[PATCH 4.19 142/205] ext4: fix buffer leak in ext4_xattr_get_block() on error path

[Greg Kroah-Hartman]

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

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

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

commit ecaaf408478b6fb4d9986f9b6652f3824e374f4c upstream.

Fixes: dec214d00e0d ("ext4: xattr inode deduplication")
Signed-off-by: Vasily Averin <v...@virtuozzo.com>
Signed-off-by: Theodore Ts'o <ty...@mit.edu>
Cc: sta...@kernel.org # 4.13
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 fs/ext4/xattr.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -2282,8 +2282,10 @@ static struct buffer_head *ext4_xattr_ge
        if (!bh)
                return ERR_PTR(-EIO);
        error = ext4_xattr_check_block(inode, bh);
-       if (error)
+       if (error) {
+               brelse(bh);
                return ERR_PTR(error);
+       }
        return bh;
 }