Messages in this thread Patch in this message | | | From | <> | Subject | [PATCH 1/1] Bluetooth: btrtl: check for NULL in btrtl_set_quirks() | Date | Tue, 21 Mar 2023 19:48:26 +0800 |
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From: Max Chou <max.chou@realtek.com>
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 <max.chou@realtek.com> --- drivers/bluetooth/btrtl.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index 8fa7733812ad..0f256a8abef4 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, -- 2.34.1
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