diff options
| -rw-r--r-- | fs/btrfs/volumes.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 6ca0d9cc46f9..6104676857f5 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -555,12 +555,14 @@ static struct btrfs_fs_devices *clone_fs_devices(struct btrfs_fs_devices *orig) * This is ok to do without rcu read locked because we hold the * uuid mutex so nothing we touch in here is going to disappear. */ - name = rcu_string_strdup(orig_dev->name->str, GFP_NOFS); - if (!name) { - kfree(device); - goto error; + if (orig_dev->name) { + name = rcu_string_strdup(orig_dev->name->str, GFP_NOFS); + if (!name) { + kfree(device); + goto error; + } + rcu_assign_pointer(device->name, name); } - rcu_assign_pointer(device->name, name); list_add(&device->dev_list, &fs_devices->devices); device->fs_devices = fs_devices; |