dm-integrity: fix a warning on invalid table line

JIRA: https://issues.redhat.com/browse/RHEL-92762
Upstream Status: kernel/git/torvalds/linux.git

commit 0a533c3
Author: Mikulas Patocka <mpatocka@redhat.com>
Date:   Tue Apr 22 21:18:33 2025 +0200

    dm-integrity: fix a warning on invalid table line

    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: Benjamin Marzinski <bmarzins@redhat.com>

Author: bmarzins

drivers/md/dm-integrity.c

@@ -5176,7 +5176,7 @@ 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);