diff options
| author | Anatol Pomozov <anatol.pomozov@gmail.com> | 2014-07-30 15:57:03 -0700 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2014-12-01 15:46:31 +0000 |
| commit | a7b256527e348c69530cabfcb2031d9fd74e4586 (patch) | |
| tree | 0816bee04eb083bbdc182b1a2615478388b45427 /drivers/bluetooth | |
| parent | a25f0c0e5ba0c5e924b3c85c4f1cdc9b4deabe51 (diff) | |
Bluetooth: Fix crash in the Marvell driver initialization codepath
commit 8500d791c458ccbbb3e2d3fa9a0320ffd5729069 upstream.
btmrvl_add_card() function calls kthread_run that might return error
(e.g. if current thread is killed). If one tries to use the error
value as a pointer then invalid memory access oops happens.
Check kthread_run() return value, if it is an error then release resources
correctly.
TEST=boot computer with BT modules enabled. I see the error message that
BT device initialization failed. Now kernel does not crash. Hint: to enable
BT run 'rmmod btmrvl_sdio; modprobe btmrvl_sdio'
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btmrvl_main.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c index 3ecba5c979bd..ae0b48471ffc 100644 --- a/drivers/bluetooth/btmrvl_main.c +++ b/drivers/bluetooth/btmrvl_main.c @@ -667,12 +667,17 @@ struct btmrvl_private *btmrvl_add_card(void *card) init_waitqueue_head(&priv->main_thread.wait_q); priv->main_thread.task = kthread_run(btmrvl_service_main_thread, &priv->main_thread, "btmrvl_main_service"); + if (IS_ERR(priv->main_thread.task)) + goto err_thread; priv->btmrvl_dev.card = card; priv->btmrvl_dev.tx_dnld_rdy = true; return priv; +err_thread: + btmrvl_free_adapter(priv); + err_adapter: kfree(priv); |