Chen Zhongjin edf7284a98 Bluetooth: Fix not cleanup led when bt_init fails
[ Upstream commit 2f3957c7eb4e07df944169a3e50a4d6790e1c744 ]

bt_init() calls bt_leds_init() to register led, but if it fails later,
bt_leds_cleanup() is not called to unregister it.

This can cause panic if the argument "bluetooth-power" in text is freed
and then another led_trigger_register() tries to access it:

BUG: unable to handle page fault for address: ffffffffc06d3bc0
RIP: 0010:strcmp+0xc/0x30
  Call Trace:
    <TASK>
    led_trigger_register+0x10d/0x4f0
    led_trigger_register_simple+0x7d/0x100
    bt_init+0x39/0xf7 [bluetooth]
    do_one_initcall+0xd0/0x4e0

Fixes: e64c97b53bc6 ("Bluetooth: Add combined LED trigger for controller power")
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-14 11:37:24 +01:00
..
2022-11-03 23:59:12 +09:00
2022-10-26 12:34:40 +02:00
2021-07-29 15:06:49 +01:00
2021-07-29 15:06:49 +01:00