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-rw-r--r--net/bluetooth/l2cap_sock.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index d938311c5..1c6d01a27 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -1414,6 +1414,14 @@ static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan,
if (!skb)
return ERR_PTR(err);
+ /* Channel lock is released before requesting new skb and then
+ * reacquired thus we need to recheck channel state.
+ */
+ if (chan->state != BT_CONNECTED) {
+ kfree_skb(skb);
+ return ERR_PTR(-ENOTCONN);
+ }
+
skb->priority = sk->sk_priority;
bt_cb(skb)->l2cap.chan = chan;