Alexander Aring e07ea4e862 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 13:15:37 +02:00
..
2020-01-29 10:24:34 +01:00
2019-08-06 18:29:38 +02:00
2022-08-25 11:09:24 +02:00
2019-03-13 14:04:52 -07:00
2018-12-21 14:11:31 +01:00
2018-02-17 13:21:15 +01:00
2021-12-14 10:04:48 +01:00
2017-06-14 15:06:01 +02:00