fs: dlm: fix race between test_bit() and queue_work()

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commit eef6ec9bf3 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>

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Alexander Aring 2022-08-15 15:43:14 -04:00 • committed by Greg Kroah-Hartman

parent 7fa5304c4b

commit 34ed22dd28

1 changed files with 4 additions and 2 deletions

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fs/dlm/ast.c

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