diff options
Diffstat (limited to 'net/mptcp/options.c')
| -rw-r--r-- | net/mptcp/options.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c index d1b4c5d208a9..1ca60d9da3ef 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -802,7 +802,12 @@ static bool check_fully_established(struct mptcp_sock *msk, struct sock *ssk, mptcp_subflow_fully_established(subflow, mp_opt); fully_established: - if (likely(subflow->pm_notified)) + /* if the subflow is not already linked into the conn_list, we can't + * notify the PM: this subflow is still on the listener queue + * and the PM possibly acquiring the subflow lock could race with + * the listener close + */ + if (likely(subflow->pm_notified) || list_empty(&subflow->node)) return true; subflow->pm_notified = 1; |