From: Thiemo Nagel <thiemo.nagel@ph.tum.de>
Date: Sun, 5 Apr 2009 03:30:44 +0000 (-0400)
Subject: ext4: Fix off-by-one-error in ext4_valid_extent_idx()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e44543b83bf4ab84dc6bd5b88158c78b1ed1c208;p=linux-beck.git

ext4: Fix off-by-one-error in ext4_valid_extent_idx()

Signed-off-by: Thiemo Nagel <thiemo.nagel@ph.tum.de>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index ac77d8b8251d..6132353dcf62 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -342,7 +342,7 @@ static int ext4_valid_extent_idx(struct inode *inode,
 	ext4_fsblk_t block = idx_pblock(ext_idx);
 	struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
 	if (unlikely(block < le32_to_cpu(es->s_first_data_block) ||
-			(block > ext4_blocks_count(es))))
+			(block >= ext4_blocks_count(es))))
 		return 0;
 	else
 		return 1;