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Diffstat (limited to 'fs/btrfs/volumes.c')
-rw-r--r--fs/btrfs/volumes.c12
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;