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 ffae04983b0aa6529f14b9c04a1fd8cab38cfff2..e9d553eea9cd4bfc55dd6961f5fe1ca847ee4e7d 100644 (file)
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -4543,7 +4543,7 @@ 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);