diff options
Diffstat (limited to 'net/mptcp/pm.c')
| -rw-r--r-- | net/mptcp/pm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 9256bd5d02ed..da2ed576f289 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -126,8 +126,14 @@ void mptcp_pm_fully_established(struct mptcp_sock *msk) spin_lock_bh(&pm->lock); - if (READ_ONCE(pm->work_pending)) + /* mptcp_pm_fully_established() can be invoked by multiple + * racing paths - accept() and check_fully_established() + * be sure to serve this event only once. + */ + if (READ_ONCE(pm->work_pending) && + !(msk->pm.status & BIT(MPTCP_PM_ALREADY_ESTABLISHED))) mptcp_pm_schedule_work(msk, MPTCP_PM_ESTABLISHED); + msk->pm.status |= BIT(MPTCP_PM_ALREADY_ESTABLISHED); spin_unlock_bh(&pm->lock); } |