Alexander Aring 0b2d8e4db4 fs: dlm: fix race between test_bit() and queue_work()
commit eef6ec9bf390e836a6c4029f3620fe49528aa1fe upstream.

This patch fixes a race by using ls_cb_mutex around the bit
operations and conditional code blocks for LSFL_CB_DELAY.

The function dlm_callback_stop() expects to stop all callbacks and
flush all currently queued onces. The set_bit() is not enough because
there can still be queue_work() after the workqueue was flushed.
To avoid queue_work() after set_bit(), surround both by ls_cb_mutex.

Cc: stable@vger.kernel.org
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-10-26 13:25:08 +02:00
..
2020-10-16 11:11:22 -07:00
2021-09-18 13:40:15 +02:00
2020-09-10 14:03:31 -07:00
2022-06-09 10:21:16 +02:00
2020-10-23 11:33:41 -07:00
2020-10-23 11:33:41 -07:00