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| author | Anatol Pomozov <anatol.pomozov@gmail.com> | 2014-07-31 02:57:03 +0400 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2014-07-31 03:07:28 +0400 |
| commit | 8500d791c458ccbbb3e2d3fa9a0320ffd5729069 (patch) | |
| tree | 281f1d7bb7e6562dfe3ffd68d56ff83531dd4507 /drivers/bluetooth | |
| parent | 82c295b1b07595d21e9931c58f08ccd9fa151de0 (diff) | |
| download | linux-8500d791c458ccbbb3e2d3fa9a0320ffd5729069.tar.xz | |
Bluetooth: Fix crash in the Marvell driver initialization codepath
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>
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 bae8e6a0ecf6..1d7db2064889 100644 --- a/drivers/bluetooth/btmrvl_main.c +++ b/drivers/bluetooth/btmrvl_main.c @@ -710,12 +710,17 @@ 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); |