The patch below does not apply to the 6.5-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.5.y git checkout FETCH_HEAD git cherry-pick -x b134a5805455d1886662a6516c965cdb9df9fbcc # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023102034-patience-flaring-b32f@gregkh' --subject-prefix 'PATCH 6.5.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b134a5805455d1886662a6516c965cdb9df9fbcc Mon Sep 17 00:00:00 2001 From: Matthieu Baerts matttbe@kernel.org Date: Wed, 18 Oct 2023 11:23:52 -0700 Subject: [PATCH] selftests: mptcp: join: correctly check for no RST

The commit mentioned below was more tolerant with the number of RST seen during a test because in some uncontrollable situations, multiple RST can be generated.

But it was not taking into account the case where no RST are expected: this validation was then no longer reporting issues for the 0 RST case because it is not possible to have less than 0 RST in the counter. This patch fixes the issue by adding a specific condition.

Fixes: 6bf41020b72b ("selftests: mptcp: update and extend fastclose test-cases") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau martineau@kernel.org Signed-off-by: Matthieu Baerts matttbe@kernel.org Signed-off-by: Mat Martineau martineau@kernel.org Link: https://lore.kernel.org/r/20231018-send-net-20231018-v1-1-17ecb002e41d@kerne... Signed-off-by: Jakub Kicinski kuba@kernel.org

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh index ee1f89a872b3..27953670206e 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -1432,7 +1432,9 @@ chk_rst_nr() count=$(get_counter ${ns_tx} "MPTcpExtMPRstTx") if [ -z "$count" ]; then print_skip - elif [ $count -lt $rst_tx ]; then + # accept more rst than expected except if we don't expect any + elif { [ $rst_tx -ne 0 ] && [ $count -lt $rst_tx ]; } || + { [ $rst_tx -eq 0 ] && [ $count -ne 0 ]; }; then fail_test "got $count MP_RST[s] TX expected $rst_tx" else print_ok @@ -1442,7 +1444,9 @@ chk_rst_nr() count=$(get_counter ${ns_rx} "MPTcpExtMPRstRx") if [ -z "$count" ]; then print_skip - elif [ "$count" -lt "$rst_rx" ]; then + # accept more rst than expected except if we don't expect any + elif { [ $rst_rx -ne 0 ] && [ $count -lt $rst_rx ]; } || + { [ $rst_rx -eq 0 ] && [ $count -ne 0 ]; }; then fail_test "got $count MP_RST[s] RX expected $rst_rx" else print_ok