From 213c836b239658f808c63d058b442ad81a399eb3 Mon Sep 17 00:00:00 2001
From: Zhihao Cheng <chengzhihao1@huawei.com>
Date: Mon, 1 Jun 2020 17:10:37 +0800
Subject: [PATCH] ubifs: dent: Fix some potential memory leaks while iterating
 entries

commit 58f6e78a65f1fcbf732f60a7478ccc99873ff3ba upstream.

Fix some potential memory leaks in error handling branches while
iterating dent entries. For example, function dbg_check_dir()
forgets to free pdent if it exists.

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Cc: <stable@vger.kernel.org>
Fixes: 1e51764a3c2ac05a2 ("UBIFS: add new flash file system")
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ubifs/debug.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index e4b52783819d..992b74f9c941 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -1123,6 +1123,7 @@ int dbg_check_dir(struct ubifs_info *c, const struct inode *dir)
 			err = PTR_ERR(dent);
 			if (err == -ENOENT)
 				break;
+			kfree(pdent);
 			return err;
 		}