From 66b3f7425a9c5ebc2174539a55ba4ccf4cf1272c Mon Sep 17 00:00:00 2001 From: Pauli Virtanen Date: Thu, 1 Jun 2023 09:34:44 +0300 Subject: [PATCH] Bluetooth: ISO: don't try to remove CIG if there are bound CIS left [ Upstream commit 6c242c64a09e78349fb0a5f0a6f8076a3d7c0bb4 ] Consider existing BOUND & CONNECT state CIS to block CIG removal. Otherwise, under suitable timing conditions we may attempt to remove CIG while Create CIS is pending, which fails. Fixes: 26afbd826ee3 ("Bluetooth: Add initial implementation of CIS connections") Signed-off-by: Pauli Virtanen Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Sasha Levin --- net/bluetooth/hci_conn.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index c2c6dea..ab9f002 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -966,6 +966,8 @@ static void cis_cleanup(struct hci_conn *conn) /* Check if ISO connection is a CIS and remove CIG if there are * no other connections using it. */ + hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_BOUND, &d); + hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_CONNECT, &d); hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_CONNECTED, &d); if (d.count) return; -- 2.7.4