[PATCH] btrfs: ref-verify: Fix memleak in add_extent_data_ref

[Dinghao Liu]

When lookup_root_entry() fails, ref should be freed
just like when insert_ref_entry() fails.

Signed-off-by: Dinghao Liu <dinghao....@zju.edu.cn>
---
 fs/btrfs/ref-verify.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/btrfs/ref-verify.c b/fs/btrfs/ref-verify.c
index 7f03dbe5b609..712f5cfde404 100644
--- a/fs/btrfs/ref-verify.c
+++ b/fs/btrfs/ref-verify.c
@@ -419,6 +419,7 @@ static int add_extent_data_ref(struct btrfs_fs_info 
*fs_info,
        if (!re) {
                spin_unlock(&fs_info->ref_verify_lock);
                btrfs_err(fs_info, "missing root in new block entry?");
+               kfree(ref);
                return -EINVAL;
        }
        re->num_refs += num_refs;
-- 
2.17.1