linux-kernel - [PATCH] fs/ntfs3: Fix some memory leaks in an error handling path of 'log

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Date:   Thu, 11 Nov 2021 08:45:44 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     almaz.alexandrovich@...agon-software.com
Cc:     ntfs3@...ts.linux.dev, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] fs/ntfs3: Fix some memory leaks in an error handling path of 'log_replay()'

All error handling paths lead to 'out' where many resources are freed.

Do it as well here instead of a direct return, otherwise 'log', 'ra' and
'log->one_page_buf' (at least) will leak.

Fixes: b46acd6a6a62 ("fs/ntfs3: Add NTFS journal")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 fs/ntfs3/fslog.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/ntfs3/fslog.c b/fs/ntfs3/fslog.c
index 06492f088d60..915f42cf07bc 100644
--- a/fs/ntfs3/fslog.c
+++ b/fs/ntfs3/fslog.c
@@ -4085,8 +4085,10 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
 		if (client == LFS_NO_CLIENT_LE) {
 			/* Insert "NTFS" client LogFile. */
 			client = ra->client_idx[0];
-			if (client == LFS_NO_CLIENT_LE)
-				return -EINVAL;
+			if (client == LFS_NO_CLIENT_LE) {
+				err = -EINVAL;
+				goto out;
+			}
 
 			t16 = le16_to_cpu(client);
 			cr = ca + t16;
-- 
2.30.2