[PATCH 4.9 65/83] ext4: fix buffer leak in __ext4_read_dirblock() on error path

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vasily Averin <v...@virtuozzo.com>

commit de59fae0043f07de5d25e02ca360f7d57bfa5866 upstream.

Fixes: dc6982ff4db1 ("ext4: refactor code to read directory blocks ...")
Signed-off-by: Vasily Averin <v...@virtuozzo.com>
Signed-off-by: Theodore Ts'o <ty...@mit.edu>
Cc: sta...@kernel.org # 3.9
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 fs/ext4/namei.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -124,6 +124,7 @@ static struct buffer_head *__ext4_read_d
        if (!is_dx_block && type == INDEX) {
                ext4_error_inode(inode, func, line, block,
                       "directory leaf block found instead of index block");
+               brelse(bh);
                return ERR_PTR(-EFSCORRUPTED);
        }
        if (!ext4_has_metadata_csum(inode->i_sb) ||