From 0463bb4e8d2f717a9bf3be6cc12c0aec51cc261d Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Wed, 1 Oct 2008 19:09:04 -0400
Subject: [PATCH] Btrfs: disk-io.c (open_ctree): Don't deref. NULL upon failed
 kzalloc

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---
 fs/btrfs/disk-io.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 5ee10d3136f5..41b7d24d07e2 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1371,7 +1371,8 @@ struct btrfs_root *open_ctree(struct super_block *sb,
 
 	struct btrfs_super_block *disk_super;
 
-	if (!extent_root || !tree_root || !fs_info) {
+	if (!extent_root || !tree_root || !fs_info ||
+	    !chunk_root || !dev_root) {
 		err = -ENOMEM;
 		goto fail;
 	}
-- 
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