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| author | Chen Zhongjin <chenzhongjin@huawei.com> | 2022-11-29 17:25:56 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-14 11:32:01 +0100 |
| commit | e7b950458156d410509a08c41930b75e72985938 (patch) | |
| tree | 725395a173679b1e3ecc3dfcd1f5a488c0db11f2 | |
| parent | 1717354d77f82c733ff5e828b897f3b1a7053d6d (diff) | |
| download | linux-stable-e7b950458156d410509a08c41930b75e72985938.tar.gz linux-stable-e7b950458156d410509a08c41930b75e72985938.tar.bz2 linux-stable-e7b950458156d410509a08c41930b75e72985938.zip | |
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>
| -rw-r--r-- | net/bluetooth/af_bluetooth.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c index 4ef6a54403aa..2f87f57e7a4f 100644 --- a/net/bluetooth/af_bluetooth.c +++ b/net/bluetooth/af_bluetooth.c @@ -736,7 +736,7 @@ static int __init bt_init(void) err = bt_sysfs_init(); if (err < 0) - return err; + goto cleanup_led; err = sock_register(&bt_sock_family_ops); if (err) @@ -772,6 +772,8 @@ unregister_socket: sock_unregister(PF_BLUETOOTH); cleanup_sysfs: bt_sysfs_cleanup(); +cleanup_led: + bt_leds_cleanup(); return err; } |