I used this patch to test:

---

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 7a5e347a42a3..822281bb3c5f 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -1235,6 +1235,8 @@ static void mptcp_pm_remove_addrs_and_subflows(struct mptcp_sock *msk,
                }
        }
 
+       alist.ids[alist.nr++] = 0;
+
        if (alist.nr) {
                spin_lock_bh(&msk->pm.lock);
                mptcp_pm_remove_addr(msk, alist);

---

apply: tag: export/20210218T061505
       move to next addr and testcases
       move to next addr when timeout

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/140

Geliang Tang (2):
  mptcp: unify RM_ADDR and RM_SUBFLOW receiving
  mptcp: remove id 0 address

 net/mptcp/pm_netlink.c | 97 ++++++++++++++++++++----------------------
 net/mptcp/protocol.c   |  2 +-
 net/mptcp/protocol.h   |  1 +
 3 files changed, 47 insertions(+), 53 deletions(-)

-- 
2.29.2