From: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Date: Wed, 9 Apr 2014 00:18:04 +0000 (+0900)
Subject: Btrfs: fix possible memory leak in btrfs_create_tree()
X-Git-Tag: v4.9.8~6070^2~92
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=59885b39303edc0b3284f324a1ca42cb6e7742d0;p=platform%2Fkernel%2Flinux-rpi3.git

Btrfs: fix possible memory leak in btrfs_create_tree()

In btrfs_create_tree(), if btrfs_insert_root() fails, we should
free root->commit_root.

Reported-by: Alex Lyakas <alex@zadarastorage.com>
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
---

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index cf8427a..d3bd34e 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1366,6 +1366,7 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
 fail:
 	if (leaf) {
 		btrfs_tree_unlock(leaf);
+		free_extent_buffer(root->commit_root);
 		free_extent_buffer(leaf);
 	}
 	kfree(root);