[PATCH (untested)] vfs: fix d_inode_lookup() dentry ref leak

[Miklos Szeredi]

From: Miklos Szeredi <mszeredi@xxxxxxx>

d_inode_lookup() appears to leak a dentry reference on IS_DEADDIR().

Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxx>
CC: stable@xxxxxxxxxxxxxxx
---
 fs/namei.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Index: linux-2.6/fs/namei.c
===================================================================
--- linux-2.6.orig/fs/namei.c	2012-02-03 14:14:52.000000000 +0100
+++ linux-2.6/fs/namei.c	2012-02-03 14:15:48.000000000 +0100
@@ -1095,8 +1095,10 @@ static struct dentry *d_inode_lookup(str
 	struct dentry *old;
 
 	/* Don't create child dentry for a dead directory. */
-	if (unlikely(IS_DEADDIR(inode)))
+	if (unlikely(IS_DEADDIR(inode))) {
+		dput(dentry);
 		return ERR_PTR(-ENOENT);
+	}
 
 	old = inode->i_op->lookup(inode, dentry, nd);
 	if (unlikely(old)) {
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/