Re: [PATCH 2/4] Bluetooth: hci_h5: fix a race in the closing path

From: Marcel Holtmann
Date: Tue Aug 30 2016 - 12:54:39 EST


Hi Boris,

> The H5 timer should not be rescheduled while we are closing the device,
> otherwise it's defeating the del_timer_sync() call done in h5_close().
>
> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/bluetooth/hci_h5.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
> index 0879d64b1caf..d9720c59cffa 100644
> --- a/drivers/bluetooth/hci_h5.c
> +++ b/drivers/bluetooth/hci_h5.c
> @@ -140,7 +140,12 @@ static void h5_timed_event(unsigned long arg)
> }
>
> if (h5->state != H5_ACTIVE) {
> - mod_timer(&h5->timer, jiffies + H5_SYNC_TIMEOUT);
> + /*
> + * Do not re-schedule the timer if the device is being closed.
> + */

same here as the other patch. Use network subsystem comment style.

Regards

Marcel