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Subject: [PATCH 03/12] zap_sector: fix memory leak
From:   Wu Guanghao <wuguanghao3@huawei.com>
To:     <linux-ext4@vger.kernel.org>
CC:     <liuzhiqiang26@huawei.com>, <linfeilong@huawei.com>
References: <266bc52e-e279-ce84-0e1f-1405b9bc6174@huawei.com>
Message-ID: <8ea5c607-54cc-ccaf-3e4b-ee2af0160a0b@huawei.com>
Date:   Mon, 24 May 2021 19:20:54 +0800
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In zap_sector(), need free buf before return,
otherwise it will cause memory leak.

Signed-off-by: Wu Guanghao <wuguanghao3@huawei.com>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Reviewed-by: Wu Bo <wubo40@huawei.com>
---
 misc/mke2fs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index afbcf486..94f81da9 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -586,6 +586,7 @@ static void zap_sector(ext2_filsys fs, int sect, int nsect)
 			magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 			if ((*magic == BSD_DISKMAGIC) ||
 				(*magic == BSD_MAGICDISK))
+				free(buf);
 				return;
 		}
 	}
--