linux-kernel - [PATCH 07/11] gfs2: pass correct dentry to finish_open() in __gfs2

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Date:	Mon, 16 Sep 2013 14:52:01 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	viro@...IV.linux.org.uk
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	mszeredi@...e.cz, Steven Whitehouse <swhiteho@...hat.com>,
	stable@...r.kernel.org
Subject: [PATCH 07/11] gfs2: pass correct dentry to finish_open() in __gfs2_lookup()

From: Miklos Szeredi <mszeredi@...e.cz>

AFAICS if d_splice_alias() returned non-NULL, this code would Oops
(finish_open expects an instantiated dentry).

Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
Cc: Steven Whitehouse <swhiteho@...hat.com>
Cc: stable@...r.kernel.org
---
 fs/gfs2/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 6d7f976..abe7dae 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -774,7 +774,7 @@ static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry,
 
 	d = d_splice_alias(inode, dentry);
 	if (file && S_ISREG(inode->i_mode))
-		error = finish_open(file, dentry, gfs2_open_common, opened);
+		error = finish_open(file, d ? d : dentry, gfs2_open_common, opened);
 
 	gfs2_glock_dq_uninit(&gh);
 	if (error)
-- 
1.8.1.4

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