dm-integrity: fix a warning on invalid table line

commit 0a533c3e4246c29d502a7e0fba0e86d80a906b04 upstream.

If we use the 'B' mode and we have an invalit table line,
cancel_delayed_work_sync would trigger a warning. This commit avoids the
warning.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index eb2b44f4a61f08963f074d3420b346578a511ff2..1e27a5bce2d9421028009465dc588de7eab7a04e 100644 (file)
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -4687,7 +4687,7 @@ static void dm_integrity_dtr(struct dm_target *ti)
        BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));
        BUG_ON(!list_empty(&ic->wait_list));
 
-       if (ic->mode == 'B')
+       if (ic->mode == 'B' && ic->bitmap_flush_work.work.func)
                cancel_delayed_work_sync(&ic->bitmap_flush_work);
        if (ic->metadata_wq)
                destroy_workqueue(ic->metadata_wq);