From: Zhihao Cheng <chengzhihao1@huawei.com>
Date: Mon, 1 Jun 2020 09:10:37 +0000 (+0800)
Subject: ubifs: dent: Fix some potential memory leaks while iterating entries
X-Git-Tag: v4.4.242~40
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1b37f532653e9805c069e663280324921bf3a1a2;p=thirdparty%2Fkernel%2Fstable.git

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>
---

diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 595ca0debe117..09134a13a39ce 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -1125,6 +1125,7 @@ int dbg_check_dir(struct ubifs_info *c, const struct inode *dir)
 			err = PTR_ERR(dent);
 			if (err == -ENOENT)
 				break;
+			kfree(pdent);
 			return err;
 		}