drbd: Do not segfault if a sync dependency reaches a diskless device

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
git-mirror · Nov 8, 2012 · 438c837 · 438c837
1 parent 778bcf2
commit 438c837
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
@@ -1319,6 +1319,8 @@ static int _drbd_may_sync_now(struct drbd_conf *mdev)
 	struct drbd_conf *odev = mdev;
 
 	while (1) {
+		if (!odev->ldev)
+			return 1;
 		if (odev->ldev->dc.resync_after == -1)
 			return 1;
 		odev = minor_to_mdev(odev->ldev->dc.resync_after);