From: Qu Wenruo <quwenruo@cn.fujitsu.com>
Date: Wed, 11 Feb 2015 01:57:17 +0000 (+0800)
Subject: btrfs-progs: Fix 2 extent buffer leak in btrfs-debug-tree
X-Git-Tag: upstream/4.16.1~2369
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d09504edb148336893d2a67c4cceb09b640ade14;p=platform%2Fupstream%2Fbtrfs-progs.git

btrfs-progs: Fix 2 extent buffer leak in btrfs-debug-tree

There are 2 known extent buffer leaks:
1) With -t option.
-t option will skip other tree roots, but it will read the root node
first and then skip it.
Where it forgets to free the tree block it read.

2) with -b option.
It forgets to free the tree block it read.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
---

diff --git a/btrfs-debug-tree.c b/btrfs-debug-tree.c
index ce7a792..610624e 100644
--- a/btrfs-debug-tree.c
+++ b/btrfs-debug-tree.c
@@ -221,6 +221,7 @@ int main(int ac, char **av)
 			goto close_root;
 		}
 		btrfs_print_tree(root, leaf, 0);
+		free_extent_buffer(leaf);
 		goto close_root;
 	}
 
@@ -284,8 +285,10 @@ again:
 					      0);
 			if (!extent_buffer_uptodate(buf))
 				goto next;
-			if (tree_id && found_key.objectid != tree_id)
+			if (tree_id && found_key.objectid != tree_id) {
+				free_extent_buffer(buf);
 				goto next;
+			}
 
 			switch(found_key.objectid) {
 			case BTRFS_ROOT_TREE_OBJECTID: