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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Amir Goldstein <amir73il@gmail.com>,
        Miklos Szeredi <mszeredi@redhat.com>
Subject: [PATCH 4.14 80/94] ovl: fix memory leak on unlink of indexed file
Date:   Mon,  8 Oct 2018 20:32:01 +0200
Message-Id: <20181008175610.337490405@linuxfoundation.org>
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4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Amir Goldstein <amir73il@gmail.com>

commit 63e132528032ce937126aba591a7b37ec593a6bb upstream.

The memory leak was detected by kmemleak when running xfstests
overlay/051,053

Fixes: caf70cb2ba5d ("ovl: cleanup orphan index entries")
Cc: <stable@vger.kernel.org> # v4.13
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/overlayfs/util.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -438,7 +438,7 @@ static void ovl_cleanup_index(struct den
 	struct dentry *upperdentry = ovl_dentry_upper(dentry);
 	struct dentry *index = NULL;
 	struct inode *inode;
-	struct qstr name;
+	struct qstr name = { };
 	int err;
 
 	err = ovl_get_index_name(lowerdentry, &name);
@@ -477,6 +477,7 @@ static void ovl_cleanup_index(struct den
 		goto fail;
 
 out:
+	kfree(name.name);
 	dput(index);
 	return;