From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andrei Vagin , Miklos Szeredi Subject: [PATCH 4.4 046/138] ovl: disallow overlayfs as upperdir Date: Thu, 18 Aug 2016 15:57:36 +0200 Message-Id: <20160818135559.830429917@linuxfoundation.org> In-Reply-To: <20160818135553.377018690@linuxfoundation.org> References: <20160818135553.377018690@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Miklos Szeredi commit 76bc8e2843b66f8205026365966b49ec6da39ae7 upstream. This does not work and does not make sense. So instead of fixing it (probably not hard) just disallow. Reported-by: Andrei Vagin Signed-off-by: Miklos Szeredi Signed-off-by: Greg Kroah-Hartman --- fs/overlayfs/super.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -376,7 +376,8 @@ static struct ovl_entry *ovl_alloc_entry static bool ovl_dentry_remote(struct dentry *dentry) { return dentry->d_flags & - (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE); + (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE | + DCACHE_OP_REAL); } static bool ovl_dentry_weird(struct dentry *dentry)