This is a note to let you know that I've just added the patch titled
Bluetooth: btrtl: check for NULL in btrtl_set_quirks()
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-btrtl-check-for-null-in-btrtl_set_quirks.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a6f36e35e162346f7978a4558f67f905c6361358
Author: Max Chou <max.chou@xxxxxxxxxxx>
Date: Tue Mar 21 19:48:26 2023 +0800
Bluetooth: btrtl: check for NULL in btrtl_set_quirks()
[ Upstream commit 253cf30e8d3d001850a95c4729d668f916b037ab ]
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@xxxxxxxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index 6b3755345427a..88f8c604d70a2 100644
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -882,6 +882,9 @@ 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,
