drbd: Do not Oops when C_STANDALONE when uuid gets generated

Got introduces with

commit 0c3f34516e8c5a1a0ba3585a7777d32bbbdf4ecb
Author: Philipp Reisner <philipp.reisner@linbit.com>
Date:   Mon May 17 16:10:43 2010 +0200

    drbd: Create new current UUID as late as possible

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index c144509011b8..7e057b074bbd 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1354,7 +1354,10 @@ static int w_new_current_uuid(struct drbd_conf *mdev, struct drbd_work *w, int c
 {
         if (get_ldev(mdev)) {
                 drbd_uuid_new_current(mdev);
-                drbd_send_uuids(mdev);
+                if (get_net_conf(mdev)) {
+                        drbd_send_uuids(mdev);
+                        put_net_conf(mdev);
+                }
                 drbd_md_sync(mdev);
                 put_ldev(mdev);
         }