linux-kernel - [PATCH 1/2] fsck.f2fs: fix memory leak caused by fsck_chk_orphan

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Date:   Mon, 10 May 2021 17:57:25 +0900
From:   Seung-Woo Kim <sw0312.kim@...sung.com>
To:     jaegeuk@...nel.org, linux-f2fs-devel@...ts.sourceforge.net
Cc:     linux-kernel@...r.kernel.org, chao@...nel.org,
        sw0312.kim@...sung.com
Subject: [PATCH 1/2] fsck.f2fs: fix memory leak caused by
 fsck_chk_orphan_node()

With invalid node info from fsck_chk_orphan_node(), orphan_blk
and new_blk are not freed. Fix memory leak in the path.

Signed-off-by: Seung-Woo Kim <sw0312.kim@...sung.com>
---
 fsck/fsck.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fsck/fsck.c b/fsck/fsck.c
index e52672032d2c..6019775dcb2d 100644
--- a/fsck/fsck.c
+++ b/fsck/fsck.c
@@ -1780,8 +1780,11 @@ int fsck_chk_orphan_node(struct f2fs_sb_info *sbi)
 			if (c.preen_mode == PREEN_MODE_1 && !c.fix_on) {
 				get_node_info(sbi, ino, &ni);
 				if (!IS_VALID_NID(sbi, ino) ||
-						!IS_VALID_BLK_ADDR(sbi, ni.blk_addr))
+				    !IS_VALID_BLK_ADDR(sbi, ni.blk_addr)) {
+					free(orphan_blk);
+					free(new_blk);
 					return -EINVAL;
+				}
 
 				continue;
 			}
-- 
2.19.2