--- /dev/null
+From 40061817d95bce6dd5634a61a65cd5922e6ccc92 Mon Sep 17 00:00:00 2001
+From: Geliang Tang <tanggeliang@kylinos.cn>
+Date: Fri, 29 Mar 2024 13:08:53 +0100
+Subject: selftests: mptcp: join: fix dev in check_endpoint
+
+From: Geliang Tang <tanggeliang@kylinos.cn>
+
+commit 40061817d95bce6dd5634a61a65cd5922e6ccc92 upstream.
+
+There's a bug in pm_nl_check_endpoint(), 'dev' didn't be parsed correctly.
+If calling it in the 2nd test of endpoint_tests() too, it fails with an
+error like this:
+
+ creation [FAIL] expected '10.0.2.2 id 2 subflow dev dev' \
+ found '10.0.2.2 id 2 subflow dev ns2eth2'
+
+The reason is '$2' should be set to 'dev', not '$1'. This patch fixes it.
+
+Fixes: 69c6ce7b6eca ("selftests: mptcp: add implicit endpoint test case")
+Cc: stable@vger.kernel.org
+Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
+Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Link: https://lore.kernel.org/r/20240329-upstream-net-20240329-fallback-mib-v1-2-324a8981da48@kernel.org
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+[ Conflicts in mptcp_join.sh: only the fix has been added, not the
+ verification because this modified subtest is quite different in
+ v6.1: to add this verification, we would need to change a bit the
+ subtest: pm_nl_check_endpoint() takes an extra argument for the
+ title, the next chk_subflow_nr() will no longer need the title, etc.
+ Easier with only the fix without the extra test. ]
+Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+Notes:
+---
+ tools/testing/selftests/net/mptcp/mptcp_join.sh | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
++++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
+@@ -725,7 +725,7 @@ pm_nl_check_endpoint()
+ [ -n "$_flags" ]; flags="flags $_flags"
+ shift
+ elif [ $1 = "dev" ]; then
+- [ -n "$2" ]; dev="dev $1"
++ [ -n "$2" ]; dev="dev $2"
+ shift
+ elif [ $1 = "id" ]; then
+ _id=$2