ext4: fix buffer leak in __ext4_read_dirblock() on error path

commit de59fae0043f07de5d25e02ca360f7d57bfa5866 upstream.

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

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index cfa0dc2d97cd48a224ee041e9c87e9433108129c..4e301b0cdfb53eab14eecec148b5d74b936dc9b0 100644 (file)
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -125,6 +125,7 @@ static struct buffer_head *__ext4_read_dirblock(struct inode *inode,
        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) ||