6.6-stable review patch. If anyone has any objections, please let me know.
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From: Geliang Tang geliang.tang@suse.com
commit 8df220b29282e8b450ea57be62e1eccd4996837c upstream.
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") Cc: stable@vger.kernel.org Signed-off-by: Geliang Tang geliang.tang@suse.com Reviewed-by: Mat Martineau martineau@kernel.org Signed-off-by: Matthieu Baerts matttbe@kernel.org Link: https://lore.kernel.org/r/20231114-upstream-net-20231113-mptcp-misc-fixes-6-... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/mptcp/pm_netlink.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1538,8 +1538,9 @@ void mptcp_pm_remove_addrs(struct mptcp_ 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; }