Bluetooth: Free allocated ERTM SREJ list if init fails

If the ERTM SREJ list is properly allocated but the retransmit list
allocation fails, the SREJ list must be freed before returning from
l2cap_ertm_init.  l2cap_chan_del will not clean up the SREJ list
if l2cap_ertm_init returns a failure code.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 24f144b72a96a87ee5f8fdc2016f613f00615344..078bf805cd97b217f72bde760bda7a1c63a6ad89 100644 (file)
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -2381,7 +2381,11 @@ static inline int l2cap_ertm_init(struct l2cap_chan *chan)
        if (err < 0)
                return err;
 
-       return l2cap_seq_list_init(&chan->retrans_list, chan->remote_tx_win);
+       err = l2cap_seq_list_init(&chan->retrans_list, chan->remote_tx_win);
+       if (err < 0)
+               l2cap_seq_list_free(&chan->srej_list);
+
+       return err;
 }
 
 static inline __u8 l2cap_select_mode(__u8 mode, __u16 remote_feat_mask)