From: Max Chou <max.chou@xxxxxxxxxxx>
If insert an USB dongle which chip is not maintained in ic_id_table, it
will hit the NULL point accessed. Add a null point check to avoid the
Kernel Oops.
Fixes: b39910bb54d9 ("Bluetooth: Populate hci_set_hw_info for Intel and Realtek")
Reviewed-by: Alex Lu <alex_lu@xxxxxxxxxxxxxx>
Signed-off-by: Max Chou <max.chou@xxxxxxxxxxx>
---
drivers/bluetooth/btrtl.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index 83025f457ca0..d3eba0d4a57d 100644
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -1351,12 +1351,14 @@ int btrtl_setup_realtek(struct hci_dev *hdev)
btrtl_set_quirks(hdev, btrtl_dev);
- hci_set_hw_info(hdev,
+ if (btrtl_dev->ic_info) {
+ hci_set_hw_info(hdev,
"RTL lmp_subver=%u hci_rev=%u hci_ver=%u hci_bus=%u",
btrtl_dev->ic_info->lmp_subver,
btrtl_dev->ic_info->hci_rev,
btrtl_dev->ic_info->hci_ver,
btrtl_dev->ic_info->hci_bus);
+ }
btrtl_free(btrtl_dev);
return ret;
--
2.43.0
