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 ac77d8b8251da9cb6ac720db55e8b7e72ec97a91..6132353dcf62a5a167d62d6d34f2343fd5a4533a 100644 (file)
--- 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;