Bluetooth: Add paranoid check for existing LE and BR/EDR SMP channels
When the SMP channels have been already registered, then print out a
clear WARN_ON message that something went wrong. Also unregister the
existing channels in this case before trying to register new ones.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 08a9314..37d9180 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -3072,6 +3072,12 @@
if (!lmp_le_capable(hdev))
return 0;
+ if (WARN_ON(hdev->smp_data)) {
+ chan = hdev->smp_data;
+ hdev->smp_data = NULL;
+ smp_del_chan(chan);
+ }
+
chan = smp_add_cid(hdev, L2CAP_CID_SMP);
if (IS_ERR(chan))
return PTR_ERR(chan);
@@ -3091,6 +3097,12 @@
return 0;
}
+ if (WARN_ON(hdev->smp_bredr_data)) {
+ chan = hdev->smp_bredr_data;
+ hdev->smp_bredr_data = NULL;
+ smp_del_chan(chan);
+ }
+
chan = smp_add_cid(hdev, L2CAP_CID_SMP_BREDR);
if (IS_ERR(chan)) {
int err = PTR_ERR(chan);