linux-kernel - [PATCH 3/4] f2fs: avoid memory leak in f2fs_write_root

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Date:   Thu, 16 Nov 2017 19:50:57 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     <jaegeuk@...nel.org>
CC:     <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>, <chao@...nel.org>,
        Chao Yu <yuchao0@...wei.com>
Subject: [PATCH 3/4] f2fs: avoid memory leak in f2fs_write_root_inode

Before exiting f2fs_write_root_inode, we should free in-there allocated
memory.

Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
 mkfs/f2fs_format.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
index d5f39ca3dac4..9fc0398fab65 100644
--- a/mkfs/f2fs_format.c
+++ b/mkfs/f2fs_format.c
@@ -1042,6 +1042,7 @@ static int f2fs_write_root_inode(void)
 			c.blks_per_seg, main_area_node_seg_blk_offset);
 	if (dev_write_block(raw_node, main_area_node_seg_blk_offset)) {
 		MSG(1, "\tError: While writing the raw_node to disk!!!\n");
+		free(raw_node);
 		return -1;
 	}
 
@@ -1052,9 +1053,11 @@ static int f2fs_write_root_inode(void)
 
 #ifndef WITH_ANDROID
 	if (discard_obsolete_dnode(raw_node, main_area_node_seg_blk_offset)) {
+		free(raw_node);
 		return -1;
 	}
 #endif
+	free(raw_node);
 	return 0;
 }
 
-- 
2.15.0.55.gc2ece9dc4de6