drbd: null dereference bug
authorDan Carpenter <error27@gmail.com>
Sat, 23 Jan 2010 12:45:22 +0000 (15:45 +0300)
committerPhilipp Reisner <philipp.reisner@linbit.com>
Mon, 25 Jan 2010 17:01:41 +0000 (18:01 +0100)
epoch is always NULL here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
drivers/block/drbd/drbd_receiver.c

index f22a5283128a2906e5ce5ee624d9fe3da414271c..d065c646b35a06fe9fba171864951efbe12e405d 100644 (file)
@@ -1224,7 +1224,7 @@ static int receive_Barrier(struct drbd_conf *mdev, struct p_header *h)
        epoch = kmalloc(sizeof(struct drbd_epoch), GFP_NOIO);
        if (!epoch) {
                dev_warn(DEV, "Allocation of an epoch failed, slowing down\n");
-               issue_flush = !test_and_set_bit(DE_BARRIER_IN_NEXT_EPOCH_ISSUED, &epoch->flags);
+               issue_flush = !test_and_set_bit(DE_BARRIER_IN_NEXT_EPOCH_ISSUED, &mdev->current_epoch->flags);
                drbd_wait_ee_list_empty(mdev, &mdev->active_ee);
                if (issue_flush) {
                        rv = drbd_flush_after_epoch(mdev, mdev->current_epoch);