ void mptcp_pm_new_connection(struct mptc
+ {
+       struct mptcp_pm_data *pm = &msk->pm;
+-      pr_debug("msk=%p, token=%u side=%d", msk, msk->token, server_side);
++      pr_debug("msk=%p, token=%u side=%d\n", msk, msk->token, server_side);
+       WRITE_ONCE(pm->server_side, server_side);
+       mptcp_event(MPTCP_EVENT_CREATED, msk, ssk, GFP_ATOMIC);
+@@ -89,7 +89,7 @@ bool mptcp_pm_allow_new_subflow(struct m
+       subflows_max = mptcp_pm_get_subflows_max(msk);
+-      pr_debug("msk=%p subflows=%d max=%d allow=%d", msk, pm->subflows,
++      pr_debug("msk=%p subflows=%d max=%d allow=%d\n", msk, pm->subflows,
+                subflows_max, READ_ONCE(pm->accept_subflow));
+       /* try to avoid acquiring the lock below */
+@@ -113,7 +113,7 @@ bool mptcp_pm_allow_new_subflow(struct m
+ static bool mptcp_pm_schedule_work(struct mptcp_sock *msk,
+                                  enum mptcp_pm_status new_status)
+ {
+-      pr_debug("msk=%p status=%x new=%lx", msk, msk->pm.status,
++      pr_debug("msk=%p status=%x new=%lx\n", msk, msk->pm.status,
+                BIT(new_status));
+       if (msk->pm.status & BIT(new_status))
+               return false;
+@@ -128,7 +128,7 @@ void mptcp_pm_fully_established(struct m
+       struct mptcp_pm_data *pm = &msk->pm;
+       bool announce = false;
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       spin_lock_bh(&pm->lock);
+@@ -152,14 +152,14 @@ void mptcp_pm_fully_established(struct m
+ void mptcp_pm_connection_closed(struct mptcp_sock *msk)
+ {
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+ }
+ void mptcp_pm_subflow_established(struct mptcp_sock *msk)
+ {
+       struct mptcp_pm_data *pm = &msk->pm;
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       if (!READ_ONCE(pm->work_pending))
+               return;
+@@ -211,7 +211,7 @@ void mptcp_pm_add_addr_received(const st
+       struct mptcp_sock *msk = mptcp_sk(subflow->conn);
+       struct mptcp_pm_data *pm = &msk->pm;
+-      pr_debug("msk=%p remote_id=%d accept=%d", msk, addr->id,
++      pr_debug("msk=%p remote_id=%d accept=%d\n", msk, addr->id,
+                READ_ONCE(pm->accept_addr));
+       mptcp_event_addr_announced(ssk, addr);
+@@ -244,7 +244,7 @@ void mptcp_pm_add_addr_echoed(struct mpt
+ {
+       struct mptcp_pm_data *pm = &msk->pm;
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       spin_lock_bh(&pm->lock);
+@@ -268,7 +268,7 @@ void mptcp_pm_rm_addr_received(struct mp
+       struct mptcp_pm_data *pm = &msk->pm;
+       u8 i;
+-      pr_debug("msk=%p remote_ids_nr=%d", msk, rm_list->nr);
++      pr_debug("msk=%p remote_ids_nr=%d\n", msk, rm_list->nr);
+       for (i = 0; i < rm_list->nr; i++)
+               mptcp_event_addr_removed(msk, rm_list->ids[i]);
+@@ -307,19 +307,19 @@ void mptcp_pm_mp_fail_received(struct so
+       struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
+       struct mptcp_sock *msk = mptcp_sk(subflow->conn);
+-      pr_debug("fail_seq=%llu", fail_seq);
++      pr_debug("fail_seq=%llu\n", fail_seq);
+       if (!READ_ONCE(msk->allow_infinite_fallback))
+               return;
+       if (!subflow->fail_tout) {
+-              pr_debug("send MP_FAIL response and infinite map");
++              pr_debug("send MP_FAIL response and infinite map\n");
+               subflow->send_mp_fail = 1;
+               subflow->send_infinite_map = 1;
+               tcp_send_ack(sk);
+       } else {
+-              pr_debug("MP_FAIL response received");
++              pr_debug("MP_FAIL response received\n");
+               WRITE_ONCE(subflow->fail_tout, 0);
+       }
+ }
+--- a/net/mptcp/pm_netlink.c
++++ b/net/mptcp/pm_netlink.c
+@@ -305,7 +305,7 @@ static void mptcp_pm_add_timer(struct ti
+       struct mptcp_sock *msk = entry->sock;
+       struct sock *sk = (struct sock *)msk;
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       if (!msk)
+               return;
+@@ -324,7 +324,7 @@ static void mptcp_pm_add_timer(struct ti
+       spin_lock_bh(&msk->pm.lock);
+       if (!mptcp_pm_should_add_signal_addr(msk)) {
+-              pr_debug("retransmit ADD_ADDR id=%d", entry->addr.id);
++              pr_debug("retransmit ADD_ADDR id=%d\n", entry->addr.id);
+               mptcp_pm_announce_addr(msk, &entry->addr, false);
+               mptcp_pm_add_addr_send_ack(msk);
+               entry->retrans_times++;
+@@ -405,7 +405,7 @@ void mptcp_pm_free_anno_list(struct mptc
+       struct sock *sk = (struct sock *)msk;
+       LIST_HEAD(free_list);
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       spin_lock_bh(&msk->pm.lock);
+       list_splice_init(&msk->pm.anno_list, &free_list);
+@@ -482,7 +482,7 @@ static void __mptcp_pm_send_ack(struct m
+       struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
+       bool slow;
+-      pr_debug("send ack for %s",
++      pr_debug("send ack for %s\n",
+                prio ? "mp_prio" : (mptcp_pm_should_add_signal(msk) ? "add_addr" : "rm_addr"));
+       slow = lock_sock_fast(ssk);
+@@ -732,7 +732,7 @@ static void mptcp_pm_nl_add_addr_receive
+       add_addr_accept_max = mptcp_pm_get_add_addr_accept_max(msk);
+       subflows_max = mptcp_pm_get_subflows_max(msk);
+-      pr_debug("accepted %d:%d remote family %d",
++      pr_debug("accepted %d:%d remote family %d\n",
+                msk->pm.add_addr_accepted, add_addr_accept_max,
+                msk->pm.remote.family);
+@@ -803,7 +803,7 @@ int mptcp_pm_nl_mp_prio_send_ack(struct
+ {
+       struct mptcp_subflow_context *subflow;
+-      pr_debug("bkup=%d", bkup);
++      pr_debug("bkup=%d\n", bkup);
+       mptcp_for_each_subflow(msk, subflow) {
+               struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
+@@ -834,7 +834,7 @@ static void mptcp_pm_nl_rm_addr_or_subfl
+       struct sock *sk = (struct sock *)msk;
+       u8 i;
+-      pr_debug("%s rm_list_nr %d",
++      pr_debug("%s rm_list_nr %d\n",
+                rm_type == MPTCP_MIB_RMADDR ? "address" : "subflow", rm_list->nr);
+       msk_owned_by_me(msk);
+@@ -865,7 +865,7 @@ static void mptcp_pm_nl_rm_addr_or_subfl
+                       if (rm_type == MPTCP_MIB_RMSUBFLOW && id != rm_id)
+                               continue;
+-                      pr_debug(" -> %s rm_list_ids[%d]=%u local_id=%u remote_id=%u mpc_id=%u",
++                      pr_debug(" -> %s rm_list_ids[%d]=%u local_id=%u remote_id=%u mpc_id=%u\n",
+                                rm_type == MPTCP_MIB_RMADDR ? "address" : "subflow",
+                                i, rm_id, id, remote_id, msk->mpc_endpoint_id);
+                       spin_unlock_bh(&msk->pm.lock);
+@@ -922,7 +922,7 @@ void mptcp_pm_nl_work(struct mptcp_sock
+       spin_lock_bh(&msk->pm.lock);
+-      pr_debug("msk=%p status=%x", msk, pm->status);
++      pr_debug("msk=%p status=%x\n", msk, pm->status);
+       if (pm->status & BIT(MPTCP_PM_ADD_ADDR_RECEIVED)) {
+               pm->status &= ~BIT(MPTCP_PM_ADD_ADDR_RECEIVED);
+               mptcp_pm_nl_add_addr_received(msk);
+@@ -1540,7 +1540,7 @@ static int mptcp_nl_remove_subflow_and_s
+       long s_slot = 0, s_num = 0;
+       struct mptcp_sock *msk;
+-      pr_debug("remove_id=%d", addr->id);
++      pr_debug("remove_id=%d\n", addr->id);
+       while ((msk = mptcp_token_iter_next(net, &s_slot, &s_num)) != NULL) {
+               struct sock *sk = (struct sock *)msk;
+--- a/net/mptcp/protocol.c
++++ b/net/mptcp/protocol.c
+@@ -152,7 +152,7 @@ static bool mptcp_try_coalesce(struct so
+           !skb_try_coalesce(to, from, &fragstolen, &delta))
+               return false;
+-      pr_debug("colesced seq %llx into %llx new len %d new end seq %llx",
++      pr_debug("colesced seq %llx into %llx new len %d new end seq %llx\n",
+                MPTCP_SKB_CB(from)->map_seq, MPTCP_SKB_CB(to)->map_seq,
+                to->len, MPTCP_SKB_CB(from)->end_seq);
+       MPTCP_SKB_CB(to)->end_seq = MPTCP_SKB_CB(from)->end_seq;
+@@ -230,7 +230,7 @@ static void mptcp_data_queue_ofo(struct
+       end_seq = MPTCP_SKB_CB(skb)->end_seq;
+       max_seq = atomic64_read(&msk->rcv_wnd_sent);
+-      pr_debug("msk=%p seq=%llx limit=%llx empty=%d", msk, seq, max_seq,
++      pr_debug("msk=%p seq=%llx limit=%llx empty=%d\n", msk, seq, max_seq,
+                RB_EMPTY_ROOT(&msk->out_of_order_queue));
+       if (after64(end_seq, max_seq)) {
+               /* out of window */
+@@ -653,7 +653,7 @@ static bool __mptcp_move_skbs_from_subfl
+               }
+       }
+-      pr_debug("msk=%p ssk=%p", msk, ssk);
++      pr_debug("msk=%p ssk=%p\n", msk, ssk);
+       tp = tcp_sk(ssk);
+       do {
+               u32 map_remaining, offset;
+@@ -732,7 +732,7 @@ static bool __mptcp_ofo_queue(struct mpt
+       u64 end_seq;
+       p = rb_first(&msk->out_of_order_queue);
+-      pr_debug("msk=%p empty=%d", msk, RB_EMPTY_ROOT(&msk->out_of_order_queue));
++      pr_debug("msk=%p empty=%d\n", msk, RB_EMPTY_ROOT(&msk->out_of_order_queue));
+       while (p) {
+               skb = rb_to_skb(p);
+               if (after64(MPTCP_SKB_CB(skb)->map_seq, msk->ack_seq))
+@@ -754,7 +754,7 @@ static bool __mptcp_ofo_queue(struct mpt
+                       int delta = msk->ack_seq - MPTCP_SKB_CB(skb)->map_seq;
+                       /* skip overlapping data, if any */
+-                      pr_debug("uncoalesced seq=%llx ack seq=%llx delta=%d",
++                      pr_debug("uncoalesced seq=%llx ack seq=%llx delta=%d\n",
+                                MPTCP_SKB_CB(skb)->map_seq, msk->ack_seq,
+                                delta);
+                       MPTCP_SKB_CB(skb)->offset += delta;
+@@ -1292,7 +1292,7 @@ static int mptcp_sendmsg_frag(struct soc
+       size_t copy;
+       int i;
+-      pr_debug("msk=%p ssk=%p sending dfrag at seq=%llu len=%u already sent=%u",
++      pr_debug("msk=%p ssk=%p sending dfrag at seq=%llu len=%u already sent=%u\n",
+                msk, ssk, dfrag->data_seq, dfrag->data_len, info->sent);
+       if (WARN_ON_ONCE(info->sent > info->limit ||
+@@ -1393,7 +1393,7 @@ alloc_skb:
+       mpext->use_map = 1;
+       mpext->dsn64 = 1;
+-      pr_debug("data_seq=%llu subflow_seq=%u data_len=%u dsn64=%d",
++      pr_debug("data_seq=%llu subflow_seq=%u data_len=%u dsn64=%d\n",
+                mpext->data_seq, mpext->subflow_seq, mpext->data_len,
+                mpext->dsn64);
+@@ -1870,7 +1870,7 @@ static int mptcp_sendmsg(struct sock *sk
+                       if (!msk->first_pending)
+                               WRITE_ONCE(msk->first_pending, dfrag);
+               }
+-              pr_debug("msk=%p dfrag at seq=%llu len=%u sent=%u new=%d", msk,
++              pr_debug("msk=%p dfrag at seq=%llu len=%u sent=%u new=%d\n", msk,
+                        dfrag->data_seq, dfrag->data_len, dfrag->already_sent,
+                        !dfrag_collapsed);
+@@ -2226,7 +2226,7 @@ static int mptcp_recvmsg(struct sock *sk
+                       }
+               }
+-              pr_debug("block timeout %ld", timeo);
++              pr_debug("block timeout %ld\n", timeo);
+               sk_wait_data(sk, &timeo, NULL);
+       }
+@@ -2242,7 +2242,7 @@ out_err:
+               }
+       }
+-      pr_debug("msk=%p rx queue empty=%d:%d copied=%d",
++      pr_debug("msk=%p rx queue empty=%d:%d copied=%d\n",
+                msk, skb_queue_empty_lockless(&sk->sk_receive_queue),
+                skb_queue_empty(&msk->receive_queue), copied);
+       if (!(flags & MSG_PEEK))
+@@ -2697,7 +2697,7 @@ static void mptcp_mp_fail_no_response(st
+       if (!ssk)
+               return;
+-      pr_debug("MP_FAIL doesn't respond, reset the subflow");
++      pr_debug("MP_FAIL doesn't respond, reset the subflow\n");
+       slow = lock_sock_fast(ssk);
+       mptcp_subflow_reset(ssk);
+@@ -2869,7 +2869,7 @@ void mptcp_subflow_shutdown(struct sock
+               break;
+       default:
+               if (__mptcp_check_fallback(mptcp_sk(sk))) {
+-                      pr_debug("Fallback");
++                      pr_debug("Fallback\n");
+                       ssk->sk_shutdown |= how;
+                       tcp_shutdown(ssk, how);
+@@ -2879,7 +2879,7 @@ void mptcp_subflow_shutdown(struct sock
+                       WRITE_ONCE(mptcp_sk(sk)->snd_una, mptcp_sk(sk)->snd_nxt);
+                       mptcp_schedule_work(sk);
+               } else {
+-                      pr_debug("Sending DATA_FIN on subflow %p", ssk);
++                      pr_debug("Sending DATA_FIN on subflow %p\n", ssk);
+                       tcp_send_ack(ssk);
+                       if (!mptcp_rtx_timer_pending(sk))
+                               mptcp_reset_rtx_timer(sk);
+@@ -2922,7 +2922,7 @@ static void mptcp_check_send_data_fin(st
+       struct mptcp_subflow_context *subflow;
+       struct mptcp_sock *msk = mptcp_sk(sk);
+-      pr_debug("msk=%p snd_data_fin_enable=%d pending=%d snd_nxt=%llu write_seq=%llu",
++      pr_debug("msk=%p snd_data_fin_enable=%d pending=%d snd_nxt=%llu write_seq=%llu\n",
+                msk, msk->snd_data_fin_enable, !!mptcp_send_head(sk),
+                msk->snd_nxt, msk->write_seq);
+@@ -2946,7 +2946,7 @@ static void __mptcp_wr_shutdown(struct s
+ {
+       struct mptcp_sock *msk = mptcp_sk(sk);
+-      pr_debug("msk=%p snd_data_fin_enable=%d shutdown=%x state=%d pending=%d",
++      pr_debug("msk=%p snd_data_fin_enable=%d shutdown=%x state=%d pending=%d\n",
+                msk, msk->snd_data_fin_enable, sk->sk_shutdown, sk->sk_state,
+                !!mptcp_send_head(sk));
+@@ -2961,7 +2961,7 @@ static void __mptcp_destroy_sock(struct
+ {
+       struct mptcp_sock *msk = mptcp_sk(sk);
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       might_sleep();
+@@ -3073,7 +3073,7 @@ cleanup:
+               inet_sk_state_store(sk, TCP_CLOSE);
+       sock_hold(sk);
+-      pr_debug("msk=%p state=%d", sk, sk->sk_state);
++      pr_debug("msk=%p state=%d\n", sk, sk->sk_state);
+       if (mptcp_sk(sk)->token)
+               mptcp_event(MPTCP_EVENT_CLOSED, msk, NULL, GFP_KERNEL);
+@@ -3331,12 +3331,12 @@ static struct sock *mptcp_accept(struct
+               return NULL;
+       }
+-      pr_debug("msk=%p, listener=%p", msk, mptcp_subflow_ctx(listener->sk));
++      pr_debug("msk=%p, listener=%p\n", msk, mptcp_subflow_ctx(listener->sk));
+       newsk = inet_csk_accept(listener->sk, flags, err, kern);
+       if (!newsk)
+               return NULL;
+-      pr_debug("msk=%p, subflow is mptcp=%d", msk, sk_is_mptcp(newsk));
++      pr_debug("msk=%p, subflow is mptcp=%d\n", msk, sk_is_mptcp(newsk));
+       if (sk_is_mptcp(newsk)) {
+               struct mptcp_subflow_context *subflow;
+               struct sock *new_mptcp_sock;
+@@ -3550,7 +3550,7 @@ static int mptcp_get_port(struct sock *s
+       struct socket *ssock;
+       ssock = msk->subflow;
+-      pr_debug("msk=%p, subflow=%p", msk, ssock);
++      pr_debug("msk=%p, subflow=%p\n", msk, ssock);
+       if (WARN_ON_ONCE(!ssock))
+               return -EINVAL;
+@@ -3568,7 +3568,7 @@ void mptcp_finish_connect(struct sock *s
+       sk = subflow->conn;
+       msk = mptcp_sk(sk);
+-      pr_debug("msk=%p, token=%u", sk, subflow->token);
++      pr_debug("msk=%p, token=%u\n", sk, subflow->token);
+       mptcp_crypto_key_sha(subflow->remote_key, NULL, &ack_seq);
+       ack_seq++;
+@@ -3608,7 +3608,7 @@ bool mptcp_finish_join(struct sock *ssk)
+       struct sock *parent = (void *)msk;
+       bool ret = true;
+-      pr_debug("msk=%p, subflow=%p", msk, subflow);
++      pr_debug("msk=%p, subflow=%p\n", msk, subflow);
+       /* mptcp socket already closing? */
+       if (!mptcp_is_fully_established(parent)) {
+@@ -3653,7 +3653,7 @@ err_prohibited:
+ static void mptcp_shutdown(struct sock *sk, int how)
+ {
+-      pr_debug("sk=%p, how=%d", sk, how);
++      pr_debug("sk=%p, how=%d\n", sk, how);
+       if ((how & SEND_SHUTDOWN) && mptcp_close_state(sk))
+               __mptcp_wr_shutdown(sk);
+@@ -3854,7 +3854,7 @@ static int mptcp_listen(struct socket *s
+       struct socket *ssock;
+       int err;
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       lock_sock(sk);
+@@ -3889,7 +3889,7 @@ static int mptcp_stream_accept(struct so
+       struct socket *ssock;
+       int err;
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       /* Buggy applications can call accept on socket states other then LISTEN
+        * but no need to allocate the first subflow just to error out.
+@@ -3963,7 +3963,7 @@ static __poll_t mptcp_poll(struct file *
+       sock_poll_wait(file, sock, wait);
+       state = inet_sk_state_load(sk);
+-      pr_debug("msk=%p state=%d flags=%lx", msk, state, msk->flags);
++      pr_debug("msk=%p state=%d flags=%lx\n", msk, state, msk->flags);
+       if (state == TCP_LISTEN) {
+               struct socket *ssock = READ_ONCE(msk->subflow);
+--- a/net/mptcp/protocol.h
++++ b/net/mptcp/protocol.h
+@@ -973,7 +973,7 @@ static inline bool mptcp_check_fallback(
+ static inline void __mptcp_do_fallback(struct mptcp_sock *msk)
+ {
+       if (test_bit(MPTCP_FALLBACK_DONE, &msk->flags)) {
+-              pr_debug("TCP fallback already done (msk=%p)", msk);
++              pr_debug("TCP fallback already done (msk=%p)\n", msk);
+               return;
+       }
+       set_bit(MPTCP_FALLBACK_DONE, &msk->flags);
+@@ -1000,7 +1000,7 @@ static inline void mptcp_do_fallback(str
+       }
+ }
+-#define pr_fallback(a) pr_debug("%s:fallback to TCP (msk=%p)", __func__, a)
++#define pr_fallback(a) pr_debug("%s:fallback to TCP (msk=%p)\n", __func__, a)
+ static inline bool mptcp_check_infinite_map(struct sk_buff *skb)
+ {
+--- a/net/mptcp/sockopt.c
++++ b/net/mptcp/sockopt.c
+@@ -881,7 +881,7 @@ int mptcp_setsockopt(struct sock *sk, in
+       struct mptcp_sock *msk = mptcp_sk(sk);
+       struct sock *ssk;
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       if (level == SOL_SOCKET)
+               return mptcp_setsockopt_sol_socket(msk, optname, optval, optlen);
+@@ -1292,7 +1292,7 @@ int mptcp_getsockopt(struct sock *sk, in
+       struct mptcp_sock *msk = mptcp_sk(sk);
+       struct sock *ssk;
+-      pr_debug("msk=%p", msk);
++      pr_debug("msk=%p\n", msk);
+       /* @@ the meaning of setsockopt() when the socket is connected and
+        * there are multiple subflows is not yet defined. It is up to the
+--- a/net/mptcp/subflow.c
++++ b/net/mptcp/subflow.c
+@@ -39,7 +39,7 @@ static void subflow_req_destructor(struc
+ {
+       struct mptcp_subflow_request_sock *subflow_req = mptcp_subflow_rsk(req);
+-      pr_debug("subflow_req=%p", subflow_req);
++      pr_debug("subflow_req=%p\n", subflow_req);
+       if (subflow_req->msk)
+               sock_put((struct sock *)subflow_req->msk);
+@@ -145,7 +145,7 @@ static int subflow_check_req(struct requ
+       struct mptcp_options_received mp_opt;
+       bool opt_mp_capable, opt_mp_join;
+-      pr_debug("subflow_req=%p, listener=%p", subflow_req, listener);
++      pr_debug("subflow_req=%p, listener=%p\n", subflow_req, listener);
+ #ifdef CONFIG_TCP_MD5SIG
+       /* no MPTCP if MD5SIG is enabled on this socket or we may run out of
+@@ -218,7 +218,7 @@ again:
+               }
+               if (subflow_use_different_sport(subflow_req->msk, sk_listener)) {
+-                      pr_debug("syn inet_sport=%d %d",
++                      pr_debug("syn inet_sport=%d %d\n",
+                                ntohs(inet_sk(sk_listener)->inet_sport),
+                                ntohs(inet_sk((struct sock *)subflow_req->msk)->inet_sport));
+                       if (!mptcp_pm_sport_in_anno_list(subflow_req->msk, sk_listener)) {
+@@ -237,7 +237,7 @@ again:
+                               return -EPERM;
+               }
+-              pr_debug("token=%u, remote_nonce=%u msk=%p", subflow_req->token,
++              pr_debug("token=%u, remote_nonce=%u msk=%p\n", subflow_req->token,
+                        subflow_req->remote_nonce, subflow_req->msk);
+       }
+@@ -415,7 +415,7 @@ static void subflow_finish_connect(struc
+       subflow->rel_write_seq = 1;
+       subflow->conn_finished = 1;
+       subflow->ssn_offset = TCP_SKB_CB(skb)->seq;
+-      pr_debug("subflow=%p synack seq=%x", subflow, subflow->ssn_offset);
++      pr_debug("subflow=%p synack seq=%x\n", subflow, subflow->ssn_offset);
+       mptcp_get_options(skb, &mp_opt);
+       if (subflow->request_mptcp) {
+@@ -434,7 +434,7 @@ static void subflow_finish_connect(struc
+               subflow->mp_capable = 1;
+               subflow->can_ack = 1;
+               subflow->remote_key = mp_opt.sndr_key;
+-              pr_debug("subflow=%p, remote_key=%llu", subflow,
++              pr_debug("subflow=%p, remote_key=%llu\n", subflow,
+                        subflow->remote_key);
+               MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPCAPABLEACTIVEACK);
+               mptcp_finish_connect(sk);
+@@ -451,7 +451,7 @@ static void subflow_finish_connect(struc
+               subflow->thmac = mp_opt.thmac;
+               subflow->remote_nonce = mp_opt.nonce;
+               WRITE_ONCE(subflow->remote_id, mp_opt.join_id);
+-              pr_debug("subflow=%p, thmac=%llu, remote_nonce=%u backup=%d",
++              pr_debug("subflow=%p, thmac=%llu, remote_nonce=%u backup=%d\n",
+                        subflow, subflow->thmac, subflow->remote_nonce,
+                        subflow->backup);
+@@ -477,7 +477,7 @@ static void subflow_finish_connect(struc
+                       MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_JOINSYNACKBACKUPRX);
+               if (subflow_use_different_dport(mptcp_sk(parent), sk)) {
+-                      pr_debug("synack inet_dport=%d %d",
++                      pr_debug("synack inet_dport=%d %d\n",
+                                ntohs(inet_sk(sk)->inet_dport),
+                                ntohs(inet_sk(parent)->inet_dport));
+                       MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_JOINPORTSYNACKRX);
+@@ -548,7 +548,7 @@ static int subflow_v4_conn_request(struc
+ {
+       struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
+-      pr_debug("subflow=%p", subflow);
++      pr_debug("subflow=%p\n", subflow);
+       /* Never answer to SYNs sent to broadcast or multicast */
+       if (skb_rtable(skb)->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))
+@@ -579,7 +579,7 @@ static int subflow_v6_conn_request(struc
+ {
+       struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
+-      pr_debug("subflow=%p", subflow);
++      pr_debug("subflow=%p\n", subflow);
+       if (skb->protocol == htons(ETH_P_IP))
+               return subflow_v4_conn_request(sk, skb);
+@@ -697,7 +697,7 @@ static struct sock *subflow_syn_recv_soc
+       struct mptcp_sock *owner;
+       struct sock *child;
+-      pr_debug("listener=%p, req=%p, conn=%p", listener, req, listener->conn);
++      pr_debug("listener=%p, req=%p, conn=%p\n", listener, req, listener->conn);
+       /* After child creation we must look for MPC even when options
+        * are not parsed
+@@ -788,7 +788,7 @@ create_child:
+                       ctx->conn = (struct sock *)owner;
+                       if (subflow_use_different_sport(owner, sk)) {
+-                              pr_debug("ack inet_sport=%d %d",
++                              pr_debug("ack inet_sport=%d %d\n",
+                                        ntohs(inet_sk(sk)->inet_sport),
+                                        ntohs(inet_sk((struct sock *)owner)->inet_sport));
+                               if (!mptcp_pm_sport_in_anno_list(owner, sk)) {
+@@ -845,7 +845,7 @@ enum mapping_status {
+ static void dbg_bad_map(struct mptcp_subflow_context *subflow, u32 ssn)
+ {
+-      pr_debug("Bad mapping: ssn=%d map_seq=%d map_data_len=%d",
++      pr_debug("Bad mapping: ssn=%d map_seq=%d map_data_len=%d\n",
+                ssn, subflow->map_subflow_seq, subflow->map_data_len);
+ }
+@@ -1005,7 +1005,7 @@ static enum mapping_status get_mapping_s
+       data_len = mpext->data_len;
+       if (data_len == 0) {
+-              pr_debug("infinite mapping received");
++              pr_debug("infinite mapping received\n");
+               MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_INFINITEMAPRX);
+               subflow->map_data_len = 0;
+               return MAPPING_INVALID;
+@@ -1015,7 +1015,7 @@ static enum mapping_status get_mapping_s
+               if (data_len == 1) {
+                       bool updated = mptcp_update_rcv_data_fin(msk, mpext->data_seq,
+                                                                mpext->dsn64);
+-                      pr_debug("DATA_FIN with no payload seq=%llu", mpext->data_seq);
++                      pr_debug("DATA_FIN with no payload seq=%llu\n", mpext->data_seq);
+                       if (subflow->map_valid) {
+                               /* A DATA_FIN might arrive in a DSS
+                                * option before the previous mapping
+@@ -1040,7 +1040,7 @@ static enum mapping_status get_mapping_s
+                               data_fin_seq &= GENMASK_ULL(31, 0);
+                       mptcp_update_rcv_data_fin(msk, data_fin_seq, mpext->dsn64);
+-                      pr_debug("DATA_FIN with mapping seq=%llu dsn64=%d",
++                      pr_debug("DATA_FIN with mapping seq=%llu dsn64=%d\n",
+                                data_fin_seq, mpext->dsn64);
+               }
+@@ -1087,7 +1087,7 @@ static enum mapping_status get_mapping_s
+       if (unlikely(subflow->map_csum_reqd != csum_reqd))
+               return MAPPING_INVALID;
+-      pr_debug("new map seq=%llu subflow_seq=%u data_len=%u csum=%d:%u",
++      pr_debug("new map seq=%llu subflow_seq=%u data_len=%u csum=%d:%u\n",
+                subflow->map_seq, subflow->map_subflow_seq,
+                subflow->map_data_len, subflow->map_csum_reqd,
+                subflow->map_data_csum);
+@@ -1122,7 +1122,7 @@ static void mptcp_subflow_discard_data(s
+       avail_len = skb->len - offset;
+       incr = limit >= avail_len ? avail_len + fin : limit;
+-      pr_debug("discarding=%d len=%d offset=%d seq=%d", incr, skb->len,
++      pr_debug("discarding=%d len=%d offset=%d seq=%d\n", incr, skb->len,
+                offset, subflow->map_subflow_seq);
+       MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_DUPDATA);
+       tcp_sk(ssk)->copied_seq += incr;
+@@ -1231,7 +1231,7 @@ static bool subflow_check_data_avail(str
+               old_ack = READ_ONCE(msk->ack_seq);
+               ack_seq = mptcp_subflow_get_mapped_dsn(subflow);
+-              pr_debug("msk ack_seq=%llx subflow ack_seq=%llx", old_ack,
++              pr_debug("msk ack_seq=%llx subflow ack_seq=%llx\n", old_ack,
+                        ack_seq);
+               if (unlikely(before64(ack_seq, old_ack))) {
+                       mptcp_subflow_discard_data(ssk, skb, old_ack - ack_seq);
+@@ -1303,7 +1303,7 @@ bool mptcp_subflow_data_available(struct
+               subflow->map_valid = 0;
+               WRITE_ONCE(subflow->data_avail, MPTCP_SUBFLOW_NODATA);
+-              pr_debug("Done with mapping: seq=%u data_len=%u",
++              pr_debug("Done with mapping: seq=%u data_len=%u\n",
+                        subflow->map_subflow_seq,
+                        subflow->map_data_len);
+       }
+@@ -1403,7 +1403,7 @@ void mptcpv6_handle_mapped(struct sock *
+       target = mapped ? &subflow_v6m_specific : subflow_default_af_ops(sk);
+-      pr_debug("subflow=%p family=%d ops=%p target=%p mapped=%d",
++      pr_debug("subflow=%p family=%d ops=%p target=%p mapped=%d\n",
+                subflow, sk->sk_family, icsk->icsk_af_ops, target, mapped);
+       if (likely(icsk->icsk_af_ops == target))
+@@ -1497,7 +1497,7 @@ int __mptcp_subflow_connect(struct sock
+               goto failed;
+       mptcp_crypto_key_sha(subflow->remote_key, &remote_token, NULL);
+-      pr_debug("msk=%p remote_token=%u local_id=%d remote_id=%d", msk,
++      pr_debug("msk=%p remote_token=%u local_id=%d remote_id=%d\n", msk,
+                remote_token, local_id, remote_id);
+       subflow->remote_token = remote_token;
+       WRITE_ONCE(subflow->remote_id, remote_id);
+@@ -1626,7 +1626,7 @@ int mptcp_subflow_create_socket(struct s
+       SOCK_INODE(sf)->i_gid = SOCK_INODE(sk->sk_socket)->i_gid;
+       subflow = mptcp_subflow_ctx(sf->sk);
+-      pr_debug("subflow=%p", subflow);
++      pr_debug("subflow=%p\n", subflow);
+       *new_sock = sf;
+       sock_hold(sk);
+@@ -1650,7 +1650,7 @@ static struct mptcp_subflow_context *sub
+       INIT_LIST_HEAD(&ctx->node);
+       INIT_LIST_HEAD(&ctx->delegated_node);
+-      pr_debug("subflow=%p", ctx);
++      pr_debug("subflow=%p\n", ctx);
+       ctx->tcp_sock = sk;
+       WRITE_ONCE(ctx->local_id, -1);
+@@ -1803,7 +1803,7 @@ static int subflow_ulp_init(struct sock
+               goto out;
+       }
+-      pr_debug("subflow=%p, family=%d", ctx, sk->sk_family);
++      pr_debug("subflow=%p, family=%d\n", ctx, sk->sk_family);
+       tp->is_mptcp = 1;
+       ctx->icsk_af_ops = icsk->icsk_af_ops;
diff --git a/queue-6.1/selftests-mptcp-add-explicit-test-case-for-remove-readd.patch b/queue-6.1/selftests-mptcp-add-explicit-test-case-for-remove-readd.patch
new file mode 100644 (file)
index 0000000..2403e06
--- /dev/null
@@ -0,0 +1,67 @@
+From stable+bounces-73009-greg=kroah.com@vger.kernel.org Wed Sep  4 13:06:37 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 13:06:12 +0200
+Subject: selftests: mptcp: add explicit test case for remove/readd
+To: stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: MPTCP Upstream <mptcp@lists.linux.dev>, Paolo Abeni <pabeni@redhat.com>, Matthieu Baerts <matttbe@kernel.org>, "David S . Miller" <davem@davemloft.net>
+Message-ID: <20240904110611.4086328-3-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+From: Paolo Abeni <pabeni@redhat.com>
+
+commit b5e2fb832f48bc01d937a053e0550a1465a2f05d upstream.
+
+Delete and re-create a signal endpoint and ensure that the PM
+actually deletes and re-create the subflow.
+
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Stable-dep-of: e06959e9eebd ("selftests: mptcp: join: test for flush/re-add endpoints")
+[ No conflicts, but adapt the test to the helpers in this version:
+  - run_tests has been modified a few times to reduce the number of
+    positional parameters
+  - no pm_nl_check_endpoint helper
+  - no chk_mptcp_info helper
+  - chk_subflow_nr taking an extra parameter
+  - kill_tests_wait instead of mptcp_lib_kill_wait ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ tools/testing/selftests/net/mptcp/mptcp_join.sh |   23 +++++++++++++++++++++++
+ 1 file changed, 23 insertions(+)
+
+--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
++++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
+@@ -3239,6 +3239,29 @@ userspace_tests()
+               chk_join_nr 1 1 1
+               chk_rm_nr 1 1
+       fi
++
++      # remove and re-add
++      if reset "delete re-add signal" &&
++         mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
++              pm_nl_set_limits $ns1 1 1
++              pm_nl_set_limits $ns2 1 1
++              pm_nl_add_endpoint $ns1 10.0.2.1 id 1 flags signal
++              run_tests $ns1 $ns2 10.0.1.1 4 0 0 speed_20 2>/dev/null &
++              local tests_pid=$!
++
++              wait_mpj $ns2
++              chk_subflow_nr needtitle "before delete" 2
++
++              pm_nl_del_endpoint $ns1 1 10.0.2.1
++              sleep 0.5
++              chk_subflow_nr "" "after delete" 1
++
++              pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
++              wait_mpj $ns2
++              chk_subflow_nr "" "after re-add" 2
++              kill_tests_wait
++      fi
++
+ }
+ endpoint_tests()
diff --git a/queue-6.1/selftests-mptcp-join-check-re-adding-init-endp-with-id.patch b/queue-6.1/selftests-mptcp-join-check-re-adding-init-endp-with-id.patch
new file mode 100644 (file)
index 0000000..d3b28b9
--- /dev/null
@@ -0,0 +1,90 @@
+From stable+bounces-73012-greg=kroah.com@vger.kernel.org Wed Sep  4 13:09:09 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 13:08:31 +0200
+Subject: selftests: mptcp: join: check re-adding init endp with != id
+To: stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: MPTCP Upstream <mptcp@lists.linux.dev>, "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, Mat Martineau <martineau@kernel.org>, Paolo Abeni <pabeni@redhat.com>
+Message-ID: <20240904110830.4089238-2-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit 1c2326fcae4f0c5de8ad0d734ced43a8e5f17dac upstream.
+
+The initial subflow has a special local ID: 0. It is specific per
+connection.
+
+When a global endpoint is deleted and re-added later, it can have a
+different ID, but the kernel should still use the ID 0 if it corresponds
+to the initial address.
+
+This test validates this behaviour: the endpoint linked to the initial
+subflow is removed, and re-added with a different ID.
+
+Note that removing the initial subflow will not decrement the 'subflows'
+counters, which corresponds to the *additional* subflows. On the other
+hand, when the same endpoint is re-added, it will increment this
+counter, as it will be seen as an additional subflow this time.
+
+The 'Fixes' tag here below is the same as the one from the previous
+commit: this patch here is not fixing anything wrong in the selftests,
+but it validates the previous fix for an issue introduced by this commit
+ID.
+
+Fixes: 3ad14f54bd74 ("mptcp: more accurate MPC endpoint tracking")
+Cc: stable@vger.kernel.org
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+[ Conflicts in mptcp_join.sh, because the helpers are different in this
+  version:
+  - run_tests has been modified a few times to reduce the number of
+    positional parameters
+  - no chk_mptcp_info helper
+  - chk_subflow_nr taking an extra parameter
+  - kill_tests_wait instead of mptcp_lib_kill_wait ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ tools/testing/selftests/net/mptcp/mptcp_join.sh |   19 ++++++++++++++-----
+ 1 file changed, 14 insertions(+), 5 deletions(-)
+
+--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
++++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
+@@ -3243,11 +3243,12 @@ userspace_tests()
+       # remove and re-add
+       if reset "delete re-add signal" &&
+          mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
+-              pm_nl_set_limits $ns1 0 2
+-              pm_nl_set_limits $ns2 2 2
++              pm_nl_set_limits $ns1 0 3
++              pm_nl_set_limits $ns2 3 3
+               pm_nl_add_endpoint $ns1 10.0.2.1 id 1 flags signal
+               # broadcast IP: no packet for this address will be received on ns1
+               pm_nl_add_endpoint $ns1 224.0.0.1 id 2 flags signal
++              pm_nl_add_endpoint $ns1 10.0.1.1 id 42 flags signal
+               run_tests $ns1 $ns2 10.0.1.1 4 0 0 speed_20 2>/dev/null &
+               local tests_pid=$!
+@@ -3263,11 +3264,19 @@ userspace_tests()
+               pm_nl_add_endpoint $ns1 10.0.3.1 id 2 flags signal
+               wait_mpj $ns2
+               chk_subflow_nr "" "after re-add" 3
++
++              pm_nl_del_endpoint $ns1 42 10.0.1.1
++              sleep 0.5
++              chk_subflow_nr "" "after delete ID 0" 2
++
++              pm_nl_add_endpoint $ns1 10.0.1.1 id 99 flags signal
++              wait_mpj $ns2
++              chk_subflow_nr "" "after re-add" 3
+               kill_tests_wait
+-              chk_join_nr 3 3 3
+-              chk_add_nr 4 4
+-              chk_rm_nr 2 1 invert
++              chk_join_nr 4 4 4
++              chk_add_nr 5 5
++              chk_rm_nr 3 2 invert
+       fi
+ }
diff --git a/queue-6.1/selftests-mptcp-join-check-re-using-id-of-closed-subflow.patch b/queue-6.1/selftests-mptcp-join-check-re-using-id-of-closed-subflow.patch
new file mode 100644 (file)
index 0000000..9d31682
--- /dev/null
@@ -0,0 +1,104 @@
+From matttbe@kernel.org Wed Sep  4 13:05:24 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 13:05:11 +0200
+Subject: selftests: mptcp: join: check re-using ID of closed subflow
+To: stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: MPTCP Upstream <mptcp@lists.linux.dev>, "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, Mat Martineau <martineau@kernel.org>, Jakub Kicinski <kuba@kernel.org>
+Message-ID: <20240904110510.4085066-2-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit 65fb58afa341ad68e71e5c4d816b407e6a683a66 upstream.
+
+This test extends "delete and re-add" to validate the previous commit. A
+new 'subflow' endpoint is added, but the subflow request will be
+rejected. The result is that no subflow will be established from this
+address.
+
+Later, the endpoint is removed and re-added after having cleared the
+firewall rule. Before the previous commit, the client would not have
+been able to create this new subflow.
+
+While at it, extra checks have been added to validate the expected
+numbers of MPJ and RM_ADDR.
+
+The 'Fixes' tag here below is the same as the one from the previous
+commit: this patch here is not fixing anything wrong in the selftests,
+but it validates the previous fix for an issue introduced by this commit
+ID.
+
+Fixes: b6c08380860b ("mptcp: remove addr and subflow in PM netlink")
+Cc: stable@vger.kernel.org
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20240819-net-mptcp-pm-reusing-id-v1-4-38035d40de5b@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+[ Conflicts in mptcp_join.sh, because this subtest has been modified in
+  newer versions, e.g. commit 9095ce97bf8a ("selftests: mptcp: add
+  mptcp_info tests") added chk_mptcp_info check, commit 03668c65d153
+  ("selftests: mptcp: join: rework detailed report") changed the way
+  the info are displayed, commit 04b57c9e096a ("selftests: mptcp: join:
+  stop transfer when check is done (part 2)") uses the new
+  mptcp_lib_kill_wait helper instead of kill_tests_wait.
+  Conflicts have been resolved by not using the new helpers, the rest
+  was the same. ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ tools/testing/selftests/net/mptcp/mptcp_join.sh |   25 +++++++++++++++++++-----
+ 1 file changed, 20 insertions(+), 5 deletions(-)
+
+--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
++++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
+@@ -402,9 +402,10 @@ reset_with_tcp_filter()
+       local ns="${!1}"
+       local src="${2}"
+       local target="${3}"
++      local chain="${4:-INPUT}"
+       if ! ip netns exec "${ns}" ${iptables} \
+-                      -A INPUT \
++                      -A "${chain}" \
+                       -s "${src}" \
+                       -p tcp \
+                       -j "${target}"; then
+@@ -3265,10 +3266,10 @@ endpoint_tests()
+               kill_tests_wait
+       fi
+-      if reset "delete and re-add" &&
++      if reset_with_tcp_filter "delete and re-add" ns2 10.0.3.2 REJECT OUTPUT &&
+          mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
+-              pm_nl_set_limits $ns1 1 1
+-              pm_nl_set_limits $ns2 1 1
++              pm_nl_set_limits $ns1 0 2
++              pm_nl_set_limits $ns2 0 2
+               pm_nl_add_endpoint $ns2 10.0.2.2 id 2 dev ns2eth2 flags subflow
+               run_tests $ns1 $ns2 10.0.1.1 4 0 0 speed_20 2>/dev/null &
+@@ -3277,10 +3278,24 @@ endpoint_tests()
+               sleep 0.5
+               chk_subflow_nr needtitle "after delete" 1
+-              pm_nl_add_endpoint $ns2 10.0.2.2 dev ns2eth2 flags subflow
++              pm_nl_add_endpoint $ns2 10.0.2.2 id 2 dev ns2eth2 flags subflow
+               wait_mpj $ns2
+               chk_subflow_nr "" "after re-add" 2
++
++              pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
++              wait_attempt_fail $ns2
++              chk_subflow_nr "" "after new reject" 2
++
++              ip netns exec "${ns2}" ${iptables} -D OUTPUT -s "10.0.3.2" -p tcp -j REJECT
++              pm_nl_del_endpoint $ns2 3 10.0.3.2
++              pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
++              wait_mpj $ns2
++              chk_subflow_nr "" "after no reject" 3
++
+               kill_tests_wait
++
++              chk_join_nr 3 3 3
++              chk_rm_nr 1 1
+       fi
+       # remove and re-add
diff --git a/queue-6.1/selftests-mptcp-join-check-re-using-id-of-unused-add_addr.patch b/queue-6.1/selftests-mptcp-join-check-re-using-id-of-unused-add_addr.patch
new file mode 100644 (file)
index 0000000..6d0c9fd
--- /dev/null
@@ -0,0 +1,87 @@
+From stable+bounces-73011-greg=kroah.com@vger.kernel.org Wed Sep  4 13:07:31 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 13:07:06 +0200
+Subject: selftests: mptcp: join: check re-using ID of unused ADD_ADDR
+To: stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: MPTCP Upstream <mptcp@lists.linux.dev>, "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, Mat Martineau <martineau@kernel.org>, Jakub Kicinski <kuba@kernel.org>
+Message-ID: <20240904110705.4087459-2-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit a13d5aad4dd9a309eecdc33cfd75045bd5f376a3 upstream.
+
+This test extends "delete re-add signal" to validate the previous
+commit. An extra address is announced by the server, but this address
+cannot be used by the client. The result is that no subflow will be
+established to this address.
+
+Later, the server will delete this extra endpoint, and set a new one,
+with a valid address, but re-using the same ID. Before the previous
+commit, the server would not have been able to announce this new
+address.
+
+While at it, extra checks have been added to validate the expected
+numbers of MPJ, ADD_ADDR and RM_ADDR.
+
+The 'Fixes' tag here below is the same as the one from the previous
+commit: this patch here is not fixing anything wrong in the selftests,
+but it validates the previous fix for an issue introduced by this commit
+ID.
+
+Fixes: b6c08380860b ("mptcp: remove addr and subflow in PM netlink")
+Cc: stable@vger.kernel.org
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20240819-net-mptcp-pm-reusing-id-v1-2-38035d40de5b@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+[ Conflicts in mptcp_join.sh, because the helpers are different in this
+  version:
+  - run_tests has been modified a few times to reduce the number of
+    positional parameters
+  - no chk_mptcp_info helper
+  - chk_subflow_nr taking an extra parameter
+  - kill_tests_wait instead of mptcp_lib_kill_wait ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ tools/testing/selftests/net/mptcp/mptcp_join.sh |   16 ++++++++++++----
+ 1 file changed, 12 insertions(+), 4 deletions(-)
+
+--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
++++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
+@@ -3243,9 +3243,11 @@ userspace_tests()
+       # remove and re-add
+       if reset "delete re-add signal" &&
+          mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
+-              pm_nl_set_limits $ns1 1 1
+-              pm_nl_set_limits $ns2 1 1
++              pm_nl_set_limits $ns1 0 2
++              pm_nl_set_limits $ns2 2 2
+               pm_nl_add_endpoint $ns1 10.0.2.1 id 1 flags signal
++              # broadcast IP: no packet for this address will be received on ns1
++              pm_nl_add_endpoint $ns1 224.0.0.1 id 2 flags signal
+               run_tests $ns1 $ns2 10.0.1.1 4 0 0 speed_20 2>/dev/null &
+               local tests_pid=$!
+@@ -3253,13 +3255,19 @@ userspace_tests()
+               chk_subflow_nr needtitle "before delete" 2
+               pm_nl_del_endpoint $ns1 1 10.0.2.1
++              pm_nl_del_endpoint $ns1 2 224.0.0.1
+               sleep 0.5
+               chk_subflow_nr "" "after delete" 1
+-              pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
++              pm_nl_add_endpoint $ns1 10.0.2.1 id 1 flags signal
++              pm_nl_add_endpoint $ns1 10.0.3.1 id 2 flags signal
+               wait_mpj $ns2
+-              chk_subflow_nr "" "after re-add" 2
++              chk_subflow_nr "" "after re-add" 3
+               kill_tests_wait
++
++              chk_join_nr 3 3 3
++              chk_add_nr 4 4
++              chk_rm_nr 2 1 invert
+       fi
+ }
diff --git a/queue-6.1/selftests-mptcp-join-test-for-flush-re-add-endpoints.patch b/queue-6.1/selftests-mptcp-join-test-for-flush-re-add-endpoints.patch
new file mode 100644 (file)
index 0000000..579e3f5
--- /dev/null
@@ -0,0 +1,80 @@
+From stable+bounces-73010-greg=kroah.com@vger.kernel.org Wed Sep  4 13:06:39 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 13:06:13 +0200
+Subject: selftests: mptcp: join: test for flush/re-add endpoints
+To: stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: MPTCP Upstream <mptcp@lists.linux.dev>, "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, Mat Martineau <martineau@kernel.org>, Jakub Kicinski <kuba@kernel.org>
+Message-ID: <20240904110611.4086328-4-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit e06959e9eebdfea4654390f53b65cff57691872e upstream.
+
+After having flushed endpoints that didn't cause the creation of new
+subflows, it is important to check endpoints can be re-created, re-using
+previously used IDs.
+
+Before the previous commit, the client would not have been able to
+re-create the subflow that was previously rejected.
+
+The 'Fixes' tag here below is the same as the one from the previous
+commit: this patch here is not fixing anything wrong in the selftests,
+but it validates the previous fix for an issue introduced by this commit
+ID.
+
+Fixes: 06faa2271034 ("mptcp: remove multi addresses and subflows in PM")
+Cc: stable@vger.kernel.org
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20240819-net-mptcp-pm-reusing-id-v1-6-38035d40de5b@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+[ No conflicts, but adapt the test to the helpers in this version:
+  - run_tests has been modified a few times to reduce the number of
+    positional parameters
+  - no chk_mptcp_info helper
+  - chk_subflow_nr taking an extra parameter
+  - kill_tests_wait instead of mptcp_lib_kill_wait ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ tools/testing/selftests/net/mptcp/mptcp_join.sh |   29 ++++++++++++++++++++++++
+ 1 file changed, 29 insertions(+)
+
+--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
++++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
+@@ -3368,6 +3368,35 @@ endpoint_tests()
+               chk_rm_nr 3 2 invert
+       fi
++      # flush and re-add
++      if reset_with_tcp_filter "flush re-add" ns2 10.0.3.2 REJECT OUTPUT &&
++         mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
++              pm_nl_set_limits $ns1 0 2
++              pm_nl_set_limits $ns2 1 2
++              # broadcast IP: no packet for this address will be received on ns1
++              pm_nl_add_endpoint $ns1 224.0.0.1 id 2 flags signal
++              pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
++              run_tests $ns1 $ns2 10.0.1.1 4 0 0 speed_20 2>/dev/null &
++              local tests_pid=$!
++
++              wait_attempt_fail $ns2
++              chk_subflow_nr needtitle "before flush" 1
++
++              pm_nl_flush_endpoint $ns2
++              pm_nl_flush_endpoint $ns1
++              wait_rm_addr $ns2 0
++              ip netns exec "${ns2}" ${iptables} -D OUTPUT -s "10.0.3.2" -p tcp -j REJECT
++              pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
++              wait_mpj $ns2
++              pm_nl_add_endpoint $ns1 10.0.3.1 id 2 flags signal
++              wait_mpj $ns2
++              kill_wait "${tests_pid}"
++              kill_tests_wait
++
++              chk_join_nr 2 2 2
++              chk_add_nr 2 2
++              chk_rm_nr 1 0 invert
++      fi
+ }
+ # [$1: error message]
diff --git a/queue-6.1/selftests-mptcp-join-validate-fullmesh-endp-on-1st-sf.patch b/queue-6.1/selftests-mptcp-join-validate-fullmesh-endp-on-1st-sf.patch
new file mode 100644 (file)
index 0000000..66f598c
--- /dev/null
@@ -0,0 +1,48 @@
+From stable+bounces-73007-greg=kroah.com@vger.kernel.org Wed Sep  4 13:04:50 2024
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+Date: Wed,  4 Sep 2024 13:04:31 +0200
+Subject: selftests: mptcp: join: validate fullmesh endp on 1st sf
+To: stable@vger.kernel.org, gregkh@linuxfoundation.org
+Cc: MPTCP Upstream <mptcp@lists.linux.dev>, "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, Mat Martineau <martineau@kernel.org>, Jakub Kicinski <kuba@kernel.org>
+Message-ID: <20240904110430.4084188-2-matttbe@kernel.org>
+
+From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
+
+commit 4878f9f8421f4587bee7b232c1c8a9d3a7d4d782 upstream.
+
+This case was not covered, and the wrong ID was set before the previous
+commit.
+
+The rest is not modified, it is just that it will increase the code
+coverage.
+
+The right address ID can be verified by looking at the packet traces. We
+could automate that using Netfilter with some cBPF code for example, but
+that's always a bit cryptic. Packetdrill seems better fitted for that.
+
+Fixes: 4f49d63352da ("selftests: mptcp: add fullmesh testcases")
+Cc: stable@vger.kernel.org
+Reviewed-by: Mat Martineau <martineau@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://patch.msgid.link/20240819-net-mptcp-pm-reusing-id-v1-13-38035d40de5b@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+[ Conflicts in mptcp_join.sh, because the 'run_tests' helper has been
+  modified in multiple commits that are not in this version, e.g. commit
+  e571fb09c893 ("selftests: mptcp: add speed env var"). The conflict was
+  in the context, the new line can still be added at the same place. ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ tools/testing/selftests/net/mptcp/mptcp_join.sh |    1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
++++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
+@@ -3023,6 +3023,7 @@ fullmesh_tests()
+               pm_nl_set_limits $ns1 1 3
+               pm_nl_set_limits $ns2 1 3
+               pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
++              pm_nl_add_endpoint $ns2 10.0.1.2 flags subflow,fullmesh
+               run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_1 slow
+               chk_join_nr 3 3 3
+               chk_add_nr 1 1
index 22b0633751ec0831248c91ac87ac5f3039ce1304..464eb84bddfa5073b434e95499840e2e459ea5fb 100644 (file)
@@ -13,3 +13,14 @@ selftests-mptcp-join-check-re-using-id-of-unused-add.patch
 selftests-mptcp-join-check-re-adding-init-endp-with-.patch
 pci-msi-fix-uaf-in-msi_capability_init.patch
 f2fs-fix-to-truncate-preallocated-blocks-in-f2fs_file_open.patch
+mptcp-pm-fullmesh-select-the-right-id-later.patch
+mptcp-pm-avoid-possible-uaf-when-selecting-endp.patch
+mptcp-pm-reuse-id-0-after-delete-and-re-add.patch
+mptcp-pm-fix-id-0-endp-usage-after-multiple-re-creations.patch
+selftests-mptcp-join-validate-fullmesh-endp-on-1st-sf.patch
+selftests-mptcp-join-check-re-using-id-of-closed-subflow.patch
+selftests-mptcp-add-explicit-test-case-for-remove-readd.patch
+selftests-mptcp-join-test-for-flush-re-add-endpoints.patch
+selftests-mptcp-join-check-re-using-id-of-unused-add_addr.patch
+selftests-mptcp-join-check-re-adding-init-endp-with-id.patch
+mptcp-pr_debug-add-missing-n-at-the-end.patch