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

[Dinghao Liu]

There is one error handling path does not free ref,
which may cause a memory leak.

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..78693d3dd15b 100644
--- a/fs/btrfs/ref-verify.c
+++ b/fs/btrfs/ref-verify.c
@@ -860,6 +860,7 @@ int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
 "dropping a ref for a root that doesn't have a ref on the block");
                        dump_block_entry(fs_info, be);
                        dump_ref_action(fs_info, ra);
+                       kfree(ref);
                        kfree(ra);
                        goto out_unlock;
                }
-- 
2.17.1