Re: [PATCH v2] hysdn: fix to a race condition in put_log_buffer

From: David Miller
Date: Mon Aug 07 2017 - 14:25:49 EST

From: Anton Volkov <avolkov@xxxxxxxxx>
Date: Mon, 7 Aug 2017 15:54:14 +0300

> The synchronization type that was used earlier to guard the loop that
> deletes unused log buffers may lead to a situation that prevents any
> thread from going through the loop.
> The patch deletes previously used synchronization mechanism and moves
> the loop under the spin_lock so the similar cases won't be feasible in
> the future.
> Found by by Linux Driver Verification project (
> Signed-off-by: Anton Volkov <avolkov@xxxxxxxxx>
> ---
> v2: Fixed coding style issues