1 files changed, 6 insertions, 0 deletions

diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c
index 9645389a1187..43e488f5d063 100644
--- a/fs/btrfs/tree-checker.c
+++ b/fs/btrfs/tree-checker.c
@@ -1325,6 +1325,12 @@ static int check_leaf(struct extent_buffer *leaf, bool check_item_data)
                                     owner);
                         return -EUCLEAN;
                 }
+                /* Unknown tree */
+                if (owner == 0) {
+                        generic_err(leaf, 0,
+                                "invalid owner, root 0 is not defined");
+                        return -EUCLEAN;
+                }
                 return 0;
         }