From 676e4c86391936795c82ccd11ca9671ee6307936 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <error27@gmail.com>
Date: Sat, 29 May 2010 09:43:07 +0000
Subject: [PATCH] Btrfs: handle kzalloc() failure in open_ctree()
Unwind and return -ENOMEM if the allocation fails here.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
---
fs/btrfs/disk-io.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index f3b287c22caf..73895baf6e07 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1941,8 +1941,11 @@ struct btrfs_root *open_ctree(struct super_block *sb,
btrfs_level_size(tree_root,
btrfs_super_log_root_level(disk_super));
- log_tree_root = kzalloc(sizeof(struct btrfs_root),
- GFP_NOFS);
+ log_tree_root = kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
+ if (!log_tree_root) {
+ err = -ENOMEM;
+ goto fail_trans_kthread;
+ }
__setup_root(nodesize, leafsize, sectorsize, stripesize,
log_tree_root, fs_info, BTRFS_TREE_LOG_OBJECTID);
--
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