tree ae634920cf42835cad86baddf89b06be3662510a
parent ec2c6726322f0d270bab477e4904bf9496f70ee5
author Anton Volkov <avolkov@ispras.ru> 1502110454 +0300
committer David S. Miller <davem@davemloft.net> 1502130314 -0700

hysdn: fix to a race condition in put_log_buffer

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 (linuxtesting.org).

Signed-off-by: Anton Volkov <avolkov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>