1 files changed, 10 insertions, 0 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 99dfd889b9f7..044981cf6df9 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -417,6 +417,16 @@ int btrfs_verify_level_key(struct extent_buffer *eb, int level,
          */
         if (btrfs_header_generation(eb) > fs_info->last_trans_committed)
                 return 0;
+
+        /* We have @first_key, so this @eb must have at least one item */
+        if (btrfs_header_nritems(eb) == 0) {
+                btrfs_err(fs_info,
+                "invalid tree nritems, bytenr=%llu nritems=0 expect >0",
+                          eb->start);
+                WARN_ON(IS_ENABLED(CONFIG_BTRFS_DEBUG));
+                return -EUCLEAN;
+        }
+
         if (found_level)
                 btrfs_node_key_to_cpu(eb, &found_key, 0);
         else