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>
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index cbbc5c7..c3d1f5f 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -1319,6 +1319,8 @@
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);