From: Amir Goldstein <amir73il@gmail.com>
Date: Tue, 18 Sep 2018 13:34:31 +0000 (+0300)
Subject: ovl: fix memory leak on unlink of indexed file
X-Git-Tag: v4.14.75~16
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8d75ecc13fdc58f39451f99f62d4d6940fd5397f;p=platform%2Fkernel%2Flinux-exynos.git

ovl: fix memory leak on unlink of indexed file

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>
---

diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index f60ce2e04df0..afdc2533ce74 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -438,7 +438,7 @@ static void ovl_cleanup_index(struct dentry *dentry)
 	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 dentry *dentry)
 		goto fail;
 
 out:
+	kfree(name.name);
 	dput(index);
 	return;