Btrfs: fix memory leak in btrfs_quota_enable()
We should free quota_root before returning from the error
handling code.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 5039686..fe9d02c 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -790,8 +790,10 @@
}
path = btrfs_alloc_path();
- if (!path)
- return -ENOMEM;
+ if (!path) {
+ ret = -ENOMEM;
+ goto out_free_root;
+ }
key.objectid = 0;
key.type = BTRFS_QGROUP_STATUS_KEY;
@@ -800,7 +802,7 @@
ret = btrfs_insert_empty_item(trans, quota_root, path, &key,
sizeof(*ptr));
if (ret)
- goto out;
+ goto out_free_path;
leaf = path->nodes[0];
ptr = btrfs_item_ptr(leaf, path->slots[0],
@@ -818,8 +820,15 @@
fs_info->quota_root = quota_root;
fs_info->pending_quota_state = 1;
spin_unlock(&fs_info->qgroup_lock);
-out:
+out_free_path:
btrfs_free_path(path);
+out_free_root:
+ if (ret) {
+ free_extent_buffer(quota_root->node);
+ free_extent_buffer(quota_root->commit_root);
+ kfree(quota_root);
+ }
+out:
return ret;
}