ERROR: lremovexattr security.selinux failed: Permission denied

Any Idea why I'm getting this?

```
Creating backup: /mnt/HDDs/backups/snapshots/desktop/root.20170630T0901
35MiB 0:00:13 [ 2,6MiB/s] [ 2,6MiB/s]
WARNING: [send/receive] (send=/mnt/FS_TREE/snapshots/root.20170630T0901, receive=/mnt/HDDs/backups/snapshots/desktop) At subvol /mnt/FS_TREE/snapshots/root.20170630T0901
ERROR: lremovexattr home/rbenedetti/.config/vivaldi/Default/IndexedDB/https_www.netflix.com_0.indexeddb.leveldb/000397.log security.selinux failed: Permission denied
WARNING: [send/receive] (send=/mnt/FS_TREE/snapshots/root.20170630T0901, receive=/mnt/HDDs/backups/snapshots/desktop) At snapshot root.20170630T0901
ERROR: Failed to send/receive btrfs subvolume: /mnt/FS_TREE/snapshots/root.20170630T0901 [/mnt/FS_TREE/snapshots/root.20170630T0001] -> /mnt/HDDs/backups/snapshots/desktop
WARNING: Deleted partially received (garbled) subvolume: /mnt/HDDs/backups/snapshots/desktop/root.20170630T0901
ERROR: Error while resuming backups, aborting

```

I'm pretty lost (near nothing on google about btrbk/btrfs/send-receive + SELinux) but by what I understand btrbk is not SELinux aware and this is giving problems?