From 475639551f1f00d764786bdf806c2df4595be844 Mon Sep 17 00:00:00 2001 From: Geliang Tang Date: Fri, 3 Nov 2023 20:31:58 +0800 Subject: [PATCH] mptcp: add validity check for sending RM_ADDR This patch adds the validity check for sending RM_ADDRs for userspace PM in mptcp_pm_remove_addrs(), only send a RM_ADDR when the address is in the anno_list or conn_list. Fixes: 8b1c94da1e48 ("mptcp: only send RM_ADDR in nl_cmd_remove") Signed-off-by: Geliang Tang --- net/mptcp/pm_netlink.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 1529ec35881552..bf4d96f6f99a6e 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1515,8 +1515,9 @@ void mptcp_pm_remove_addrs(struct mptcp_sock *msk, struct list_head *rm_list) struct mptcp_pm_addr_entry *entry; list_for_each_entry(entry, rm_list, list) { - remove_anno_list_by_saddr(msk, &entry->addr); - if (alist.nr < MPTCP_RM_IDS_MAX) + if ((remove_anno_list_by_saddr(msk, &entry->addr) || + lookup_subflow_by_saddr(&msk->conn_list, &entry->addr)) && + alist.nr < MPTCP_RM_IDS_MAX) alist.ids[alist.nr++] = entry->addr.id; }