From 4c8a6fed53c2c10604a7c762d1bd31388709c4ac Mon Sep 17 00:00:00 2001
From: Kirill Korotaev <dev@openvz.org>
Date: Mon, 26 Feb 2007 01:48:36 +0100
Subject: fix ext3 block bitmap leakage

This patch fixes ext3 block bitmap leakage,
which leads to the following fsck messages on
_healthy_ filesystem:
Block bitmap differences:  -64159 -73707

All kernels up to 2.6.17 have this bug.

Found by
   Vasily Averin <vvs@sw.ru> and Andrey Savochkin <saw@sawoct.com>
Test case triggered the issue was created by
   Dmitry Monakhov <dmonakhov@sw.ru>

Signed-Off-By: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
---
 fs/ext3/inode.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'fs')

diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 4fafef3c511..ef05ecef0d9 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -516,6 +516,7 @@ static int ext3_alloc_branch(handle_t *handle, struct inode *inode,
 
 	branch[0].key = cpu_to_le32(parent);
 	if (parent) {
+		keys = 1;
 		for (n = 1; n < num; n++) {
 			struct buffer_head *bh;
 			/* Allocate the next block */
-- 
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