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

Thiemo Nagel · tytso · commit e44543b83bf4 · 2009-04-04T23:30:44.000-04:00
Signed-off-by: Thiemo Nagel &lt;thiemo.nagel@ph.tum.de&gt;
Signed-off-by: "Theodore Ts'o" &lt;tytso@mit.edu&gt;
diff --git 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;
