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Diffstat (limited to 'net/mptcp/pm_netlink.c')
-rw-r--r--net/mptcp/pm_netlink.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 5ff93b73f33d..ca86c88f89e0 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -728,11 +728,13 @@ static int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk,
mptcp_for_each_subflow(msk, subflow) {
struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
struct mptcp_addr_info local;
+ bool slow;
local_address((struct sock_common *)ssk, &local);
if (!mptcp_addresses_equal(&local, addr, addr->port))
continue;
+ slow = lock_sock_fast(ssk);
if (subflow->backup != bkup)
msk->last_snd = NULL;
subflow->backup = bkup;
@@ -740,7 +742,8 @@ static int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk,
subflow->request_bkup = bkup;
pr_debug("send ack for mp_prio");
- mptcp_subflow_send_ack(ssk);
+ __mptcp_subflow_send_ack(ssk);
+ unlock_sock_fast(ssk, slow);
return 0;
}