From 253cf30e8d3d001850a95c4729d668f916b037ab Mon Sep 17 00:00:00 2001 From: Max Chou Date: Tue, 21 Mar 2023 19:48:26 +0800 Subject: [PATCH] Bluetooth: btrtl: check for NULL in btrtl_set_quirks() The btrtl_set_quirks() has accessed btrtl_dev->ic_info->lmp_subver since b8e482d02513. However, if installing a Realtek Bluetooth controller without the driver supported, it will hit the NULL point accessed. Add a check for NULL to avoid the Kernel Oops. Signed-off-by: Max Chou Signed-off-by: Luiz Augusto von Dentz --- drivers/bluetooth/btrtl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index 8fa7733812adf..0f256a8abef42 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -905,6 +905,9 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev) break; } + if (!btrtl_dev->ic_info) + return; + switch (btrtl_dev->ic_info->lmp_subver) { case RTL_ROM_LMP_8703B: /* 8723CS reports two pages for local ext features, -- 2.30.2