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, Steven Whitehouse Subject: [PATCH 3.12 175/212] GFS2: Fix ref count bug relating to atomic_open Date: Mon, 2 Dec 2013 11:16:06 -0800 Message-Id: <20131202191307.752864365@linuxfoundation.org> In-Reply-To: <20131202191248.517975703@linuxfoundation.org> References: <20131202191248.517975703@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Steven Whitehouse commit ea0341e071527d5cec350917b01ab901af09d758 upstream. In the case that atomic_open calls finish_no_open() with the dentry that was supplied to gfs2_atomic_open() an extra reference count is required. This patch fixes that issue preventing a bug trap triggering at umount time. Signed-off-by: Steven Whitehouse Signed-off-by: Greg Kroah-Hartman --- fs/gfs2/inode.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -1168,8 +1168,11 @@ static int gfs2_atomic_open(struct inode if (d != NULL) dentry = d; if (dentry->d_inode) { - if (!(*opened & FILE_OPENED)) + if (!(*opened & FILE_OPENED)) { + if (d == NULL) + dget(dentry); return finish_no_open(file, dentry); + } dput(d); return 0; }