[Drbd-dev] [PATCH 05/16] drbd: Do not segfault if a sync dependency reaches a diskless device

[Philipp Reisner]

Signed-off-by: Philipp Reisner <philipp.reisner at linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg at linbit.com>
---
 drivers/block/drbd/drbd_worker.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index ed12cdf..829a2ce 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -1321,6 +1321,8 @@ 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);
-- 
1.7.4.1